-/* Target-dependent code for Hitachi Super-H, for GDB.
- Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
- Free Software Foundation, Inc.
+/* Target-dependent code for Renesas Super-H, for GDB.
+
+ Copyright (C) 1993-2016 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-/*
- Contributed by Steve Chamberlain
- sac@cygnus.com
- */
+/* Contributed by Steve Chamberlain
+ sac@cygnus.com. */
#include "defs.h"
#include "frame.h"
+#include "frame-base.h"
+#include "frame-unwind.h"
+#include "dwarf2-frame.h"
#include "symtab.h"
-#include "symfile.h"
#include "gdbtypes.h"
#include "gdbcmd.h"
#include "gdbcore.h"
#include "value.h"
#include "dis-asm.h"
#include "inferior.h"
-#include "gdb_string.h"
#include "arch-utils.h"
#include "floatformat.h"
#include "regcache.h"
#include "doublest.h"
#include "osabi.h"
+#include "reggroups.h"
+#include "regset.h"
+#include "objfiles.h"
#include "sh-tdep.h"
+#include "sh64-tdep.h"
#include "elf-bfd.h"
#include "solib-svr4.h"
-/* sh64 flags */
+/* sh flags */
#include "elf/sh.h"
-/* registers numbers shared with the simulator */
+#include "dwarf2.h"
+/* registers numbers shared with the simulator. */
#include "gdb/sim-sh.h"
-void (*sh_show_regs) (void);
-CORE_ADDR (*skip_prologue_hard_way) (CORE_ADDR);
-void (*do_pseudo_register) (int);
+/* List of "set sh ..." and "show sh ..." commands. */
+static struct cmd_list_element *setshcmdlist = NULL;
+static struct cmd_list_element *showshcmdlist = NULL;
+
+static const char sh_cc_gcc[] = "gcc";
+static const char sh_cc_renesas[] = "renesas";
+static const char *const sh_cc_enum[] = {
+ sh_cc_gcc,
+ sh_cc_renesas,
+ NULL
+};
-#define SH_DEFAULT_NUM_REGS 59
+static const char *sh_active_calling_convention = sh_cc_gcc;
-/* Define other aspects of the stack frame.
- we keep a copy of the worked out return pc lying around, since it
- is a useful bit of info */
-
-struct frame_extra_info
+#define SH_NUM_REGS 67
+
+struct sh_frame_cache
{
- CORE_ADDR return_pc;
- int leaf_function;
- int f_offset;
+ /* Base address. */
+ CORE_ADDR base;
+ LONGEST sp_offset;
+ CORE_ADDR pc;
+
+ /* Flag showing that a frame has been created in the prologue code. */
+ int uses_fp;
+
+ /* Saved registers. */
+ CORE_ADDR saved_regs[SH_NUM_REGS];
+ CORE_ADDR saved_sp;
};
+static int
+sh_is_renesas_calling_convention (struct type *func_type)
+{
+ int val = 0;
+
+ if (func_type)
+ {
+ func_type = check_typedef (func_type);
+
+ if (TYPE_CODE (func_type) == TYPE_CODE_PTR)
+ func_type = check_typedef (TYPE_TARGET_TYPE (func_type));
+
+ if (TYPE_CODE (func_type) == TYPE_CODE_FUNC
+ && TYPE_CALLING_CONVENTION (func_type) == DW_CC_GNU_renesas_sh)
+ val = 1;
+ }
+
+ if (sh_active_calling_convention == sh_cc_renesas)
+ val = 1;
+
+ return val;
+}
+
static const char *
-sh_generic_register_name (int reg_nr)
+sh_sh_register_name (struct gdbarch *gdbarch, int reg_nr)
{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
- "fpul", "fpscr",
- "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
- "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
- "ssr", "spc",
- "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
- "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1",
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
};
if (reg_nr < 0)
return NULL;
}
static const char *
-sh_sh_register_name (int reg_nr)
+sh_sh3_register_name (struct gdbarch *gdbarch, int reg_nr)
{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
- "", "",
- "", "", "", "", "", "", "", "",
- "", "", "", "", "", "", "", "",
- "", "",
- "", "", "", "", "", "", "", "",
- "", "", "", "", "", "", "", "",
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "ssr", "spc",
+ "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
+ "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1"
+ "", "", "", "", "", "", "", "",
};
if (reg_nr < 0)
return NULL;
}
static const char *
-sh_sh3_register_name (int reg_nr)
+sh_sh3e_register_name (struct gdbarch *gdbarch, int reg_nr)
{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
- "", "",
- "", "", "", "", "", "", "", "",
- "", "", "", "", "", "", "", "",
- "ssr", "spc",
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "fpul", "fpscr",
+ "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
+ "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
+ "ssr", "spc",
"r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
- "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1"
+ "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1",
+ "", "", "", "", "", "", "", "",
};
if (reg_nr < 0)
return NULL;
}
static const char *
-sh_sh3e_register_name (int reg_nr)
+sh_sh2e_register_name (struct gdbarch *gdbarch, int reg_nr)
{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
"fpul", "fpscr",
- "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
- "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
- "ssr", "spc",
- "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
- "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1",
+ "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
+ "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
+ "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
};
if (reg_nr < 0)
return NULL;
}
static const char *
-sh_sh2e_register_name (int reg_nr)
+sh_sh2a_register_name (struct gdbarch *gdbarch, int reg_nr)
{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ static char *register_names[] = {
+ /* general registers 0-15 */
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ /* 16 - 22 */
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ /* 23, 24 */
"fpul", "fpscr",
- "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
- "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
- "", "",
+ /* floating point registers 25 - 40 */
+ "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
+ "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
+ /* 41, 42 */
+ "", "",
+ /* 43 - 62. Banked registers. The bank number used is determined by
+ the bank register (63). */
+ "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b",
+ "r8b", "r9b", "r10b", "r11b", "r12b", "r13b", "r14b",
+ "machb", "ivnb", "prb", "gbrb", "maclb",
+ /* 63: register bank number, not a real register but used to
+ communicate the register bank currently get/set. This register
+ is hidden to the user, who manipulates it using the pseudo
+ register called "bank" (67). See below. */
+ "",
+ /* 64 - 66 */
+ "ibcr", "ibnr", "tbr",
+ /* 67: register bank number, the user visible pseudo register. */
+ "bank",
+ /* double precision (pseudo) 68 - 75 */
+ "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14",
+ };
+ if (reg_nr < 0)
+ return NULL;
+ if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
+ return NULL;
+ return register_names[reg_nr];
+}
+
+static const char *
+sh_sh2a_nofpu_register_name (struct gdbarch *gdbarch, int reg_nr)
+{
+ static char *register_names[] = {
+ /* general registers 0-15 */
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ /* 16 - 22 */
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ /* 23, 24 */
+ "", "",
+ /* floating point registers 25 - 40 */
+ "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "",
+ /* 41, 42 */
+ "", "",
+ /* 43 - 62. Banked registers. The bank number used is determined by
+ the bank register (63). */
+ "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b",
+ "r8b", "r9b", "r10b", "r11b", "r12b", "r13b", "r14b",
+ "machb", "ivnb", "prb", "gbrb", "maclb",
+ /* 63: register bank number, not a real register but used to
+ communicate the register bank currently get/set. This register
+ is hidden to the user, who manipulates it using the pseudo
+ register called "bank" (67). See below. */
+ "",
+ /* 64 - 66 */
+ "ibcr", "ibnr", "tbr",
+ /* 67: register bank number, the user visible pseudo register. */
+ "bank",
+ /* double precision (pseudo) 68 - 75 */
"", "", "", "", "", "", "", "",
};
if (reg_nr < 0)
}
static const char *
-sh_sh_dsp_register_name (int reg_nr)
-{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
- "", "dsr",
- "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1",
- "y0", "y1", "", "", "", "", "", "mod",
- "", "",
- "rs", "re", "", "", "", "", "", "",
- "", "", "", "", "", "", "", "",
+sh_sh_dsp_register_name (struct gdbarch *gdbarch, int reg_nr)
+{
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "", "dsr",
+ "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1",
+ "y0", "y1", "", "", "", "", "", "mod",
+ "", "",
+ "rs", "re", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
};
if (reg_nr < 0)
return NULL;
}
static const char *
-sh_sh3_dsp_register_name (int reg_nr)
-{
- static char *register_names[] =
- {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
- "", "dsr",
- "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1",
- "y0", "y1", "", "", "", "", "", "mod",
- "ssr", "spc",
- "rs", "re", "", "", "", "", "", "",
- "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b"
- "", "", "", "", "", "", "", "",
+sh_sh3_dsp_register_name (struct gdbarch *gdbarch, int reg_nr)
+{
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "", "dsr",
+ "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1",
+ "y0", "y1", "", "", "", "", "", "mod",
+ "ssr", "spc",
+ "rs", "re", "", "", "", "", "", "",
+ "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
};
if (reg_nr < 0)
return NULL;
}
static const char *
-sh_sh4_register_name (int reg_nr)
+sh_sh4_register_name (struct gdbarch *gdbarch, int reg_nr)
{
- static char *register_names[] =
- {
+ static char *register_names[] = {
/* general registers 0-15 */
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
/* 16 - 22 */
- "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
/* 23, 24 */
"fpul", "fpscr",
/* floating point registers 25 - 40 */
- "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
- "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
+ "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
+ "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
/* 41, 42 */
- "ssr", "spc",
+ "ssr", "spc",
/* bank 0 43 - 50 */
"r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
/* bank 1 51 - 58 */
"r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1",
- /* double precision (pseudo) 59 - 66 */
- "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14",
- /* vectors (pseudo) 67 - 70 */
- "fv0", "fv4", "fv8", "fv12",
- /* FIXME: missing XF 71 - 86 */
- /* FIXME: missing XD 87 - 94 */
+ /* 59 - 66 */
+ "", "", "", "", "", "", "", "",
+ /* pseudo bank register. */
+ "",
+ /* double precision (pseudo) 68 - 75 */
+ "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14",
+ /* vectors (pseudo) 76 - 79 */
+ "fv0", "fv4", "fv8", "fv12",
+ /* FIXME: missing XF */
+ /* FIXME: missing XD */
};
if (reg_nr < 0)
return NULL;
}
static const char *
-sh_sh64_register_name (int reg_nr)
+sh_sh4_nofpu_register_name (struct gdbarch *gdbarch, int reg_nr)
{
- static char *register_names[] =
- {
- /* SH MEDIA MODE (ISA 32) */
- /* general registers (64-bit) 0-63 */
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
- "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
- "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",
- "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",
- "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55",
- "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63",
-
- /* pc (64-bit) 64 */
- "pc",
-
- /* status reg., saved status reg., saved pc reg. (64-bit) 65-67 */
- "sr", "ssr", "spc",
-
- /* target registers (64-bit) 68-75*/
- "tr0", "tr1", "tr2", "tr3", "tr4", "tr5", "tr6", "tr7",
-
- /* floating point state control register (32-bit) 76 */
- "fpscr",
-
- /* single precision floating point registers (32-bit) 77-140*/
- "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
- "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
- "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23",
- "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31",
- "fr32", "fr33", "fr34", "fr35", "fr36", "fr37", "fr38", "fr39",
- "fr40", "fr41", "fr42", "fr43", "fr44", "fr45", "fr46", "fr47",
- "fr48", "fr49", "fr50", "fr51", "fr52", "fr53", "fr54", "fr55",
- "fr56", "fr57", "fr58", "fr59", "fr60", "fr61", "fr62", "fr63",
-
- /* double precision registers (pseudo) 141-172 */
- "dr0", "dr2", "dr4", "dr6", "dr8", "dr10", "dr12", "dr14",
- "dr16", "dr18", "dr20", "dr22", "dr24", "dr26", "dr28", "dr30",
- "dr32", "dr34", "dr36", "dr38", "dr40", "dr42", "dr44", "dr46",
- "dr48", "dr50", "dr52", "dr54", "dr56", "dr58", "dr60", "dr62",
-
- /* floating point pairs (pseudo) 173-204*/
- "fp0", "fp2", "fp4", "fp6", "fp8", "fp10", "fp12", "fp14",
- "fp16", "fp18", "fp20", "fp22", "fp24", "fp26", "fp28", "fp30",
- "fp32", "fp34", "fp36", "fp38", "fp40", "fp42", "fp44", "fp46",
- "fp48", "fp50", "fp52", "fp54", "fp56", "fp58", "fp60", "fp62",
-
- /* floating point vectors (4 floating point regs) (pseudo) 205-220*/
- "fv0", "fv4", "fv8", "fv12", "fv16", "fv20", "fv24", "fv28",
- "fv32", "fv36", "fv40", "fv44", "fv48", "fv52", "fv56", "fv60",
-
- /* SH COMPACT MODE (ISA 16) (all pseudo) 221-272*/
- "r0_c", "r1_c", "r2_c", "r3_c", "r4_c", "r5_c", "r6_c", "r7_c",
- "r8_c", "r9_c", "r10_c", "r11_c", "r12_c", "r13_c", "r14_c", "r15_c",
- "pc_c",
- "gbr_c", "mach_c", "macl_c", "pr_c", "t_c",
- "fpscr_c", "fpul_c",
- "fr0_c", "fr1_c", "fr2_c", "fr3_c", "fr4_c", "fr5_c", "fr6_c", "fr7_c",
- "fr8_c", "fr9_c", "fr10_c", "fr11_c", "fr12_c", "fr13_c", "fr14_c", "fr15_c",
- "dr0_c", "dr2_c", "dr4_c", "dr6_c", "dr8_c", "dr10_c", "dr12_c", "dr14_c",
- "fv0_c", "fv4_c", "fv8_c", "fv12_c",
- /* FIXME!!!! XF0 XF15, XD0 XD14 ?????*/
+ static char *register_names[] = {
+ /* general registers 0-15 */
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ /* 16 - 22 */
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ /* 23, 24 */
+ "", "",
+ /* floating point registers 25 - 40 -- not for nofpu target */
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ /* 41, 42 */
+ "ssr", "spc",
+ /* bank 0 43 - 50 */
+ "r0b0", "r1b0", "r2b0", "r3b0", "r4b0", "r5b0", "r6b0", "r7b0",
+ /* bank 1 51 - 58 */
+ "r0b1", "r1b1", "r2b1", "r3b1", "r4b1", "r5b1", "r6b1", "r7b1",
+ /* 59 - 66 */
+ "", "", "", "", "", "", "", "",
+ /* pseudo bank register. */
+ "",
+ /* double precision (pseudo) 68 - 75 -- not for nofpu target */
+ "", "", "", "", "", "", "", "",
+ /* vectors (pseudo) 76 - 79 -- not for nofpu target */
+ "", "", "", "",
};
-
if (reg_nr < 0)
return NULL;
if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
return register_names[reg_nr];
}
-#define NUM_PSEUDO_REGS_SH_MEDIA 80
-#define NUM_PSEUDO_REGS_SH_COMPACT 51
-
-static const unsigned char *
-sh_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
-{
- /* 0xc3c3 is trapa #c3, and it works in big and little endian modes */
- static unsigned char breakpoint[] = {0xc3, 0xc3};
-
- *lenptr = sizeof (breakpoint);
- return breakpoint;
-}
-
-/* Macros and functions for setting and testing a bit in a minimal
- symbol that marks it as 32-bit function. The MSB of the minimal
- symbol's "info" field is used for this purpose. This field is
- already being used to store the symbol size, so the assumption is
- that the symbol size cannot exceed 2^31.
-
- ELF_MAKE_MSYMBOL_SPECIAL
- tests whether an ELF symbol is "special", i.e. refers
- to a 32-bit function, and sets a "special" bit in a
- minimal symbol to mark it as a 32-bit function
- MSYMBOL_IS_SPECIAL tests the "special" bit in a minimal symbol
- MSYMBOL_SIZE returns the size of the minimal symbol, i.e.
- the "info" field with the "special" bit masked out */
-
-#define MSYMBOL_IS_SPECIAL(msym) \
- (((long) MSYMBOL_INFO (msym) & 0x80000000) != 0)
-
-static void
-sh64_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym)
-{
- if (msym == NULL)
- return;
-
- if (((elf_symbol_type *)(sym))->internal_elf_sym.st_other == STO_SH5_ISA32)
- {
- MSYMBOL_INFO (msym) = (char *) (((long) MSYMBOL_INFO (msym)) | 0x80000000);
- SYMBOL_VALUE_ADDRESS (msym) |= 1;
- }
-}
-
-/* ISA32 (shmedia) function addresses are odd (bit 0 is set). Here
- are some macros to test, set, or clear bit 0 of addresses. */
-#define IS_ISA32_ADDR(addr) ((addr) & 1)
-#define MAKE_ISA32_ADDR(addr) ((addr) | 1)
-#define UNMAKE_ISA32_ADDR(addr) ((addr) & ~1)
-
-static int
-pc_is_isa32 (bfd_vma memaddr)
-{
- struct minimal_symbol *sym;
-
- /* If bit 0 of the address is set, assume this is a
- ISA32 (shmedia) address. */
- if (IS_ISA32_ADDR (memaddr))
- return 1;
-
- /* A flag indicating that this is a ISA32 function is stored by elfread.c in
- the high bit of the info field. Use this to decide if the function is
- ISA16 or ISA32. */
- sym = lookup_minimal_symbol_by_pc (memaddr);
- if (sym)
- return MSYMBOL_IS_SPECIAL (sym);
- else
- return 0;
+static const char *
+sh_sh4al_dsp_register_name (struct gdbarch *gdbarch, int reg_nr)
+{
+ static char *register_names[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "pc", "pr", "gbr", "vbr", "mach", "macl", "sr",
+ "", "dsr",
+ "a0g", "a0", "a1g", "a1", "m0", "m1", "x0", "x1",
+ "y0", "y1", "", "", "", "", "", "mod",
+ "ssr", "spc",
+ "rs", "re", "", "", "", "", "", "",
+ "r0b", "r1b", "r2b", "r3b", "r4b", "r5b", "r6b", "r7b",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ };
+ if (reg_nr < 0)
+ return NULL;
+ if (reg_nr >= (sizeof (register_names) / sizeof (*register_names)))
+ return NULL;
+ return register_names[reg_nr];
}
static const unsigned char *
-sh_sh64_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
+sh_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr)
{
- /* The BRK instruction for shmedia is
- 01101111 11110101 11111111 11110000
- which translates in big endian mode to 0x6f, 0xf5, 0xff, 0xf0
- and in little endian mode to 0xf0, 0xff, 0xf5, 0x6f */
-
- /* The BRK instruction for shcompact is
- 00000000 00111011
- which translates in big endian mode to 0x0, 0x3b
- and in little endian mode to 0x3b, 0x0*/
+ /* 0xc3c3 is trapa #c3, and it works in big and little endian modes. */
+ static unsigned char breakpoint[] = { 0xc3, 0xc3 };
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- {
- if (pc_is_isa32 (*pcptr))
- {
- static unsigned char big_breakpoint_media[] = {0x6f, 0xf5, 0xff, 0xf0};
- *pcptr = UNMAKE_ISA32_ADDR (*pcptr);
- *lenptr = sizeof (big_breakpoint_media);
- return big_breakpoint_media;
- }
- else
- {
- static unsigned char big_breakpoint_compact[] = {0x0, 0x3b};
- *lenptr = sizeof (big_breakpoint_compact);
- return big_breakpoint_compact;
- }
- }
- else
+ /* For remote stub targets, trapa #20 is used. */
+ if (strcmp (target_shortname, "remote") == 0)
{
- if (pc_is_isa32 (*pcptr))
+ static unsigned char big_remote_breakpoint[] = { 0xc3, 0x20 };
+ static unsigned char little_remote_breakpoint[] = { 0x20, 0xc3 };
+
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
{
- static unsigned char little_breakpoint_media[] = {0xf0, 0xff, 0xf5, 0x6f};
- *pcptr = UNMAKE_ISA32_ADDR (*pcptr);
- *lenptr = sizeof (little_breakpoint_media);
- return little_breakpoint_media;
+ *lenptr = sizeof (big_remote_breakpoint);
+ return big_remote_breakpoint;
}
else
{
- static unsigned char little_breakpoint_compact[] = {0x3b, 0x0};
- *lenptr = sizeof (little_breakpoint_compact);
- return little_breakpoint_compact;
+ *lenptr = sizeof (little_remote_breakpoint);
+ return little_remote_breakpoint;
}
}
+
+ *lenptr = sizeof (breakpoint);
+ return breakpoint;
}
/* Prologue looks like
- [mov.l <regs>,@-r15]...
- [sts.l pr,@-r15]
- [mov.l r14,@-r15]
- [mov r15,r14]
-
- Actually it can be more complicated than this. For instance, with
- newer gcc's:
-
- mov.l r14,@-r15
- add #-12,r15
- mov r15,r14
- mov r4,r1
- mov r5,r2
- mov.l r6,@(4,r14)
- mov.l r7,@(8,r14)
- mov.b r1,@r14
- mov r14,r1
- mov r14,r1
- add #2,r1
- mov.w r2,@r1
-
- */
-
-/* PTABS/L Rn, TRa 0110101111110001nnnnnnl00aaa0000
- with l=1 and n = 18 0110101111110001010010100aaa0000 */
-#define IS_PTABSL_R18(x) (((x) & 0xffffff8f) == 0x6bf14a00)
-
-/* STS.L PR,@-r0 0100000000100010
- r0-4-->r0, PR-->(r0) */
-#define IS_STS_R0(x) ((x) == 0x4022)
-
-/* STS PR, Rm 0000mmmm00101010
- PR-->Rm */
-#define IS_STS_PR(x) (((x) & 0xf0ff) == 0x2a)
-
-/* MOV.L Rm,@(disp,r15) 00011111mmmmdddd
- Rm-->(dispx4+r15) */
-#define IS_MOV_TO_R15(x) (((x) & 0xff00) == 0x1f00)
-
-/* MOV.L R14,@(disp,r15) 000111111110dddd
- R14-->(dispx4+r15) */
-#define IS_MOV_R14(x) (((x) & 0xfff0) == 0x1fe0)
-
-/* ST.Q R14, disp, R18 101011001110dddddddddd0100100000
- R18-->(dispx8+R14) */
-#define IS_STQ_R18_R14(x) (((x) & 0xfff003ff) == 0xace00120)
-
-/* ST.Q R15, disp, R18 101011001111dddddddddd0100100000
- R18-->(dispx8+R15) */
-#define IS_STQ_R18_R15(x) (((x) & 0xfff003ff) == 0xacf00120)
-
-/* ST.L R15, disp, R18 101010001111dddddddddd0100100000
- R18-->(dispx4+R15) */
-#define IS_STL_R18_R15(x) (((x) & 0xfff003ff) == 0xa8f00120)
-
-/* ST.Q R15, disp, R14 1010 1100 1111 dddd dddd dd00 1110 0000
- R14-->(dispx8+R15) */
-#define IS_STQ_R14_R15(x) (((x) & 0xfff003ff) == 0xacf000e0)
-
-/* ST.L R15, disp, R14 1010 1000 1111 dddd dddd dd00 1110 0000
- R14-->(dispx4+R15) */
-#define IS_STL_R14_R15(x) (((x) & 0xfff003ff) == 0xa8f000e0)
-
-/* ADDI.L R15,imm,R15 1101 0100 1111 ssss ssss ss00 1111 0000
- R15 + imm --> R15 */
-#define IS_ADDIL_SP_MEDIA(x) (((x) & 0xfff003ff) == 0xd4f000f0)
-
-/* ADDI R15,imm,R15 1101 0000 1111 ssss ssss ss00 1111 0000
- R15 + imm --> R15 */
-#define IS_ADDI_SP_MEDIA(x) (((x) & 0xfff003ff) == 0xd0f000f0)
-
-/* ADD.L R15,R63,R14 0000 0000 1111 1000 1111 1100 1110 0000
- R15 + R63 --> R14 */
-#define IS_ADDL_SP_FP_MEDIA(x) ((x) == 0x00f8fce0)
-
-/* ADD R15,R63,R14 0000 0000 1111 1001 1111 1100 1110 0000
- R15 + R63 --> R14 */
-#define IS_ADD_SP_FP_MEDIA(x) ((x) == 0x00f9fce0)
-
-#define IS_MOV_SP_FP_MEDIA(x) (IS_ADDL_SP_FP_MEDIA(x) || IS_ADD_SP_FP_MEDIA(x))
-
-/* MOV #imm, R0 1110 0000 ssss ssss
- #imm-->R0 */
-#define IS_MOV_R0(x) (((x) & 0xff00) == 0xe000)
-
-/* MOV.L @(disp,PC), R0 1101 0000 iiii iiii */
-#define IS_MOVL_R0(x) (((x) & 0xff00) == 0xd000)
-
-/* ADD r15,r0 0011 0000 1111 1100
- r15+r0-->r0 */
-#define IS_ADD_SP_R0(x) ((x) == 0x30fc)
-
-/* MOV.L R14 @-R0 0010 0000 1110 0110
- R14-->(R0-4), R0-4-->R0 */
-#define IS_MOV_R14_R0(x) ((x) == 0x20e6)
-
-/* ADD Rm,R63,Rn Rm+R63-->Rn 0000 00mm mmmm 1001 1111 11nn nnnn 0000
- where Rm is one of r2-r9 which are the argument registers. */
-/* FIXME: Recognize the float and double register moves too! */
-#define IS_MEDIA_IND_ARG_MOV(x) \
-((((x) & 0xfc0ffc0f) == 0x0009fc00) && (((x) & 0x03f00000) >= 0x00200000 && ((x) & 0x03f00000) <= 0x00900000))
-
-/* ST.Q Rn,0,Rm Rm-->Rn+0 1010 11nn nnnn 0000 0000 00mm mmmm 0000
- or ST.L Rn,0,Rm Rm-->Rn+0 1010 10nn nnnn 0000 0000 00mm mmmm 0000
- where Rm is one of r2-r9 which are the argument registers. */
-#define IS_MEDIA_ARG_MOV(x) \
-(((((x) & 0xfc0ffc0f) == 0xac000000) || (((x) & 0xfc0ffc0f) == 0xa8000000)) \
- && (((x) & 0x000003f0) >= 0x00000020 && ((x) & 0x000003f0) <= 0x00000090))
-
-/* ST.B R14,0,Rn Rn-->(R14+0) 1010 0000 1110 0000 0000 00nn nnnn 0000*/
-/* ST.W R14,0,Rn Rn-->(R14+0) 1010 0100 1110 0000 0000 00nn nnnn 0000*/
-/* ST.L R14,0,Rn Rn-->(R14+0) 1010 1000 1110 0000 0000 00nn nnnn 0000*/
-/* FST.S R14,0,FRn Rn-->(R14+0) 1011 0100 1110 0000 0000 00nn nnnn 0000*/
-/* FST.D R14,0,DRn Rn-->(R14+0) 1011 1100 1110 0000 0000 00nn nnnn 0000*/
-#define IS_MEDIA_MOV_TO_R14(x) \
-((((x) & 0xfffffc0f) == 0xa0e00000) \
-|| (((x) & 0xfffffc0f) == 0xa4e00000) \
-|| (((x) & 0xfffffc0f) == 0xa8e00000) \
-|| (((x) & 0xfffffc0f) == 0xb4e00000) \
-|| (((x) & 0xfffffc0f) == 0xbce00000))
-
-/* MOV Rm, Rn Rm-->Rn 0110 nnnn mmmm 0011
- where Rm is r2-r9 */
-#define IS_COMPACT_IND_ARG_MOV(x) \
-((((x) & 0xf00f) == 0x6003) && (((x) & 0x00f0) >= 0x0020) && (((x) & 0x00f0) <= 0x0090))
-
-/* compact direct arg move!
- MOV.L Rn, @r14 0010 1110 mmmm 0010 */
-#define IS_COMPACT_ARG_MOV(x) \
-(((((x) & 0xff0f) == 0x2e02) && (((x) & 0x00f0) >= 0x0020) && ((x) & 0x00f0) <= 0x0090))
-
-/* MOV.B Rm, @R14 0010 1110 mmmm 0000
- MOV.W Rm, @R14 0010 1110 mmmm 0001 */
-#define IS_COMPACT_MOV_TO_R14(x) \
-((((x) & 0xff0f) == 0x2e00) || (((x) & 0xff0f) == 0x2e01))
-
-#define IS_JSR_R0(x) ((x) == 0x400b)
-#define IS_NOP(x) ((x) == 0x0009)
+ mov.l r14,@-r15
+ sts.l pr,@-r15
+ mov.l <regs>,@-r15
+ sub <room_for_loca_vars>,r15
+ mov r15,r14
+
+ Actually it can be more complicated than this but that's it, basically. */
+
+#define GET_SOURCE_REG(x) (((x) >> 4) & 0xf)
+#define GET_TARGET_REG(x) (((x) >> 8) & 0xf)
+/* JSR @Rm 0100mmmm00001011 */
+#define IS_JSR(x) (((x) & 0xf0ff) == 0x400b)
/* STS.L PR,@-r15 0100111100100010
r15-4-->r15, PR-->(r15) */
#define IS_STS(x) ((x) == 0x4f22)
+/* STS.L MACL,@-r15 0100111100010010
+ r15-4-->r15, MACL-->(r15) */
+#define IS_MACL_STS(x) ((x) == 0x4f12)
+
/* MOV.L Rm,@-r15 00101111mmmm0110
r15-4-->r15, Rm-->(R15) */
#define IS_PUSH(x) (((x) & 0xff0f) == 0x2f06)
-#define GET_PUSHED_REG(x) (((x) >> 4) & 0xf)
-
/* MOV r15,r14 0110111011110011
r15-->r14 */
#define IS_MOV_SP_FP(x) ((x) == 0x6ef3)
/* ADD #imm,r15 01111111iiiiiiii
r15+imm-->r15 */
-#define IS_ADD_SP(x) (((x) & 0xff00) == 0x7f00)
+#define IS_ADD_IMM_SP(x) (((x) & 0xff00) == 0x7f00)
#define IS_MOV_R3(x) (((x) & 0xff00) == 0x1a00)
#define IS_SHLL_R3(x) ((x) == 0x4300)
/* FMOV.S FRm,@-Rn Rn-4-->Rn, FRm-->(Rn) 1111nnnnmmmm1011
FMOV DRm,@-Rn Rn-8-->Rn, DRm-->(Rn) 1111nnnnmmm01011
FMOV XDm,@-Rn Rn-8-->Rn, XDm-->(Rn) 1111nnnnmmm11011 */
-#define IS_FMOV(x) (((x) & 0xf00f) == 0xf00b)
-
-/* MOV Rm,Rn Rm-->Rn 0110nnnnmmmm0011
- MOV.L Rm,@(disp,Rn) Rm-->(dispx4+Rn) 0001nnnnmmmmdddd
- MOV.L Rm,@Rn Rm-->(Rn) 0010nnnnmmmm0010
- where Rm is one of r4,r5,r6,r7 which are the argument registers. */
-#define IS_ARG_MOV(x) \
-(((((x) & 0xf00f) == 0x6003) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \
- || ((((x) & 0xf000) == 0x1000) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)) \
- || ((((x) & 0xf00f) == 0x2002) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070)))
-
-/* MOV.L Rm,@(disp,r14) 00011110mmmmdddd
- Rm-->(dispx4+r14) where Rm is one of r4,r5,r6,r7 */
-#define IS_MOV_TO_R14(x) \
- ((((x) & 0xff00) == 0x1e) && (((x) & 0x00f0) >= 0x0040 && ((x) & 0x00f0) <= 0x0070))
-
-#define FPSCR_SZ (1 << 20)
-
-/* Skip any prologue before the guts of a function */
+/* CV, 2003-08-28: Only suitable with Rn == SP, therefore name changed to
+ make this entirely clear. */
+/* #define IS_FMOV(x) (((x) & 0xf00f) == 0xf00b) */
+#define IS_FPUSH(x) (((x) & 0xff0f) == 0xff0b)
+
+/* MOV Rm,Rn Rm-->Rn 0110nnnnmmmm0011 4 <= m <= 7 */
+#define IS_MOV_ARG_TO_REG(x) \
+ (((x) & 0xf00f) == 0x6003 && \
+ ((x) & 0x00f0) >= 0x0040 && \
+ ((x) & 0x00f0) <= 0x0070)
+/* MOV.L Rm,@Rn 0010nnnnmmmm0010 n = 14, 4 <= m <= 7 */
+#define IS_MOV_ARG_TO_IND_R14(x) \
+ (((x) & 0xff0f) == 0x2e02 && \
+ ((x) & 0x00f0) >= 0x0040 && \
+ ((x) & 0x00f0) <= 0x0070)
+/* MOV.L Rm,@(disp*4,Rn) 00011110mmmmdddd n = 14, 4 <= m <= 7 */
+#define IS_MOV_ARG_TO_IND_R14_WITH_DISP(x) \
+ (((x) & 0xff00) == 0x1e00 && \
+ ((x) & 0x00f0) >= 0x0040 && \
+ ((x) & 0x00f0) <= 0x0070)
+
+/* MOV.W @(disp*2,PC),Rn 1001nnnndddddddd */
+#define IS_MOVW_PCREL_TO_REG(x) (((x) & 0xf000) == 0x9000)
+/* MOV.L @(disp*4,PC),Rn 1101nnnndddddddd */
+#define IS_MOVL_PCREL_TO_REG(x) (((x) & 0xf000) == 0xd000)
+/* MOVI20 #imm20,Rn 0000nnnniiii0000 */
+#define IS_MOVI20(x) (((x) & 0xf00f) == 0x0000)
+/* SUB Rn,R15 00111111nnnn1000 */
+#define IS_SUB_REG_FROM_SP(x) (((x) & 0xff0f) == 0x3f08)
-/* Skip the prologue using the debug information. If this fails we'll
- fall back on the 'guess' method below. */
-static CORE_ADDR
-after_prologue (CORE_ADDR pc)
-{
- struct symtab_and_line sal;
- CORE_ADDR func_addr, func_end;
-
- /* If we can not find the symbol in the partial symbol table, then
- there is no hope we can determine the function's start address
- with this code. */
- if (!find_pc_partial_function (pc, NULL, &func_addr, &func_end))
- return 0;
-
- /* Get the line associated with FUNC_ADDR. */
- sal = find_pc_line (func_addr, 0);
+#define FPSCR_SZ (1 << 20)
- /* There are only two cases to consider. First, the end of the source line
- is within the function bounds. In that case we return the end of the
- source line. Second is the end of the source line extends beyond the
- bounds of the current function. We need to use the slow code to
- examine instructions in that case. */
- if (sal.end < func_end)
- return sal.end;
- else
- return 0;
-}
+/* The following instructions are used for epilogue testing. */
+#define IS_RESTORE_FP(x) ((x) == 0x6ef6)
+#define IS_RTS(x) ((x) == 0x000b)
+#define IS_LDS(x) ((x) == 0x4f26)
+#define IS_MACL_LDS(x) ((x) == 0x4f16)
+#define IS_MOV_FP_SP(x) ((x) == 0x6fe3)
+#define IS_ADD_REG_TO_FP(x) (((x) & 0xff0f) == 0x3e0c)
+#define IS_ADD_IMM_FP(x) (((x) & 0xff00) == 0x7e00)
-/* Here we look at each instruction in the function, and try to guess
- where the prologue ends. Unfortunately this is not always
- accurate. */
static CORE_ADDR
-sh_skip_prologue_hard_way (CORE_ADDR start_pc)
+sh_analyze_prologue (struct gdbarch *gdbarch,
+ CORE_ADDR pc, CORE_ADDR limit_pc,
+ struct sh_frame_cache *cache, ULONGEST fpscr)
{
- CORE_ADDR here, end;
- int updated_fp = 0;
-
- if (!start_pc)
- return 0;
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ ULONGEST inst;
+ int offset;
+ int sav_offset = 0;
+ int r3_val = 0;
+ int reg, sav_reg = -1;
- for (here = start_pc, end = start_pc + (2 * 28); here < end;)
+ cache->uses_fp = 0;
+ for (; pc < limit_pc; pc += 2)
{
- int w = read_memory_integer (here, 2);
- here += 2;
- if (IS_FMOV (w) || IS_PUSH (w) || IS_STS (w) || IS_MOV_R3 (w)
- || IS_ADD_R3SP (w) || IS_ADD_SP (w) || IS_SHLL_R3 (w)
- || IS_ARG_MOV (w) || IS_MOV_TO_R14 (w))
+ inst = read_memory_unsigned_integer (pc, 2, byte_order);
+ /* See where the registers will be saved to. */
+ if (IS_PUSH (inst))
{
- start_pc = here;
+ cache->saved_regs[GET_SOURCE_REG (inst)] = cache->sp_offset;
+ cache->sp_offset += 4;
}
- else if (IS_MOV_SP_FP (w))
+ else if (IS_STS (inst))
{
- start_pc = here;
- updated_fp = 1;
+ cache->saved_regs[PR_REGNUM] = cache->sp_offset;
+ cache->sp_offset += 4;
}
- else
- /* Don't bail out yet, if we are before the copy of sp. */
- if (updated_fp)
- break;
- }
-
- return start_pc;
-}
-
-static CORE_ADDR
-look_for_args_moves (CORE_ADDR start_pc, int media_mode)
-{
- CORE_ADDR here, end;
- int w;
- int insn_size = (media_mode ? 4 : 2);
-
- for (here = start_pc, end = start_pc + (insn_size * 28); here < end;)
- {
- if (media_mode)
+ else if (IS_MACL_STS (inst))
{
- w = read_memory_integer (UNMAKE_ISA32_ADDR (here), insn_size);
- here += insn_size;
- if (IS_MEDIA_IND_ARG_MOV (w))
- {
- /* This must be followed by a store to r14, so the argument
- is where the debug info says it is. This can happen after
- the SP has been saved, unfortunately. */
-
- int next_insn = read_memory_integer (UNMAKE_ISA32_ADDR (here),
- insn_size);
- here += insn_size;
- if (IS_MEDIA_MOV_TO_R14 (next_insn))
- start_pc = here;
- }
- else if (IS_MEDIA_ARG_MOV (w))
- {
- /* These instructions store directly the argument in r14. */
- start_pc = here;
- }
- else
- break;
+ cache->saved_regs[MACL_REGNUM] = cache->sp_offset;
+ cache->sp_offset += 4;
}
- else
+ else if (IS_MOV_R3 (inst))
+ {
+ r3_val = ((inst & 0xff) ^ 0x80) - 0x80;
+ }
+ else if (IS_SHLL_R3 (inst))
+ {
+ r3_val <<= 1;
+ }
+ else if (IS_ADD_R3SP (inst))
+ {
+ cache->sp_offset += -r3_val;
+ }
+ else if (IS_ADD_IMM_SP (inst))
+ {
+ offset = ((inst & 0xff) ^ 0x80) - 0x80;
+ cache->sp_offset -= offset;
+ }
+ else if (IS_MOVW_PCREL_TO_REG (inst))
{
- w = read_memory_integer (here, insn_size);
- w = w & 0xffff;
- here += insn_size;
- if (IS_COMPACT_IND_ARG_MOV (w))
+ if (sav_reg < 0)
{
- /* This must be followed by a store to r14, so the argument
- is where the debug info says it is. This can happen after
- the SP has been saved, unfortunately. */
-
- int next_insn = 0xffff & read_memory_integer (here, insn_size);
- here += insn_size;
- if (IS_COMPACT_MOV_TO_R14 (next_insn))
- start_pc = here;
+ reg = GET_TARGET_REG (inst);
+ if (reg < 14)
+ {
+ sav_reg = reg;
+ offset = (inst & 0xff) << 1;
+ sav_offset =
+ read_memory_integer ((pc + 4) + offset, 2, byte_order);
+ }
}
- else if (IS_COMPACT_ARG_MOV (w))
+ }
+ else if (IS_MOVL_PCREL_TO_REG (inst))
+ {
+ if (sav_reg < 0)
{
- /* These instructions store directly the argument in r14. */
- start_pc = here;
+ reg = GET_TARGET_REG (inst);
+ if (reg < 14)
+ {
+ sav_reg = reg;
+ offset = (inst & 0xff) << 2;
+ sav_offset =
+ read_memory_integer (((pc & 0xfffffffc) + 4) + offset,
+ 4, byte_order);
+ }
}
- else if (IS_MOVL_R0 (w))
+ }
+ else if (IS_MOVI20 (inst)
+ && (pc + 2 < limit_pc))
+ {
+ if (sav_reg < 0)
{
- /* There is a function that gcc calls to get the arguments
- passed correctly to the function. Only after this
- function call the arguments will be found at the place
- where they are supposed to be. This happens in case the
- argument has to be stored into a 64-bit register (for
- instance doubles, long longs). SHcompact doesn't have
- access to the full 64-bits, so we store the register in
- stack slot and store the address of the stack slot in
- the register, then do a call through a wrapper that
- loads the memory value into the register. A SHcompact
- callee calls an argument decoder
- (GCC_shcompact_incoming_args) that stores the 64-bit
- value in a stack slot and stores the address of the
- stack slot in the register. GCC thinks the argument is
- just passed by transparent reference, but this is only
- true after the argument decoder is called. Such a call
- needs to be considered part of the prologue. */
-
- /* This must be followed by a JSR @r0 instruction and by
- a NOP instruction. After these, the prologue is over! */
-
- int next_insn = 0xffff & read_memory_integer (here, insn_size);
- here += insn_size;
- if (IS_JSR_R0 (next_insn))
- {
- next_insn = 0xffff & read_memory_integer (here, insn_size);
- here += insn_size;
-
- if (IS_NOP (next_insn))
- start_pc = here;
+ reg = GET_TARGET_REG (inst);
+ if (reg < 14)
+ {
+ sav_reg = reg;
+ sav_offset = GET_SOURCE_REG (inst) << 16;
+ /* MOVI20 is a 32 bit instruction! */
+ pc += 2;
+ sav_offset
+ |= read_memory_unsigned_integer (pc, 2, byte_order);
+ /* Now sav_offset contains an unsigned 20 bit value.
+ It must still get sign extended. */
+ if (sav_offset & 0x00080000)
+ sav_offset |= 0xfff00000;
}
}
- else
- break;
}
- }
-
- return start_pc;
-}
-
-static CORE_ADDR
-sh64_skip_prologue_hard_way (CORE_ADDR start_pc)
-{
- CORE_ADDR here, end;
- int updated_fp = 0;
- int insn_size = 4;
- int media_mode = 1;
-
- if (!start_pc)
- return 0;
-
- if (pc_is_isa32 (start_pc) == 0)
- {
- insn_size = 2;
- media_mode = 0;
- }
-
- for (here = start_pc, end = start_pc + (insn_size * 28); here < end;)
- {
-
- if (media_mode)
+ else if (IS_SUB_REG_FROM_SP (inst))
{
- int w = read_memory_integer (UNMAKE_ISA32_ADDR (here), insn_size);
- here += insn_size;
- if (IS_STQ_R18_R14 (w) || IS_STQ_R18_R15 (w) || IS_STQ_R14_R15 (w)
- || IS_STL_R14_R15 (w) || IS_STL_R18_R15 (w)
- || IS_ADDIL_SP_MEDIA (w) || IS_ADDI_SP_MEDIA (w) || IS_PTABSL_R18 (w))
+ reg = GET_SOURCE_REG (inst);
+ if (sav_reg > 0 && reg == sav_reg)
{
- start_pc = here;
+ sav_reg = -1;
}
- else if (IS_MOV_SP_FP (w) || IS_MOV_SP_FP_MEDIA(w))
+ cache->sp_offset += sav_offset;
+ }
+ else if (IS_FPUSH (inst))
+ {
+ if (fpscr & FPSCR_SZ)
{
- start_pc = here;
- updated_fp = 1;
+ cache->sp_offset += 8;
}
else
- if (updated_fp)
- {
- /* Don't bail out yet, we may have arguments stored in
- registers here, according to the debug info, so that
- gdb can print the frames correctly. */
- start_pc = look_for_args_moves (here - insn_size, media_mode);
- break;
- }
+ {
+ cache->sp_offset += 4;
+ }
}
- else
+ else if (IS_MOV_SP_FP (inst))
{
- int w = 0xffff & read_memory_integer (here, insn_size);
- here += insn_size;
-
- if (IS_STS_R0 (w) || IS_STS_PR (w)
- || IS_MOV_TO_R15 (w) || IS_MOV_R14 (w)
- || IS_MOV_R0 (w) || IS_ADD_SP_R0 (w) || IS_MOV_R14_R0 (w))
+ pc += 2;
+ /* Don't go any further than six more instructions. */
+ limit_pc = min (limit_pc, pc + (2 * 6));
+
+ cache->uses_fp = 1;
+ /* At this point, only allow argument register moves to other
+ registers or argument register moves to @(X,fp) which are
+ moving the register arguments onto the stack area allocated
+ by a former add somenumber to SP call. Don't allow moving
+ to an fp indirect address above fp + cache->sp_offset. */
+ for (; pc < limit_pc; pc += 2)
{
- start_pc = here;
+ inst = read_memory_integer (pc, 2, byte_order);
+ if (IS_MOV_ARG_TO_IND_R14 (inst))
+ {
+ reg = GET_SOURCE_REG (inst);
+ if (cache->sp_offset > 0)
+ cache->saved_regs[reg] = cache->sp_offset;
+ }
+ else if (IS_MOV_ARG_TO_IND_R14_WITH_DISP (inst))
+ {
+ reg = GET_SOURCE_REG (inst);
+ offset = (inst & 0xf) * 4;
+ if (cache->sp_offset > offset)
+ cache->saved_regs[reg] = cache->sp_offset - offset;
+ }
+ else if (IS_MOV_ARG_TO_REG (inst))
+ continue;
+ else
+ break;
}
- else if (IS_MOV_SP_FP (w))
+ break;
+ }
+ else if (IS_JSR (inst))
+ {
+ /* We have found a jsr that has been scheduled into the prologue.
+ If we continue the scan and return a pc someplace after this,
+ then setting a breakpoint on this function will cause it to
+ appear to be called after the function it is calling via the
+ jsr, which will be very confusing. Most likely the next
+ instruction is going to be IS_MOV_SP_FP in the delay slot. If
+ so, note that before returning the current pc. */
+ if (pc + 2 < limit_pc)
{
- start_pc = here;
- updated_fp = 1;
+ inst = read_memory_integer (pc + 2, 2, byte_order);
+ if (IS_MOV_SP_FP (inst))
+ cache->uses_fp = 1;
}
- else
- if (updated_fp)
- {
- /* Don't bail out yet, we may have arguments stored in
- registers here, according to the debug info, so that
- gdb can print the frames correctly. */
- start_pc = look_for_args_moves (here - insn_size, media_mode);
- break;
- }
+ break;
}
+#if 0 /* This used to just stop when it found an instruction
+ that was not considered part of the prologue. Now,
+ we just keep going looking for likely
+ instructions. */
+ else
+ break;
+#endif
}
- return start_pc;
+ return pc;
}
+/* Skip any prologue before the guts of a function. */
static CORE_ADDR
-sh_skip_prologue (CORE_ADDR pc)
+sh_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
{
- CORE_ADDR post_prologue_pc;
+ CORE_ADDR post_prologue_pc, func_addr, func_end_addr, limit_pc;
+ struct sh_frame_cache cache;
/* See if we can determine the end of the prologue via the symbol table.
If so, then return either PC, or the PC after the prologue, whichever
is greater. */
- post_prologue_pc = after_prologue (pc);
+ if (find_pc_partial_function (pc, NULL, &func_addr, &func_end_addr))
+ {
+ post_prologue_pc = skip_prologue_using_sal (gdbarch, func_addr);
+ if (post_prologue_pc != 0)
+ return max (pc, post_prologue_pc);
+ }
- /* If after_prologue returned a useful address, then use it. Else
- fall back on the instruction skipping code. */
- if (post_prologue_pc != 0)
- return max (pc, post_prologue_pc);
- else
- return (skip_prologue_hard_way (pc));
-}
+ /* Can't determine prologue from the symbol table, need to examine
+ instructions. */
-/* Immediately after a function call, return the saved pc.
- Can't always go through the frames for this because on some machines
- the new frame is not set up until the new function executes
- some instructions.
+ /* Find an upper limit on the function prologue using the debug
+ information. If the debug information could not be used to provide
+ that bound, then use an arbitrary large number as the upper bound. */
+ limit_pc = skip_prologue_using_sal (gdbarch, pc);
+ if (limit_pc == 0)
+ /* Don't go any further than 28 instructions. */
+ limit_pc = pc + (2 * 28);
- The return address is the value saved in the PR register + 4 */
-static CORE_ADDR
-sh_saved_pc_after_call (struct frame_info *frame)
-{
- return (ADDR_BITS_REMOVE (read_register (gdbarch_tdep (current_gdbarch)->PR_REGNUM)));
+ /* Do not allow limit_pc to be past the function end, if we know
+ where that end is... */
+ if (func_end_addr != 0)
+ limit_pc = min (limit_pc, func_end_addr);
+
+ cache.sp_offset = -4;
+ post_prologue_pc = sh_analyze_prologue (gdbarch, pc, limit_pc, &cache, 0);
+ if (cache.uses_fp)
+ pc = post_prologue_pc;
+
+ return pc;
}
-/* Should call_function allocate stack space for a struct return? */
+/* The ABI says:
+
+ Aggregate types not bigger than 8 bytes that have the same size and
+ alignment as one of the integer scalar types are returned in the
+ same registers as the integer type they match.
+
+ For example, a 2-byte aligned structure with size 2 bytes has the
+ same size and alignment as a short int, and will be returned in R0.
+ A 4-byte aligned structure with size 8 bytes has the same size and
+ alignment as a long long int, and will be returned in R0 and R1.
+
+ When an aggregate type is returned in R0 and R1, R0 contains the
+ first four bytes of the aggregate, and R1 contains the
+ remainder. If the size of the aggregate type is not a multiple of 4
+ bytes, the aggregate is tail-padded up to a multiple of 4
+ bytes. The value of the padding is undefined. For little-endian
+ targets the padding will appear at the most significant end of the
+ last element, for big-endian targets the padding appears at the
+ least significant end of the last element.
+
+ All other aggregate types are returned by address. The caller
+ function passes the address of an area large enough to hold the
+ aggregate value in R2. The called function stores the result in
+ this location.
+
+ To reiterate, structs smaller than 8 bytes could also be returned
+ in memory, if they don't pass the "same size and alignment as an
+ integer type" rule.
+
+ For example, in
+
+ struct s { char c[3]; } wibble;
+ struct s foo(void) { return wibble; }
+
+ the return value from foo() will be in memory, not
+ in R0, because there is no 3-byte integer type.
+
+ Similarly, in
+
+ struct s { char c[2]; } wibble;
+ struct s foo(void) { return wibble; }
+
+ because a struct containing two chars has alignment 1, that matches
+ type char, but size 2, that matches type short. There's no integer
+ type that has alignment 1 and size 2, so the struct is returned in
+ memory. */
+
static int
-sh_use_struct_convention (int gcc_p, struct type *type)
+sh_use_struct_convention (int renesas_abi, struct type *type)
{
-#if 0
- return (TYPE_LENGTH (type) > 1);
-#else
int len = TYPE_LENGTH (type);
int nelem = TYPE_NFIELDS (type);
- return ((len != 1 && len != 2 && len != 4 && len != 8) || nelem != 1) &&
- (len != 8 || TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) != 4);
-#endif
-}
-static int
-sh64_use_struct_convention (int gcc_p, struct type *type)
-{
- return (TYPE_LENGTH (type) > 8);
-}
+ /* The Renesas ABI returns aggregate types always on stack. */
+ if (renesas_abi && (TYPE_CODE (type) == TYPE_CODE_STRUCT
+ || TYPE_CODE (type) == TYPE_CODE_UNION))
+ return 1;
-/* Store the address of the place in which to copy the structure the
- subroutine will return. This is called from call_function.
+ /* Non-power of 2 length types and types bigger than 8 bytes (which don't
+ fit in two registers anyway) use struct convention. */
+ if (len != 1 && len != 2 && len != 4 && len != 8)
+ return 1;
- We store structs through a pointer passed in R2 */
-static void
-sh_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
-{
- write_register (STRUCT_RETURN_REGNUM, (addr));
+ /* Scalar types and aggregate types with exactly one field are aligned
+ by definition. They are returned in registers. */
+ if (nelem <= 1)
+ return 0;
+
+ /* If the first field in the aggregate has the same length as the entire
+ aggregate type, the type is returned in registers. */
+ if (TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) == len)
+ return 0;
+
+ /* If the size of the aggregate is 8 bytes and the first field is
+ of size 4 bytes its alignment is equal to long long's alignment,
+ so it's returned in registers. */
+ if (len == 8 && TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) == 4)
+ return 0;
+
+ /* Otherwise use struct convention. */
+ return 1;
}
-/* Disassemble an instruction. */
static int
-gdb_print_insn_sh (bfd_vma memaddr, disassemble_info *info)
+sh_use_struct_convention_nofpu (int renesas_abi, struct type *type)
{
- info->endian = TARGET_BYTE_ORDER;
- return print_insn_sh (memaddr, info);
+ /* The Renesas ABI returns long longs/doubles etc. always on stack. */
+ if (renesas_abi && TYPE_NFIELDS (type) == 0 && TYPE_LENGTH (type) >= 8)
+ return 1;
+ return sh_use_struct_convention (renesas_abi, type);
}
-/* Given a GDB frame, determine the address of the calling function's
- frame. This will be used to create a new GDB frame struct, and
- then DEPRECATED_INIT_EXTRA_FRAME_INFO and DEPRECATED_INIT_FRAME_PC
- will be called for the new frame.
-
- For us, the frame address is its stack pointer value, so we look up
- the function prologue to determine the caller's sp value, and return it. */
static CORE_ADDR
-sh_frame_chain (struct frame_info *frame)
+sh_frame_align (struct gdbarch *ignore, CORE_ADDR sp)
{
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
- get_frame_base (frame),
- get_frame_base (frame)))
- return get_frame_base (frame); /* dummy frame same as caller's frame */
- if (get_frame_pc (frame) && !inside_entry_file (get_frame_pc (frame)))
- return read_memory_integer (get_frame_base (frame)
- + get_frame_extra_info (frame)->f_offset, 4);
- else
- return 0;
+ return sp & ~3;
}
-/* Given a register number RN as it appears in an assembly
- instruction, find the corresponding register number in the GDB
- scheme. */
-static int
-translate_insn_rn (int rn, int media_mode)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- /* FIXME: this assumes that the number rn is for a not pseudo
- register only. */
- if (media_mode)
- return rn;
- else
- {
- /* These registers don't have a corresponding compact one. */
- /* FIXME: This is probably not enough. */
-#if 0
- if ((rn >= 16 && rn <= 63) || (rn >= 93 && rn <= 140))
- return rn;
-#endif
- if (rn >= 0 && rn <= tdep->R0_C_REGNUM)
- return tdep->R0_C_REGNUM + rn;
- else
- return rn;
- }
-}
-
-static CORE_ADDR
-sh64_frame_chain (struct frame_info *frame)
-{
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
- get_frame_base (frame),
- get_frame_base (frame)))
- return get_frame_base (frame); /* dummy frame same as caller's frame */
- if (get_frame_pc (frame) && !inside_entry_file (get_frame_pc (frame)))
- {
- int media_mode = pc_is_isa32 (get_frame_pc (frame));
- int size;
- if (gdbarch_tdep (current_gdbarch)->sh_abi == SH_ABI_32)
- size = 4;
- else
- size = REGISTER_RAW_SIZE (translate_insn_rn (DEPRECATED_FP_REGNUM, media_mode));
- return read_memory_integer (get_frame_base (frame)
- + get_frame_extra_info (frame)->f_offset,
- size);
- }
- else
- return 0;
-}
-
-/* Find REGNUM on the stack. Otherwise, it's in an active register. One thing
- we might want to do here is to check REGNUM against the clobber mask, and
- somehow flag it as invalid if it isn't saved on the stack somewhere. This
- would provide a graceful failure mode when trying to get the value of
- caller-saves registers for an inner frame. */
-static CORE_ADDR
-sh_find_callers_reg (struct frame_info *fi, int regnum)
-{
- for (; fi; fi = get_next_frame (fi))
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
- get_frame_base (fi)))
- /* When the caller requests PR from the dummy frame, we return PC because
- that's where the previous routine appears to have done a call from. */
- return deprecated_read_register_dummy (get_frame_pc (fi),
- get_frame_base (fi), regnum);
- else
- {
- DEPRECATED_FRAME_INIT_SAVED_REGS (fi);
- if (!get_frame_pc (fi))
- return 0;
- if (get_frame_saved_regs (fi)[regnum] != 0)
- return read_memory_integer (get_frame_saved_regs (fi)[regnum],
- REGISTER_RAW_SIZE (regnum));
- }
- return read_register (regnum);
-}
-
-static CORE_ADDR
-sh64_get_saved_pr (struct frame_info *fi, int pr_regnum)
-{
- int media_mode = 0;
-
- for (; fi; fi = get_next_frame (fi))
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
- get_frame_base (fi)))
- /* When the caller requests PR from the dummy frame, we return PC because
- that's where the previous routine appears to have done a call from. */
- return deprecated_read_register_dummy (get_frame_pc (fi),
- get_frame_base (fi), pr_regnum);
- else
- {
- DEPRECATED_FRAME_INIT_SAVED_REGS (fi);
- if (!get_frame_pc (fi))
- return 0;
-
- media_mode = pc_is_isa32 (get_frame_pc (fi));
-
- if (get_frame_saved_regs (fi)[pr_regnum] != 0)
- {
- int gdb_reg_num = translate_insn_rn (pr_regnum, media_mode);
- int size = ((gdbarch_tdep (current_gdbarch)->sh_abi == SH_ABI_32)
- ? 4
- : REGISTER_RAW_SIZE (gdb_reg_num));
- return read_memory_integer (get_frame_saved_regs (fi)[pr_regnum], size);
- }
- }
- return read_register (pr_regnum);
-}
+/* Function: push_dummy_call (formerly push_arguments)
+ Setup the function arguments for calling a function in the inferior.
-/* Put here the code to store, into a struct frame_saved_regs, the
- addresses of the saved registers of frame described by FRAME_INFO.
- This includes special registers such as pc and fp saved in special
- ways in the stack frame. sp is even more special: the address we
- return for it IS the sp for the next frame. */
-static void
-sh_nofp_frame_init_saved_regs (struct frame_info *fi)
-{
- int *where = (int *) alloca ((NUM_REGS + NUM_PSEUDO_REGS) * sizeof(int));
- int rn;
- int have_fp = 0;
- int depth;
- int pc;
- int opc;
- int insn;
- int r3_val = 0;
- char *dummy_regs = deprecated_generic_find_dummy_frame (get_frame_pc (fi),
- get_frame_base (fi));
-
- if (get_frame_saved_regs (fi) == NULL)
- frame_saved_regs_zalloc (fi);
- else
- memset (get_frame_saved_regs (fi), 0, SIZEOF_FRAME_SAVED_REGS);
-
- if (dummy_regs)
- {
- /* DANGER! This is ONLY going to work if the char buffer format of
- the saved registers is byte-for-byte identical to the
- CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */
- memcpy (get_frame_saved_regs (fi), dummy_regs, SIZEOF_FRAME_SAVED_REGS);
- return;
- }
+ On the Renesas SH architecture, there are four registers (R4 to R7)
+ which are dedicated for passing function arguments. Up to the first
+ four arguments (depending on size) may go into these registers.
+ The rest go on the stack.
- get_frame_extra_info (fi)->leaf_function = 1;
- get_frame_extra_info (fi)->f_offset = 0;
+ MVS: Except on SH variants that have floating point registers.
+ In that case, float and double arguments are passed in the same
+ manner, but using FP registers instead of GP registers.
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
- where[rn] = -1;
+ Arguments that are smaller than 4 bytes will still take up a whole
+ register or a whole 32-bit word on the stack, and will be
+ right-justified in the register or the stack word. This includes
+ chars, shorts, and small aggregate types.
- depth = 0;
+ Arguments that are larger than 4 bytes may be split between two or
+ more registers. If there are not enough registers free, an argument
+ may be passed partly in a register (or registers), and partly on the
+ stack. This includes doubles, long longs, and larger aggregates.
+ As far as I know, there is no upper limit to the size of aggregates
+ that will be passed in this way; in other words, the convention of
+ passing a pointer to a large aggregate instead of a copy is not used.
- /* Loop around examining the prologue insns until we find something
- that does not appear to be part of the prologue. But give up
- after 20 of them, since we're getting silly then. */
+ MVS: The above appears to be true for the SH variants that do not
+ have an FPU, however those that have an FPU appear to copy the
+ aggregate argument onto the stack (and not place it in registers)
+ if it is larger than 16 bytes (four GP registers).
- pc = get_frame_func (fi);
- if (!pc)
- {
- deprecated_update_frame_pc_hack (fi, 0);
- return;
- }
+ An exceptional case exists for struct arguments (and possibly other
+ aggregates such as arrays) if the size is larger than 4 bytes but
+ not a multiple of 4 bytes. In this case the argument is never split
+ between the registers and the stack, but instead is copied in its
+ entirety onto the stack, AND also copied into as many registers as
+ there is room for. In other words, space in registers permitting,
+ two copies of the same argument are passed in. As far as I can tell,
+ only the one on the stack is used, although that may be a function
+ of the level of compiler optimization. I suspect this is a compiler
+ bug. Arguments of these odd sizes are left-justified within the
+ word (as opposed to arguments smaller than 4 bytes, which are
+ right-justified).
- for (opc = pc + (2 * 28); pc < opc; pc += 2)
- {
- insn = read_memory_integer (pc, 2);
- /* See where the registers will be saved to */
- if (IS_PUSH (insn))
- {
- rn = GET_PUSHED_REG (insn);
- where[rn] = depth;
- depth += 4;
- }
- else if (IS_STS (insn))
- {
- where[gdbarch_tdep (current_gdbarch)->PR_REGNUM] = depth;
- /* If we're storing the pr then this isn't a leaf */
- get_frame_extra_info (fi)->leaf_function = 0;
- depth += 4;
- }
- else if (IS_MOV_R3 (insn))
- {
- r3_val = ((insn & 0xff) ^ 0x80) - 0x80;
- }
- else if (IS_SHLL_R3 (insn))
- {
- r3_val <<= 1;
- }
- else if (IS_ADD_R3SP (insn))
- {
- depth += -r3_val;
- }
- else if (IS_ADD_SP (insn))
- {
- depth -= ((insn & 0xff) ^ 0x80) - 0x80;
- }
- else if (IS_MOV_SP_FP (insn))
- break;
-#if 0 /* This used to just stop when it found an instruction that
- was not considered part of the prologue. Now, we just
- keep going looking for likely instructions. */
- else
- break;
-#endif
- }
+ If the function is to return an aggregate type such as a struct, it
+ is either returned in the normal return value register R0 (if its
+ size is no greater than one byte), or else the caller must allocate
+ space into which the callee will copy the return value (if the size
+ is greater than one byte). In this case, a pointer to the return
+ value location is passed into the callee in register R2, which does
+ not displace any of the other arguments passed in via registers R4
+ to R7. */
- /* Now we know how deep things are, we can work out their addresses */
+/* Helper function to justify value in register according to endianess. */
+static const gdb_byte *
+sh_justify_value_in_reg (struct gdbarch *gdbarch, struct value *val, int len)
+{
+ static gdb_byte valbuf[4];
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
+ memset (valbuf, 0, sizeof (valbuf));
+ if (len < 4)
{
- if (where[rn] >= 0)
- {
- if (rn == DEPRECATED_FP_REGNUM)
- have_fp = 1;
-
- get_frame_saved_regs (fi)[rn] = get_frame_base (fi) - where[rn] + depth - 4;
- }
+ /* value gets right-justified in the register or stack word. */
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
+ memcpy (valbuf + (4 - len), value_contents (val), len);
else
- {
- get_frame_saved_regs (fi)[rn] = 0;
- }
- }
-
- if (have_fp)
- {
- get_frame_saved_regs (fi)[SP_REGNUM] = read_memory_integer (get_frame_saved_regs (fi)[DEPRECATED_FP_REGNUM], 4);
+ memcpy (valbuf, value_contents (val), len);
+ return valbuf;
}
- else
- {
- get_frame_saved_regs (fi)[SP_REGNUM] = get_frame_base (fi) - 4;
- }
-
- get_frame_extra_info (fi)->f_offset = depth - where[DEPRECATED_FP_REGNUM] - 4;
- /* Work out the return pc - either from the saved pr or the pr
- value */
-}
-
-/* For vectors of 4 floating point registers. */
-static int
-fv_reg_base_num (int fv_regnum)
-{
- int fp_regnum;
-
- fp_regnum = FP0_REGNUM +
- (fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_REGNUM) * 4;
- return fp_regnum;
+ return value_contents (val);
}
-/* For double precision floating point registers, i.e 2 fp regs.*/
-static int
-dr_reg_base_num (int dr_regnum)
-{
- int fp_regnum;
-
- fp_regnum = FP0_REGNUM +
- (dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM) * 2;
- return fp_regnum;
-}
-
-/* For pairs of floating point registers */
-static int
-fpp_reg_base_num (int fpp_regnum)
+/* Helper function to eval number of bytes to allocate on stack. */
+static CORE_ADDR
+sh_stack_allocsize (int nargs, struct value **args)
{
- int fp_regnum;
-
- fp_regnum = FP0_REGNUM +
- (fpp_regnum - gdbarch_tdep (current_gdbarch)->FPP0_REGNUM) * 2;
- return fp_regnum;
+ int stack_alloc = 0;
+ while (nargs-- > 0)
+ stack_alloc += ((TYPE_LENGTH (value_type (args[nargs])) + 3) & ~3);
+ return stack_alloc;
}
-static int
-is_media_pseudo (int rn)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+/* Helper functions for getting the float arguments right. Registers usage
+ depends on the ABI and the endianess. The comments should enlighten how
+ it's intended to work. */
- return (rn >= tdep->DR0_REGNUM
- && rn <= tdep->FV_LAST_REGNUM);
-}
+/* This array stores which of the float arg registers are already in use. */
+static int flt_argreg_array[FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM + 1];
-static int
-sh64_get_gdb_regnum (int gcc_regnum, CORE_ADDR pc)
+/* This function just resets the above array to "no reg used so far". */
+static void
+sh_init_flt_argreg (void)
{
- return translate_insn_rn (gcc_regnum, pc_is_isa32 (pc));
+ memset (flt_argreg_array, 0, sizeof flt_argreg_array);
}
-static int
-sh64_media_reg_base_num (int reg_nr)
-{
- int base_regnum = -1;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
- base_regnum = dr_reg_base_num (reg_nr);
-
- else if (reg_nr >= tdep->FPP0_REGNUM
- && reg_nr <= tdep->FPP_LAST_REGNUM)
- base_regnum = fpp_reg_base_num (reg_nr);
-
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- base_regnum = fv_reg_base_num (reg_nr);
+/* This function returns the next register to use for float arg passing.
+ It returns either a valid value between FLOAT_ARG0_REGNUM and
+ FLOAT_ARGLAST_REGNUM if a register is available, otherwise it returns
+ FLOAT_ARGLAST_REGNUM + 1 to indicate that no register is available.
- return base_regnum;
-}
-
-/* *INDENT-OFF* */
-/*
- SH COMPACT MODE (ISA 16) (all pseudo) 221-272
- GDB_REGNUM BASE_REGNUM
- r0_c 221 0
- r1_c 222 1
- r2_c 223 2
- r3_c 224 3
- r4_c 225 4
- r5_c 226 5
- r6_c 227 6
- r7_c 228 7
- r8_c 229 8
- r9_c 230 9
- r10_c 231 10
- r11_c 232 11
- r12_c 233 12
- r13_c 234 13
- r14_c 235 14
- r15_c 236 15
-
- pc_c 237 64
- gbr_c 238 16
- mach_c 239 17
- macl_c 240 17
- pr_c 241 18
- t_c 242 19
- fpscr_c 243 76
- fpul_c 244 109
-
- fr0_c 245 77
- fr1_c 246 78
- fr2_c 247 79
- fr3_c 248 80
- fr4_c 249 81
- fr5_c 250 82
- fr6_c 251 83
- fr7_c 252 84
- fr8_c 253 85
- fr9_c 254 86
- fr10_c 255 87
- fr11_c 256 88
- fr12_c 257 89
- fr13_c 258 90
- fr14_c 259 91
- fr15_c 260 92
-
- dr0_c 261 77
- dr2_c 262 79
- dr4_c 263 81
- dr6_c 264 83
- dr8_c 265 85
- dr10_c 266 87
- dr12_c 267 89
- dr14_c 268 91
-
- fv0_c 269 77
- fv4_c 270 81
- fv8_c 271 85
- fv12_c 272 91
-*/
-/* *INDENT-ON* */
+ Note that register number 0 in flt_argreg_array corresponds with the
+ real float register fr4. In contrast to FLOAT_ARG0_REGNUM (value is
+ 29) the parity of the register number is preserved, which is important
+ for the double register passing test (see the "argreg & 1" test below). */
static int
-sh64_compact_reg_base_num (int reg_nr)
+sh_next_flt_argreg (struct gdbarch *gdbarch, int len, struct type *func_type)
{
- int base_regnum = -1;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- /* general register N maps to general register N */
- if (reg_nr >= tdep->R0_C_REGNUM
- && reg_nr <= tdep->R_LAST_C_REGNUM)
- base_regnum = reg_nr - tdep->R0_C_REGNUM;
-
- /* floating point register N maps to floating point register N */
- else if (reg_nr >= tdep->FP0_C_REGNUM
- && reg_nr <= tdep->FP_LAST_C_REGNUM)
- base_regnum = reg_nr - tdep->FP0_C_REGNUM + FP0_REGNUM;
-
- /* double prec register N maps to base regnum for double prec register N */
- else if (reg_nr >= tdep->DR0_C_REGNUM
- && reg_nr <= tdep->DR_LAST_C_REGNUM)
- base_regnum = dr_reg_base_num (tdep->DR0_REGNUM
- + reg_nr - tdep->DR0_C_REGNUM);
-
- /* vector N maps to base regnum for vector register N */
- else if (reg_nr >= tdep->FV0_C_REGNUM
- && reg_nr <= tdep->FV_LAST_C_REGNUM)
- base_regnum = fv_reg_base_num (tdep->FV0_REGNUM
- + reg_nr - tdep->FV0_C_REGNUM);
-
- else if (reg_nr == tdep->PC_C_REGNUM)
- base_regnum = PC_REGNUM;
-
- else if (reg_nr == tdep->GBR_C_REGNUM)
- base_regnum = 16;
-
- else if (reg_nr == tdep->MACH_C_REGNUM
- || reg_nr == tdep->MACL_C_REGNUM)
- base_regnum = 17;
-
- else if (reg_nr == tdep->PR_C_REGNUM)
- base_regnum = 18;
-
- else if (reg_nr == tdep->T_C_REGNUM)
- base_regnum = 19;
-
- else if (reg_nr == tdep->FPSCR_C_REGNUM)
- base_regnum = tdep->FPSCR_REGNUM; /*???? this register is a mess. */
-
- else if (reg_nr == tdep->FPUL_C_REGNUM)
- base_regnum = FP0_REGNUM + 32;
-
- return base_regnum;
-}
-
-/* Given a register number RN (according to the gdb scheme) , return
- its corresponding architectural register. In media mode, only a
- subset of the registers is pseudo registers. For compact mode, all
- the registers are pseudo. */
-static int
-translate_rn_to_arch_reg_num (int rn, int media_mode)
-{
-
- if (media_mode)
- {
- if (!is_media_pseudo (rn))
- return rn;
- else
- return sh64_media_reg_base_num (rn);
- }
- else
- /* All compact registers are pseudo. */
- return sh64_compact_reg_base_num (rn);
-}
-
-static int
-sign_extend (int value, int bits)
-{
- value = value & ((1 << bits) - 1);
- return (value & (1 << (bits - 1))
- ? value | (~((1 << bits) - 1))
- : value);
-}
-
-static void
-sh64_nofp_frame_init_saved_regs (struct frame_info *fi)
-{
- int *where = (int *) alloca ((NUM_REGS + NUM_PSEUDO_REGS) * sizeof (int));
- int rn;
- int have_fp = 0;
- int fp_regnum;
- int sp_regnum;
- int depth;
- int pc;
- int opc;
- int insn;
- int r0_val = 0;
- int media_mode = 0;
- int insn_size;
- int gdb_register_number;
- int register_number;
- char *dummy_regs = deprecated_generic_find_dummy_frame (get_frame_pc (fi), get_frame_base (fi));
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (get_frame_saved_regs (fi) == NULL)
- frame_saved_regs_zalloc (fi);
- else
- memset (get_frame_saved_regs (fi), 0, SIZEOF_FRAME_SAVED_REGS);
-
- if (dummy_regs)
- {
- /* DANGER! This is ONLY going to work if the char buffer format of
- the saved registers is byte-for-byte identical to the
- CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */
- memcpy (get_frame_saved_regs (fi), dummy_regs, SIZEOF_FRAME_SAVED_REGS);
- return;
- }
-
- get_frame_extra_info (fi)->leaf_function = 1;
- get_frame_extra_info (fi)->f_offset = 0;
-
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
- where[rn] = -1;
-
- depth = 0;
-
- /* Loop around examining the prologue insns until we find something
- that does not appear to be part of the prologue. But give up
- after 20 of them, since we're getting silly then. */
-
- pc = get_frame_func (fi);
- if (!pc)
- {
- deprecated_update_frame_pc_hack (fi, 0);
- return;
- }
+ int argreg;
- if (pc_is_isa32 (pc))
- {
- media_mode = 1;
- insn_size = 4;
- }
- else
- {
- media_mode = 0;
- insn_size = 2;
- }
+ /* First search for the next free register. */
+ for (argreg = 0; argreg <= FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM;
+ ++argreg)
+ if (!flt_argreg_array[argreg])
+ break;
- /* The frame pointer register is general register 14 in shmedia and
- shcompact modes. In sh compact it is a pseudo register. Same goes
- for the stack pointer register, which is register 15. */
- fp_regnum = translate_insn_rn (DEPRECATED_FP_REGNUM, media_mode);
- sp_regnum = translate_insn_rn (SP_REGNUM, media_mode);
+ /* No register left? */
+ if (argreg > FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM)
+ return FLOAT_ARGLAST_REGNUM + 1;
- for (opc = pc + (insn_size * 28); pc < opc; pc += insn_size)
+ if (len == 8)
{
- insn = read_memory_integer (media_mode ? UNMAKE_ISA32_ADDR (pc) : pc,
- insn_size);
-
- if (media_mode == 0)
+ /* Doubles are always starting in a even register number. */
+ if (argreg & 1)
{
- if (IS_STS_PR (insn))
- {
- int next_insn = read_memory_integer (pc + insn_size, insn_size);
- if (IS_MOV_TO_R15 (next_insn))
- {
- int reg_nr = tdep->PR_C_REGNUM;
+ /* In gcc ABI, the skipped register is lost for further argument
+ passing now. Not so in Renesas ABI. */
+ if (!sh_is_renesas_calling_convention (func_type))
+ flt_argreg_array[argreg] = 1;
- where[reg_nr] = depth - ((((next_insn & 0xf) ^ 0x8) - 0x8) << 2);
- get_frame_extra_info (fi)->leaf_function = 0;
- pc += insn_size;
- }
- }
- else if (IS_MOV_R14 (insn))
- {
- where[fp_regnum] = depth - ((((insn & 0xf) ^ 0x8) - 0x8) << 2);
- }
+ ++argreg;
- else if (IS_MOV_R0 (insn))
- {
- /* Put in R0 the offset from SP at which to store some
- registers. We are interested in this value, because it
- will tell us where the given registers are stored within
- the frame. */
- r0_val = ((insn & 0xff) ^ 0x80) - 0x80;
- }
- else if (IS_ADD_SP_R0 (insn))
- {
- /* This instruction still prepares r0, but we don't care.
- We already have the offset in r0_val. */
- }
- else if (IS_STS_R0 (insn))
- {
- /* Store PR at r0_val-4 from SP. Decrement r0 by 4*/
- int reg_nr = tdep->PR_C_REGNUM;
- where[reg_nr] = depth - (r0_val - 4);
- r0_val -= 4;
- get_frame_extra_info (fi)->leaf_function = 0;
- }
- else if (IS_MOV_R14_R0 (insn))
- {
- /* Store R14 at r0_val-4 from SP. Decrement r0 by 4 */
- where[fp_regnum] = depth - (r0_val - 4);
- r0_val -= 4;
- }
-
- else if (IS_ADD_SP (insn))
- {
- depth -= ((insn & 0xff) ^ 0x80) - 0x80;
- }
- else if (IS_MOV_SP_FP (insn))
- break;
- }
- else
- {
- if (IS_ADDIL_SP_MEDIA (insn)
- || IS_ADDI_SP_MEDIA (insn))
- {
- depth -= sign_extend ((((insn & 0xffc00) ^ 0x80000) - 0x80000) >> 10, 9);
- }
-
- else if (IS_STQ_R18_R15 (insn))
- {
- where[tdep->PR_REGNUM] =
- depth - (sign_extend ((insn & 0xffc00) >> 10, 9) << 3);
- get_frame_extra_info (fi)->leaf_function = 0;
- }
-
- else if (IS_STL_R18_R15 (insn))
- {
- where[tdep->PR_REGNUM] =
- depth - (sign_extend ((insn & 0xffc00) >> 10, 9) << 2);
- get_frame_extra_info (fi)->leaf_function = 0;
- }
-
- else if (IS_STQ_R14_R15 (insn))
- {
- where[fp_regnum] = depth - (sign_extend ((insn & 0xffc00) >> 10, 9) << 3);
- }
-
- else if (IS_STL_R14_R15 (insn))
- {
- where[fp_regnum] = depth - (sign_extend ((insn & 0xffc00) >> 10, 9) << 2);
- }
-
- else if (IS_MOV_SP_FP_MEDIA (insn))
- break;
+ /* No register left? */
+ if (argreg > FLOAT_ARGLAST_REGNUM - FLOAT_ARG0_REGNUM)
+ return FLOAT_ARGLAST_REGNUM + 1;
}
+ /* Also mark the next register as used. */
+ flt_argreg_array[argreg + 1] = 1;
}
-
- /* Now we know how deep things are, we can work out their addresses. */
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
+ else if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE
+ && !sh_is_renesas_calling_convention (func_type))
{
- register_number = translate_rn_to_arch_reg_num (rn, media_mode);
-
- if (where[rn] >= 0)
- {
- if (rn == fp_regnum)
- have_fp = 1;
-
- /* Watch out! saved_regs is only for the real registers, and
- doesn't include space for the pseudo registers. */
- get_frame_saved_regs (fi)[register_number]= get_frame_base (fi) - where[rn] + depth;
-
- }
- else
- get_frame_saved_regs (fi)[register_number] = 0;
- }
-
- if (have_fp)
- {
- /* SP_REGNUM is 15. For shmedia 15 is the real register. For
- shcompact 15 is the arch register corresponding to the pseudo
- register r15 which still is the SP register. */
- /* The place on the stack where fp is stored contains the sp of
- the caller. */
- /* Again, saved_registers contains only space for the real
- registers, so we store in DEPRECATED_FP_REGNUM position. */
- int size;
- if (tdep->sh_abi == SH_ABI_32)
- size = 4;
- else
- size = REGISTER_RAW_SIZE (fp_regnum);
- get_frame_saved_regs (fi)[sp_regnum] = read_memory_integer (get_frame_saved_regs (fi)[fp_regnum], size);
+ /* In little endian, gcc passes floats like this: f5, f4, f7, f6, ... */
+ if (!flt_argreg_array[argreg + 1])
+ ++argreg;
}
- else
- get_frame_saved_regs (fi)[sp_regnum] = get_frame_base (fi);
-
- get_frame_extra_info (fi)->f_offset = depth - where[fp_regnum];
+ flt_argreg_array[argreg] = 1;
+ return FLOAT_ARG0_REGNUM + argreg;
}
-static void
-sh_fp_frame_init_saved_regs (struct frame_info *fi)
-{
- int *where = (int *) alloca ((NUM_REGS + NUM_PSEUDO_REGS) * sizeof (int));
- int rn;
- int have_fp = 0;
- int depth;
- int pc;
- int opc;
- int insn;
- int r3_val = 0;
- char *dummy_regs = deprecated_generic_find_dummy_frame (get_frame_pc (fi), get_frame_base (fi));
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (get_frame_saved_regs (fi) == NULL)
- frame_saved_regs_zalloc (fi);
- else
- memset (get_frame_saved_regs (fi), 0, SIZEOF_FRAME_SAVED_REGS);
-
- if (dummy_regs)
- {
- /* DANGER! This is ONLY going to work if the char buffer format of
- the saved registers is byte-for-byte identical to the
- CORE_ADDR regs[NUM_REGS] format used by struct frame_saved_regs! */
- memcpy (get_frame_saved_regs (fi), dummy_regs, SIZEOF_FRAME_SAVED_REGS);
- return;
- }
-
- get_frame_extra_info (fi)->leaf_function = 1;
- get_frame_extra_info (fi)->f_offset = 0;
+/* Helper function which figures out, if a type is treated like a float type.
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
- where[rn] = -1;
+ The FPU ABIs have a special way how to treat types as float types.
+ Structures with exactly one member, which is of type float or double, are
+ treated exactly as the base types float or double:
- depth = 0;
+ struct sf {
+ float f;
+ };
- /* Loop around examining the prologue insns until we find something
- that does not appear to be part of the prologue. But give up
- after 20 of them, since we're getting silly then. */
-
- pc = get_frame_func (fi);
- if (!pc)
- {
- deprecated_update_frame_pc_hack (fi, 0);
- return;
- }
-
- for (opc = pc + (2 * 28); pc < opc; pc += 2)
- {
- insn = read_memory_integer (pc, 2);
- /* See where the registers will be saved to */
- if (IS_PUSH (insn))
- {
- rn = GET_PUSHED_REG (insn);
- where[rn] = depth;
- depth += 4;
- }
- else if (IS_STS (insn))
- {
- where[tdep->PR_REGNUM] = depth;
- /* If we're storing the pr then this isn't a leaf */
- get_frame_extra_info (fi)->leaf_function = 0;
- depth += 4;
- }
- else if (IS_MOV_R3 (insn))
- {
- r3_val = ((insn & 0xff) ^ 0x80) - 0x80;
- }
- else if (IS_SHLL_R3 (insn))
- {
- r3_val <<= 1;
- }
- else if (IS_ADD_R3SP (insn))
- {
- depth += -r3_val;
- }
- else if (IS_ADD_SP (insn))
- {
- depth -= ((insn & 0xff) ^ 0x80) - 0x80;
- }
- else if (IS_FMOV (insn))
- {
- if (read_register (tdep->FPSCR_REGNUM) & FPSCR_SZ)
- {
- depth += 8;
- }
- else
- {
- depth += 4;
- }
- }
- else if (IS_MOV_SP_FP (insn))
- break;
-#if 0 /* This used to just stop when it found an instruction that
- was not considered part of the prologue. Now, we just
- keep going looking for likely instructions. */
- else
- break;
-#endif
- }
+ struct sd {
+ double d;
+ };
- /* Now we know how deep things are, we can work out their addresses */
+ are handled the same way as just
- for (rn = 0; rn < NUM_REGS + NUM_PSEUDO_REGS; rn++)
- {
- if (where[rn] >= 0)
- {
- if (rn == DEPRECATED_FP_REGNUM)
- have_fp = 1;
+ float f;
- get_frame_saved_regs (fi)[rn] = get_frame_base (fi) - where[rn] + depth - 4;
- }
- else
- {
- get_frame_saved_regs (fi)[rn] = 0;
- }
- }
+ double d;
- if (have_fp)
- {
- get_frame_saved_regs (fi)[SP_REGNUM] =
- read_memory_integer (get_frame_saved_regs (fi)[DEPRECATED_FP_REGNUM], 4);
- }
- else
- {
- get_frame_saved_regs (fi)[SP_REGNUM] = get_frame_base (fi) - 4;
- }
+ As a result, arguments of these struct types are pushed into floating point
+ registers exactly as floats or doubles, using the same decision algorithm.
- get_frame_extra_info (fi)->f_offset = depth - where[DEPRECATED_FP_REGNUM] - 4;
- /* Work out the return pc - either from the saved pr or the pr
- value */
-}
+ The same is valid if these types are used as function return types. The
+ above structs are returned in fr0 resp. fr0,fr1 instead of in r0, r0,r1
+ or even using struct convention as it is for other structs. */
-/* Initialize the extra info saved in a FRAME */
-static void
-sh_init_extra_frame_info (int fromleaf, struct frame_info *fi)
-{
-
- frame_extra_info_zalloc (fi, sizeof (struct frame_extra_info));
-
- if (get_next_frame (fi))
- deprecated_update_frame_pc_hack (fi, DEPRECATED_FRAME_SAVED_PC (get_next_frame (fi)));
-
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
- get_frame_base (fi)))
- {
- /* We need to setup fi->frame here because call_function_by_hand
- gets it wrong by assuming it's always FP. */
- deprecated_update_frame_base_hack (fi, deprecated_read_register_dummy (get_frame_pc (fi), get_frame_base (fi),
- SP_REGNUM));
- get_frame_extra_info (fi)->return_pc = deprecated_read_register_dummy (get_frame_pc (fi),
- get_frame_base (fi),
- PC_REGNUM);
- get_frame_extra_info (fi)->f_offset = -(DEPRECATED_CALL_DUMMY_LENGTH + 4);
- get_frame_extra_info (fi)->leaf_function = 0;
- return;
- }
- else
- {
- DEPRECATED_FRAME_INIT_SAVED_REGS (fi);
- get_frame_extra_info (fi)->return_pc =
- sh_find_callers_reg (fi, gdbarch_tdep (current_gdbarch)->PR_REGNUM);
- }
-}
-
-static void
-sh64_init_extra_frame_info (int fromleaf, struct frame_info *fi)
+static int
+sh_treat_as_flt_p (struct type *type)
{
- int media_mode = pc_is_isa32 (get_frame_pc (fi));
-
- frame_extra_info_zalloc (fi, sizeof (struct frame_extra_info));
-
- if (get_next_frame (fi))
- deprecated_update_frame_pc_hack (fi, DEPRECATED_FRAME_SAVED_PC (get_next_frame (fi)));
-
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
- get_frame_base (fi)))
- {
- /* We need to setup fi->frame here because call_function_by_hand
- gets it wrong by assuming it's always FP. */
- deprecated_update_frame_base_hack (fi, deprecated_read_register_dummy (get_frame_pc (fi), get_frame_base (fi), SP_REGNUM));
- get_frame_extra_info (fi)->return_pc =
- deprecated_read_register_dummy (get_frame_pc (fi),
- get_frame_base (fi), PC_REGNUM);
- get_frame_extra_info (fi)->f_offset = -(DEPRECATED_CALL_DUMMY_LENGTH + 4);
- get_frame_extra_info (fi)->leaf_function = 0;
- return;
- }
- else
- {
- DEPRECATED_FRAME_INIT_SAVED_REGS (fi);
- get_frame_extra_info (fi)->return_pc =
- sh64_get_saved_pr (fi, gdbarch_tdep (current_gdbarch)->PR_REGNUM);
- }
+ /* Ordinary float types are obviously treated as float. */
+ if (TYPE_CODE (type) == TYPE_CODE_FLT)
+ return 1;
+ /* Otherwise non-struct types are not treated as float. */
+ if (TYPE_CODE (type) != TYPE_CODE_STRUCT)
+ return 0;
+ /* Otherwise structs with more than one memeber are not treated as float. */
+ if (TYPE_NFIELDS (type) != 1)
+ return 0;
+ /* Otherwise if the type of that member is float, the whole type is
+ treated as float. */
+ if (TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_FLT)
+ return 1;
+ /* Otherwise it's not treated as float. */
+ return 0;
}
-static void
-sh64_get_saved_register (char *raw_buffer, int *optimized, CORE_ADDR *addrp,
- struct frame_info *frame, int regnum,
- enum lval_type *lval)
-{
- int media_mode;
- int live_regnum = regnum;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (!target_has_registers)
- error ("No registers.");
-
- /* Normal systems don't optimize out things with register numbers. */
- if (optimized != NULL)
- *optimized = 0;
+static CORE_ADDR
+sh_push_dummy_call_fpu (struct gdbarch *gdbarch,
+ struct value *function,
+ struct regcache *regcache,
+ CORE_ADDR bp_addr, int nargs,
+ struct value **args,
+ CORE_ADDR sp, int struct_return,
+ CORE_ADDR struct_addr)
+{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int stack_offset = 0;
+ int argreg = ARG0_REGNUM;
+ int flt_argreg = 0;
+ int argnum;
+ struct type *func_type = value_type (function);
+ struct type *type;
+ CORE_ADDR regval;
+ const gdb_byte *val;
+ int len, reg_size = 0;
+ int pass_on_stack = 0;
+ int treat_as_flt;
+ int last_reg_arg = INT_MAX;
- if (addrp) /* default assumption: not found in memory */
- *addrp = 0;
+ /* The Renesas ABI expects all varargs arguments, plus the last
+ non-vararg argument to be on the stack, no matter how many
+ registers have been used so far. */
+ if (sh_is_renesas_calling_convention (func_type)
+ && TYPE_VARARGS (func_type))
+ last_reg_arg = TYPE_NFIELDS (func_type) - 2;
- if (raw_buffer)
- memset (raw_buffer, 0, sizeof (raw_buffer));
+ /* First force sp to a 4-byte alignment. */
+ sp = sh_frame_align (gdbarch, sp);
- /* We must do this here, before the following while loop changes
- frame, and makes it NULL. If this is a media register number,
- but we are in compact mode, it will become the corresponding
- compact pseudo register. If there is no corresponding compact
- pseudo-register what do we do?*/
- media_mode = pc_is_isa32 (get_frame_pc (frame));
- live_regnum = translate_insn_rn (regnum, media_mode);
+ /* Make room on stack for args. */
+ sp -= sh_stack_allocsize (nargs, args);
- /* Note: since the current frame's registers could only have been
- saved by frames INTERIOR TO the current frame, we skip examining
- the current frame itself: otherwise, we would be getting the
- previous frame's registers which were saved by the current frame. */
+ /* Initialize float argument mechanism. */
+ sh_init_flt_argreg ();
- while (frame && ((frame = get_next_frame (frame)) != NULL))
+ /* Now load as many as possible of the first arguments into
+ registers, and push the rest onto the stack. There are 16 bytes
+ in four registers available. Loop thru args from first to last. */
+ for (argnum = 0; argnum < nargs; argnum++)
{
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
- get_frame_base (frame),
- get_frame_base (frame)))
- {
- if (lval) /* found it in a CALL_DUMMY frame */
- *lval = not_lval;
- if (raw_buffer)
- memcpy (raw_buffer,
- (deprecated_generic_find_dummy_frame (get_frame_pc (frame), get_frame_base (frame))
- + REGISTER_BYTE (regnum)),
- REGISTER_RAW_SIZE (regnum));
- return;
- }
+ type = value_type (args[argnum]);
+ len = TYPE_LENGTH (type);
+ val = sh_justify_value_in_reg (gdbarch, args[argnum], len);
+
+ /* Some decisions have to be made how various types are handled.
+ This also differs in different ABIs. */
+ pass_on_stack = 0;
+
+ /* Find out the next register to use for a floating point value. */
+ treat_as_flt = sh_treat_as_flt_p (type);
+ if (treat_as_flt)
+ flt_argreg = sh_next_flt_argreg (gdbarch, len, func_type);
+ /* In Renesas ABI, long longs and aggregate types are always passed
+ on stack. */
+ else if (sh_is_renesas_calling_convention (func_type)
+ && ((TYPE_CODE (type) == TYPE_CODE_INT && len == 8)
+ || TYPE_CODE (type) == TYPE_CODE_STRUCT
+ || TYPE_CODE (type) == TYPE_CODE_UNION))
+ pass_on_stack = 1;
+ /* In contrast to non-FPU CPUs, arguments are never split between
+ registers and stack. If an argument doesn't fit in the remaining
+ registers it's always pushed entirely on the stack. */
+ else if (len > ((ARGLAST_REGNUM - argreg + 1) * 4))
+ pass_on_stack = 1;
- DEPRECATED_FRAME_INIT_SAVED_REGS (frame);
- if (get_frame_saved_regs (frame) != NULL
- && get_frame_saved_regs (frame)[regnum] != 0)
+ while (len > 0)
{
- if (lval) /* found it saved on the stack */
- *lval = lval_memory;
- if (regnum == SP_REGNUM)
+ if ((treat_as_flt && flt_argreg > FLOAT_ARGLAST_REGNUM)
+ || (!treat_as_flt && (argreg > ARGLAST_REGNUM
+ || pass_on_stack))
+ || argnum > last_reg_arg)
{
- if (raw_buffer) /* SP register treated specially */
- store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum),
- get_frame_saved_regs (frame)[regnum]);
+ /* The data goes entirely on the stack, 4-byte aligned. */
+ reg_size = (len + 3) & ~3;
+ write_memory (sp + stack_offset, val, reg_size);
+ stack_offset += reg_size;
}
- else
- { /* any other register */
-
- if (addrp)
- *addrp = get_frame_saved_regs (frame)[regnum];
- if (raw_buffer)
- {
- int size;
- if (tdep->sh_abi == SH_ABI_32
- && (live_regnum == DEPRECATED_FP_REGNUM
- || live_regnum == tdep->PR_REGNUM))
- size = 4;
- else
- size = REGISTER_RAW_SIZE (live_regnum);
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE)
- read_memory (get_frame_saved_regs (frame)[regnum], raw_buffer, size);
- else
- read_memory (get_frame_saved_regs (frame)[regnum],
- raw_buffer
- + REGISTER_RAW_SIZE (live_regnum)
- - size,
- size);
+ else if (treat_as_flt && flt_argreg <= FLOAT_ARGLAST_REGNUM)
+ {
+ /* Argument goes in a float argument register. */
+ reg_size = register_size (gdbarch, flt_argreg);
+ regval = extract_unsigned_integer (val, reg_size, byte_order);
+ /* In little endian mode, float types taking two registers
+ (doubles on sh4, long doubles on sh2e, sh3e and sh4) must
+ be stored swapped in the argument registers. The below
+ code first writes the first 32 bits in the next but one
+ register, increments the val and len values accordingly
+ and then proceeds as normal by writing the second 32 bits
+ into the next register. */
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE
+ && TYPE_LENGTH (type) == 2 * reg_size)
+ {
+ regcache_cooked_write_unsigned (regcache, flt_argreg + 1,
+ regval);
+ val += reg_size;
+ len -= reg_size;
+ regval = extract_unsigned_integer (val, reg_size,
+ byte_order);
}
+ regcache_cooked_write_unsigned (regcache, flt_argreg++, regval);
}
- return;
+ else if (!treat_as_flt && argreg <= ARGLAST_REGNUM)
+ {
+ /* there's room in a register */
+ reg_size = register_size (gdbarch, argreg);
+ regval = extract_unsigned_integer (val, reg_size, byte_order);
+ regcache_cooked_write_unsigned (regcache, argreg++, regval);
+ }
+ /* Store the value one register at a time or in one step on
+ stack. */
+ len -= reg_size;
+ val += reg_size;
}
}
- /* If we get thru the loop to this point, it means the register was
- not saved in any frame. Return the actual live-register value. */
-
- if (lval) /* found it in a live register */
- *lval = lval_register;
- if (addrp)
- *addrp = REGISTER_BYTE (live_regnum);
- if (raw_buffer)
- deprecated_read_register_gen (live_regnum, raw_buffer);
-}
-
-/* Extract from an array REGBUF containing the (raw) register state
- the address in which a function should return its structure value,
- as a CORE_ADDR (or an expression that can be used as one). */
-static CORE_ADDR
-sh_extract_struct_value_address (char *regbuf)
-{
- return (extract_unsigned_integer ((regbuf), REGISTER_RAW_SIZE (0)));
-}
-
-static CORE_ADDR
-sh64_extract_struct_value_address (char *regbuf)
-{
- return (extract_unsigned_integer ((regbuf + REGISTER_BYTE (STRUCT_RETURN_REGNUM)),
- REGISTER_RAW_SIZE (STRUCT_RETURN_REGNUM)));
-}
-
-static CORE_ADDR
-sh_frame_saved_pc (struct frame_info *frame)
-{
- return (get_frame_extra_info (frame)->return_pc);
-}
-
-/* Discard from the stack the innermost frame,
- restoring all saved registers. */
-static void
-sh_pop_frame (void)
-{
- register struct frame_info *frame = get_current_frame ();
- register CORE_ADDR fp;
- register int regnum;
-
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
- get_frame_base (frame),
- get_frame_base (frame)))
- generic_pop_dummy_frame ();
- else
+ if (struct_return)
{
- fp = get_frame_base (frame);
- DEPRECATED_FRAME_INIT_SAVED_REGS (frame);
-
- /* Copy regs from where they were saved in the frame */
- for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++)
- if (get_frame_saved_regs (frame)[regnum])
- write_register (regnum,
- read_memory_integer (get_frame_saved_regs (frame)[regnum], 4));
-
- write_register (PC_REGNUM, get_frame_extra_info (frame)->return_pc);
- write_register (SP_REGNUM, fp + 4);
+ if (sh_is_renesas_calling_convention (func_type))
+ /* If the function uses the Renesas ABI, subtract another 4 bytes from
+ the stack and store the struct return address there. */
+ write_memory_unsigned_integer (sp -= 4, 4, byte_order, struct_addr);
+ else
+ /* Using the gcc ABI, the "struct return pointer" pseudo-argument has
+ its own dedicated register. */
+ regcache_cooked_write_unsigned (regcache,
+ STRUCT_RETURN_REGNUM, struct_addr);
}
- flush_cached_frames ();
-}
-/* Used in the 'return' command. */
-static void
-sh64_pop_frame (void)
-{
- register struct frame_info *frame = get_current_frame ();
- register CORE_ADDR fp;
- register int regnum;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ /* Store return address. */
+ regcache_cooked_write_unsigned (regcache, PR_REGNUM, bp_addr);
- int media_mode = pc_is_isa32 (get_frame_pc (frame));
+ /* Update stack pointer. */
+ regcache_cooked_write_unsigned (regcache,
+ gdbarch_sp_regnum (gdbarch), sp);
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
- get_frame_base (frame),
- get_frame_base (frame)))
- generic_pop_dummy_frame ();
- else
- {
- fp = get_frame_base (frame);
- DEPRECATED_FRAME_INIT_SAVED_REGS (frame);
-
- /* Copy regs from where they were saved in the frame */
- for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++)
- if (get_frame_saved_regs (frame)[regnum])
- {
- int size;
- if (tdep->sh_abi == SH_ABI_32
- && (regnum == DEPRECATED_FP_REGNUM
- || regnum == tdep->PR_REGNUM))
- size = 4;
- else
- size = REGISTER_RAW_SIZE (translate_insn_rn (regnum,
- media_mode));
- write_register (regnum,
- read_memory_integer (get_frame_saved_regs (frame)[regnum],
- size));
- }
-
- write_register (PC_REGNUM, get_frame_extra_info (frame)->return_pc);
- write_register (SP_REGNUM, fp + 8);
- }
- flush_cached_frames ();
+ return sp;
}
-/* Function: push_arguments
- Setup the function arguments for calling a function in the inferior.
-
- On the Hitachi SH architecture, there are four registers (R4 to R7)
- which are dedicated for passing function arguments. Up to the first
- four arguments (depending on size) may go into these registers.
- The rest go on the stack.
-
- Arguments that are smaller than 4 bytes will still take up a whole
- register or a whole 32-bit word on the stack, and will be
- right-justified in the register or the stack word. This includes
- chars, shorts, and small aggregate types.
-
- Arguments that are larger than 4 bytes may be split between two or
- more registers. If there are not enough registers free, an argument
- may be passed partly in a register (or registers), and partly on the
- stack. This includes doubles, long longs, and larger aggregates.
- As far as I know, there is no upper limit to the size of aggregates
- that will be passed in this way; in other words, the convention of
- passing a pointer to a large aggregate instead of a copy is not used.
-
- An exceptional case exists for struct arguments (and possibly other
- aggregates such as arrays) if the size is larger than 4 bytes but
- not a multiple of 4 bytes. In this case the argument is never split
- between the registers and the stack, but instead is copied in its
- entirety onto the stack, AND also copied into as many registers as
- there is room for. In other words, space in registers permitting,
- two copies of the same argument are passed in. As far as I can tell,
- only the one on the stack is used, although that may be a function
- of the level of compiler optimization. I suspect this is a compiler
- bug. Arguments of these odd sizes are left-justified within the
- word (as opposed to arguments smaller than 4 bytes, which are
- right-justified).
-
- If the function is to return an aggregate type such as a struct, it
- is either returned in the normal return value register R0 (if its
- size is no greater than one byte), or else the caller must allocate
- space into which the callee will copy the return value (if the size
- is greater than one byte). In this case, a pointer to the return
- value location is passed into the callee in register R2, which does
- not displace any of the other arguments passed in via registers R4
- to R7. */
-
static CORE_ADDR
-sh_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_addr)
-{
- int stack_offset, stack_alloc;
- int argreg;
+sh_push_dummy_call_nofpu (struct gdbarch *gdbarch,
+ struct value *function,
+ struct regcache *regcache,
+ CORE_ADDR bp_addr,
+ int nargs, struct value **args,
+ CORE_ADDR sp, int struct_return,
+ CORE_ADDR struct_addr)
+{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int stack_offset = 0;
+ int argreg = ARG0_REGNUM;
int argnum;
+ struct type *func_type = value_type (function);
struct type *type;
CORE_ADDR regval;
- char *val;
- char valbuf[4];
- int len;
- int odd_sized_struct;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ const gdb_byte *val;
+ int len, reg_size = 0;
+ int pass_on_stack = 0;
+ int last_reg_arg = INT_MAX;
- /* first force sp to a 4-byte alignment */
- sp = sp & ~3;
+ /* The Renesas ABI expects all varargs arguments, plus the last
+ non-vararg argument to be on the stack, no matter how many
+ registers have been used so far. */
+ if (sh_is_renesas_calling_convention (func_type)
+ && TYPE_VARARGS (func_type))
+ last_reg_arg = TYPE_NFIELDS (func_type) - 2;
- /* The "struct return pointer" pseudo-argument has its own dedicated
- register */
- if (struct_return)
- write_register (STRUCT_RETURN_REGNUM, struct_addr);
+ /* First force sp to a 4-byte alignment. */
+ sp = sh_frame_align (gdbarch, sp);
- /* Now make sure there's space on the stack */
- for (argnum = 0, stack_alloc = 0; argnum < nargs; argnum++)
- stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3);
- sp -= stack_alloc; /* make room on stack for args */
+ /* Make room on stack for args. */
+ sp -= sh_stack_allocsize (nargs, args);
/* Now load as many as possible of the first arguments into
registers, and push the rest onto the stack. There are 16 bytes
in four registers available. Loop thru args from first to last. */
-
- argreg = tdep->ARG0_REGNUM;
- for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++)
+ for (argnum = 0; argnum < nargs; argnum++)
{
- type = VALUE_TYPE (args[argnum]);
+ type = value_type (args[argnum]);
len = TYPE_LENGTH (type);
- memset (valbuf, 0, sizeof (valbuf));
- if (len < 4)
- {
- /* value gets right-justified in the register or stack word */
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- memcpy (valbuf + (4 - len),
- (char *) VALUE_CONTENTS (args[argnum]), len);
- else
- memcpy (valbuf, (char *) VALUE_CONTENTS (args[argnum]), len);
- val = valbuf;
- }
- else
- val = (char *) VALUE_CONTENTS (args[argnum]);
-
- if (len > 4 && (len & 3) != 0)
- odd_sized_struct = 1; /* such structs go entirely on stack */
- else
- odd_sized_struct = 0;
+ val = sh_justify_value_in_reg (gdbarch, args[argnum], len);
+
+ /* Some decisions have to be made how various types are handled.
+ This also differs in different ABIs. */
+ pass_on_stack = 0;
+ /* Renesas ABI pushes doubles and long longs entirely on stack.
+ Same goes for aggregate types. */
+ if (sh_is_renesas_calling_convention (func_type)
+ && ((TYPE_CODE (type) == TYPE_CODE_INT && len >= 8)
+ || (TYPE_CODE (type) == TYPE_CODE_FLT && len >= 8)
+ || TYPE_CODE (type) == TYPE_CODE_STRUCT
+ || TYPE_CODE (type) == TYPE_CODE_UNION))
+ pass_on_stack = 1;
while (len > 0)
{
- if (argreg > tdep->ARGLAST_REGNUM
- || odd_sized_struct)
- {
- /* must go on the stack */
- write_memory (sp + stack_offset, val, 4);
- stack_offset += 4;
- }
- /* NOTE WELL!!!!! This is not an "else if" clause!!!
- That's because some *&^%$ things get passed on the stack
- AND in the registers! */
- if (argreg <= tdep->ARGLAST_REGNUM)
- {
- /* there's room in a register */
- regval = extract_unsigned_integer (val, REGISTER_RAW_SIZE (argreg));
- write_register (argreg++, regval);
- }
- /* Store the value 4 bytes at a time. This means that things
- larger than 4 bytes may go partly in registers and partly
- on the stack. */
- len -= REGISTER_RAW_SIZE (argreg);
- val += REGISTER_RAW_SIZE (argreg);
- }
- }
- return sp;
-}
-
-/* R2-R9 for integer types and integer equivalent (char, pointers) and
- non-scalar (struct, union) elements (even if the elements are
- floats).
- FR0-FR11 for single precision floating point (float)
- DR0-DR10 for double precision floating point (double)
-
- If a float is argument number 3 (for instance) and arguments number
- 1,2, and 4 are integer, the mapping will be:
- arg1 -->R2, arg2 --> R3, arg3 -->FR0, arg4 --> R5. I.e. R4 is not used.
-
- If a float is argument number 10 (for instance) and arguments number
- 1 through 10 are integer, the mapping will be:
- arg1->R2, arg2->R3, arg3->R4, arg4->R5, arg5->R6, arg6->R7, arg7->R8,
- arg8->R9, arg9->(0,SP)stack(8-byte aligned), arg10->FR0, arg11->stack(16,SP).
- I.e. there is hole in the stack.
-
- Different rules apply for variable arguments functions, and for functions
- for which the prototype is not known. */
-
-static CORE_ADDR
-sh64_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_addr)
-{
- int stack_offset, stack_alloc;
- int int_argreg;
- int float_argreg;
- int double_argreg;
- int float_arg_index = 0;
- int double_arg_index = 0;
- int argnum;
- struct type *type;
- CORE_ADDR regval;
- char *val;
- char valbuf[8];
- char valbuf_tmp[8];
- int len;
- int argreg_size;
- int fp_args[12];
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- memset (fp_args, 0, sizeof (fp_args));
-
- /* first force sp to a 8-byte alignment */
- sp = sp & ~7;
-
- /* The "struct return pointer" pseudo-argument has its own dedicated
- register */
-
- if (struct_return)
- write_register (STRUCT_RETURN_REGNUM, struct_addr);
-
- /* Now make sure there's space on the stack */
- for (argnum = 0, stack_alloc = 0; argnum < nargs; argnum++)
- stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 7) & ~7);
- sp -= stack_alloc; /* make room on stack for args */
-
- /* Now load as many as possible of the first arguments into
- registers, and push the rest onto the stack. There are 64 bytes
- in eight registers available. Loop thru args from first to last. */
-
- int_argreg = tdep->ARG0_REGNUM;
- float_argreg = FP0_REGNUM;
- double_argreg = tdep->DR0_REGNUM;
-
- for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++)
- {
- type = VALUE_TYPE (args[argnum]);
- len = TYPE_LENGTH (type);
- memset (valbuf, 0, sizeof (valbuf));
-
- if (TYPE_CODE (type) != TYPE_CODE_FLT)
- {
- argreg_size = REGISTER_RAW_SIZE (int_argreg);
-
- if (len < argreg_size)
- {
- /* value gets right-justified in the register or stack word */
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- memcpy (valbuf + argreg_size - len,
- (char *) VALUE_CONTENTS (args[argnum]), len);
- else
- memcpy (valbuf, (char *) VALUE_CONTENTS (args[argnum]), len);
-
- val = valbuf;
- }
- else
- val = (char *) VALUE_CONTENTS (args[argnum]);
-
- while (len > 0)
- {
- if (int_argreg > tdep->ARGLAST_REGNUM)
- {
- /* must go on the stack */
- write_memory (sp + stack_offset, val, argreg_size);
- stack_offset += 8;/*argreg_size;*/
- }
- /* NOTE WELL!!!!! This is not an "else if" clause!!!
- That's because some *&^%$ things get passed on the stack
- AND in the registers! */
- if (int_argreg <= tdep->ARGLAST_REGNUM)
- {
- /* there's room in a register */
- regval = extract_unsigned_integer (val, argreg_size);
- write_register (int_argreg, regval);
- }
- /* Store the value 8 bytes at a time. This means that
- things larger than 8 bytes may go partly in registers
- and partly on the stack. FIXME: argreg is incremented
- before we use its size. */
- len -= argreg_size;
- val += argreg_size;
- int_argreg++;
- }
- }
- else
- {
- val = (char *) VALUE_CONTENTS (args[argnum]);
- if (len == 4)
+ if (argreg > ARGLAST_REGNUM || pass_on_stack
+ || argnum > last_reg_arg)
{
- /* Where is it going to be stored? */
- while (fp_args[float_arg_index])
- float_arg_index ++;
-
- /* Now float_argreg points to the register where it
- should be stored. Are we still within the allowed
- register set? */
- if (float_arg_index <= tdep->FLOAT_ARGLAST_REGNUM)
- {
- /* Goes in FR0...FR11 */
- deprecated_write_register_gen (FP0_REGNUM + float_arg_index,
- val);
- fp_args[float_arg_index] = 1;
- /* Skip the corresponding general argument register. */
- int_argreg ++;
- }
- else
- ;
- /* Store it as the integers, 8 bytes at the time, if
- necessary spilling on the stack. */
-
+ /* The remainder of the data goes entirely on the stack,
+ 4-byte aligned. */
+ reg_size = (len + 3) & ~3;
+ write_memory (sp + stack_offset, val, reg_size);
+ stack_offset += reg_size;
}
- else if (len == 8)
- {
- /* Where is it going to be stored? */
- while (fp_args[double_arg_index])
- double_arg_index += 2;
- /* Now double_argreg points to the register
- where it should be stored.
- Are we still within the allowed register set? */
- if (double_arg_index < tdep->FLOAT_ARGLAST_REGNUM)
- {
- /* Goes in DR0...DR10 */
- /* The numbering of the DRi registers is consecutive,
- i.e. includes odd numbers. */
- int double_register_offset = double_arg_index / 2;
- int regnum = tdep->DR0_REGNUM +
- double_register_offset;
-#if 0
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE)
- {
- memset (valbuf_tmp, 0, sizeof (valbuf_tmp));
- DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (regnum,
- type, val,
- valbuf_tmp);
- val = valbuf_tmp;
- }
-#endif
- /* Note: must use write_register_gen here instead
- of regcache_raw_write, because
- regcache_raw_write works only for real
- registers, not pseudo. write_register_gen will
- call the gdbarch function to do register
- writes, and that will properly know how to deal
- with pseudoregs. */
- deprecated_write_register_gen (regnum, val);
- fp_args[double_arg_index] = 1;
- fp_args[double_arg_index + 1] = 1;
- /* Skip the corresponding general argument register. */
- int_argreg ++;
- }
- else
- ;
- /* Store it as the integers, 8 bytes at the time, if
- necessary spilling on the stack. */
- }
+ else if (argreg <= ARGLAST_REGNUM)
+ {
+ /* There's room in a register. */
+ reg_size = register_size (gdbarch, argreg);
+ regval = extract_unsigned_integer (val, reg_size, byte_order);
+ regcache_cooked_write_unsigned (regcache, argreg++, regval);
+ }
+ /* Store the value reg_size bytes at a time. This means that things
+ larger than reg_size bytes may go partly in registers and partly
+ on the stack. */
+ len -= reg_size;
+ val += reg_size;
}
}
- return sp;
-}
-/* Function: push_return_address (pc)
- Set up the return address for the inferior function call.
- Needed for targets where we don't actually execute a JSR/BSR instruction */
+ if (struct_return)
+ {
+ if (sh_is_renesas_calling_convention (func_type))
+ /* If the function uses the Renesas ABI, subtract another 4 bytes from
+ the stack and store the struct return address there. */
+ write_memory_unsigned_integer (sp -= 4, 4, byte_order, struct_addr);
+ else
+ /* Using the gcc ABI, the "struct return pointer" pseudo-argument has
+ its own dedicated register. */
+ regcache_cooked_write_unsigned (regcache,
+ STRUCT_RETURN_REGNUM, struct_addr);
+ }
-static CORE_ADDR
-sh_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
-{
- write_register (gdbarch_tdep (current_gdbarch)->PR_REGNUM,
- CALL_DUMMY_ADDRESS ());
- return sp;
-}
+ /* Store return address. */
+ regcache_cooked_write_unsigned (regcache, PR_REGNUM, bp_addr);
-/* Function: fix_call_dummy
- Poke the callee function's address into the destination part of
- the CALL_DUMMY. The address is actually stored in a data word
- following the actualy CALL_DUMMY instructions, which will load
- it into a register using PC-relative addressing. This function
- expects the CALL_DUMMY to look like this:
-
- mov.w @(2,PC), R8
- jsr @R8
- nop
- trap
- <destination>
- */
-
-#if 0
-void
-sh_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs,
- struct value **args, struct type *type, int gcc_p)
-{
- *(unsigned long *) (dummy + 8) = fun;
+ /* Update stack pointer. */
+ regcache_cooked_write_unsigned (regcache,
+ gdbarch_sp_regnum (gdbarch), sp);
+
+ return sp;
}
-#endif
/* Find a function's return value in the appropriate registers (in
regbuf), and copy it into valbuf. Extract from an array REGBUF
containing the (raw) register state a function return value of type
TYPE, and copy that, in virtual format, into VALBUF. */
static void
-sh_extract_return_value (struct type *type, char *regbuf, char *valbuf)
+sh_extract_return_value_nofpu (struct type *type, struct regcache *regcache,
+ gdb_byte *valbuf)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int len = TYPE_LENGTH (type);
int return_register = R0_REGNUM;
int offset;
-
+
if (len <= 4)
{
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- offset = REGISTER_BYTE (return_register) + 4 - len;
- else
- offset = REGISTER_BYTE (return_register);
- memcpy (valbuf, regbuf + offset, len);
- }
- else if (len <= 8)
- {
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- offset = REGISTER_BYTE (return_register) + 8 - len;
- else
- offset = REGISTER_BYTE (return_register);
- memcpy (valbuf, regbuf + offset, len);
- }
- else
- error ("bad size for return value");
-}
-
-static void
-sh3e_sh4_extract_return_value (struct type *type, char *regbuf, char *valbuf)
-{
- int return_register;
- int offset;
- int len = TYPE_LENGTH (type);
+ ULONGEST c;
- if (TYPE_CODE (type) == TYPE_CODE_FLT)
- return_register = FP0_REGNUM;
- else
- return_register = R0_REGNUM;
-
- if (len == 8 && TYPE_CODE (type) == TYPE_CODE_FLT)
- {
- DOUBLEST val;
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE)
- floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword,
- (char *) regbuf + REGISTER_BYTE (return_register),
- &val);
- else
- floatformat_to_doublest (&floatformat_ieee_double_big,
- (char *) regbuf + REGISTER_BYTE (return_register),
- &val);
- deprecated_store_floating (valbuf, len, val);
- }
- else if (len <= 4)
- {
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- offset = REGISTER_BYTE (return_register) + 4 - len;
- else
- offset = REGISTER_BYTE (return_register);
- memcpy (valbuf, regbuf + offset, len);
+ regcache_cooked_read_unsigned (regcache, R0_REGNUM, &c);
+ store_unsigned_integer (valbuf, len, byte_order, c);
}
- else if (len <= 8)
+ else if (len == 8)
{
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- offset = REGISTER_BYTE (return_register) + 8 - len;
- else
- offset = REGISTER_BYTE (return_register);
- memcpy (valbuf, regbuf + offset, len);
+ int i, regnum = R0_REGNUM;
+ for (i = 0; i < len; i += 4)
+ regcache_raw_read (regcache, regnum++, valbuf + i);
}
else
- error ("bad size for return value");
+ error (_("bad size for return value"));
}
static void
-sh64_extract_return_value (struct type *type, char *regbuf, char *valbuf)
+sh_extract_return_value_fpu (struct type *type, struct regcache *regcache,
+ gdb_byte *valbuf)
{
- int offset;
- int return_register;
- int len = TYPE_LENGTH (type);
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (TYPE_CODE (type) == TYPE_CODE_FLT)
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ if (sh_treat_as_flt_p (type))
{
- if (len == 4)
- {
- /* Return value stored in FP0_REGNUM */
- return_register = FP0_REGNUM;
- offset = REGISTER_BYTE (return_register);
- memcpy (valbuf, (char *) regbuf + offset, len);
- }
- else if (len == 8)
- {
- /* return value stored in DR0_REGNUM */
- DOUBLEST val;
-
- return_register = tdep->DR0_REGNUM;
- offset = REGISTER_BYTE (return_register);
-
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE)
- floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword,
- (char *) regbuf + offset, &val);
- else
- floatformat_to_doublest (&floatformat_ieee_double_big,
- (char *) regbuf + offset, &val);
- deprecated_store_floating (valbuf, len, val);
- }
+ int len = TYPE_LENGTH (type);
+ int i, regnum = gdbarch_fp0_regnum (gdbarch);
+ for (i = 0; i < len; i += 4)
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
+ regcache_raw_read (regcache, regnum++,
+ valbuf + len - 4 - i);
+ else
+ regcache_raw_read (regcache, regnum++, valbuf + i);
}
else
- {
- if (len <= 8)
- {
- /* Result is in register 2. If smaller than 8 bytes, it is padded
- at the most significant end. */
- return_register = tdep->RETURN_REGNUM;
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- offset = REGISTER_BYTE (return_register) +
- REGISTER_RAW_SIZE (return_register) - len;
- else
- offset = REGISTER_BYTE (return_register);
- memcpy (valbuf, (char *) regbuf + offset, len);
- }
- else
- error ("bad size for return value");
- }
+ sh_extract_return_value_nofpu (type, regcache, valbuf);
}
/* Write into appropriate registers a function return value
of type TYPE, given in virtual format.
If the architecture is sh4 or sh3e, store a function's return value
in the R0 general register or in the FP0 floating point register,
- depending on the type of the return value. In all the other cases
- the result is stored in r0, left-justified. */
-static void
-sh_default_store_return_value (struct type *type, char *valbuf)
-{
- char buf[32]; /* more than enough... */
-
- if (TYPE_LENGTH (type) < REGISTER_RAW_SIZE (R0_REGNUM))
- {
- /* Add leading zeros to the value. */
- memset (buf, 0, REGISTER_RAW_SIZE (R0_REGNUM));
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- memcpy (buf + REGISTER_RAW_SIZE (R0_REGNUM) - TYPE_LENGTH (type),
- valbuf, TYPE_LENGTH (type));
- else
- memcpy (buf, valbuf, TYPE_LENGTH (type));
- deprecated_write_register_bytes (REGISTER_BYTE (R0_REGNUM), buf,
- REGISTER_RAW_SIZE (R0_REGNUM));
- }
- else
- deprecated_write_register_bytes (REGISTER_BYTE (R0_REGNUM), valbuf,
- TYPE_LENGTH (type));
-}
-
-static void
-sh3e_sh4_store_return_value (struct type *type, char *valbuf)
-{
- if (TYPE_CODE (type) == TYPE_CODE_FLT)
- deprecated_write_register_bytes (REGISTER_BYTE (FP0_REGNUM),
- valbuf, TYPE_LENGTH (type));
- else
- sh_default_store_return_value (type, valbuf);
-}
-
+ depending on the type of the return value. In all the other cases
+ the result is stored in r0, left-justified. */
static void
-sh64_store_return_value (struct type *type, char *valbuf)
+sh_store_return_value_nofpu (struct type *type, struct regcache *regcache,
+ const gdb_byte *valbuf)
{
- char buf[64]; /* more than enough... */
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ ULONGEST val;
int len = TYPE_LENGTH (type);
- if (TYPE_CODE (type) == TYPE_CODE_FLT)
+ if (len <= 4)
{
- if (len == 4)
- {
- /* Return value stored in FP0_REGNUM */
- deprecated_write_register_gen (FP0_REGNUM, valbuf);
- }
- if (len == 8)
- {
- /* return value stored in DR0_REGNUM */
- /* FIXME: Implement */
- }
+ val = extract_unsigned_integer (valbuf, len, byte_order);
+ regcache_cooked_write_unsigned (regcache, R0_REGNUM, val);
}
else
{
- int return_register = gdbarch_tdep (current_gdbarch)->RETURN_REGNUM;
- int offset = 0;
-
- if (len <= REGISTER_RAW_SIZE (return_register))
- {
- /* Pad with zeros. */
- memset (buf, 0, REGISTER_RAW_SIZE (return_register));
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE)
- offset = 0; /*REGISTER_RAW_SIZE (return_register) - len;*/
- else
- offset = REGISTER_RAW_SIZE (return_register) - len;
-
- memcpy (buf + offset, valbuf, len);
- deprecated_write_register_gen (return_register, buf);
- }
- else
- deprecated_write_register_gen (return_register, valbuf);
+ int i, regnum = R0_REGNUM;
+ for (i = 0; i < len; i += 4)
+ regcache_raw_write (regcache, regnum++, valbuf + i);
}
}
-/* Print the registers in a form similar to the E7000 */
-
-static void
-sh_generic_show_regs (void)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
- paddr (read_register (PC_REGNUM)),
- (long) read_register (tdep->SR_REGNUM),
- (long) read_register (tdep->PR_REGNUM),
- (long) read_register (MACH_REGNUM),
- (long) read_register (MACL_REGNUM));
-
- printf_filtered ("GBR=%08lx VBR=%08lx",
- (long) read_register (GBR_REGNUM),
- (long) read_register (VBR_REGNUM));
-
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
- printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
-}
-
-static void
-sh3_show_regs (void)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
- paddr (read_register (PC_REGNUM)),
- (long) read_register (tdep->SR_REGNUM),
- (long) read_register (tdep->PR_REGNUM),
- (long) read_register (MACH_REGNUM),
- (long) read_register (MACL_REGNUM));
-
- printf_filtered ("GBR=%08lx VBR=%08lx",
- (long) read_register (GBR_REGNUM),
- (long) read_register (VBR_REGNUM));
- printf_filtered (" SSR=%08lx SPC=%08lx",
- (long) read_register (tdep->SSR_REGNUM),
- (long) read_register (tdep->SPC_REGNUM));
-
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
- printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
-}
-
-
-static void
-sh2e_show_regs (void)
-{
- printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
- paddr (read_register (PC_REGNUM)),
- (long) read_register (SR_REGNUM),
- (long) read_register (PR_REGNUM),
- (long) read_register (MACH_REGNUM),
- (long) read_register (MACL_REGNUM));
-
- printf_filtered ("GBR=%08lx VBR=%08lx",
- (long) read_register (GBR_REGNUM),
- (long) read_register (VBR_REGNUM));
- printf_filtered (" FPUL=%08lx FPSCR=%08lx",
- (long) read_register (gdbarch_tdep (current_gdbarch)->FPUL_REGNUM),
- (long) read_register (gdbarch_tdep (current_gdbarch)->FPSCR_REGNUM));
-
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
- printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
-
- printf_filtered (("FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
- (long) read_register (FP0_REGNUM + 0),
- (long) read_register (FP0_REGNUM + 1),
- (long) read_register (FP0_REGNUM + 2),
- (long) read_register (FP0_REGNUM + 3),
- (long) read_register (FP0_REGNUM + 4),
- (long) read_register (FP0_REGNUM + 5),
- (long) read_register (FP0_REGNUM + 6),
- (long) read_register (FP0_REGNUM + 7));
- printf_filtered (("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
- (long) read_register (FP0_REGNUM + 8),
- (long) read_register (FP0_REGNUM + 9),
- (long) read_register (FP0_REGNUM + 10),
- (long) read_register (FP0_REGNUM + 11),
- (long) read_register (FP0_REGNUM + 12),
- (long) read_register (FP0_REGNUM + 13),
- (long) read_register (FP0_REGNUM + 14),
- (long) read_register (FP0_REGNUM + 15));
-}
-
-static void
-sh3e_show_regs (void)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
- paddr (read_register (PC_REGNUM)),
- (long) read_register (tdep->SR_REGNUM),
- (long) read_register (tdep->PR_REGNUM),
- (long) read_register (MACH_REGNUM),
- (long) read_register (MACL_REGNUM));
-
- printf_filtered ("GBR=%08lx VBR=%08lx",
- (long) read_register (GBR_REGNUM),
- (long) read_register (VBR_REGNUM));
- printf_filtered (" SSR=%08lx SPC=%08lx",
- (long) read_register (tdep->SSR_REGNUM),
- (long) read_register (tdep->SPC_REGNUM));
- printf_filtered (" FPUL=%08lx FPSCR=%08lx",
- (long) read_register (tdep->FPUL_REGNUM),
- (long) read_register (tdep->FPSCR_REGNUM));
-
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
- printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
-
- printf_filtered (("FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
- (long) read_register (FP0_REGNUM + 0),
- (long) read_register (FP0_REGNUM + 1),
- (long) read_register (FP0_REGNUM + 2),
- (long) read_register (FP0_REGNUM + 3),
- (long) read_register (FP0_REGNUM + 4),
- (long) read_register (FP0_REGNUM + 5),
- (long) read_register (FP0_REGNUM + 6),
- (long) read_register (FP0_REGNUM + 7));
- printf_filtered (("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
- (long) read_register (FP0_REGNUM + 8),
- (long) read_register (FP0_REGNUM + 9),
- (long) read_register (FP0_REGNUM + 10),
- (long) read_register (FP0_REGNUM + 11),
- (long) read_register (FP0_REGNUM + 12),
- (long) read_register (FP0_REGNUM + 13),
- (long) read_register (FP0_REGNUM + 14),
- (long) read_register (FP0_REGNUM + 15));
-}
-
-static void
-sh3_dsp_show_regs (void)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
- paddr (read_register (PC_REGNUM)),
- (long) read_register (tdep->SR_REGNUM),
- (long) read_register (tdep->PR_REGNUM),
- (long) read_register (MACH_REGNUM),
- (long) read_register (MACL_REGNUM));
-
- printf_filtered ("GBR=%08lx VBR=%08lx",
- (long) read_register (GBR_REGNUM),
- (long) read_register (VBR_REGNUM));
-
- printf_filtered (" SSR=%08lx SPC=%08lx",
- (long) read_register (tdep->SSR_REGNUM),
- (long) read_register (tdep->SPC_REGNUM));
-
- printf_filtered (" DSR=%08lx",
- (long) read_register (tdep->DSR_REGNUM));
-
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
- printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
-
- printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n",
- (long) read_register (tdep->A0G_REGNUM) & 0xff,
- (long) read_register (tdep->A0_REGNUM),
- (long) read_register (tdep->M0_REGNUM),
- (long) read_register (tdep->X0_REGNUM),
- (long) read_register (tdep->Y0_REGNUM),
- (long) read_register (tdep->RS_REGNUM),
- (long) read_register (tdep->MOD_REGNUM));
- printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n",
- (long) read_register (tdep->A1G_REGNUM) & 0xff,
- (long) read_register (tdep->A1_REGNUM),
- (long) read_register (tdep->M1_REGNUM),
- (long) read_register (tdep->X1_REGNUM),
- (long) read_register (tdep->Y1_REGNUM),
- (long) read_register (tdep->RE_REGNUM));
-}
-
-static void
-sh4_show_regs (void)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- int pr = read_register (tdep->FPSCR_REGNUM) & 0x80000;
- printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
- paddr (read_register (PC_REGNUM)),
- (long) read_register (tdep->SR_REGNUM),
- (long) read_register (tdep->PR_REGNUM),
- (long) read_register (MACH_REGNUM),
- (long) read_register (MACL_REGNUM));
-
- printf_filtered ("GBR=%08lx VBR=%08lx",
- (long) read_register (GBR_REGNUM),
- (long) read_register (VBR_REGNUM));
- printf_filtered (" SSR=%08lx SPC=%08lx",
- (long) read_register (tdep->SSR_REGNUM),
- (long) read_register (tdep->SPC_REGNUM));
- printf_filtered (" FPUL=%08lx FPSCR=%08lx",
- (long) read_register (tdep->FPUL_REGNUM),
- (long) read_register (tdep->FPSCR_REGNUM));
-
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
- printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
-
- printf_filtered ((pr
- ? "DR0-DR6 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n"
- : "FP0-FP7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
- (long) read_register (FP0_REGNUM + 0),
- (long) read_register (FP0_REGNUM + 1),
- (long) read_register (FP0_REGNUM + 2),
- (long) read_register (FP0_REGNUM + 3),
- (long) read_register (FP0_REGNUM + 4),
- (long) read_register (FP0_REGNUM + 5),
- (long) read_register (FP0_REGNUM + 6),
- (long) read_register (FP0_REGNUM + 7));
- printf_filtered ((pr
- ? "DR8-DR14 %08lx%08lx %08lx%08lx %08lx%08lx %08lx%08lx\n"
- : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
- (long) read_register (FP0_REGNUM + 8),
- (long) read_register (FP0_REGNUM + 9),
- (long) read_register (FP0_REGNUM + 10),
- (long) read_register (FP0_REGNUM + 11),
- (long) read_register (FP0_REGNUM + 12),
- (long) read_register (FP0_REGNUM + 13),
- (long) read_register (FP0_REGNUM + 14),
- (long) read_register (FP0_REGNUM + 15));
-}
-
-static void
-sh_dsp_show_regs (void)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- printf_filtered ("PC=%s SR=%08lx PR=%08lx MACH=%08lx MACHL=%08lx\n",
- paddr (read_register (PC_REGNUM)),
- (long) read_register (tdep->SR_REGNUM),
- (long) read_register (tdep->PR_REGNUM),
- (long) read_register (MACH_REGNUM),
- (long) read_register (MACL_REGNUM));
-
- printf_filtered ("GBR=%08lx VBR=%08lx",
- (long) read_register (GBR_REGNUM),
- (long) read_register (VBR_REGNUM));
-
- printf_filtered (" DSR=%08lx",
- (long) read_register (tdep->DSR_REGNUM));
-
- printf_filtered ("\nR0-R7 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (0),
- (long) read_register (1),
- (long) read_register (2),
- (long) read_register (3),
- (long) read_register (4),
- (long) read_register (5),
- (long) read_register (6),
- (long) read_register (7));
- printf_filtered ("R8-R15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- (long) read_register (8),
- (long) read_register (9),
- (long) read_register (10),
- (long) read_register (11),
- (long) read_register (12),
- (long) read_register (13),
- (long) read_register (14),
- (long) read_register (15));
-
- printf_filtered ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n",
- (long) read_register (tdep->A0G_REGNUM) & 0xff,
- (long) read_register (tdep->A0_REGNUM),
- (long) read_register (tdep->M0_REGNUM),
- (long) read_register (tdep->X0_REGNUM),
- (long) read_register (tdep->Y0_REGNUM),
- (long) read_register (tdep->RS_REGNUM),
- (long) read_register (tdep->MOD_REGNUM));
- printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n",
- (long) read_register (tdep->A1G_REGNUM) & 0xff,
- (long) read_register (tdep->A1_REGNUM),
- (long) read_register (tdep->M1_REGNUM),
- (long) read_register (tdep->X1_REGNUM),
- (long) read_register (tdep->Y1_REGNUM),
- (long) read_register (tdep->RE_REGNUM));
-}
-
-static void
-sh64_show_media_regs (void)
-{
- int i;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- printf_filtered ("PC=%s SR=%016llx \n",
- paddr (read_register (PC_REGNUM)),
- (long long) read_register (tdep->SR_REGNUM));
-
- printf_filtered ("SSR=%016llx SPC=%016llx \n",
- (long long) read_register (tdep->SSR_REGNUM),
- (long long) read_register (tdep->SPC_REGNUM));
- printf_filtered ("FPSCR=%016lx\n ",
- (long) read_register (tdep->FPSCR_REGNUM));
-
- for (i = 0; i < 64; i = i + 4)
- printf_filtered ("\nR%d-R%d %016llx %016llx %016llx %016llx\n",
- i, i + 3,
- (long long) read_register (i + 0),
- (long long) read_register (i + 1),
- (long long) read_register (i + 2),
- (long long) read_register (i + 3));
-
- printf_filtered ("\n");
-
- for (i = 0; i < 64; i = i + 8)
- printf_filtered ("FR%d-FR%d %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- i, i + 7,
- (long) read_register (FP0_REGNUM + i + 0),
- (long) read_register (FP0_REGNUM + i + 1),
- (long) read_register (FP0_REGNUM + i + 2),
- (long) read_register (FP0_REGNUM + i + 3),
- (long) read_register (FP0_REGNUM + i + 4),
- (long) read_register (FP0_REGNUM + i + 5),
- (long) read_register (FP0_REGNUM + i + 6),
- (long) read_register (FP0_REGNUM + i + 7));
-}
-
-static void
-sh64_show_compact_regs (void)
-{
- int i;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- printf_filtered ("PC=%s \n",
- paddr (read_register (tdep->PC_C_REGNUM)));
-
- printf_filtered ("GBR=%08lx MACH=%08lx MACL=%08lx PR=%08lx T=%08lx\n",
- (long) read_register (tdep->GBR_C_REGNUM),
- (long) read_register (tdep->MACH_C_REGNUM),
- (long) read_register (tdep->MACL_C_REGNUM),
- (long) read_register (tdep->PR_C_REGNUM),
- (long) read_register (tdep->T_C_REGNUM));
- printf_filtered ("FPSCR=%08lx FPUL=%08lx\n",
- (long) read_register (tdep->FPSCR_REGNUM),
- (long) read_register (tdep->FPUL_REGNUM));
-
- for (i = 0; i < 16; i = i + 4)
- printf_filtered ("\nR%d-R%d %08lx %08lx %08lx %08lx\n",
- i, i + 3,
- (long) read_register (i + 0),
- (long) read_register (i + 1),
- (long) read_register (i + 2),
- (long) read_register (i + 3));
-
- printf_filtered ("\n");
-
- for (i = 0; i < 16; i = i + 8)
- printf_filtered ("FR%d-FR%d %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- i, i + 7,
- (long) read_register (FP0_REGNUM + i + 0),
- (long) read_register (FP0_REGNUM + i + 1),
- (long) read_register (FP0_REGNUM + i + 2),
- (long) read_register (FP0_REGNUM + i + 3),
- (long) read_register (FP0_REGNUM + i + 4),
- (long) read_register (FP0_REGNUM + i + 5),
- (long) read_register (FP0_REGNUM + i + 6),
- (long) read_register (FP0_REGNUM + i + 7));
-}
-
-/*FIXME!!! This only shows the registers for shmedia, excluding the
- pseudo registers. */
-static void
-sh64_show_regs (void)
-{
- if (pc_is_isa32 (get_frame_pc (deprecated_selected_frame)))
- sh64_show_media_regs ();
- else
- sh64_show_compact_regs ();
-}
-
static void
-sh_show_regs_command (char *args, int from_tty)
-{
- if (sh_show_regs)
- (*sh_show_regs)();
-}
-
-/* Index within `registers' of the first byte of the space for
- register N. */
-static int
-sh_default_register_byte (int reg_nr)
-{
- return (reg_nr * 4);
-}
-
-static int
-sh_sh4_register_byte (int reg_nr)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
- return (dr_reg_base_num (reg_nr) * 4);
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- return (fv_reg_base_num (reg_nr) * 4);
- else
- return (reg_nr * 4);
-}
-
-/* *INDENT-OFF* */
-/*
- SH MEDIA MODE (ISA 32)
- general registers (64-bit) 0-63
-0 r0, r1, r2, r3, r4, r5, r6, r7,
-64 r8, r9, r10, r11, r12, r13, r14, r15,
-128 r16, r17, r18, r19, r20, r21, r22, r23,
-192 r24, r25, r26, r27, r28, r29, r30, r31,
-256 r32, r33, r34, r35, r36, r37, r38, r39,
-320 r40, r41, r42, r43, r44, r45, r46, r47,
-384 r48, r49, r50, r51, r52, r53, r54, r55,
-448 r56, r57, r58, r59, r60, r61, r62, r63,
-
- pc (64-bit) 64
-512 pc,
-
- status reg., saved status reg., saved pc reg. (64-bit) 65-67
-520 sr, ssr, spc,
-
- target registers (64-bit) 68-75
-544 tr0, tr1, tr2, tr3, tr4, tr5, tr6, tr7,
-
- floating point state control register (32-bit) 76
-608 fpscr,
-
- single precision floating point registers (32-bit) 77-140
-612 fr0, fr1, fr2, fr3, fr4, fr5, fr6, fr7,
-644 fr8, fr9, fr10, fr11, fr12, fr13, fr14, fr15,
-676 fr16, fr17, fr18, fr19, fr20, fr21, fr22, fr23,
-708 fr24, fr25, fr26, fr27, fr28, fr29, fr30, fr31,
-740 fr32, fr33, fr34, fr35, fr36, fr37, fr38, fr39,
-772 fr40, fr41, fr42, fr43, fr44, fr45, fr46, fr47,
-804 fr48, fr49, fr50, fr51, fr52, fr53, fr54, fr55,
-836 fr56, fr57, fr58, fr59, fr60, fr61, fr62, fr63,
-
-TOTAL SPACE FOR REGISTERS: 868 bytes
-
-From here on they are all pseudo registers: no memory allocated.
-REGISTER_BYTE returns the register byte for the base register.
-
- double precision registers (pseudo) 141-172
- dr0, dr2, dr4, dr6, dr8, dr10, dr12, dr14,
- dr16, dr18, dr20, dr22, dr24, dr26, dr28, dr30,
- dr32, dr34, dr36, dr38, dr40, dr42, dr44, dr46,
- dr48, dr50, dr52, dr54, dr56, dr58, dr60, dr62,
-
- floating point pairs (pseudo) 173-204
- fp0, fp2, fp4, fp6, fp8, fp10, fp12, fp14,
- fp16, fp18, fp20, fp22, fp24, fp26, fp28, fp30,
- fp32, fp34, fp36, fp38, fp40, fp42, fp44, fp46,
- fp48, fp50, fp52, fp54, fp56, fp58, fp60, fp62,
-
- floating point vectors (4 floating point regs) (pseudo) 205-220
- fv0, fv4, fv8, fv12, fv16, fv20, fv24, fv28,
- fv32, fv36, fv40, fv44, fv48, fv52, fv56, fv60,
-
- SH COMPACT MODE (ISA 16) (all pseudo) 221-272
- r0_c, r1_c, r2_c, r3_c, r4_c, r5_c, r6_c, r7_c,
- r8_c, r9_c, r10_c, r11_c, r12_c, r13_c, r14_c, r15_c,
- pc_c,
- gbr_c, mach_c, macl_c, pr_c, t_c,
- fpscr_c, fpul_c,
- fr0_c, fr1_c, fr2_c, fr3_c, fr4_c, fr5_c, fr6_c, fr7_c,
- fr8_c, fr9_c, fr10_c, fr11_c, fr12_c, fr13_c, fr14_c, fr15_c
- dr0_c, dr2_c, dr4_c, dr6_c, dr8_c, dr10_c, dr12_c, dr14_c
- fv0_c, fv4_c, fv8_c, fv12_c
-*/
-/* *INDENT-ON* */
-static int
-sh_sh64_register_byte (int reg_nr)
+sh_store_return_value_fpu (struct type *type, struct regcache *regcache,
+ const gdb_byte *valbuf)
{
- int base_regnum = -1;
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- /* If it is a pseudo register, get the number of the first floating
- point register that is part of it. */
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
- base_regnum = dr_reg_base_num (reg_nr);
-
- else if (reg_nr >= tdep->FPP0_REGNUM
- && reg_nr <= tdep->FPP_LAST_REGNUM)
- base_regnum = fpp_reg_base_num (reg_nr);
-
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- base_regnum = fv_reg_base_num (reg_nr);
-
- /* sh compact pseudo register. FPSCR is a pathological case, need to
- treat it as special. */
- else if ((reg_nr >= tdep->R0_C_REGNUM
- && reg_nr <= tdep->FV_LAST_C_REGNUM)
- && reg_nr != tdep->FPSCR_C_REGNUM)
- base_regnum = sh64_compact_reg_base_num (reg_nr);
-
- /* Now return the offset in bytes within the register cache. */
- /* sh media pseudo register, i.e. any of DR, FFP, FV registers. */
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- return (base_regnum - FP0_REGNUM + 1) * 4
- + (tdep->TR7_REGNUM + 1) * 8;
-
- /* sh compact pseudo register: general register */
- if ((reg_nr >= tdep->R0_C_REGNUM
- && reg_nr <= tdep->R_LAST_C_REGNUM))
- return (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
- ? base_regnum * 8 + 4
- : base_regnum * 8);
-
- /* sh compact pseudo register: */
- if (reg_nr == tdep->PC_C_REGNUM
- || reg_nr == tdep->GBR_C_REGNUM
- || reg_nr == tdep->MACL_C_REGNUM
- || reg_nr == tdep->PR_C_REGNUM)
- return (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
- ? base_regnum * 8 + 4
- : base_regnum * 8);
-
- if (reg_nr == tdep->MACH_C_REGNUM)
- return base_regnum * 8;
-
- if (reg_nr == tdep->T_C_REGNUM)
- return base_regnum * 8; /* FIXME??? how do we get bit 0? Do we have to? */
-
- /* sh compact pseudo register: floating point register */
- else if (reg_nr >=tdep->FP0_C_REGNUM
- && reg_nr <= tdep->FV_LAST_C_REGNUM)
- return (base_regnum - FP0_REGNUM) * 4
- + (tdep->TR7_REGNUM + 1) * 8 + 4;
-
- else if (reg_nr == tdep->FPSCR_C_REGNUM)
- /* This is complicated, for now return the beginning of the
- architectural FPSCR register. */
- return (tdep->TR7_REGNUM + 1) * 8;
-
- else if (reg_nr == tdep->FPUL_C_REGNUM)
- return ((base_regnum - FP0_REGNUM) * 4 +
- (tdep->TR7_REGNUM + 1) * 8 + 4);
-
- /* It is not a pseudo register. */
- /* It is a 64 bit register. */
- else if (reg_nr <= tdep->TR7_REGNUM)
- return reg_nr * 8;
-
- /* It is a 32 bit register. */
- else
- if (reg_nr == tdep->FPSCR_REGNUM)
- return (tdep->FPSCR_REGNUM * 8);
-
- /* It is floating point 32-bit register */
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ if (sh_treat_as_flt_p (type))
+ {
+ int len = TYPE_LENGTH (type);
+ int i, regnum = gdbarch_fp0_regnum (gdbarch);
+ for (i = 0; i < len; i += 4)
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
+ regcache_raw_write (regcache, regnum++,
+ valbuf + len - 4 - i);
+ else
+ regcache_raw_write (regcache, regnum++, valbuf + i);
+ }
else
- return ((tdep->TR7_REGNUM + 1) * 8
- + (reg_nr - FP0_REGNUM + 1) * 4);
+ sh_store_return_value_nofpu (type, regcache, valbuf);
}
-/* Number of bytes of storage in the actual machine representation for
- register REG_NR. */
-static int
-sh_default_register_raw_size (int reg_nr)
+static enum return_value_convention
+sh_return_value_nofpu (struct gdbarch *gdbarch, struct value *function,
+ struct type *type, struct regcache *regcache,
+ gdb_byte *readbuf, const gdb_byte *writebuf)
{
- return 4;
-}
+ struct type *func_type = function ? value_type (function) : NULL;
-static int
-sh_sh4_register_raw_size (int reg_nr)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
- return 8;
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- return 16;
- else
- return 4;
+ if (sh_use_struct_convention_nofpu (
+ sh_is_renesas_calling_convention (func_type), type))
+ return RETURN_VALUE_STRUCT_CONVENTION;
+ if (writebuf)
+ sh_store_return_value_nofpu (type, regcache, writebuf);
+ else if (readbuf)
+ sh_extract_return_value_nofpu (type, regcache, readbuf);
+ return RETURN_VALUE_REGISTER_CONVENTION;
}
-static int
-sh_sh64_register_raw_size (int reg_nr)
+static enum return_value_convention
+sh_return_value_fpu (struct gdbarch *gdbarch, struct value *function,
+ struct type *type, struct regcache *regcache,
+ gdb_byte *readbuf, const gdb_byte *writebuf)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if ((reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
- || (reg_nr >= tdep->FPP0_REGNUM
- && reg_nr <= tdep->FPP_LAST_REGNUM)
- || (reg_nr >= tdep->DR0_C_REGNUM
- && reg_nr <= tdep->DR_LAST_C_REGNUM)
- || (reg_nr <= tdep->TR7_REGNUM))
- return 8;
-
- else if ((reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- || (reg_nr >= tdep->FV0_C_REGNUM
- && reg_nr <= tdep->FV_LAST_C_REGNUM))
- return 16;
-
- else /* this covers also the 32-bit SH compact registers. */
- return 4;
-}
+ struct type *func_type = function ? value_type (function) : NULL;
-/* Number of bytes of storage in the program's representation
- for register N. */
-static int
-sh_register_virtual_size (int reg_nr)
-{
- return 4;
+ if (sh_use_struct_convention (
+ sh_is_renesas_calling_convention (func_type), type))
+ return RETURN_VALUE_STRUCT_CONVENTION;
+ if (writebuf)
+ sh_store_return_value_fpu (type, regcache, writebuf);
+ else if (readbuf)
+ sh_extract_return_value_fpu (type, regcache, readbuf);
+ return RETURN_VALUE_REGISTER_CONVENTION;
}
-/* ??????? FIXME */
-static int
-sh_sh64_register_virtual_size (int reg_nr)
+static struct type *
+sh_sh2a_register_type (struct gdbarch *gdbarch, int reg_nr)
{
- if (reg_nr >= FP0_REGNUM
- && reg_nr <= gdbarch_tdep (current_gdbarch)->FP_LAST_REGNUM)
- return 4;
+ if ((reg_nr >= gdbarch_fp0_regnum (gdbarch)
+ && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM))
+ return builtin_type (gdbarch)->builtin_float;
+ else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
+ return builtin_type (gdbarch)->builtin_double;
else
- return 8;
+ return builtin_type (gdbarch)->builtin_int;
}
/* Return the GDB type object for the "standard" data type
of data in register N. */
static struct type *
-sh_sh3e_register_virtual_type (int reg_nr)
+sh_sh3e_register_type (struct gdbarch *gdbarch, int reg_nr)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if ((reg_nr >= FP0_REGNUM
- && (reg_nr <= tdep->FP_LAST_REGNUM))
- || (reg_nr == tdep->FPUL_REGNUM))
- return builtin_type_float;
+ if ((reg_nr >= gdbarch_fp0_regnum (gdbarch)
+ && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM))
+ return builtin_type (gdbarch)->builtin_float;
else
- return builtin_type_int;
+ return builtin_type (gdbarch)->builtin_int;
}
static struct type *
-sh_sh4_build_float_register_type (int high)
+sh_sh4_build_float_register_type (struct gdbarch *gdbarch, int high)
{
- struct type *temp;
-
- temp = create_range_type (NULL, builtin_type_int, 0, high);
- return create_array_type (NULL, builtin_type_float, temp);
+ return lookup_array_range_type (builtin_type (gdbarch)->builtin_float,
+ 0, high);
}
static struct type *
-sh_sh4_register_virtual_type (int reg_nr)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if ((reg_nr >= FP0_REGNUM
- && (reg_nr <= tdep->FP_LAST_REGNUM))
- || (reg_nr == tdep->FPUL_REGNUM))
- return builtin_type_float;
- else if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
- return builtin_type_double;
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- return sh_sh4_build_float_register_type (3);
+sh_sh4_register_type (struct gdbarch *gdbarch, int reg_nr)
+{
+ if ((reg_nr >= gdbarch_fp0_regnum (gdbarch)
+ && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM))
+ return builtin_type (gdbarch)->builtin_float;
+ else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
+ return builtin_type (gdbarch)->builtin_double;
+ else if (reg_nr >= FV0_REGNUM && reg_nr <= FV_LAST_REGNUM)
+ return sh_sh4_build_float_register_type (gdbarch, 3);
else
- return builtin_type_int;
+ return builtin_type (gdbarch)->builtin_int;
}
static struct type *
-sh_sh64_register_virtual_type (int reg_nr)
+sh_default_register_type (struct gdbarch *gdbarch, int reg_nr)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if ((reg_nr >= FP0_REGNUM
- && reg_nr <= tdep->FP_LAST_REGNUM)
- || (reg_nr >= tdep->FP0_C_REGNUM
- && reg_nr <= tdep->FP_LAST_C_REGNUM))
- return builtin_type_float;
- else if ((reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
- || (reg_nr >= tdep->DR0_C_REGNUM
- && reg_nr <= tdep->DR_LAST_C_REGNUM))
- return builtin_type_double;
- else if (reg_nr >= tdep->FPP0_REGNUM
- && reg_nr <= tdep->FPP_LAST_REGNUM)
- return sh_sh4_build_float_register_type (1);
- else if ((reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- ||(reg_nr >= tdep->FV0_C_REGNUM
- && reg_nr <= tdep->FV_LAST_C_REGNUM))
- return sh_sh4_build_float_register_type (3);
- else if (reg_nr == tdep->FPSCR_REGNUM)
- return builtin_type_int;
- else if (reg_nr >= tdep->R0_C_REGNUM
- && reg_nr < tdep->FP0_C_REGNUM)
- return builtin_type_int;
- else
- return builtin_type_long_long;
+ return builtin_type (gdbarch)->builtin_int;
}
-static struct type *
-sh_default_register_virtual_type (int reg_nr)
+/* Is a register in a reggroup?
+ The default code in reggroup.c doesn't identify system registers, some
+ float registers or any of the vector registers.
+ TODO: sh2a and dsp registers. */
+static int
+sh_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
+ struct reggroup *reggroup)
{
- return builtin_type_int;
+ if (gdbarch_register_name (gdbarch, regnum) == NULL
+ || *gdbarch_register_name (gdbarch, regnum) == '\0')
+ return 0;
+
+ if (reggroup == float_reggroup
+ && (regnum == FPUL_REGNUM
+ || regnum == FPSCR_REGNUM))
+ return 1;
+
+ if (regnum >= FV0_REGNUM && regnum <= FV_LAST_REGNUM)
+ {
+ if (reggroup == vector_reggroup || reggroup == float_reggroup)
+ return 1;
+ if (reggroup == general_reggroup)
+ return 0;
+ }
+
+ if (regnum == VBR_REGNUM
+ || regnum == SR_REGNUM
+ || regnum == FPSCR_REGNUM
+ || regnum == SSR_REGNUM
+ || regnum == SPC_REGNUM)
+ {
+ if (reggroup == system_reggroup)
+ return 1;
+ if (reggroup == general_reggroup)
+ return 0;
+ }
+
+ /* The default code can cope with any other registers. */
+ return default_register_reggroup_p (gdbarch, regnum, reggroup);
}
/* On the sh4, the DRi pseudo registers are problematic if the target
- is little endian. When the user writes one of those registers, for
- instance with 'ser var $dr0=1', we want the double to be stored
+ is little endian. When the user writes one of those registers, for
+ instance with 'set var $dr0=1', we want the double to be stored
like this:
- fr0 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f
- fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00
+ fr0 = 0x00 0x00 0xf0 0x3f
+ fr1 = 0x00 0x00 0x00 0x00
This corresponds to little endian byte order & big endian word
order. However if we let gdb write the register w/o conversion, it
will write fr0 and fr1 this way:
- fr0 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00
- fr1 = 0x00 0x00 0x00 0x00 0x00 0xf0 0x3f
+ fr0 = 0x00 0x00 0x00 0x00
+ fr1 = 0x00 0x00 0xf0 0x3f
because it will consider fr0 and fr1 as a single LE stretch of memory.
To achieve what we want we must force gdb to store things in
In case the target is big endian, there is no problem, the
raw bytes will look like:
- fr0 = 0x3f 0xf0 0x00 0x00 0x00 0x00 0x00
- fr1 = 0x00 0x00 0x00 0x00 0x00 0x00 0x00
+ fr0 = 0x3f 0xf0 0x00 0x00
+ fr1 = 0x00 0x00 0x00 0x00
The other pseudo registers (the FVs) also don't pose a problem
- because they are stored as 4 individual FP elements. */
+ because they are stored as 4 individual FP elements. */
static void
-sh_sh4_register_convert_to_virtual (int regnum, struct type *type,
- char *from, char *to)
+sh_register_convert_to_virtual (struct gdbarch *gdbarch, int regnum,
+ struct type *type, gdb_byte *from, gdb_byte *to)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_LITTLE)
+ {
+ /* It is a no-op. */
+ memcpy (to, from, register_size (gdbarch, regnum));
+ return;
+ }
- if (regnum >= tdep->DR0_REGNUM
- && regnum <= tdep->DR_LAST_REGNUM)
+ if (regnum >= DR0_REGNUM && regnum <= DR_LAST_REGNUM)
{
DOUBLEST val;
- floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, from, &val);
- deprecated_store_floating (to, TYPE_LENGTH (type), val);
+ floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword,
+ from, &val);
+ store_typed_floating (to, type, val);
}
else
- error ("sh_register_convert_to_virtual called with non DR register number");
+ error
+ ("sh_register_convert_to_virtual called with non DR register number");
}
static void
-sh_sh64_register_convert_to_virtual (int regnum, struct type *type,
- char *from, char *to)
+sh_register_convert_to_raw (struct gdbarch *gdbarch, struct type *type,
+ int regnum, const gdb_byte *from, gdb_byte *to)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (TARGET_BYTE_ORDER != BFD_ENDIAN_LITTLE)
+ if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_LITTLE)
{
- /* It is a no-op. */
- memcpy (to, from, REGISTER_RAW_SIZE (regnum));
+ /* It is a no-op. */
+ memcpy (to, from, register_size (gdbarch, regnum));
return;
}
- if ((regnum >= tdep->DR0_REGNUM
- && regnum <= tdep->DR_LAST_REGNUM)
- || (regnum >= tdep->DR0_C_REGNUM
- && regnum <= tdep->DR_LAST_C_REGNUM))
+ if (regnum >= DR0_REGNUM && regnum <= DR_LAST_REGNUM)
{
- DOUBLEST val;
- floatformat_to_doublest (&floatformat_ieee_double_littlebyte_bigword, from, &val);
- deprecated_store_floating(to, TYPE_LENGTH(type), val);
+ DOUBLEST val = extract_typed_floating (from, type);
+ floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword,
+ &val, to);
}
else
- error("sh_register_convert_to_virtual called with non DR register number");
+ error (_("sh_register_convert_to_raw called with non DR register number"));
}
-static void
-sh_sh4_register_convert_to_raw (struct type *type, int regnum,
- const void *from, void *to)
+/* For vectors of 4 floating point registers. */
+static int
+fv_reg_base_num (struct gdbarch *gdbarch, int fv_regnum)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ int fp_regnum;
- if (regnum >= tdep->DR0_REGNUM
- && regnum <= tdep->DR_LAST_REGNUM)
- {
- DOUBLEST val = deprecated_extract_floating (from, TYPE_LENGTH(type));
- floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword, &val, to);
- }
- else
- error("sh_register_convert_to_raw called with non DR register number");
+ fp_regnum = gdbarch_fp0_regnum (gdbarch)
+ + (fv_regnum - FV0_REGNUM) * 4;
+ return fp_regnum;
}
-static void
-sh_sh64_register_convert_to_raw (struct type *type, int regnum,
- const void *from, void *to)
+/* For double precision floating point registers, i.e 2 fp regs. */
+static int
+dr_reg_base_num (struct gdbarch *gdbarch, int dr_regnum)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (TARGET_BYTE_ORDER != BFD_ENDIAN_LITTLE)
- {
- /* It is a no-op. */
- memcpy (to, from, REGISTER_RAW_SIZE (regnum));
- return;
- }
+ int fp_regnum;
- if ((regnum >= tdep->DR0_REGNUM
- && regnum <= tdep->DR_LAST_REGNUM)
- || (regnum >= tdep->DR0_C_REGNUM
- && regnum <= tdep->DR_LAST_C_REGNUM))
- {
- DOUBLEST val = deprecated_extract_floating (from, TYPE_LENGTH(type));
- floatformat_from_doublest (&floatformat_ieee_double_littlebyte_bigword, &val, to);
- }
- else
- error("sh_register_convert_to_raw called with non DR register number");
+ fp_regnum = gdbarch_fp0_regnum (gdbarch)
+ + (dr_regnum - DR0_REGNUM) * 2;
+ return fp_regnum;
}
-static void
-sh_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
- int reg_nr, void *buffer)
+/* Concatenate PORTIONS contiguous raw registers starting at
+ BASE_REGNUM into BUFFER. */
+
+static enum register_status
+pseudo_register_read_portions (struct gdbarch *gdbarch,
+ struct regcache *regcache,
+ int portions,
+ int base_regnum, gdb_byte *buffer)
{
- int base_regnum, portion;
- char temp_buffer[MAX_REGISTER_SIZE];
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ int portion;
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
+ for (portion = 0; portion < portions; portion++)
{
- base_regnum = dr_reg_base_num (reg_nr);
+ enum register_status status;
+ gdb_byte *b;
- /* Build the value in the provided buffer. */
- /* Read the real regs for which this one is an alias. */
- for (portion = 0; portion < 2; portion++)
- regcache_raw_read (regcache, base_regnum + portion,
- (temp_buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
- /* We must pay attention to the endiannes. */
- sh_sh4_register_convert_to_virtual (reg_nr,
- REGISTER_VIRTUAL_TYPE (reg_nr),
- temp_buffer, buffer);
+ b = buffer + register_size (gdbarch, base_regnum) * portion;
+ status = regcache_raw_read (regcache, base_regnum + portion, b);
+ if (status != REG_VALID)
+ return status;
}
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- {
- base_regnum = fv_reg_base_num (reg_nr);
- /* Read the real regs for which this one is an alias. */
- for (portion = 0; portion < 4; portion++)
- regcache_raw_read (regcache, base_regnum + portion,
- ((char *) buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
- }
+ return REG_VALID;
}
-static void
-sh64_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
- int reg_nr, void *buffer)
+static enum register_status
+sh_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
+ int reg_nr, gdb_byte *buffer)
{
int base_regnum;
- int portion;
- int offset = 0;
- char temp_buffer[MAX_REGISTER_SIZE];
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
- {
- base_regnum = dr_reg_base_num (reg_nr);
-
- /* Build the value in the provided buffer. */
- /* DR regs are double precision registers obtained by
- concatenating 2 single precision floating point registers. */
- for (portion = 0; portion < 2; portion++)
- regcache_raw_read (regcache, base_regnum + portion,
- (temp_buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
-
- /* We must pay attention to the endiannes. */
- sh_sh64_register_convert_to_virtual (reg_nr, REGISTER_VIRTUAL_TYPE (reg_nr),
- temp_buffer, buffer);
-
- }
-
- else if (reg_nr >= tdep->FPP0_REGNUM
- && reg_nr <= tdep->FPP_LAST_REGNUM)
- {
- base_regnum = fpp_reg_base_num (reg_nr);
-
- /* Build the value in the provided buffer. */
- /* FPP regs are pairs of single precision registers obtained by
- concatenating 2 single precision floating point registers. */
- for (portion = 0; portion < 2; portion++)
- regcache_raw_read (regcache, base_regnum + portion,
- ((char *) buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
- }
-
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- {
- base_regnum = fv_reg_base_num (reg_nr);
-
- /* Build the value in the provided buffer. */
- /* FV regs are vectors of single precision registers obtained by
- concatenating 4 single precision floating point registers. */
- for (portion = 0; portion < 4; portion++)
- regcache_raw_read (regcache, base_regnum + portion,
- ((char *) buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
- }
-
- /* sh compact pseudo registers. 1-to-1 with a shmedia register */
- else if (reg_nr >= tdep->R0_C_REGNUM
- && reg_nr <= tdep->T_C_REGNUM)
- {
- base_regnum = sh64_compact_reg_base_num (reg_nr);
-
- /* Build the value in the provided buffer. */
- regcache_raw_read (regcache, base_regnum, temp_buffer);
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- offset = 4;
- memcpy (buffer, temp_buffer + offset, 4); /* get LOWER 32 bits only????*/
- }
-
- else if (reg_nr >= tdep->FP0_C_REGNUM
- && reg_nr <= tdep->FP_LAST_C_REGNUM)
- {
- base_regnum = sh64_compact_reg_base_num (reg_nr);
-
- /* Build the value in the provided buffer. */
- /* Floating point registers map 1-1 to the media fp regs,
- they have the same size and endienness. */
- regcache_raw_read (regcache, base_regnum, buffer);
- }
-
- else if (reg_nr >= tdep->DR0_C_REGNUM
- && reg_nr <= tdep->DR_LAST_C_REGNUM)
- {
- base_regnum = sh64_compact_reg_base_num (reg_nr);
-
- /* DR_C regs are double precision registers obtained by
- concatenating 2 single precision floating point registers. */
- for (portion = 0; portion < 2; portion++)
- regcache_raw_read (regcache, base_regnum + portion,
- (temp_buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
-
- /* We must pay attention to the endiannes. */
- sh_sh64_register_convert_to_virtual (reg_nr, REGISTER_VIRTUAL_TYPE (reg_nr),
- temp_buffer, buffer);
- }
+ gdb_byte temp_buffer[MAX_REGISTER_SIZE];
+ enum register_status status;
- else if (reg_nr >= tdep->FV0_C_REGNUM
- && reg_nr <= tdep->FV_LAST_C_REGNUM)
+ if (reg_nr == PSEUDO_BANK_REGNUM)
+ return regcache_raw_read (regcache, BANK_REGNUM, buffer);
+ else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
{
- base_regnum = sh64_compact_reg_base_num (reg_nr);
-
- /* Build the value in the provided buffer. */
- /* FV_C regs are vectors of single precision registers obtained by
- concatenating 4 single precision floating point registers. */
- for (portion = 0; portion < 4; portion++)
- regcache_raw_read (regcache, base_regnum + portion,
- ((char *) buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
- }
+ base_regnum = dr_reg_base_num (gdbarch, reg_nr);
- else if (reg_nr == tdep->FPSCR_C_REGNUM)
- {
- int fpscr_base_regnum;
- int sr_base_regnum;
- unsigned int fpscr_value;
- unsigned int sr_value;
- unsigned int fpscr_c_value;
- unsigned int fpscr_c_part1_value;
- unsigned int fpscr_c_part2_value;
-
- fpscr_base_regnum = tdep->FPSCR_REGNUM;
- sr_base_regnum = tdep->SR_REGNUM;
-
- /* Build the value in the provided buffer. */
- /* FPSCR_C is a very weird register that contains sparse bits
- from the FPSCR and the SR architectural registers.
- Specifically: */
- /* *INDENT-OFF* */
- /*
- FPSRC_C bit
- 0 Bit 0 of FPSCR
- 1 reserved
- 2-17 Bit 2-18 of FPSCR
- 18-20 Bits 12,13,14 of SR
- 21-31 reserved
- */
- /* *INDENT-ON* */
- /* Get FPSCR into a local buffer */
- regcache_raw_read (regcache, fpscr_base_regnum, temp_buffer);
- /* Get value as an int. */
- fpscr_value = extract_unsigned_integer (temp_buffer, 4);
- /* Get SR into a local buffer */
- regcache_raw_read (regcache, sr_base_regnum, temp_buffer);
- /* Get value as an int. */
- sr_value = extract_unsigned_integer (temp_buffer, 4);
- /* Build the new value. */
- fpscr_c_part1_value = fpscr_value & 0x3fffd;
- fpscr_c_part2_value = (sr_value & 0x7000) << 6;
- fpscr_c_value = fpscr_c_part1_value | fpscr_c_part2_value;
- /* Store that in out buffer!!! */
- store_unsigned_integer (buffer, 4, fpscr_c_value);
- /* FIXME There is surely an endianness gotcha here. */
+ /* Build the value in the provided buffer. */
+ /* Read the real regs for which this one is an alias. */
+ status = pseudo_register_read_portions (gdbarch, regcache,
+ 2, base_regnum, temp_buffer);
+ if (status == REG_VALID)
+ {
+ /* We must pay attention to the endiannes. */
+ sh_register_convert_to_virtual (gdbarch, reg_nr,
+ register_type (gdbarch, reg_nr),
+ temp_buffer, buffer);
+ }
+ return status;
}
-
- else if (reg_nr == tdep->FPUL_C_REGNUM)
+ else if (reg_nr >= FV0_REGNUM && reg_nr <= FV_LAST_REGNUM)
{
- base_regnum = sh64_compact_reg_base_num (reg_nr);
+ base_regnum = fv_reg_base_num (gdbarch, reg_nr);
- /* FPUL_C register is floating point register 32,
- same size, same endianness. */
- regcache_raw_read (regcache, base_regnum, buffer);
+ /* Read the real regs for which this one is an alias. */
+ return pseudo_register_read_portions (gdbarch, regcache,
+ 4, base_regnum, buffer);
}
+ else
+ gdb_assert_not_reached ("invalid pseudo register number");
}
static void
sh_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
- int reg_nr, const void *buffer)
+ int reg_nr, const gdb_byte *buffer)
{
int base_regnum, portion;
- char temp_buffer[MAX_REGISTER_SIZE];
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ gdb_byte temp_buffer[MAX_REGISTER_SIZE];
+
+ if (reg_nr == PSEUDO_BANK_REGNUM)
+ {
+ /* When the bank register is written to, the whole register bank
+ is switched and all values in the bank registers must be read
+ from the target/sim again. We're just invalidating the regcache
+ so that a re-read happens next time it's necessary. */
+ int bregnum;
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
+ regcache_raw_write (regcache, BANK_REGNUM, buffer);
+ for (bregnum = R0_BANK0_REGNUM; bregnum < MACLB_REGNUM; ++bregnum)
+ regcache_invalidate (regcache, bregnum);
+ }
+ else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
{
- base_regnum = dr_reg_base_num (reg_nr);
+ base_regnum = dr_reg_base_num (gdbarch, reg_nr);
- /* We must pay attention to the endiannes. */
- sh_sh4_register_convert_to_raw (REGISTER_VIRTUAL_TYPE (reg_nr), reg_nr,
- buffer, temp_buffer);
+ /* We must pay attention to the endiannes. */
+ sh_register_convert_to_raw (gdbarch, register_type (gdbarch, reg_nr),
+ reg_nr, buffer, temp_buffer);
/* Write the real regs for which this one is an alias. */
for (portion = 0; portion < 2; portion++)
- regcache_raw_write (regcache, base_regnum + portion,
+ regcache_raw_write (regcache, base_regnum + portion,
(temp_buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
+ + register_size (gdbarch,
+ base_regnum) * portion));
}
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
+ else if (reg_nr >= FV0_REGNUM && reg_nr <= FV_LAST_REGNUM)
{
- base_regnum = fv_reg_base_num (reg_nr);
+ base_regnum = fv_reg_base_num (gdbarch, reg_nr);
/* Write the real regs for which this one is an alias. */
for (portion = 0; portion < 4; portion++)
regcache_raw_write (regcache, base_regnum + portion,
- ((char *) buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
+ (buffer
+ + register_size (gdbarch,
+ base_regnum) * portion));
}
}
-static void
-sh64_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
- int reg_nr, const void *buffer)
+static int
+sh_dsp_register_sim_regno (struct gdbarch *gdbarch, int nr)
{
- int base_regnum, portion;
- int offset;
- char temp_buffer[MAX_REGISTER_SIZE];
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-
- if (reg_nr >= tdep->DR0_REGNUM
- && reg_nr <= tdep->DR_LAST_REGNUM)
- {
- base_regnum = dr_reg_base_num (reg_nr);
- /* We must pay attention to the endiannes. */
- sh_sh64_register_convert_to_raw (REGISTER_VIRTUAL_TYPE (reg_nr), reg_nr,
- buffer, temp_buffer);
-
+ if (legacy_register_sim_regno (gdbarch, nr) < 0)
+ return legacy_register_sim_regno (gdbarch, nr);
+ if (nr >= DSR_REGNUM && nr <= Y1_REGNUM)
+ return nr - DSR_REGNUM + SIM_SH_DSR_REGNUM;
+ if (nr == MOD_REGNUM)
+ return SIM_SH_MOD_REGNUM;
+ if (nr == RS_REGNUM)
+ return SIM_SH_RS_REGNUM;
+ if (nr == RE_REGNUM)
+ return SIM_SH_RE_REGNUM;
+ if (nr >= DSP_R0_BANK_REGNUM && nr <= DSP_R7_BANK_REGNUM)
+ return nr - DSP_R0_BANK_REGNUM + SIM_SH_R0_BANK_REGNUM;
+ return nr;
+}
- /* Write the real regs for which this one is an alias. */
- for (portion = 0; portion < 2; portion++)
- regcache_raw_write (regcache, base_regnum + portion,
- (temp_buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
- }
+static int
+sh_sh2a_register_sim_regno (struct gdbarch *gdbarch, int nr)
+{
+ switch (nr)
+ {
+ case TBR_REGNUM:
+ return SIM_SH_TBR_REGNUM;
+ case IBNR_REGNUM:
+ return SIM_SH_IBNR_REGNUM;
+ case IBCR_REGNUM:
+ return SIM_SH_IBCR_REGNUM;
+ case BANK_REGNUM:
+ return SIM_SH_BANK_REGNUM;
+ case MACLB_REGNUM:
+ return SIM_SH_BANK_MACL_REGNUM;
+ case GBRB_REGNUM:
+ return SIM_SH_BANK_GBR_REGNUM;
+ case PRB_REGNUM:
+ return SIM_SH_BANK_PR_REGNUM;
+ case IVNB_REGNUM:
+ return SIM_SH_BANK_IVN_REGNUM;
+ case MACHB_REGNUM:
+ return SIM_SH_BANK_MACH_REGNUM;
+ default:
+ break;
+ }
+ return legacy_register_sim_regno (gdbarch, nr);
+}
+
+/* Set up the register unwinding such that call-clobbered registers are
+ not displayed in frames >0 because the true value is not certain.
+ The 'undefined' registers will show up as 'not available' unless the
+ CFI says otherwise.
+
+ This function is currently set up for SH4 and compatible only. */
- else if (reg_nr >= tdep->FPP0_REGNUM
- && reg_nr <= tdep->FPP_LAST_REGNUM)
- {
- base_regnum = fpp_reg_base_num (reg_nr);
+static void
+sh_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
+ struct dwarf2_frame_state_reg *reg,
+ struct frame_info *this_frame)
+{
+ /* Mark the PC as the destination for the return address. */
+ if (regnum == gdbarch_pc_regnum (gdbarch))
+ reg->how = DWARF2_FRAME_REG_RA;
+
+ /* Mark the stack pointer as the call frame address. */
+ else if (regnum == gdbarch_sp_regnum (gdbarch))
+ reg->how = DWARF2_FRAME_REG_CFA;
+
+ /* The above was taken from the default init_reg in dwarf2-frame.c
+ while the below is SH specific. */
+
+ /* Caller save registers. */
+ else if ((regnum >= R0_REGNUM && regnum <= R0_REGNUM+7)
+ || (regnum >= FR0_REGNUM && regnum <= FR0_REGNUM+11)
+ || (regnum >= DR0_REGNUM && regnum <= DR0_REGNUM+5)
+ || (regnum >= FV0_REGNUM && regnum <= FV0_REGNUM+2)
+ || (regnum == MACH_REGNUM)
+ || (regnum == MACL_REGNUM)
+ || (regnum == FPUL_REGNUM)
+ || (regnum == SR_REGNUM))
+ reg->how = DWARF2_FRAME_REG_UNDEFINED;
+
+ /* Callee save registers. */
+ else if ((regnum >= R0_REGNUM+8 && regnum <= R0_REGNUM+15)
+ || (regnum >= FR0_REGNUM+12 && regnum <= FR0_REGNUM+15)
+ || (regnum >= DR0_REGNUM+6 && regnum <= DR0_REGNUM+8)
+ || (regnum == FV0_REGNUM+3))
+ reg->how = DWARF2_FRAME_REG_SAME_VALUE;
+
+ /* Other registers. These are not in the ABI and may or may not
+ mean anything in frames >0 so don't show them. */
+ else if ((regnum >= R0_BANK0_REGNUM && regnum <= R0_BANK0_REGNUM+15)
+ || (regnum == GBR_REGNUM)
+ || (regnum == VBR_REGNUM)
+ || (regnum == FPSCR_REGNUM)
+ || (regnum == SSR_REGNUM)
+ || (regnum == SPC_REGNUM))
+ reg->how = DWARF2_FRAME_REG_UNDEFINED;
+}
+
+static struct sh_frame_cache *
+sh_alloc_frame_cache (void)
+{
+ struct sh_frame_cache *cache;
+ int i;
- /* Write the real regs for which this one is an alias. */
- for (portion = 0; portion < 2; portion++)
- regcache_raw_write (regcache, base_regnum + portion,
- ((char *) buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
- }
+ cache = FRAME_OBSTACK_ZALLOC (struct sh_frame_cache);
- else if (reg_nr >= tdep->FV0_REGNUM
- && reg_nr <= tdep->FV_LAST_REGNUM)
- {
- base_regnum = fv_reg_base_num (reg_nr);
+ /* Base address. */
+ cache->base = 0;
+ cache->saved_sp = 0;
+ cache->sp_offset = 0;
+ cache->pc = 0;
- /* Write the real regs for which this one is an alias. */
- for (portion = 0; portion < 4; portion++)
- regcache_raw_write (regcache, base_regnum + portion,
- ((char *) buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
- }
+ /* Frameless until proven otherwise. */
+ cache->uses_fp = 0;
- /* sh compact general pseudo registers. 1-to-1 with a shmedia
- register but only 4 bytes of it. */
- else if (reg_nr >= tdep->R0_C_REGNUM
- && reg_nr <= tdep->T_C_REGNUM)
+ /* Saved registers. We initialize these to -1 since zero is a valid
+ offset (that's where fp is supposed to be stored). */
+ for (i = 0; i < SH_NUM_REGS; i++)
{
- base_regnum = sh64_compact_reg_base_num (reg_nr);
- /* reg_nr is 32 bit here, and base_regnum is 64 bits. */
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
- offset = 4;
- else
- offset = 0;
- /* Let's read the value of the base register into a temporary
- buffer, so that overwriting the last four bytes with the new
- value of the pseudo will leave the upper 4 bytes unchanged. */
- regcache_raw_read (regcache, base_regnum, temp_buffer);
- /* Write as an 8 byte quantity */
- memcpy (temp_buffer + offset, buffer, 4);
- regcache_raw_write (regcache, base_regnum, temp_buffer);
+ cache->saved_regs[i] = -1;
}
- /* sh floating point compact pseudo registers. 1-to-1 with a shmedia
- registers. Both are 4 bytes. */
- else if (reg_nr >= tdep->FP0_C_REGNUM
- && reg_nr <= tdep->FP_LAST_C_REGNUM)
- {
- base_regnum = sh64_compact_reg_base_num (reg_nr);
- regcache_raw_write (regcache, base_regnum, buffer);
- }
+ return cache;
+}
- else if (reg_nr >= tdep->DR0_C_REGNUM
- && reg_nr <= tdep->DR_LAST_C_REGNUM)
- {
- base_regnum = sh64_compact_reg_base_num (reg_nr);
- for (portion = 0; portion < 2; portion++)
- {
- /* We must pay attention to the endiannes. */
- sh_sh64_register_convert_to_raw (REGISTER_VIRTUAL_TYPE (reg_nr), reg_nr,
- buffer, temp_buffer);
+static struct sh_frame_cache *
+sh_frame_cache (struct frame_info *this_frame, void **this_cache)
+{
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ struct sh_frame_cache *cache;
+ CORE_ADDR current_pc;
+ int i;
- regcache_raw_write (regcache, base_regnum + portion,
- (temp_buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
- }
+ if (*this_cache)
+ return (struct sh_frame_cache *) *this_cache;
+
+ cache = sh_alloc_frame_cache ();
+ *this_cache = cache;
+
+ /* In principle, for normal frames, fp holds the frame pointer,
+ which holds the base address for the current stack frame.
+ However, for functions that don't need it, the frame pointer is
+ optional. For these "frameless" functions the frame pointer is
+ actually the frame pointer of the calling frame. */
+ cache->base = get_frame_register_unsigned (this_frame, FP_REGNUM);
+ if (cache->base == 0)
+ return cache;
+
+ cache->pc = get_frame_func (this_frame);
+ current_pc = get_frame_pc (this_frame);
+ if (cache->pc != 0)
+ {
+ ULONGEST fpscr;
+
+ /* Check for the existence of the FPSCR register. If it exists,
+ fetch its value for use in prologue analysis. Passing a zero
+ value is the best choice for architecture variants upon which
+ there's no FPSCR register. */
+ if (gdbarch_register_reggroup_p (gdbarch, FPSCR_REGNUM, all_reggroup))
+ fpscr = get_frame_register_unsigned (this_frame, FPSCR_REGNUM);
+ else
+ fpscr = 0;
+
+ sh_analyze_prologue (gdbarch, cache->pc, current_pc, cache, fpscr);
}
- else if (reg_nr >= tdep->FV0_C_REGNUM
- && reg_nr <= tdep->FV_LAST_C_REGNUM)
+ if (!cache->uses_fp)
{
- base_regnum = sh64_compact_reg_base_num (reg_nr);
-
- for (portion = 0; portion < 4; portion++)
- {
- regcache_raw_write (regcache, base_regnum + portion,
- ((char *) buffer
- + REGISTER_RAW_SIZE (base_regnum) * portion));
- }
+ /* We didn't find a valid frame, which means that CACHE->base
+ currently holds the frame pointer for our calling frame. If
+ we're at the start of a function, or somewhere half-way its
+ prologue, the function's frame probably hasn't been fully
+ setup yet. Try to reconstruct the base address for the stack
+ frame by looking at the stack pointer. For truly "frameless"
+ functions this might work too. */
+ cache->base = get_frame_register_unsigned
+ (this_frame, gdbarch_sp_regnum (gdbarch));
}
- else if (reg_nr == tdep->FPSCR_C_REGNUM)
- {
- int fpscr_base_regnum;
- int sr_base_regnum;
- unsigned int fpscr_value;
- unsigned int sr_value;
- unsigned int old_fpscr_value;
- unsigned int old_sr_value;
- unsigned int fpscr_c_value;
- unsigned int fpscr_mask;
- unsigned int sr_mask;
-
- fpscr_base_regnum = tdep->FPSCR_REGNUM;
- sr_base_regnum = tdep->SR_REGNUM;
-
- /* FPSCR_C is a very weird register that contains sparse bits
- from the FPSCR and the SR architectural registers.
- Specifically: */
- /* *INDENT-OFF* */
- /*
- FPSRC_C bit
- 0 Bit 0 of FPSCR
- 1 reserved
- 2-17 Bit 2-18 of FPSCR
- 18-20 Bits 12,13,14 of SR
- 21-31 reserved
- */
- /* *INDENT-ON* */
- /* Get value as an int. */
- fpscr_c_value = extract_unsigned_integer (buffer, 4);
-
- /* Build the new values. */
- fpscr_mask = 0x0003fffd;
- sr_mask = 0x001c0000;
-
- fpscr_value = fpscr_c_value & fpscr_mask;
- sr_value = (fpscr_value & sr_mask) >> 6;
-
- regcache_raw_read (regcache, fpscr_base_regnum, temp_buffer);
- old_fpscr_value = extract_unsigned_integer (temp_buffer, 4);
- old_fpscr_value &= 0xfffc0002;
- fpscr_value |= old_fpscr_value;
- store_unsigned_integer (temp_buffer, 4, fpscr_value);
- regcache_raw_write (regcache, fpscr_base_regnum, temp_buffer);
-
- regcache_raw_read (regcache, sr_base_regnum, temp_buffer);
- old_sr_value = extract_unsigned_integer (temp_buffer, 4);
- old_sr_value &= 0xffff8fff;
- sr_value |= old_sr_value;
- store_unsigned_integer (temp_buffer, 4, sr_value);
- regcache_raw_write (regcache, sr_base_regnum, temp_buffer);
- }
+ /* Now that we have the base address for the stack frame we can
+ calculate the value of sp in the calling frame. */
+ cache->saved_sp = cache->base + cache->sp_offset;
- else if (reg_nr == tdep->FPUL_C_REGNUM)
- {
- base_regnum = sh64_compact_reg_base_num (reg_nr);
- regcache_raw_write (regcache, base_regnum, buffer);
- }
-}
+ /* Adjust all the saved registers such that they contain addresses
+ instead of offsets. */
+ for (i = 0; i < SH_NUM_REGS; i++)
+ if (cache->saved_regs[i] != -1)
+ cache->saved_regs[i] = cache->saved_sp - cache->saved_regs[i] - 4;
-/* Floating point vector of 4 float registers. */
-static void
-do_fv_register_info (int fv_regnum)
-{
- int first_fp_reg_num = fv_reg_base_num (fv_regnum);
- printf_filtered ("fv%d\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n",
- fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_REGNUM,
- (int) read_register (first_fp_reg_num),
- (int) read_register (first_fp_reg_num + 1),
- (int) read_register (first_fp_reg_num + 2),
- (int) read_register (first_fp_reg_num + 3));
+ return cache;
}
-/* Floating point vector of 4 float registers, compact mode. */
-static void
-do_fv_c_register_info (int fv_regnum)
+static struct value *
+sh_frame_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
{
- int first_fp_reg_num = sh64_compact_reg_base_num (fv_regnum);
- printf_filtered ("fv%d_c\t0x%08x\t0x%08x\t0x%08x\t0x%08x\n",
- fv_regnum - gdbarch_tdep (current_gdbarch)->FV0_C_REGNUM,
- (int) read_register (first_fp_reg_num),
- (int) read_register (first_fp_reg_num + 1),
- (int) read_register (first_fp_reg_num + 2),
- (int) read_register (first_fp_reg_num + 3));
-}
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ struct sh_frame_cache *cache = sh_frame_cache (this_frame, this_cache);
-/* Pairs of single regs. The DR are instead double precision
- registers. */
-static void
-do_fpp_register_info (int fpp_regnum)
-{
- int first_fp_reg_num = fpp_reg_base_num (fpp_regnum);
+ gdb_assert (regnum >= 0);
- printf_filtered ("fpp%d\t0x%08x\t0x%08x\n",
- fpp_regnum - gdbarch_tdep (current_gdbarch)->FPP0_REGNUM,
- (int) read_register (first_fp_reg_num),
- (int) read_register (first_fp_reg_num + 1));
-}
+ if (regnum == gdbarch_sp_regnum (gdbarch) && cache->saved_sp)
+ return frame_unwind_got_constant (this_frame, regnum, cache->saved_sp);
-/* Double precision registers. */
-static void
-do_dr_register_info (int dr_regnum)
-{
- int first_fp_reg_num = dr_reg_base_num (dr_regnum);
+ /* The PC of the previous frame is stored in the PR register of
+ the current frame. Frob regnum so that we pull the value from
+ the correct place. */
+ if (regnum == gdbarch_pc_regnum (gdbarch))
+ regnum = PR_REGNUM;
- printf_filtered ("dr%d\t0x%08x%08x\n",
- dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM,
- (int) read_register (first_fp_reg_num),
- (int) read_register (first_fp_reg_num + 1));
+ if (regnum < SH_NUM_REGS && cache->saved_regs[regnum] != -1)
+ return frame_unwind_got_memory (this_frame, regnum,
+ cache->saved_regs[regnum]);
+
+ return frame_unwind_got_register (this_frame, regnum, regnum);
}
-/* Double precision registers, compact mode. */
static void
-do_dr_c_register_info (int dr_regnum)
+sh_frame_this_id (struct frame_info *this_frame, void **this_cache,
+ struct frame_id *this_id)
{
- int first_fp_reg_num = sh64_compact_reg_base_num (dr_regnum);
+ struct sh_frame_cache *cache = sh_frame_cache (this_frame, this_cache);
+
+ /* This marks the outermost frame. */
+ if (cache->base == 0)
+ return;
- printf_filtered ("dr%d_c\t0x%08x%08x\n",
- dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_C_REGNUM,
- (int) read_register (first_fp_reg_num),
- (int) read_register (first_fp_reg_num +1));
+ *this_id = frame_id_build (cache->saved_sp, cache->pc);
}
-/* General register in compact mode. */
-static void
-do_r_c_register_info (int r_c_regnum)
-{
- int regnum = sh64_compact_reg_base_num (r_c_regnum);
+static const struct frame_unwind sh_frame_unwind = {
+ NORMAL_FRAME,
+ default_frame_unwind_stop_reason,
+ sh_frame_this_id,
+ sh_frame_prev_register,
+ NULL,
+ default_frame_sniffer
+};
- printf_filtered ("r%d_c\t0x%08x\n",
- r_c_regnum - gdbarch_tdep (current_gdbarch)->R0_C_REGNUM,
- /*FIXME!!!*/ (int) read_register (regnum));
+static CORE_ADDR
+sh_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
+{
+ return frame_unwind_register_unsigned (next_frame,
+ gdbarch_sp_regnum (gdbarch));
}
-/* FIXME:!! THIS SHOULD TAKE CARE OF GETTING THE RIGHT PORTION OF THE
- shmedia REGISTERS. */
-/* Control registers, compact mode. */
-static void
-do_cr_c_register_info (int cr_c_regnum)
+static CORE_ADDR
+sh_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
- switch (cr_c_regnum)
- {
- case 237: printf_filtered ("pc_c\t0x%08x\n", (int) read_register (cr_c_regnum));
- break;
- case 238: printf_filtered ("gbr_c\t0x%08x\n", (int) read_register (cr_c_regnum));
- break;
- case 239: printf_filtered ("mach_c\t0x%08x\n", (int) read_register (cr_c_regnum));
- break;
- case 240: printf_filtered ("macl_c\t0x%08x\n", (int) read_register (cr_c_regnum));
- break;
- case 241: printf_filtered ("pr_c\t0x%08x\n", (int) read_register (cr_c_regnum));
- break;
- case 242: printf_filtered ("t_c\t0x%08x\n", (int) read_register (cr_c_regnum));
- break;
- case 243: printf_filtered ("fpscr_c\t0x%08x\n", (int) read_register (cr_c_regnum));
- break;
- case 244: printf_filtered ("fpul_c\t0x%08x\n", (int)read_register (cr_c_regnum));
- break;
- }
+ return frame_unwind_register_unsigned (next_frame,
+ gdbarch_pc_regnum (gdbarch));
}
-static void
-sh_do_pseudo_register (int regnum)
+static struct frame_id
+sh_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (regnum < NUM_REGS || regnum >= NUM_REGS + NUM_PSEUDO_REGS)
- internal_error (__FILE__, __LINE__,
- "Invalid pseudo register number %d\n", regnum);
- else if (regnum >= tdep->DR0_REGNUM
- && regnum < tdep->DR_LAST_REGNUM)
- do_dr_register_info (regnum);
- else if (regnum >= tdep->FV0_REGNUM
- && regnum <= tdep->FV_LAST_REGNUM)
- do_fv_register_info (regnum);
+ CORE_ADDR sp = get_frame_register_unsigned (this_frame,
+ gdbarch_sp_regnum (gdbarch));
+ return frame_id_build (sp, get_frame_pc (this_frame));
}
-static void
-sh_do_fp_register (int regnum)
-{ /* do values for FP (float) regs */
- char *raw_buffer;
- double flt; /* double extracted from raw hex data */
- int inv;
- int j;
-
- /* Allocate space for the float. */
- raw_buffer = (char *) alloca (REGISTER_RAW_SIZE (FP0_REGNUM));
-
- /* Get the data in raw format. */
- if (!frame_register_read (deprecated_selected_frame, regnum, raw_buffer))
- error ("can't read register %d (%s)", regnum, REGISTER_NAME (regnum));
-
- /* Get the register as a number */
- flt = unpack_double (builtin_type_float, raw_buffer, &inv);
-
- /* Print the name and some spaces. */
- fputs_filtered (REGISTER_NAME (regnum), gdb_stdout);
- print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), gdb_stdout);
-
- /* Print the value. */
- if (inv)
- printf_filtered ("<invalid float>");
- else
- printf_filtered ("%-10.9g", flt);
+static CORE_ADDR
+sh_frame_base_address (struct frame_info *this_frame, void **this_cache)
+{
+ struct sh_frame_cache *cache = sh_frame_cache (this_frame, this_cache);
- /* Print the fp register as hex. */
- printf_filtered ("\t(raw 0x");
- for (j = 0; j < REGISTER_RAW_SIZE (regnum); j++)
- {
- register int idx = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? j
- : REGISTER_RAW_SIZE (regnum) - 1 - j;
- printf_filtered ("%02x", (unsigned char) raw_buffer[idx]);
- }
- printf_filtered (")");
- printf_filtered ("\n");
+ return cache->base;
}
-static void
-sh64_do_pseudo_register (int regnum)
+static const struct frame_base sh_frame_base = {
+ &sh_frame_unwind,
+ sh_frame_base_address,
+ sh_frame_base_address,
+ sh_frame_base_address
+};
+
+static struct sh_frame_cache *
+sh_make_stub_cache (struct frame_info *this_frame)
{
- /* All the sh64-compact mode registers are pseudo registers. */
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (regnum < NUM_REGS
- || regnum >= NUM_REGS + NUM_PSEUDO_REGS_SH_MEDIA + NUM_PSEUDO_REGS_SH_COMPACT)
- internal_error (__FILE__, __LINE__,
- "Invalid pseudo register number %d\n", regnum);
-
- else if ((regnum >= tdep->DR0_REGNUM
- && regnum <= tdep->DR_LAST_REGNUM))
- do_dr_register_info (regnum);
-
- else if ((regnum >= tdep->DR0_C_REGNUM
- && regnum <= tdep->DR_LAST_C_REGNUM))
- do_dr_c_register_info (regnum);
-
- else if ((regnum >= tdep->FV0_REGNUM
- && regnum <= tdep->FV_LAST_REGNUM))
- do_fv_register_info (regnum);
-
- else if ((regnum >= tdep->FV0_C_REGNUM
- && regnum <= tdep->FV_LAST_C_REGNUM))
- do_fv_c_register_info (regnum);
-
- else if (regnum >= tdep->FPP0_REGNUM
- && regnum <= tdep->FPP_LAST_REGNUM)
- do_fpp_register_info (regnum);
-
- else if (regnum >= tdep->R0_C_REGNUM
- && regnum <= tdep->R_LAST_C_REGNUM)
- do_r_c_register_info (regnum); /* FIXME, this function will not print the right format */
-
- else if (regnum >= tdep->FP0_C_REGNUM
- && regnum <= tdep->FP_LAST_C_REGNUM)
- sh_do_fp_register (regnum); /* this should work also for pseudoregs */
-
- else if (regnum >= tdep->PC_C_REGNUM
- && regnum <= tdep->FPUL_C_REGNUM)
- do_cr_c_register_info (regnum);
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ struct sh_frame_cache *cache;
+
+ cache = sh_alloc_frame_cache ();
+
+ cache->saved_sp
+ = get_frame_register_unsigned (this_frame, gdbarch_sp_regnum (gdbarch));
+ return cache;
}
static void
-sh_do_register (int regnum)
+sh_stub_this_id (struct frame_info *this_frame, void **this_cache,
+ struct frame_id *this_id)
{
- char raw_buffer[MAX_REGISTER_SIZE];
-
- fputs_filtered (REGISTER_NAME (regnum), gdb_stdout);
- print_spaces_filtered (15 - strlen (REGISTER_NAME (regnum)), gdb_stdout);
-
- /* Get the data in raw format. */
- if (!frame_register_read (deprecated_selected_frame, regnum, raw_buffer))
- printf_filtered ("*value not available*\n");
-
- val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0, 0,
- gdb_stdout, 'x', 1, 0, Val_pretty_default);
- printf_filtered ("\t");
- val_print (REGISTER_VIRTUAL_TYPE (regnum), raw_buffer, 0, 0,
- gdb_stdout, 0, 1, 0, Val_pretty_default);
- printf_filtered ("\n");
+ struct sh_frame_cache *cache;
+
+ if (*this_cache == NULL)
+ *this_cache = sh_make_stub_cache (this_frame);
+ cache = (struct sh_frame_cache *) *this_cache;
+
+ *this_id = frame_id_build (cache->saved_sp, get_frame_pc (this_frame));
}
-static void
-sh_print_register (int regnum)
+static int
+sh_stub_unwind_sniffer (const struct frame_unwind *self,
+ struct frame_info *this_frame,
+ void **this_prologue_cache)
{
- if (regnum < 0 || regnum >= NUM_REGS + NUM_PSEUDO_REGS)
- internal_error (__FILE__, __LINE__,
- "Invalid register number %d\n", regnum);
+ CORE_ADDR addr_in_block;
- else if (regnum >= 0 && regnum < NUM_REGS)
- {
- if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT)
- sh_do_fp_register (regnum); /* FP regs */
- else
- sh_do_register (regnum); /* All other regs */
- }
+ addr_in_block = get_frame_address_in_block (this_frame);
+ if (in_plt_section (addr_in_block))
+ return 1;
- else if (regnum < NUM_REGS + NUM_PSEUDO_REGS)
- do_pseudo_register (regnum);
+ return 0;
}
-static void
-sh_do_registers_info (int regnum, int fpregs)
+static const struct frame_unwind sh_stub_unwind =
{
- if (regnum != -1) /* do one specified register */
- {
- if (*(REGISTER_NAME (regnum)) == '\0')
- error ("Not a valid register for the current processor type");
+ NORMAL_FRAME,
+ default_frame_unwind_stop_reason,
+ sh_stub_this_id,
+ sh_frame_prev_register,
+ NULL,
+ sh_stub_unwind_sniffer
+};
- sh_print_register (regnum);
- }
- else
- /* do all (or most) registers */
- {
- regnum = 0;
- while (regnum < NUM_REGS)
+/* Implement the stack_frame_destroyed_p gdbarch method.
+
+ The epilogue is defined here as the area at the end of a function,
+ either on the `ret' instruction itself or after an instruction which
+ destroys the function's stack frame. */
+
+static int
+sh_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc)
+{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ CORE_ADDR func_addr = 0, func_end = 0;
+
+ if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
+ {
+ ULONGEST inst;
+ /* The sh epilogue is max. 14 bytes long. Give another 14 bytes
+ for a nop and some fixed data (e.g. big offsets) which are
+ unfortunately also treated as part of the function (which
+ means, they are below func_end. */
+ CORE_ADDR addr = func_end - 28;
+ if (addr < func_addr + 4)
+ addr = func_addr + 4;
+ if (pc < addr)
+ return 0;
+
+ /* First search forward until hitting an rts. */
+ while (addr < func_end
+ && !IS_RTS (read_memory_unsigned_integer (addr, 2, byte_order)))
+ addr += 2;
+ if (addr >= func_end)
+ return 0;
+
+ /* At this point we should find a mov.l @r15+,r14 instruction,
+ either before or after the rts. If not, then the function has
+ probably no "normal" epilogue and we bail out here. */
+ inst = read_memory_unsigned_integer (addr - 2, 2, byte_order);
+ if (IS_RESTORE_FP (read_memory_unsigned_integer (addr - 2, 2,
+ byte_order)))
+ addr -= 2;
+ else if (!IS_RESTORE_FP (read_memory_unsigned_integer (addr + 2, 2,
+ byte_order)))
+ return 0;
+
+ inst = read_memory_unsigned_integer (addr - 2, 2, byte_order);
+
+ /* Step over possible lds.l @r15+,macl. */
+ if (IS_MACL_LDS (inst))
{
- /* If the register name is empty, it is undefined for this
- processor, so don't display anything. */
- if (REGISTER_NAME (regnum) == NULL
- || *(REGISTER_NAME (regnum)) == '\0')
- {
- regnum++;
- continue;
- }
+ addr -= 2;
+ inst = read_memory_unsigned_integer (addr - 2, 2, byte_order);
+ }
- if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (regnum)) == TYPE_CODE_FLT)
- {
- if (fpregs)
- {
- /* true for "INFO ALL-REGISTERS" command */
- sh_do_fp_register (regnum); /* FP regs */
- regnum ++;
- }
- else
- regnum += (gdbarch_tdep (current_gdbarch)->FP_LAST_REGNUM - FP0_REGNUM); /* skip FP regs */
- }
- else
- {
- sh_do_register (regnum); /* All other regs */
- regnum++;
- }
+ /* Step over possible lds.l @r15+,pr. */
+ if (IS_LDS (inst))
+ {
+ addr -= 2;
+ inst = read_memory_unsigned_integer (addr - 2, 2, byte_order);
}
- if (fpregs)
- while (regnum < NUM_REGS + NUM_PSEUDO_REGS)
- {
- do_pseudo_register (regnum);
- regnum++;
- }
- }
-}
+ /* Step over possible mov r14,r15. */
+ if (IS_MOV_FP_SP (inst))
+ {
+ addr -= 2;
+ inst = read_memory_unsigned_integer (addr - 2, 2, byte_order);
+ }
-static void
-sh_compact_do_registers_info (int regnum, int fpregs)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
- if (regnum != -1) /* do one specified register */
- {
- if (*(REGISTER_NAME (regnum)) == '\0')
- error ("Not a valid register for the current processor type");
+ /* Now check for FP adjustments, using add #imm,r14 or add rX, r14
+ instructions. */
+ while (addr > func_addr + 4
+ && (IS_ADD_REG_TO_FP (inst) || IS_ADD_IMM_FP (inst)))
+ {
+ addr -= 2;
+ inst = read_memory_unsigned_integer (addr - 2, 2, byte_order);
+ }
- if (regnum >= 0 && regnum < tdep->R0_C_REGNUM)
- error ("Not a valid register for the current processor mode.");
+ /* On SH2a check if the previous instruction was perhaps a MOVI20.
+ That's allowed for the epilogue. */
+ if ((gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_sh2a
+ || gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_sh2a_nofpu)
+ && addr > func_addr + 6
+ && IS_MOVI20 (read_memory_unsigned_integer (addr - 4, 2,
+ byte_order)))
+ addr -= 4;
- sh_print_register (regnum);
- }
- else
- /* do all compact registers */
- {
- regnum = tdep->R0_C_REGNUM;
- while (regnum < NUM_REGS + NUM_PSEUDO_REGS)
- {
- do_pseudo_register (regnum);
- regnum++;
- }
+ if (pc >= addr)
+ return 1;
}
+ return 0;
}
-static void
-sh64_do_registers_info (int regnum, int fpregs)
-{
- if (pc_is_isa32 (get_frame_pc (deprecated_selected_frame)))
- sh_do_registers_info (regnum, fpregs);
- else
- sh_compact_do_registers_info (regnum, fpregs);
-}
-
-#ifdef SVR4_SHARED_LIBS
-/* Fetch (and possibly build) an appropriate link_map_offsets structure
- for native i386 linux targets using the struct offsets defined in
- link.h (but without actual reference to that file).
+/* Supply register REGNUM from the buffer specified by REGS and LEN
+ in the register set REGSET to register cache REGCACHE.
+ REGTABLE specifies where each register can be found in REGS.
+ If REGNUM is -1, do this for all registers in REGSET. */
- This makes it possible to access i386-linux shared libraries from
- a gdb that was not built on an i386-linux host (for cross debugging).
- */
-
-struct link_map_offsets *
-sh_linux_svr4_fetch_link_map_offsets (void)
+void
+sh_corefile_supply_regset (const struct regset *regset,
+ struct regcache *regcache,
+ int regnum, const void *regs, size_t len)
{
- static struct link_map_offsets lmo;
- static struct link_map_offsets *lmp = 0;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ const struct sh_corefile_regmap *regmap = (regset == &sh_corefile_gregset
+ ? tdep->core_gregmap
+ : tdep->core_fpregmap);
+ int i;
- if (lmp == 0)
+ for (i = 0; regmap[i].regnum != -1; i++)
{
- lmp = &lmo;
+ if ((regnum == -1 || regnum == regmap[i].regnum)
+ && regmap[i].offset + 4 <= len)
+ regcache_raw_supply (regcache, regmap[i].regnum,
+ (char *)regs + regmap[i].offset);
+ }
+}
- lmo.r_debug_size = 8; /* 20 not actual size but all we need */
+/* Collect register REGNUM in the register set REGSET from register cache
+ REGCACHE into the buffer specified by REGS and LEN.
+ REGTABLE specifies where each register can be found in REGS.
+ If REGNUM is -1, do this for all registers in REGSET. */
- lmo.r_map_offset = 4;
- lmo.r_map_size = 4;
+void
+sh_corefile_collect_regset (const struct regset *regset,
+ const struct regcache *regcache,
+ int regnum, void *regs, size_t len)
+{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ const struct sh_corefile_regmap *regmap = (regset == &sh_corefile_gregset
+ ? tdep->core_gregmap
+ : tdep->core_fpregmap);
+ int i;
- lmo.link_map_size = 20; /* 552 not actual size but all we need */
+ for (i = 0; regmap[i].regnum != -1; i++)
+ {
+ if ((regnum == -1 || regnum == regmap[i].regnum)
+ && regmap[i].offset + 4 <= len)
+ regcache_raw_collect (regcache, regmap[i].regnum,
+ (char *)regs + regmap[i].offset);
+ }
+}
- lmo.l_addr_offset = 0;
- lmo.l_addr_size = 4;
+/* The following two regsets have the same contents, so it is tempting to
+ unify them, but they are distiguished by their address, so don't. */
- lmo.l_name_offset = 4;
- lmo.l_name_size = 4;
+const struct regset sh_corefile_gregset =
+{
+ NULL,
+ sh_corefile_supply_regset,
+ sh_corefile_collect_regset
+};
- lmo.l_next_offset = 12;
- lmo.l_next_size = 4;
+static const struct regset sh_corefile_fpregset =
+{
+ NULL,
+ sh_corefile_supply_regset,
+ sh_corefile_collect_regset
+};
- lmo.l_prev_offset = 16;
- lmo.l_prev_size = 4;
- }
+static void
+sh_iterate_over_regset_sections (struct gdbarch *gdbarch,
+ iterate_over_regset_sections_cb *cb,
+ void *cb_data,
+ const struct regcache *regcache)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+ if (tdep->core_gregmap != NULL)
+ cb (".reg", tdep->sizeof_gregset, &sh_corefile_gregset, NULL, cb_data);
- return lmp;
+ if (tdep->core_fpregmap != NULL)
+ cb (".reg2", tdep->sizeof_fpregset, &sh_corefile_fpregset, NULL, cb_data);
}
-#endif /* SVR4_SHARED_LIBS */
-\f
-enum
-{
- DSP_DSR_REGNUM = 24,
- DSP_A0G_REGNUM,
- DSP_A0_REGNUM,
- DSP_A1G_REGNUM,
- DSP_A1_REGNUM,
- DSP_M0_REGNUM,
- DSP_M1_REGNUM,
- DSP_X0_REGNUM,
- DSP_X1_REGNUM,
- DSP_Y0_REGNUM,
- DSP_Y1_REGNUM,
-
- DSP_MOD_REGNUM = 40,
-
- DSP_RS_REGNUM = 43,
- DSP_RE_REGNUM,
-
- DSP_R0_BANK_REGNUM = 51,
- DSP_R7_BANK_REGNUM = DSP_R0_BANK_REGNUM + 7
-};
+/* This is the implementation of gdbarch method
+ return_in_first_hidden_param_p. */
static int
-sh_dsp_register_sim_regno (int nr)
+sh_return_in_first_hidden_param_p (struct gdbarch *gdbarch,
+ struct type *type)
{
- if (legacy_register_sim_regno (nr) < 0)
- return legacy_register_sim_regno (nr);
- if (nr >= DSP_DSR_REGNUM && nr < DSP_Y1_REGNUM)
- return nr - DSP_DSR_REGNUM + SIM_SH_DSR_REGNUM;
- if (nr == DSP_MOD_REGNUM)
- return SIM_SH_MOD_REGNUM;
- if (nr == DSP_RS_REGNUM)
- return SIM_SH_RS_REGNUM;
- if (nr == DSP_RE_REGNUM)
- return SIM_SH_RE_REGNUM;
- if (nr >= DSP_R0_BANK_REGNUM && nr <= DSP_R7_BANK_REGNUM)
- return nr - DSP_R0_BANK_REGNUM + SIM_SH_R0_BANK_REGNUM;
- return nr;
+ return 0;
}
+
\f
-static gdbarch_init_ftype sh_gdbarch_init;
static struct gdbarch *
sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
- static LONGEST sh_call_dummy_words[] = {0};
struct gdbarch *gdbarch;
struct gdbarch_tdep *tdep;
- gdbarch_register_name_ftype *sh_register_name;
- gdbarch_deprecated_store_return_value_ftype *sh_store_return_value;
- gdbarch_deprecated_register_virtual_type_ftype *sh_register_virtual_type;
+
+ /* SH5 is handled entirely in sh64-tdep.c. */
+ if (info.bfd_arch_info->mach == bfd_mach_sh5)
+ return sh64_gdbarch_init (info, arches);
/* If there is already a candidate, use it. */
arches = gdbarch_list_lookup_by_info (arches, &info);
return arches->gdbarch;
/* None found, create a new architecture from the information
- provided. */
- tdep = XMALLOC (struct gdbarch_tdep);
+ provided. */
+ tdep = XCNEW (struct gdbarch_tdep);
gdbarch = gdbarch_alloc (&info, tdep);
- /* NOTE: cagney/2002-12-06: This can be deleted when this arch is
- ready to unwind the PC first (see frame.c:get_prev_frame()). */
- set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default);
-
- /* Initialize the register numbers that are not common to all the
- variants to -1, if necessary thse will be overwritten in the case
- statement below. */
- tdep->FPUL_REGNUM = -1;
- tdep->FPSCR_REGNUM = -1;
- tdep->PR_REGNUM = 17;
- tdep->SR_REGNUM = 22;
- tdep->DSR_REGNUM = -1;
- tdep->FP_LAST_REGNUM = -1;
- tdep->A0G_REGNUM = -1;
- tdep->A0_REGNUM = -1;
- tdep->A1G_REGNUM = -1;
- tdep->A1_REGNUM = -1;
- tdep->M0_REGNUM = -1;
- tdep->M1_REGNUM = -1;
- tdep->X0_REGNUM = -1;
- tdep->X1_REGNUM = -1;
- tdep->Y0_REGNUM = -1;
- tdep->Y1_REGNUM = -1;
- tdep->MOD_REGNUM = -1;
- tdep->RS_REGNUM = -1;
- tdep->RE_REGNUM = -1;
- tdep->SSR_REGNUM = -1;
- tdep->SPC_REGNUM = -1;
- tdep->DR0_REGNUM = -1;
- tdep->DR_LAST_REGNUM = -1;
- tdep->FV0_REGNUM = -1;
- tdep->FV_LAST_REGNUM = -1;
- tdep->ARG0_REGNUM = 4;
- tdep->ARGLAST_REGNUM = 7;
- tdep->RETURN_REGNUM = 0;
- tdep->FLOAT_ARGLAST_REGNUM = -1;
-
- tdep->sh_abi = SH_ABI_UNKNOWN;
-
- set_gdbarch_fp0_regnum (gdbarch, -1);
- set_gdbarch_num_pseudo_regs (gdbarch, 0);
- set_gdbarch_deprecated_max_register_raw_size (gdbarch, 4);
- set_gdbarch_deprecated_max_register_virtual_size (gdbarch, 4);
+ set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT);
+ set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
+ set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT);
+ set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT);
+ set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
+ set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
- set_gdbarch_num_regs (gdbarch, SH_DEFAULT_NUM_REGS);
+
+ set_gdbarch_num_regs (gdbarch, SH_NUM_REGS);
set_gdbarch_sp_regnum (gdbarch, 15);
- set_gdbarch_deprecated_fp_regnum (gdbarch, 14);
set_gdbarch_pc_regnum (gdbarch, 16);
- set_gdbarch_deprecated_register_size (gdbarch, 4);
- set_gdbarch_deprecated_register_bytes (gdbarch, SH_DEFAULT_NUM_REGS * 4);
- set_gdbarch_deprecated_do_registers_info (gdbarch, sh_do_registers_info);
+ set_gdbarch_fp0_regnum (gdbarch, -1);
+ set_gdbarch_num_pseudo_regs (gdbarch, 0);
+
+ set_gdbarch_register_type (gdbarch, sh_default_register_type);
+ set_gdbarch_register_reggroup_p (gdbarch, sh_register_reggroup_p);
+
set_gdbarch_breakpoint_from_pc (gdbarch, sh_breakpoint_from_pc);
- set_gdbarch_deprecated_frame_chain (gdbarch, sh_frame_chain);
- set_gdbarch_deprecated_get_saved_register (gdbarch, deprecated_generic_get_saved_register);
- set_gdbarch_deprecated_init_extra_frame_info (gdbarch, sh_init_extra_frame_info);
- set_gdbarch_deprecated_extract_return_value (gdbarch, sh_extract_return_value);
- set_gdbarch_deprecated_push_arguments (gdbarch, sh_push_arguments);
- set_gdbarch_deprecated_store_struct_return (gdbarch, sh_store_struct_return);
- set_gdbarch_use_struct_convention (gdbarch, sh_use_struct_convention);
- set_gdbarch_deprecated_extract_struct_value_address (gdbarch, sh_extract_struct_value_address);
- set_gdbarch_deprecated_pop_frame (gdbarch, sh_pop_frame);
- set_gdbarch_print_insn (gdbarch, gdb_print_insn_sh);
+
+ set_gdbarch_print_insn (gdbarch, print_insn_sh);
set_gdbarch_register_sim_regno (gdbarch, legacy_register_sim_regno);
- skip_prologue_hard_way = sh_skip_prologue_hard_way;
- do_pseudo_register = sh_do_pseudo_register;
+
+ set_gdbarch_return_value (gdbarch, sh_return_value_nofpu);
+
+ set_gdbarch_skip_prologue (gdbarch, sh_skip_prologue);
+ set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
+
+ set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_nofpu);
+ set_gdbarch_return_in_first_hidden_param_p (gdbarch,
+ sh_return_in_first_hidden_param_p);
+
+ set_gdbarch_believe_pcc_promotion (gdbarch, 1);
+
+ set_gdbarch_frame_align (gdbarch, sh_frame_align);
+ set_gdbarch_unwind_sp (gdbarch, sh_unwind_sp);
+ set_gdbarch_unwind_pc (gdbarch, sh_unwind_pc);
+ set_gdbarch_dummy_id (gdbarch, sh_dummy_id);
+ frame_base_set_default (gdbarch, &sh_frame_base);
+
+ set_gdbarch_stack_frame_destroyed_p (gdbarch, sh_stack_frame_destroyed_p);
+
+ dwarf2_frame_set_init_reg (gdbarch, sh_dwarf2_frame_init_reg);
+
+ set_gdbarch_iterate_over_regset_sections
+ (gdbarch, sh_iterate_over_regset_sections);
switch (info.bfd_arch_info->mach)
{
case bfd_mach_sh:
- sh_register_name = sh_sh_register_name;
- sh_show_regs = sh_generic_show_regs;
- sh_store_return_value = sh_default_store_return_value;
- sh_register_virtual_type = sh_default_register_virtual_type;
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_deprecated_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_byte (gdbarch, sh_default_register_byte);
+ set_gdbarch_register_name (gdbarch, sh_sh_register_name);
break;
+
case bfd_mach_sh2:
- sh_register_name = sh_sh_register_name;
- sh_show_regs = sh_generic_show_regs;
- sh_store_return_value = sh_default_store_return_value;
- sh_register_virtual_type = sh_default_register_virtual_type;
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_deprecated_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_byte (gdbarch, sh_default_register_byte);
- break;
+ set_gdbarch_register_name (gdbarch, sh_sh_register_name);
+ break;
+
case bfd_mach_sh2e:
- sh_register_name = sh_sh2e_register_name;
- sh_show_regs = sh2e_show_regs;
- sh_store_return_value = sh3e_sh4_store_return_value;
- sh_register_virtual_type = sh_sh3e_register_virtual_type;
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_deprecated_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_byte (gdbarch, sh_default_register_byte);
+ /* doubles on sh2e and sh3e are actually 4 byte. */
+ set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
+ set_gdbarch_double_format (gdbarch, floatformats_ieee_single);
+
+ set_gdbarch_register_name (gdbarch, sh_sh2e_register_name);
+ set_gdbarch_register_type (gdbarch, sh_sh3e_register_type);
+ set_gdbarch_fp0_regnum (gdbarch, 25);
+ set_gdbarch_return_value (gdbarch, sh_return_value_fpu);
+ set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
+ break;
+
+ case bfd_mach_sh2a:
+ set_gdbarch_register_name (gdbarch, sh_sh2a_register_name);
+ set_gdbarch_register_type (gdbarch, sh_sh2a_register_type);
+ set_gdbarch_register_sim_regno (gdbarch, sh_sh2a_register_sim_regno);
+
set_gdbarch_fp0_regnum (gdbarch, 25);
- tdep->FPUL_REGNUM = 23;
- tdep->FPSCR_REGNUM = 24;
- tdep->FP_LAST_REGNUM = 40;
+ set_gdbarch_num_pseudo_regs (gdbarch, 9);
+ set_gdbarch_pseudo_register_read (gdbarch, sh_pseudo_register_read);
+ set_gdbarch_pseudo_register_write (gdbarch, sh_pseudo_register_write);
+ set_gdbarch_return_value (gdbarch, sh_return_value_fpu);
+ set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
+ break;
+
+ case bfd_mach_sh2a_nofpu:
+ set_gdbarch_register_name (gdbarch, sh_sh2a_nofpu_register_name);
+ set_gdbarch_register_sim_regno (gdbarch, sh_sh2a_register_sim_regno);
+
+ set_gdbarch_num_pseudo_regs (gdbarch, 1);
+ set_gdbarch_pseudo_register_read (gdbarch, sh_pseudo_register_read);
+ set_gdbarch_pseudo_register_write (gdbarch, sh_pseudo_register_write);
break;
+
case bfd_mach_sh_dsp:
- sh_register_name = sh_sh_dsp_register_name;
- sh_show_regs = sh_dsp_show_regs;
- sh_store_return_value = sh_default_store_return_value;
- sh_register_virtual_type = sh_default_register_virtual_type;
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_deprecated_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_byte (gdbarch, sh_default_register_byte);
+ set_gdbarch_register_name (gdbarch, sh_sh_dsp_register_name);
set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno);
- tdep->DSR_REGNUM = 24;
- tdep->A0G_REGNUM = 25;
- tdep->A0_REGNUM = 26;
- tdep->A1G_REGNUM = 27;
- tdep->A1_REGNUM = 28;
- tdep->M0_REGNUM = 29;
- tdep->M1_REGNUM = 30;
- tdep->X0_REGNUM = 31;
- tdep->X1_REGNUM = 32;
- tdep->Y0_REGNUM = 33;
- tdep->Y1_REGNUM = 34;
- tdep->MOD_REGNUM = 40;
- tdep->RS_REGNUM = 43;
- tdep->RE_REGNUM = 44;
break;
+
case bfd_mach_sh3:
- sh_register_name = sh_sh3_register_name;
- sh_show_regs = sh3_show_regs;
- sh_store_return_value = sh_default_store_return_value;
- sh_register_virtual_type = sh_default_register_virtual_type;
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_deprecated_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_byte (gdbarch, sh_default_register_byte);
- tdep->SSR_REGNUM = 41;
- tdep->SPC_REGNUM = 42;
+ case bfd_mach_sh3_nommu:
+ case bfd_mach_sh2a_nofpu_or_sh3_nommu:
+ set_gdbarch_register_name (gdbarch, sh_sh3_register_name);
break;
+
case bfd_mach_sh3e:
- sh_register_name = sh_sh3e_register_name;
- sh_show_regs = sh3e_show_regs;
- sh_store_return_value = sh3e_sh4_store_return_value;
- sh_register_virtual_type = sh_sh3e_register_virtual_type;
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs);
- set_gdbarch_deprecated_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_byte (gdbarch, sh_default_register_byte);
- set_gdbarch_deprecated_extract_return_value (gdbarch, sh3e_sh4_extract_return_value);
+ case bfd_mach_sh2a_or_sh3e:
+ /* doubles on sh2e and sh3e are actually 4 byte. */
+ set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
+ set_gdbarch_double_format (gdbarch, floatformats_ieee_single);
+
+ set_gdbarch_register_name (gdbarch, sh_sh3e_register_name);
+ set_gdbarch_register_type (gdbarch, sh_sh3e_register_type);
set_gdbarch_fp0_regnum (gdbarch, 25);
- tdep->FPUL_REGNUM = 23;
- tdep->FPSCR_REGNUM = 24;
- tdep->FP_LAST_REGNUM = 40;
- tdep->SSR_REGNUM = 41;
- tdep->SPC_REGNUM = 42;
+ set_gdbarch_return_value (gdbarch, sh_return_value_fpu);
+ set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
break;
+
case bfd_mach_sh3_dsp:
- sh_register_name = sh_sh3_dsp_register_name;
- sh_show_regs = sh3_dsp_show_regs;
- sh_store_return_value = sh_default_store_return_value;
- sh_register_virtual_type = sh_default_register_virtual_type;
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_deprecated_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_byte (gdbarch, sh_default_register_byte);
- tdep->DSR_REGNUM = 24;
- tdep->A0G_REGNUM = 25;
- tdep->A0_REGNUM = 26;
- tdep->A1G_REGNUM = 27;
- tdep->A1_REGNUM = 28;
- tdep->M0_REGNUM = 29;
- tdep->M1_REGNUM = 30;
- tdep->X0_REGNUM = 31;
- tdep->X1_REGNUM = 32;
- tdep->Y0_REGNUM = 33;
- tdep->Y1_REGNUM = 34;
- tdep->MOD_REGNUM = 40;
- tdep->RS_REGNUM = 43;
- tdep->RE_REGNUM = 44;
- tdep->SSR_REGNUM = 41;
- tdep->SPC_REGNUM = 42;
+ set_gdbarch_register_name (gdbarch, sh_sh3_dsp_register_name);
+ set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno);
break;
+
case bfd_mach_sh4:
- sh_register_name = sh_sh4_register_name;
- sh_show_regs = sh4_show_regs;
- sh_store_return_value = sh3e_sh4_store_return_value;
- sh_register_virtual_type = sh_sh4_register_virtual_type;
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_fp_frame_init_saved_regs);
- set_gdbarch_deprecated_extract_return_value (gdbarch, sh3e_sh4_extract_return_value);
+ case bfd_mach_sh4a:
+ case bfd_mach_sh2a_or_sh4:
+ set_gdbarch_register_name (gdbarch, sh_sh4_register_name);
+ set_gdbarch_register_type (gdbarch, sh_sh4_register_type);
set_gdbarch_fp0_regnum (gdbarch, 25);
- set_gdbarch_deprecated_register_raw_size (gdbarch, sh_sh4_register_raw_size);
- set_gdbarch_deprecated_register_virtual_size (gdbarch, sh_sh4_register_raw_size);
- set_gdbarch_deprecated_register_byte (gdbarch, sh_sh4_register_byte);
- set_gdbarch_num_pseudo_regs (gdbarch, 12);
- set_gdbarch_deprecated_max_register_raw_size (gdbarch, 4 * 4);
- set_gdbarch_deprecated_max_register_virtual_size (gdbarch, 4 * 4);
+ set_gdbarch_num_pseudo_regs (gdbarch, 13);
set_gdbarch_pseudo_register_read (gdbarch, sh_pseudo_register_read);
set_gdbarch_pseudo_register_write (gdbarch, sh_pseudo_register_write);
- tdep->FPUL_REGNUM = 23;
- tdep->FPSCR_REGNUM = 24;
- tdep->FP_LAST_REGNUM = 40;
- tdep->SSR_REGNUM = 41;
- tdep->SPC_REGNUM = 42;
- tdep->DR0_REGNUM = 59;
- tdep->DR_LAST_REGNUM = 66;
- tdep->FV0_REGNUM = 67;
- tdep->FV_LAST_REGNUM = 70;
+ set_gdbarch_return_value (gdbarch, sh_return_value_fpu);
+ set_gdbarch_push_dummy_call (gdbarch, sh_push_dummy_call_fpu);
break;
- case bfd_mach_sh5:
- tdep->PR_REGNUM = 18;
- tdep->SR_REGNUM = 65;
- tdep->FPSCR_REGNUM = SIM_SH64_FPCSR_REGNUM;
- tdep->FP_LAST_REGNUM = SIM_SH64_FR0_REGNUM + SIM_SH64_NR_FP_REGS - 1;
- tdep->SSR_REGNUM = SIM_SH64_SSR_REGNUM;
- tdep->SPC_REGNUM = SIM_SH64_SPC_REGNUM;
- tdep->TR7_REGNUM = SIM_SH64_TR0_REGNUM + 7;
- tdep->FPP0_REGNUM = 173;
- tdep->FPP_LAST_REGNUM = 204;
- tdep->DR0_REGNUM = 141;
- tdep->DR_LAST_REGNUM = 172;
- tdep->FV0_REGNUM = 205;
- tdep->FV_LAST_REGNUM = 220;
- tdep->R0_C_REGNUM = 221;
- tdep->R_LAST_C_REGNUM = 236;
- tdep->PC_C_REGNUM = 237;
- tdep->GBR_C_REGNUM = 238;
- tdep->MACH_C_REGNUM = 239;
- tdep->MACL_C_REGNUM = 240;
- tdep->PR_C_REGNUM = 241;
- tdep->T_C_REGNUM = 242;
- tdep->FPSCR_C_REGNUM = 243;
- tdep->FPUL_C_REGNUM = 244;
- tdep->FP0_C_REGNUM = 245;
- tdep->FP_LAST_C_REGNUM = 260;
- tdep->DR0_C_REGNUM = 261;
- tdep->DR_LAST_C_REGNUM = 268;
- tdep->FV0_C_REGNUM = 269;
- tdep->FV_LAST_C_REGNUM = 272;
- tdep->ARG0_REGNUM = 2;
- tdep->ARGLAST_REGNUM = 9;
- tdep->RETURN_REGNUM = 2;
- tdep->FLOAT_ARGLAST_REGNUM = 11;
-
- set_gdbarch_num_pseudo_regs (gdbarch, NUM_PSEUDO_REGS_SH_MEDIA + NUM_PSEUDO_REGS_SH_COMPACT);
- set_gdbarch_fp0_regnum (gdbarch, SIM_SH64_FR0_REGNUM);
- set_gdbarch_pc_regnum (gdbarch, 64);
-
- /* Determine the ABI */
- if (bfd_get_arch_size (info.abfd) == 64)
- {
- /* If the ABI is the 64-bit one, it can only be sh-media. */
- tdep->sh_abi = SH_ABI_64;
- set_gdbarch_ptr_bit (gdbarch, 8 * TARGET_CHAR_BIT);
- set_gdbarch_long_bit (gdbarch, 8 * TARGET_CHAR_BIT);
- }
- else
- {
- /* If the ABI is the 32-bit one it could be either media or
- compact. */
- tdep->sh_abi = SH_ABI_32;
- set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
- set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
- }
- /* the number of real registers is the same whether we are in
- ISA16(compact) or ISA32(media). */
- set_gdbarch_num_regs (gdbarch, SIM_SH64_NR_REGS);
- set_gdbarch_deprecated_register_size (gdbarch, 8); /*????*/
- set_gdbarch_deprecated_register_bytes (gdbarch,
- ((SIM_SH64_NR_FP_REGS + 1) * 4)
- + (SIM_SH64_NR_REGS - SIM_SH64_NR_FP_REGS -1) * 8);
-
- sh_register_name = sh_sh64_register_name;
- sh_show_regs = sh64_show_regs;
- sh_register_virtual_type = sh_sh64_register_virtual_type;
- sh_store_return_value = sh64_store_return_value;
- skip_prologue_hard_way = sh64_skip_prologue_hard_way;
- do_pseudo_register = sh64_do_pseudo_register;
- set_gdbarch_deprecated_register_raw_size (gdbarch, sh_sh64_register_raw_size);
- set_gdbarch_deprecated_register_virtual_size (gdbarch, sh_sh64_register_raw_size);
- set_gdbarch_deprecated_register_byte (gdbarch, sh_sh64_register_byte);
- /* This seems awfully wrong!*/
- /*set_gdbarch_deprecated_max_register_raw_size (gdbarch, 8);*/
- /* should include the size of the pseudo regs. */
- set_gdbarch_deprecated_max_register_raw_size (gdbarch, 4 * 4);
- /* Or should that go in the virtual_size? */
- /*set_gdbarch_deprecated_max_register_virtual_size (gdbarch, 8);*/
- set_gdbarch_deprecated_max_register_virtual_size (gdbarch, 4 * 4);
- set_gdbarch_pseudo_register_read (gdbarch, sh64_pseudo_register_read);
- set_gdbarch_pseudo_register_write (gdbarch, sh64_pseudo_register_write);
-
- set_gdbarch_deprecated_do_registers_info (gdbarch, sh64_do_registers_info);
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh64_nofp_frame_init_saved_regs);
- set_gdbarch_breakpoint_from_pc (gdbarch, sh_sh64_breakpoint_from_pc);
- set_gdbarch_deprecated_init_extra_frame_info (gdbarch, sh64_init_extra_frame_info);
- set_gdbarch_deprecated_frame_chain (gdbarch, sh64_frame_chain);
- set_gdbarch_deprecated_get_saved_register (gdbarch, sh64_get_saved_register);
- set_gdbarch_deprecated_extract_return_value (gdbarch, sh64_extract_return_value);
- set_gdbarch_deprecated_push_arguments (gdbarch, sh64_push_arguments);
- /*set_gdbarch_deprecated_store_struct_return (gdbarch, sh64_store_struct_return);*/
- set_gdbarch_deprecated_extract_struct_value_address (gdbarch, sh64_extract_struct_value_address);
- set_gdbarch_use_struct_convention (gdbarch, sh64_use_struct_convention);
- set_gdbarch_deprecated_pop_frame (gdbarch, sh64_pop_frame);
- set_gdbarch_elf_make_msymbol_special (gdbarch,
- sh64_elf_make_msymbol_special);
+ case bfd_mach_sh4_nofpu:
+ case bfd_mach_sh4a_nofpu:
+ case bfd_mach_sh4_nommu_nofpu:
+ case bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu:
+ set_gdbarch_register_name (gdbarch, sh_sh4_nofpu_register_name);
break;
+
+ case bfd_mach_sh4al_dsp:
+ set_gdbarch_register_name (gdbarch, sh_sh4al_dsp_register_name);
+ set_gdbarch_register_sim_regno (gdbarch, sh_dsp_register_sim_regno);
+ break;
+
default:
- sh_register_name = sh_generic_register_name;
- sh_show_regs = sh_generic_show_regs;
- sh_store_return_value = sh_default_store_return_value;
- sh_register_virtual_type = sh_default_register_virtual_type;
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, sh_nofp_frame_init_saved_regs);
- set_gdbarch_deprecated_register_raw_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_virtual_size (gdbarch, sh_default_register_raw_size);
- set_gdbarch_deprecated_register_byte (gdbarch, sh_default_register_byte);
+ set_gdbarch_register_name (gdbarch, sh_sh_register_name);
break;
}
- set_gdbarch_write_pc (gdbarch, generic_target_write_pc);
- set_gdbarch_deprecated_dummy_write_sp (gdbarch, deprecated_write_sp);
-
- set_gdbarch_register_name (gdbarch, sh_register_name);
- set_gdbarch_deprecated_register_virtual_type (gdbarch, sh_register_virtual_type);
-
- set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT);
- set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT);
- set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT);
- set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT);
- set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
- set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
-
- set_gdbarch_deprecated_call_dummy_words (gdbarch, sh_call_dummy_words);
- set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, sizeof (sh_call_dummy_words));
-
- set_gdbarch_deprecated_push_return_address (gdbarch, sh_push_return_address);
-
- set_gdbarch_deprecated_store_return_value (gdbarch, sh_store_return_value);
- set_gdbarch_skip_prologue (gdbarch, sh_skip_prologue);
- set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
- set_gdbarch_decr_pc_after_break (gdbarch, 0);
- set_gdbarch_function_start_offset (gdbarch, 0);
-
- set_gdbarch_frame_args_skip (gdbarch, 0);
- set_gdbarch_frameless_function_invocation (gdbarch, frameless_look_for_prologue);
- set_gdbarch_deprecated_frame_saved_pc (gdbarch, sh_frame_saved_pc);
- set_gdbarch_deprecated_saved_pc_after_call (gdbarch, sh_saved_pc_after_call);
- set_gdbarch_believe_pcc_promotion (gdbarch, 1);
-
/* Hook in ABI-specific overrides, if they have been registered. */
gdbarch_init_osabi (info, gdbarch);
+ dwarf2_append_unwinders (gdbarch);
+ frame_unwind_append_unwinder (gdbarch, &sh_stub_unwind);
+ frame_unwind_append_unwinder (gdbarch, &sh_frame_unwind);
+
return gdbarch;
}
static void
-sh_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file)
+show_sh_command (char *args, int from_tty)
{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-
- if (tdep == NULL)
- return;
+ help_list (showshcmdlist, "show sh ", all_commands, gdb_stdout);
+}
- /* FIXME: dump the rest of gdbarch_tdep. */
+static void
+set_sh_command (char *args, int from_tty)
+{
+ printf_unfiltered
+ ("\"set sh\" must be followed by an appropriate subcommand.\n");
+ help_list (setshcmdlist, "set sh ", all_commands, gdb_stdout);
}
-extern initialize_file_ftype _initialize_sh_tdep; /* -Wmissing-prototypes */
+extern initialize_file_ftype _initialize_sh_tdep; /* -Wmissing-prototypes */
void
_initialize_sh_tdep (void)
{
- struct cmd_list_element *c;
-
- gdbarch_register (bfd_arch_sh, sh_gdbarch_init, sh_dump_tdep);
+ gdbarch_register (bfd_arch_sh, sh_gdbarch_init, NULL);
- add_com ("regs", class_vars, sh_show_regs_command, "Print all registers");
+ add_prefix_cmd ("sh", no_class, set_sh_command, "SH specific commands.",
+ &setshcmdlist, "set sh ", 0, &setlist);
+ add_prefix_cmd ("sh", no_class, show_sh_command, "SH specific commands.",
+ &showshcmdlist, "show sh ", 0, &showlist);
+
+ add_setshow_enum_cmd ("calling-convention", class_vars, sh_cc_enum,
+ &sh_active_calling_convention,
+ _("Set calling convention used when calling target "
+ "functions from GDB."),
+ _("Show calling convention used when calling target "
+ "functions from GDB."),
+ _("gcc - Use GCC calling convention (default).\n"
+ "renesas - Enforce Renesas calling convention."),
+ NULL, NULL,
+ &setshcmdlist, &showshcmdlist);
}
projects / deliverable / binutils-gdb.git / blobdiff