/* Target-dependent code for the NEC V850 for GDB, the GNU debugger.
- Copyright 1996, 1998, 1999, 2000, 2001, 2002, 2003
- Free Software Foundation, Inc.
+
+ Copyright (C) 1996-2020 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/>. */
#include "defs.h"
#include "frame.h"
+#include "frame-base.h"
+#include "trad-frame.h"
+#include "frame-unwind.h"
+#include "dwarf2/frame.h"
+#include "gdbtypes.h"
#include "inferior.h"
-#include "target.h"
-#include "value.h"
-#include "bfd.h"
-#include "gdb_string.h"
#include "gdbcore.h"
-#include "symfile.h"
#include "arch-utils.h"
#include "regcache.h"
-#include "symtab.h"
-
-struct gdbarch_tdep
-{
- /* gdbarch target dependent data here. Currently unused for v850. */
-};
-
-/* Extra info which is saved in each frame_info. */
-struct frame_extra_info
-{
-};
-
-enum {
- E_R0_REGNUM,
- E_R1_REGNUM,
- E_R2_REGNUM, E_SAVE1_START_REGNUM = E_R2_REGNUM, E_SAVE1_END_REGNUM = E_R2_REGNUM,
- E_R3_REGNUM, E_SP_REGNUM = E_R3_REGNUM,
- E_R4_REGNUM,
- E_R5_REGNUM,
- E_R6_REGNUM, E_ARG0_REGNUM = E_R6_REGNUM,
- E_R7_REGNUM,
- E_R8_REGNUM,
- E_R9_REGNUM, E_ARGLAST_REGNUM = E_R9_REGNUM,
- E_R10_REGNUM, E_V0_REGNUM = E_R10_REGNUM,
- E_R11_REGNUM, E_V1_REGNUM = E_R11_REGNUM,
- E_R12_REGNUM,
- E_R13_REGNUM,
- E_R14_REGNUM,
- E_R15_REGNUM,
- E_R16_REGNUM,
- E_R17_REGNUM,
- E_R18_REGNUM,
- E_R19_REGNUM,
- E_R20_REGNUM, E_SAVE2_START_REGNUM = E_R20_REGNUM,
- E_R21_REGNUM,
- E_R22_REGNUM,
- E_R23_REGNUM,
- E_R24_REGNUM,
- E_R25_REGNUM,
- E_R26_REGNUM,
- E_R27_REGNUM,
- E_R28_REGNUM,
- E_R29_REGNUM, E_SAVE2_END_REGNUM = E_R29_REGNUM, E_FP_RAW_REGNUM = E_R29_REGNUM,
- E_R30_REGNUM, E_EP_REGNUM = E_R30_REGNUM,
- E_R31_REGNUM, E_SAVE3_START_REGNUM = E_R31_REGNUM, E_SAVE3_END_REGNUM = E_R31_REGNUM, E_RP_REGNUM = E_R31_REGNUM,
- E_R32_REGNUM, E_SR0_REGNUM = E_R32_REGNUM,
- E_R33_REGNUM,
- E_R34_REGNUM,
- E_R35_REGNUM,
- E_R36_REGNUM,
- E_R37_REGNUM, E_PS_REGNUM = E_R37_REGNUM,
- E_R38_REGNUM,
- E_R39_REGNUM,
- E_R40_REGNUM,
- E_R41_REGNUM,
- E_R42_REGNUM,
- E_R43_REGNUM,
- E_R44_REGNUM,
- E_R45_REGNUM,
- E_R46_REGNUM,
- E_R47_REGNUM,
- E_R48_REGNUM,
- E_R49_REGNUM,
- E_R50_REGNUM,
- E_R51_REGNUM,
- E_R52_REGNUM, E_CTBP_REGNUM = E_R52_REGNUM,
- E_R53_REGNUM,
- E_R54_REGNUM,
- E_R55_REGNUM,
- E_R56_REGNUM,
- E_R57_REGNUM,
- E_R58_REGNUM,
- E_R59_REGNUM,
- E_R60_REGNUM,
- E_R61_REGNUM,
- E_R62_REGNUM,
- E_R63_REGNUM,
- E_R64_REGNUM, E_PC_REGNUM = E_R64_REGNUM,
- E_R65_REGNUM, E_FP_REGNUM = E_R65_REGNUM,
- E_NUM_REGS
-};
+#include "dis-asm.h"
+#include "osabi.h"
+#include "elf-bfd.h"
+#include "elf/v850.h"
enum
-{
- v850_reg_size = 4
-};
+ {
+ /* General purpose registers. */
+ E_R0_REGNUM,
+ E_R1_REGNUM,
+ E_R2_REGNUM,
+ E_R3_REGNUM, E_SP_REGNUM = E_R3_REGNUM,
+ E_R4_REGNUM,
+ E_R5_REGNUM,
+ E_R6_REGNUM, E_ARG0_REGNUM = E_R6_REGNUM,
+ E_R7_REGNUM,
+ E_R8_REGNUM,
+ E_R9_REGNUM, E_ARGLAST_REGNUM = E_R9_REGNUM,
+ E_R10_REGNUM, E_V0_REGNUM = E_R10_REGNUM,
+ E_R11_REGNUM, E_V1_REGNUM = E_R11_REGNUM,
+ E_R12_REGNUM,
+ E_R13_REGNUM,
+ E_R14_REGNUM,
+ E_R15_REGNUM,
+ E_R16_REGNUM,
+ E_R17_REGNUM,
+ E_R18_REGNUM,
+ E_R19_REGNUM,
+ E_R20_REGNUM,
+ E_R21_REGNUM,
+ E_R22_REGNUM,
+ E_R23_REGNUM,
+ E_R24_REGNUM,
+ E_R25_REGNUM,
+ E_R26_REGNUM,
+ E_R27_REGNUM,
+ E_R28_REGNUM,
+ E_R29_REGNUM, E_FP_REGNUM = E_R29_REGNUM,
+ E_R30_REGNUM, E_EP_REGNUM = E_R30_REGNUM,
+ E_R31_REGNUM, E_LP_REGNUM = E_R31_REGNUM,
+
+ /* System registers - main banks. */
+ E_R32_REGNUM, E_SR0_REGNUM = E_R32_REGNUM,
+ E_R33_REGNUM,
+ E_R34_REGNUM,
+ E_R35_REGNUM,
+ E_R36_REGNUM,
+ E_R37_REGNUM, E_PS_REGNUM = E_R37_REGNUM,
+ E_R38_REGNUM,
+ E_R39_REGNUM,
+ E_R40_REGNUM,
+ E_R41_REGNUM,
+ E_R42_REGNUM,
+ E_R43_REGNUM,
+ E_R44_REGNUM,
+ E_R45_REGNUM,
+ E_R46_REGNUM,
+ E_R47_REGNUM,
+ E_R48_REGNUM,
+ E_R49_REGNUM,
+ E_R50_REGNUM,
+ E_R51_REGNUM,
+ E_R52_REGNUM, E_CTBP_REGNUM = E_R52_REGNUM,
+ E_R53_REGNUM,
+ E_R54_REGNUM,
+ E_R55_REGNUM,
+ E_R56_REGNUM,
+ E_R57_REGNUM,
+ E_R58_REGNUM,
+ E_R59_REGNUM,
+ E_R60_REGNUM,
+ E_R61_REGNUM,
+ E_R62_REGNUM,
+ E_R63_REGNUM,
+
+ /* PC. */
+ E_R64_REGNUM, E_PC_REGNUM = E_R64_REGNUM,
+ E_R65_REGNUM,
+ E_NUM_OF_V850_REGS,
+ E_NUM_OF_V850E_REGS = E_NUM_OF_V850_REGS,
+
+ /* System registers - MPV (PROT00) bank. */
+ E_R66_REGNUM = E_NUM_OF_V850_REGS,
+ E_R67_REGNUM,
+ E_R68_REGNUM,
+ E_R69_REGNUM,
+ E_R70_REGNUM,
+ E_R71_REGNUM,
+ E_R72_REGNUM,
+ E_R73_REGNUM,
+ E_R74_REGNUM,
+ E_R75_REGNUM,
+ E_R76_REGNUM,
+ E_R77_REGNUM,
+ E_R78_REGNUM,
+ E_R79_REGNUM,
+ E_R80_REGNUM,
+ E_R81_REGNUM,
+ E_R82_REGNUM,
+ E_R83_REGNUM,
+ E_R84_REGNUM,
+ E_R85_REGNUM,
+ E_R86_REGNUM,
+ E_R87_REGNUM,
+ E_R88_REGNUM,
+ E_R89_REGNUM,
+ E_R90_REGNUM,
+ E_R91_REGNUM,
+ E_R92_REGNUM,
+ E_R93_REGNUM,
+
+ /* System registers - MPU (PROT01) bank. */
+ E_R94_REGNUM,
+ E_R95_REGNUM,
+ E_R96_REGNUM,
+ E_R97_REGNUM,
+ E_R98_REGNUM,
+ E_R99_REGNUM,
+ E_R100_REGNUM,
+ E_R101_REGNUM,
+ E_R102_REGNUM,
+ E_R103_REGNUM,
+ E_R104_REGNUM,
+ E_R105_REGNUM,
+ E_R106_REGNUM,
+ E_R107_REGNUM,
+ E_R108_REGNUM,
+ E_R109_REGNUM,
+ E_R110_REGNUM,
+ E_R111_REGNUM,
+ E_R112_REGNUM,
+ E_R113_REGNUM,
+ E_R114_REGNUM,
+ E_R115_REGNUM,
+ E_R116_REGNUM,
+ E_R117_REGNUM,
+ E_R118_REGNUM,
+ E_R119_REGNUM,
+ E_R120_REGNUM,
+ E_R121_REGNUM,
+
+ /* FPU system registers. */
+ E_R122_REGNUM,
+ E_R123_REGNUM,
+ E_R124_REGNUM,
+ E_R125_REGNUM,
+ E_R126_REGNUM,
+ E_R127_REGNUM,
+ E_R128_REGNUM, E_FPSR_REGNUM = E_R128_REGNUM,
+ E_R129_REGNUM, E_FPEPC_REGNUM = E_R129_REGNUM,
+ E_R130_REGNUM, E_FPST_REGNUM = E_R130_REGNUM,
+ E_R131_REGNUM, E_FPCC_REGNUM = E_R131_REGNUM,
+ E_R132_REGNUM, E_FPCFG_REGNUM = E_R132_REGNUM,
+ E_R133_REGNUM,
+ E_R134_REGNUM,
+ E_R135_REGNUM,
+ E_R136_REGNUM,
+ E_R137_REGNUM,
+ E_R138_REGNUM,
+ E_R139_REGNUM,
+ E_R140_REGNUM,
+ E_R141_REGNUM,
+ E_R142_REGNUM,
+ E_R143_REGNUM,
+ E_R144_REGNUM,
+ E_R145_REGNUM,
+ E_R146_REGNUM,
+ E_R147_REGNUM,
+ E_R148_REGNUM,
+ E_R149_REGNUM,
+ E_NUM_OF_V850E2_REGS,
+
+ /* v850e3v5 system registers, selID 1 thru 7. */
+ E_SELID_1_R0_REGNUM = E_NUM_OF_V850E2_REGS,
+ E_SELID_1_R31_REGNUM = E_SELID_1_R0_REGNUM + 31,
+
+ E_SELID_2_R0_REGNUM,
+ E_SELID_2_R31_REGNUM = E_SELID_2_R0_REGNUM + 31,
+
+ E_SELID_3_R0_REGNUM,
+ E_SELID_3_R31_REGNUM = E_SELID_3_R0_REGNUM + 31,
+
+ E_SELID_4_R0_REGNUM,
+ E_SELID_4_R31_REGNUM = E_SELID_4_R0_REGNUM + 31,
+
+ E_SELID_5_R0_REGNUM,
+ E_SELID_5_R31_REGNUM = E_SELID_5_R0_REGNUM + 31,
+
+ E_SELID_6_R0_REGNUM,
+ E_SELID_6_R31_REGNUM = E_SELID_6_R0_REGNUM + 31,
+
+ E_SELID_7_R0_REGNUM,
+ E_SELID_7_R31_REGNUM = E_SELID_7_R0_REGNUM + 31,
+
+ /* v850e3v5 vector registers. */
+ E_VR0_REGNUM,
+ E_VR31_REGNUM = E_VR0_REGNUM + 31,
+
+ E_NUM_OF_V850E3V5_REGS,
+
+ /* Total number of possible registers. */
+ E_NUM_REGS = E_NUM_OF_V850E3V5_REGS
+ };
-/* Size of all registers as a whole. */
enum
{
- E_ALL_REGS_SIZE = (E_NUM_REGS) * v850_reg_size
+ v850_reg_size = 4
};
-/* Size of return datatype which fits into all return registers. */
+/* Size of return datatype which fits into all return registers. */
enum
{
E_MAX_RETTYPE_SIZE_IN_REGS = 2 * v850_reg_size
};
-static LONGEST call_dummy_nil[] = {0};
-
-static char *v850_generic_reg_names[] =
-{ "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",
- "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7",
- "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
- "sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23",
- "sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31",
- "pc", "fp"
-};
+/* When v850 support was added to GCC in the late nineties, the intention
+ was to follow the Green Hills ABI for v850. In fact, the authors of
+ that support at the time thought that they were doing so. As far as
+ I can tell, the calling conventions are correct, but the return value
+ conventions were not quite right. Over time, the return value code
+ in this file was modified to mostly reflect what GCC was actually
+ doing instead of to actually follow the Green Hills ABI as it did
+ when the code was first written.
-static char *v850e_reg_names[] =
-{
- "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",
- "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7",
- "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
- "ctpc", "ctpsw", "dbpc", "dbpsw", "ctbp", "sr21", "sr22", "sr23",
- "sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31",
- "pc", "fp"
-};
-
-char **v850_register_names = v850_generic_reg_names;
+ Renesas defined the RH850 ABI which they use in their compiler. It
+ is similar to the original Green Hills ABI with some minor
+ differences. */
-struct
- {
- char **regnames;
- int mach;
- }
-v850_processor_type_table[] =
+enum v850_abi
{
- {
- v850_generic_reg_names, bfd_mach_v850
- }
- ,
- {
- v850e_reg_names, bfd_mach_v850e
- }
- ,
- {
- NULL, 0
- }
+ V850_ABI_GCC,
+ V850_ABI_RH850
};
-/* Info gleaned from scanning a function's prologue. */
+/* Architecture specific data. */
-struct pifsr /* Info about one saved reg */
- {
- int framereg; /* Frame reg (SP or FP) */
- int offset; /* Offset from framereg */
- int cur_frameoffset; /* Current frameoffset */
- int reg; /* Saved register number */
- };
+struct gdbarch_tdep
+{
+ /* Fields from the ELF header. */
+ int e_flags;
+ int e_machine;
-struct prologue_info
- {
- int framereg;
- int frameoffset;
- int start_function;
- struct pifsr *pifsrs;
- };
+ /* Which ABI are we using? */
+ enum v850_abi abi;
+ int eight_byte_align;
+};
-static CORE_ADDR v850_scan_prologue (CORE_ADDR pc, struct prologue_info *fs);
+struct v850_frame_cache
+{
+ /* 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. */
+ struct trad_frame_saved_reg *saved_regs;
+};
-/* Function: v850_register_name
- Returns the name of the v850/v850e register N. */
+/* Info gleaned from scanning a function's prologue. */
+struct pifsr /* Info about one saved register. */
+{
+ int offset; /* Offset from sp or fp. */
+ int cur_frameoffset; /* Current frameoffset. */
+ int reg; /* Saved register number. */
+};
static const char *
-v850_register_name (int regnum)
+v850_register_name (struct gdbarch *gdbarch, int regnum)
{
- if (regnum < 0 || regnum >= E_NUM_REGS)
- internal_error (__FILE__, __LINE__,
- "v850_register_name: illegal register number %d",
- regnum);
- else
- return v850_register_names[regnum];
-
+ static const char *v850_reg_names[] =
+ { "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",
+ "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7",
+ "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
+ "sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23",
+ "sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31",
+ "pc", "fp"
+ };
+ if (regnum < 0 || regnum > E_NUM_OF_V850_REGS)
+ return NULL;
+ return v850_reg_names[regnum];
}
-/* Function: v850_register_byte
- Returns the byte position in the register cache for register N. */
-
-static int
-v850_register_byte (int regnum)
+static const char *
+v850e_register_name (struct gdbarch *gdbarch, int regnum)
{
- if (regnum < 0 || regnum >= E_NUM_REGS)
- internal_error (__FILE__, __LINE__,
- "v850_register_byte: illegal register number %d",
- regnum);
- else
- return regnum * v850_reg_size;
+ static const char *v850e_reg_names[] =
+ {
+ "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",
+ "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7",
+ "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
+ "ctpc", "ctpsw", "dbpc", "dbpsw", "ctbp", "sr21", "sr22", "sr23",
+ "sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31",
+ "pc", "fp"
+ };
+ if (regnum < 0 || regnum > E_NUM_OF_V850E_REGS)
+ return NULL;
+ return v850e_reg_names[regnum];
}
-/* Function: v850_register_raw_size
- Returns the number of bytes occupied by the register on the target. */
-
-static int
-v850_register_raw_size (int regnum)
+static const char *
+v850e2_register_name (struct gdbarch *gdbarch, int regnum)
{
- if (regnum < 0 || regnum >= E_NUM_REGS)
- internal_error (__FILE__, __LINE__,
- "v850_register_raw_size: illegal register number %d",
- regnum);
- /* Only the PC has 4 Byte, all other registers 2 Byte. */
- else
- return v850_reg_size;
+ static const char *v850e2_reg_names[] =
+ {
+ /* General purpose registers. */
+ "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",
+
+ /* System registers - main banks. */
+ "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "pid", "cfg",
+ "", "", "", "sccfg", "scbp", "eiic", "feic", "dbic",
+ "ctpc", "ctpsw", "dbpc", "dbpsw", "ctbp", "dir", "", "",
+ "", "", "", "", "eiwr", "fewr", "dbwr", "bsel",
+
+
+ /* PC. */
+ "pc", "",
+
+ /* System registers - MPV (PROT00) bank. */
+ "vsecr", "vstid", "vsadr", "", "vmecr", "vmtid", "vmadr", "",
+ "vpecr", "vptid", "vpadr", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "mca", "mcs", "mcc", "mcr",
+
+ /* System registers - MPU (PROT01) bank. */
+ "mpm", "mpc", "tid", "", "", "", "ipa0l", "ipa0u",
+ "ipa1l", "ipa1u", "ipa2l", "ipa2u", "ipa3l", "ipa3u", "ipa4l", "ipa4u",
+ "dpa0l", "dpa0u", "dpa1l", "dpa1u", "dpa2l", "dpa2u", "dpa3l", "dpa3u",
+ "dpa4l", "dpa4u", "dpa5l", "dpa5u",
+
+ /* FPU system registers. */
+ "", "", "", "", "", "", "fpsr", "fpepc",
+ "fpst", "fpcc", "fpcfg", "fpec", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "fpspc"
+ };
+ if (regnum < 0 || regnum >= E_NUM_OF_V850E2_REGS)
+ return NULL;
+ return v850e2_reg_names[regnum];
}
-/* Function: v850_register_virtual_size
- Returns the number of bytes occupied by the register as represented
- internally by gdb. */
+/* Implement the "register_name" gdbarch method for v850e3v5. */
-static int
-v850_register_virtual_size (int regnum)
+static const char *
+v850e3v5_register_name (struct gdbarch *gdbarch, int regnum)
{
- return v850_register_raw_size (regnum);
+ static const char *v850e3v5_reg_names[] =
+ {
+ /* General purpose registers. */
+ "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",
+
+ /* selID 0, not including FPU registers. The FPU registers are
+ listed later on. */
+ "eipc", "eipsw", "fepc", "fepsw",
+ "", "psw", "" /* fpsr */, "" /* fpepc */,
+ "" /* fpst */, "" /* fpcc */, "" /* fpcfg */, "" /* fpec */,
+ "sesr", "eiic", "feic", "",
+ "ctpc", "ctpsw", "", "", "ctbp", "", "", "",
+ "", "", "", "", "eiwr", "fewr", "", "bsel",
+
+
+ /* PC. */
+ "pc", "",
+
+ /* v850e2 MPV bank. */
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "",
+
+ /* Skip v850e2 MPU bank. It's tempting to reuse these, but we need
+ 32 entries for this bank. */
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "",
+
+ /* FPU system registers. These are actually in selID 0, but
+ are placed here to preserve register numbering compatibility
+ with previous architectures. */
+ "", "", "", "", "", "", "fpsr", "fpepc",
+ "fpst", "fpcc", "fpcfg", "fpec", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "",
+
+ /* selID 1. */
+ "mcfg0", "mcfg1", "rbase", "ebase", "intbp", "mctl", "pid", "fpipr",
+ "", "", "tcsel", "sccfg", "scbp", "hvccfg", "hvcbp", "vsel",
+ "vmprt0", "vmprt1", "vmprt2", "", "", "", "", "vmscctl",
+ "vmsctbl0", "vmsctbl1", "vmsctbl2", "vmsctbl3", "", "", "", "",
+
+ /* selID 2. */
+ "htcfg0", "", "", "", "", "htctl", "mea", "asid",
+ "mei", "ispr", "pmr", "icsr", "intcfg", "", "", "",
+ "tlbsch", "", "", "", "", "", "", "htscctl",
+ "htsctbl0", "htsctbl1", "htsctbl2", "htsctbl3",
+ "htsctbl4", "htsctbl5", "htsctbl6", "htsctbl7",
+
+ /* selID 3. */
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+
+ /* selID 4. */
+ "tlbidx", "", "", "", "telo0", "telo1", "tehi0", "tehi1",
+ "", "", "tlbcfg", "", "bwerrl", "bwerrh", "brerrl", "brerrh",
+ "ictagl", "ictagh", "icdatl", "icdath",
+ "dctagl", "dctagh", "dcdatl", "dcdath",
+ "icctrl", "dcctrl", "iccfg", "dccfg", "icerr", "dcerr", "", "",
+
+ /* selID 5. */
+ "mpm", "mprc", "", "", "mpbrgn", "mptrgn", "", "",
+ "mca", "mcs", "mcc", "mcr", "", "", "", "",
+ "", "", "", "", "mpprt0", "mpprt1", "mpprt2", "",
+ "", "", "", "", "", "", "", "",
+
+ /* selID 6. */
+ "mpla0", "mpua0", "mpat0", "", "mpla1", "mpua1", "mpat1", "",
+ "mpla2", "mpua2", "mpat2", "", "mpla3", "mpua3", "mpat3", "",
+ "mpla4", "mpua4", "mpat4", "", "mpla5", "mpua5", "mpat5", "",
+ "mpla6", "mpua6", "mpat6", "", "mpla7", "mpua7", "mpat7", "",
+
+ /* selID 7. */
+ "mpla8", "mpua8", "mpat8", "", "mpla9", "mpua9", "mpat9", "",
+ "mpla10", "mpua10", "mpat10", "", "mpla11", "mpua11", "mpat11", "",
+ "mpla12", "mpua12", "mpat12", "", "mpla13", "mpua13", "mpat13", "",
+ "mpla14", "mpua14", "mpat14", "", "mpla15", "mpua15", "mpat15", "",
+
+ /* Vector Registers */
+ "vr0", "vr1", "vr2", "vr3", "vr4", "vr5", "vr6", "vr7",
+ "vr8", "vr9", "vr10", "vr11", "vr12", "vr13", "vr14", "vr15",
+ "vr16", "vr17", "vr18", "vr19", "vr20", "vr21", "vr22", "vr23",
+ "vr24", "vr25", "vr26", "vr27", "vr28", "vr29", "vr30", "vr31",
+ };
+
+ if (regnum < 0 || regnum >= E_NUM_OF_V850E3V5_REGS)
+ return NULL;
+ return v850e3v5_reg_names[regnum];
}
-/* Function: v850_reg_virtual_type
- Returns the default type for register N. */
+/* Returns the default type for register N. */
static struct type *
-v850_reg_virtual_type (int regnum)
+v850_register_type (struct gdbarch *gdbarch, int regnum)
{
- if (regnum < 0 || regnum >= E_NUM_REGS)
- internal_error (__FILE__, __LINE__,
- "v850_register_virtual_type: illegal register number %d",
- regnum);
- else if (regnum == E_PC_REGNUM)
- return builtin_type_uint32;
- else
- return builtin_type_int32;
+ if (regnum == E_PC_REGNUM)
+ return builtin_type (gdbarch)->builtin_func_ptr;
+ else if (E_VR0_REGNUM <= regnum && regnum <= E_VR31_REGNUM)
+ return builtin_type (gdbarch)->builtin_uint64;
+ return builtin_type (gdbarch)->builtin_int32;
}
static int
v850_type_is_scalar (struct type *t)
{
- return (TYPE_CODE (t) != TYPE_CODE_STRUCT
- && TYPE_CODE (t) != TYPE_CODE_UNION
- && TYPE_CODE (t) != TYPE_CODE_ARRAY);
+ return (t->code () != TYPE_CODE_STRUCT
+ && t->code () != TYPE_CODE_UNION
+ && t->code () != TYPE_CODE_ARRAY);
}
/* Should call_function allocate stack space for a struct return? */
+
static int
-v850_use_struct_convention (int gcc_p, struct type *type)
+v850_use_struct_convention (struct gdbarch *gdbarch, struct type *type)
{
- /* According to ABI:
- * return TYPE_LENGTH (type) > 8);
- */
-
- /* Current implementation in gcc: */
-
int i;
struct type *fld_type, *tgt_type;
- /* 1. The value is greater than 8 bytes -> returned by copying */
+ if (gdbarch_tdep (gdbarch)->abi == V850_ABI_RH850)
+ {
+ if (v850_type_is_scalar (type) && TYPE_LENGTH(type) <= 8)
+ return 0;
+
+ /* Structs are never returned in registers for this ABI. */
+ return 1;
+ }
+ /* 1. The value is greater than 8 bytes -> returned by copying. */
if (TYPE_LENGTH (type) > 8)
return 1;
- /* 2. The value is a single basic type -> returned in register */
+ /* 2. The value is a single basic type -> returned in register. */
if (v850_type_is_scalar (type))
return 0;
- /* The value is a structure or union with a single element
- * and that element is either a single basic type or an array of
- * a single basic type whoes size is greater than or equal to 4
- * -> returned in register */
- if ((TYPE_CODE (type) == TYPE_CODE_STRUCT
- || TYPE_CODE (type) == TYPE_CODE_UNION)
- && TYPE_NFIELDS (type) == 1)
+ /* The value is a structure or union with a single element and that
+ element is either a single basic type or an array of a single basic
+ type whose size is greater than or equal to 4 -> returned in register. */
+ if ((type->code () == TYPE_CODE_STRUCT
+ || type->code () == TYPE_CODE_UNION)
+ && type->num_fields () == 1)
{
fld_type = TYPE_FIELD_TYPE (type, 0);
if (v850_type_is_scalar (fld_type) && TYPE_LENGTH (fld_type) >= 4)
return 0;
- if (TYPE_CODE (fld_type) == TYPE_CODE_ARRAY)
+ if (fld_type->code () == TYPE_CODE_ARRAY)
{
tgt_type = TYPE_TARGET_TYPE (fld_type);
if (v850_type_is_scalar (tgt_type) && TYPE_LENGTH (tgt_type) >= 4)
}
}
- /* The value is a structure whose first element is an integer or
- * a float, and which contains no arrays of more than two elements
- * -> returned in register */
- if (TYPE_CODE (type) == TYPE_CODE_STRUCT
+ /* The value is a structure whose first element is an integer or a float,
+ and which contains no arrays of more than two elements -> returned in
+ register. */
+ if (type->code () == TYPE_CODE_STRUCT
&& v850_type_is_scalar (TYPE_FIELD_TYPE (type, 0))
&& TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) == 4)
{
- for (i = 1; i < TYPE_NFIELDS (type); ++i)
+ for (i = 1; i < type->num_fields (); ++i)
{
fld_type = TYPE_FIELD_TYPE (type, 0);
- if (TYPE_CODE (fld_type) == TYPE_CODE_ARRAY)
+ if (fld_type->code () == TYPE_CODE_ARRAY)
{
tgt_type = TYPE_TARGET_TYPE (fld_type);
- if (TYPE_LENGTH (fld_type) >= 0 && TYPE_LENGTH (tgt_type) >= 0
+ if (TYPE_LENGTH (tgt_type) > 0
&& TYPE_LENGTH (fld_type) / TYPE_LENGTH (tgt_type) > 2)
return 1;
}
}
/* The value is a union which contains at least one field which
- * would be returned in registers according to these rules
- * -> returned in register */
- if (TYPE_CODE (type) == TYPE_CODE_UNION)
+ would be returned in registers according to these rules ->
+ returned in register. */
+ if (type->code () == TYPE_CODE_UNION)
{
- for (i = 0; i < TYPE_NFIELDS (type); ++i)
+ for (i = 0; i < type->num_fields (); ++i)
{
fld_type = TYPE_FIELD_TYPE (type, 0);
- if (!v850_use_struct_convention (0, fld_type))
+ if (!v850_use_struct_convention (gdbarch, fld_type))
return 0;
}
}
return 1;
}
-\f
+/* Structure for mapping bits in register lists to register numbers. */
-/* Structure for mapping bits in register lists to register numbers. */
struct reg_list
{
long mask;
int regno;
};
-/* Helper function for v850_scan_prologue to handle prepare instruction. */
+/* Helper function for v850_scan_prologue to handle prepare instruction. */
static void
-handle_prepare (int insn, int insn2, CORE_ADDR * current_pc_ptr,
- struct prologue_info *pi, struct pifsr **pifsr_ptr)
+v850_handle_prepare (int insn, int insn2, CORE_ADDR * current_pc_ptr,
+ struct v850_frame_cache *pi, struct pifsr **pifsr_ptr)
{
CORE_ADDR current_pc = *current_pc_ptr;
struct pifsr *pifsr = *pifsr_ptr;
};
int i;
- if ((next & 0x1f) == 0x0b) /* skip imm16 argument */
+ if ((next & 0x1f) == 0x0b) /* skip imm16 argument */
current_pc += 2;
else if ((next & 0x1f) == 0x13) /* skip imm16 argument */
current_pc += 2;
else if ((next & 0x1f) == 0x1b) /* skip imm32 argument */
current_pc += 4;
- /* Calculate the total size of the saved registers, and add it
- it to the immediate value used to adjust SP. */
+ /* Calculate the total size of the saved registers, and add it to the
+ immediate value used to adjust SP. */
for (i = 0; reg_table[i].mask != 0; i++)
if (list12 & reg_table[i].mask)
- offset += v850_register_raw_size (reg_table[i].regno);
- pi->frameoffset -= offset;
+ offset += v850_reg_size;
+ pi->sp_offset -= offset;
- /* Calculate the offsets of the registers relative to the value
- the SP will have after the registers have been pushed and the
- imm5 value has been subtracted from it. */
+ /* Calculate the offsets of the registers relative to the value the SP
+ will have after the registers have been pushed and the imm5 value has
+ been subtracted from it. */
if (pifsr)
{
for (i = 0; reg_table[i].mask != 0; i++)
if (list12 & reg_table[i].mask)
{
int reg = reg_table[i].regno;
- offset -= v850_register_raw_size (reg);
+ offset -= v850_reg_size;
pifsr->reg = reg;
pifsr->offset = offset;
- pifsr->cur_frameoffset = pi->frameoffset;
-#ifdef DEBUG
- printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset);
-#endif
+ pifsr->cur_frameoffset = pi->sp_offset;
pifsr++;
}
}
}
-#ifdef DEBUG
- printf_filtered ("\tfound ctret after regsave func");
-#endif
- /* Set result parameters. */
+ /* Set result parameters. */
*current_pc_ptr = current_pc;
*pifsr_ptr = pifsr;
}
/* Helper function for v850_scan_prologue to handle pushm/pushl instructions.
- FIXME: the SR bit of the register list is not supported; must check
- that the compiler does not ever generate this bit. */
+ The SR bit of the register list is not supported. gcc does not generate
+ this bit. */
static void
-handle_pushm (int insn, int insn2, struct prologue_info *pi,
- struct pifsr **pifsr_ptr)
+v850_handle_pushm (int insn, int insn2, struct v850_frame_cache *pi,
+ struct pifsr **pifsr_ptr)
{
struct pifsr *pifsr = *pifsr_ptr;
long list12 = ((insn & 0x0f) << 16) + (insn2 & 0xfff0);
struct reg_list *reg_table;
int i;
- /* Is this a pushml or a pushmh? */
+ /* Is this a pushml or a pushmh? */
if ((insn2 & 7) == 1)
reg_table = pushml_reg_table;
else
reg_table = pushmh_reg_table;
- /* Calculate the total size of the saved registers, and add it
- it to the immediate value used to adjust SP. */
+ /* Calculate the total size of the saved registers, and add it to the
+ immediate value used to adjust SP. */
for (i = 0; reg_table[i].mask != 0; i++)
if (list12 & reg_table[i].mask)
- offset += v850_register_raw_size (reg_table[i].regno);
- pi->frameoffset -= offset;
+ offset += v850_reg_size;
+ pi->sp_offset -= offset;
- /* Calculate the offsets of the registers relative to the value
- the SP will have after the registers have been pushed and the
- imm5 value is subtracted from it. */
+ /* Calculate the offsets of the registers relative to the value the SP
+ will have after the registers have been pushed and the imm5 value is
+ subtracted from it. */
if (pifsr)
{
for (i = 0; reg_table[i].mask != 0; i++)
if (list12 & reg_table[i].mask)
{
int reg = reg_table[i].regno;
- offset -= v850_register_raw_size (reg);
+ offset -= v850_reg_size;
pifsr->reg = reg;
pifsr->offset = offset;
- pifsr->cur_frameoffset = pi->frameoffset;
-#ifdef DEBUG
- printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset);
-#endif
+ pifsr->cur_frameoffset = pi->sp_offset;
pifsr++;
}
}
}
-#ifdef DEBUG
- printf_filtered ("\tfound ctret after regsave func");
-#endif
- /* Set result parameters. */
+ /* Set result parameters. */
*pifsr_ptr = pifsr;
}
-\f
+/* Helper function to evaluate if register is one of the "save" registers.
+ This allows to simplify conditionals in v850_analyze_prologue a lot. */
+static int
+v850_is_save_register (int reg)
+{
+ /* The caller-save registers are R2, R20 - R29 and R31. All other
+ registers are either special purpose (PC, SP), argument registers,
+ or just considered free for use in the caller. */
+ return reg == E_R2_REGNUM
+ || (reg >= E_R20_REGNUM && reg <= E_R29_REGNUM)
+ || reg == E_R31_REGNUM;
+}
-/* Function: scan_prologue
- Scan the prologue of the function that contains PC, and record what
+/* Scan the prologue of the function that contains PC, and record what
we find in PI. Returns the pc after the prologue. Note that the
addresses saved in frame->saved_regs are just frame relative (negative
offsets from the frame pointer). This is because we don't know the
prologue. */
static CORE_ADDR
-v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi)
+v850_analyze_prologue (struct gdbarch *gdbarch,
+ CORE_ADDR func_addr, CORE_ADDR pc,
+ struct v850_frame_cache *pi, ULONGEST ctbp)
{
- CORE_ADDR func_addr, prologue_end, current_pc;
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ CORE_ADDR prologue_end, current_pc;
+ struct pifsr pifsrs[E_NUM_REGS + 1];
struct pifsr *pifsr, *pifsr_tmp;
- int fp_used;
int ep_used;
int reg;
CORE_ADDR save_pc, save_end;
int regsave_func_p;
int r12_tmp;
- /* First, figure out the bounds of the prologue so that we can limit the
- search to something reasonable. */
+ memset (&pifsrs, 0, sizeof pifsrs);
+ pifsr = &pifsrs[0];
- if (find_pc_partial_function (pc, NULL, &func_addr, NULL))
- {
- struct symtab_and_line sal;
-
- sal = find_pc_line (func_addr, 0);
-
- if (func_addr == entry_point_address ())
- pi->start_function = 1;
- else
- pi->start_function = 0;
-
-#if 0
- if (sal.line == 0)
- prologue_end = pc;
- else
- prologue_end = sal.end;
-#else
- prologue_end = pc;
-#endif
- }
- else
- { /* We're in the boondocks */
- func_addr = pc - 100;
- prologue_end = pc;
- }
-
- prologue_end = min (prologue_end, pc);
+ prologue_end = pc;
/* Now, search the prologue looking for instructions that setup fp, save
rp, adjust sp and such. We also record the frame offset of any saved
- registers. */
+ registers. */
- pi->frameoffset = 0;
- pi->framereg = E_SP_REGNUM;
- fp_used = 0;
+ pi->sp_offset = 0;
+ pi->uses_fp = 0;
ep_used = 0;
- pifsr = pi->pifsrs;
regsave_func_p = 0;
save_pc = 0;
save_end = 0;
r12_tmp = 0;
-#ifdef DEBUG
- printf_filtered ("Current_pc = 0x%.8lx, prologue_end = 0x%.8lx\n",
- (long) func_addr, (long) prologue_end);
-#endif
-
for (current_pc = func_addr; current_pc < prologue_end;)
{
int insn;
int insn2 = -1; /* dummy value */
-#ifdef DEBUG
- fprintf_filtered (gdb_stdlog, "0x%.8lx ", (long) current_pc);
- gdb_print_insn (current_pc, gdb_stdlog);
-#endif
-
- insn = read_memory_unsigned_integer (current_pc, 2);
+ insn = read_memory_integer (current_pc, 2, byte_order);
current_pc += 2;
- if ((insn & 0x0780) >= 0x0600) /* Four byte instruction? */
+ if ((insn & 0x0780) >= 0x0600) /* Four byte instruction? */
{
- insn2 = read_memory_unsigned_integer (current_pc, 2);
+ insn2 = read_memory_integer (current_pc, 2, byte_order);
current_pc += 2;
}
current_pc += disp - 4;
prologue_end = (current_pc
+ (2 * 3) /* moves to/from ep */
- + 4 /* addi <const>,sp,sp */
- + 2 /* jmp [r10] */
+ + 4 /* addi <const>,sp,sp */
+ + 2 /* jmp [r10] */
+ (2 * 12) /* sst.w to save r2, r20-r29, r31 */
+ 20); /* slop area */
-
-#ifdef DEBUG
- printf_filtered ("\tfound jarl <func>,r10, disp = %ld, low_disp = %ld, new pc = 0x%.8lx\n",
- disp, low_disp, (long) current_pc + 2);
-#endif
- continue;
}
else if ((insn & 0xffc0) == 0x0200 && !regsave_func_p)
{ /* callt <imm6> */
- long ctbp = read_register (E_CTBP_REGNUM);
long adr = ctbp + ((insn & 0x3f) << 1);
save_pc = current_pc;
save_end = prologue_end;
regsave_func_p = 1;
- current_pc = ctbp + (read_memory_unsigned_integer (adr, 2) & 0xffff);
+ current_pc = ctbp + (read_memory_unsigned_integer (adr, 2, byte_order)
+ & 0xffff);
prologue_end = (current_pc
+ (2 * 3) /* prepare list2,imm5,sp/imm */
- + 4 /* ctret */
+ + 4 /* ctret */
+ 20); /* slop area */
-
-#ifdef DEBUG
- printf_filtered ("\tfound callt, ctbp = 0x%.8lx, adr = %.8lx, new pc = 0x%.8lx\n",
- ctbp, adr, (long) current_pc);
-#endif
continue;
}
else if ((insn & 0xffc0) == 0x0780) /* prepare list2,imm5 */
{
- handle_prepare (insn, insn2, ¤t_pc, pi, &pifsr);
+ v850_handle_prepare (insn, insn2, ¤t_pc, pi, &pifsr);
continue;
}
else if (insn == 0x07e0 && regsave_func_p && insn2 == 0x0144)
- { /* ctret after processing register save function */
+ { /* ctret after processing register save. */
current_pc = save_pc;
prologue_end = save_end;
regsave_func_p = 0;
-#ifdef DEBUG
- printf_filtered ("\tfound ctret after regsave func");
-#endif
continue;
}
else if ((insn & 0xfff0) == 0x07e0 && (insn2 & 5) == 1)
{ /* pushml, pushmh */
- handle_pushm (insn, insn2, pi, &pifsr);
+ v850_handle_pushm (insn, insn2, pi, &pifsr);
continue;
}
else if ((insn & 0xffe0) == 0x0060 && regsave_func_p)
- { /* jmp after processing register save function */
+ { /* jmp after processing register save. */
current_pc = save_pc;
prologue_end = save_end;
regsave_func_p = 0;
-#ifdef DEBUG
- printf_filtered ("\tfound jmp after regsave func");
-#endif
continue;
}
else if ((insn & 0x07c0) == 0x0780 /* jarl or jr */
|| (insn & 0xffe0) == 0x0060 /* jmp */
|| (insn & 0x0780) == 0x0580) /* branch */
{
-#ifdef DEBUG
- printf_filtered ("\n");
-#endif
- break; /* Ran into end of prologue */
+ break; /* Ran into end of prologue. */
}
- else if ((insn & 0xffe0) == ((E_SP_REGNUM << 11) | 0x0240)) /* add <imm>,sp */
- pi->frameoffset += ((insn & 0x1f) ^ 0x10) - 0x10;
- else if (insn == ((E_SP_REGNUM << 11) | 0x0600 | E_SP_REGNUM)) /* addi <imm>,sp,sp */
- pi->frameoffset += insn2;
- else if (insn == ((E_FP_RAW_REGNUM << 11) | 0x0000 | E_SP_REGNUM)) /* mov sp,fp */
- {
- fp_used = 1;
- pi->framereg = E_FP_RAW_REGNUM;
- }
-
- else if (insn == ((E_R12_REGNUM << 11) | 0x0640 | E_R0_REGNUM)) /* movhi hi(const),r0,r12 */
+ else if ((insn & 0xffe0) == ((E_SP_REGNUM << 11) | 0x0240))
+ /* add <imm>,sp */
+ pi->sp_offset += ((insn & 0x1f) ^ 0x10) - 0x10;
+ else if (insn == ((E_SP_REGNUM << 11) | 0x0600 | E_SP_REGNUM))
+ /* addi <imm>,sp,sp */
+ pi->sp_offset += insn2;
+ else if (insn == ((E_FP_REGNUM << 11) | 0x0000 | E_SP_REGNUM))
+ /* mov sp,fp */
+ pi->uses_fp = 1;
+ else if (insn == ((E_R12_REGNUM << 11) | 0x0640 | E_R0_REGNUM))
+ /* movhi hi(const),r0,r12 */
r12_tmp = insn2 << 16;
- else if (insn == ((E_R12_REGNUM << 11) | 0x0620 | E_R12_REGNUM)) /* movea lo(const),r12,r12 */
+ else if (insn == ((E_R12_REGNUM << 11) | 0x0620 | E_R12_REGNUM))
+ /* movea lo(const),r12,r12 */
r12_tmp += insn2;
- else if (insn == ((E_SP_REGNUM << 11) | 0x01c0 | E_R12_REGNUM) && r12_tmp) /* add r12,sp */
- pi->frameoffset = r12_tmp;
- else if (insn == ((E_EP_REGNUM << 11) | 0x0000 | E_SP_REGNUM)) /* mov sp,ep */
+ else if (insn == ((E_SP_REGNUM << 11) | 0x01c0 | E_R12_REGNUM) && r12_tmp)
+ /* add r12,sp */
+ pi->sp_offset += r12_tmp;
+ else if (insn == ((E_EP_REGNUM << 11) | 0x0000 | E_SP_REGNUM))
+ /* mov sp,ep */
ep_used = 1;
- else if (insn == ((E_EP_REGNUM << 11) | 0x0000 | E_R1_REGNUM)) /* mov r1,ep */
+ else if (insn == ((E_EP_REGNUM << 11) | 0x0000 | E_R1_REGNUM))
+ /* mov r1,ep */
ep_used = 0;
- else if (((insn & 0x07ff) == (0x0760 | E_SP_REGNUM) /* st.w <reg>,<offset>[sp] */
- || (fp_used
- && (insn & 0x07ff) == (0x0760 | E_FP_RAW_REGNUM))) /* st.w <reg>,<offset>[fp] */
+ else if (((insn & 0x07ff) == (0x0760 | E_SP_REGNUM)
+ || (pi->uses_fp
+ && (insn & 0x07ff) == (0x0760 | E_FP_REGNUM)))
&& pifsr
- && (((reg = (insn >> 11) & 0x1f) >= E_SAVE1_START_REGNUM && reg <= E_SAVE1_END_REGNUM)
- || (reg >= E_SAVE2_START_REGNUM && reg <= E_SAVE2_END_REGNUM)
- || (reg >= E_SAVE3_START_REGNUM && reg <= E_SAVE3_END_REGNUM)))
+ && v850_is_save_register (reg = (insn >> 11) & 0x1f))
{
+ /* st.w <reg>,<offset>[sp] or st.w <reg>,<offset>[fp] */
pifsr->reg = reg;
pifsr->offset = insn2 & ~1;
- pifsr->cur_frameoffset = pi->frameoffset;
-#ifdef DEBUG
- printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset);
-#endif
+ pifsr->cur_frameoffset = pi->sp_offset;
pifsr++;
}
-
- else if (ep_used /* sst.w <reg>,<offset>[ep] */
+ else if (ep_used
&& ((insn & 0x0781) == 0x0501)
&& pifsr
- && (((reg = (insn >> 11) & 0x1f) >= E_SAVE1_START_REGNUM && reg <= E_SAVE1_END_REGNUM)
- || (reg >= E_SAVE2_START_REGNUM && reg <= E_SAVE2_END_REGNUM)
- || (reg >= E_SAVE3_START_REGNUM && reg <= E_SAVE3_END_REGNUM)))
+ && v850_is_save_register (reg = (insn >> 11) & 0x1f))
{
+ /* sst.w <reg>,<offset>[ep] */
pifsr->reg = reg;
pifsr->offset = (insn & 0x007e) << 1;
- pifsr->cur_frameoffset = pi->frameoffset;
-#ifdef DEBUG
- printf_filtered ("\tSaved register r%d, offset %d", reg, pifsr->offset);
-#endif
+ pifsr->cur_frameoffset = pi->sp_offset;
pifsr++;
}
-
-#ifdef DEBUG
- printf_filtered ("\n");
-#endif
}
- if (pifsr)
- pifsr->framereg = 0; /* Tie off last entry */
-
- /* Fix up any offsets to the final offset. If a frame pointer was created, use it
- instead of the stack pointer. */
- for (pifsr_tmp = pi->pifsrs; pifsr_tmp && pifsr_tmp != pifsr; pifsr_tmp++)
+ /* Fix up any offsets to the final offset. If a frame pointer was created,
+ use it instead of the stack pointer. */
+ for (pifsr_tmp = pifsrs; pifsr_tmp != pifsr; pifsr_tmp++)
{
- pifsr_tmp->offset -= pi->frameoffset - pifsr_tmp->cur_frameoffset;
- pifsr_tmp->framereg = pi->framereg;
-
-#ifdef DEBUG
- printf_filtered ("Saved register r%d, offset = %d, framereg = r%d\n",
- pifsr_tmp->reg, pifsr_tmp->offset, pifsr_tmp->framereg);
-#endif
+ pifsr_tmp->offset -= pi->sp_offset - pifsr_tmp->cur_frameoffset;
+ pi->saved_regs[pifsr_tmp->reg].addr = pifsr_tmp->offset;
}
-#ifdef DEBUG
- printf_filtered ("Framereg = r%d, frameoffset = %d\n", pi->framereg, pi->frameoffset);
-#endif
-
return current_pc;
}
-/* Function: find_callers_reg
- 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. */
+/* Return the address of the first code past the prologue of the function. */
-CORE_ADDR
-v850_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)))
- return deprecated_read_register_dummy (get_frame_pc (fi),
- get_frame_base (fi), regnum);
- else if (get_frame_saved_regs (fi)[regnum] != 0)
- return read_memory_unsigned_integer (get_frame_saved_regs (fi)[regnum],
- v850_register_raw_size (regnum));
-
- return read_register (regnum);
-}
-
-/* Function: frame_chain
- Figure out the frame prior to FI. Unfortunately, this involves
- scanning the prologue of the caller, which will also be done
- shortly by v850_init_extra_frame_info. For the dummy frame, we
- just return the stack pointer that was in use at the time the
- function call was made. */
-
-CORE_ADDR
-v850_frame_chain (struct frame_info *fi)
-{
- struct prologue_info pi;
- CORE_ADDR callers_pc, fp;
-
- /* First, find out who called us */
- callers_pc = DEPRECATED_FRAME_SAVED_PC (fi);
- /* If caller is a call-dummy, then our FP bears no relation to his FP! */
- fp = v850_find_callers_reg (fi, E_FP_RAW_REGNUM);
- if (DEPRECATED_PC_IN_CALL_DUMMY (callers_pc, fp, fp))
- return fp; /* caller is call-dummy: return oldest value of FP */
-
- /* Caller is NOT a call-dummy, so everything else should just work.
- Even if THIS frame is a call-dummy! */
- pi.pifsrs = NULL;
-
- v850_scan_prologue (callers_pc, &pi);
-
- if (pi.start_function)
- return 0; /* Don't chain beyond the start function */
-
- if (pi.framereg == E_FP_RAW_REGNUM)
- return v850_find_callers_reg (fi, pi.framereg);
-
- return get_frame_base (fi) - pi.frameoffset;
-}
-
-/* Function: skip_prologue
- Return the address of the first code past the prologue of the function. */
-
-CORE_ADDR
-v850_skip_prologue (CORE_ADDR pc)
+static CORE_ADDR
+v850_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
{
CORE_ADDR func_addr, func_end;
- /* See what the symbol table says */
+ /* See what the symbol table says. */
if (find_pc_partial_function (pc, NULL, &func_addr, &func_end))
{
struct symtab_and_line sal;
sal = find_pc_line (func_addr, 0);
-
if (sal.line != 0 && sal.end < func_end)
return sal.end;
- else
- /* Either there's no line info, or the line after the prologue is after
- the end of the function. In this case, there probably isn't a
- prologue. */
- return pc;
+
+ /* Either there's no line info, or the line after the prologue is after
+ the end of the function. In this case, there probably isn't a
+ prologue. */
+ return pc;
}
-/* We can't find the start of this function, so there's nothing we can do. */
+ /* We can't find the start of this function, so there's nothing we
+ can do. */
return pc;
}
-/* Function: pop_frame
- This routine gets called when either the user uses the `return'
- command, or the call dummy breakpoint gets hit. */
+/* Return 1 if the data structure has any 8-byte fields that'll require
+ the entire data structure to be aligned. Otherwise, return 0. */
-void
-v850_pop_frame (void)
+static int
+v850_eight_byte_align_p (struct type *type)
{
- struct frame_info *frame = get_current_frame ();
- int regnum;
+ type = check_typedef (type);
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
- get_frame_base (frame),
- get_frame_base (frame)))
- generic_pop_dummy_frame ();
+ if (v850_type_is_scalar (type))
+ return (TYPE_LENGTH (type) == 8);
else
{
- write_register (E_PC_REGNUM, DEPRECATED_FRAME_SAVED_PC (frame));
-
- for (regnum = 0; regnum < E_NUM_REGS; regnum++)
- if (get_frame_saved_regs (frame)[regnum] != 0)
- write_register (regnum,
- read_memory_unsigned_integer (get_frame_saved_regs (frame)[regnum],
- v850_register_raw_size (regnum)));
+ int i;
- write_register (E_SP_REGNUM, get_frame_base (frame));
+ for (i = 0; i < type->num_fields (); i++)
+ {
+ if (v850_eight_byte_align_p (TYPE_FIELD_TYPE (type, i)))
+ return 1;
+ }
}
+ return 0;
+}
- flush_cached_frames ();
+static CORE_ADDR
+v850_frame_align (struct gdbarch *ignore, CORE_ADDR sp)
+{
+ return sp & ~3;
}
-/* Function: push_arguments
- Setup arguments and RP for a call to the target. First four args
+/* Setup arguments and LP for a call to the target. First four args
go in R6->R9, subsequent args go into sp + 16 -> sp + ... Structs
- are passed by reference. 64 bit quantities (doubles and long
- longs) may be split between the regs and the stack. When calling a
- function that returns a struct, a pointer to the struct is passed
- in as a secret first argument (always in R6).
+ are passed by reference. 64 bit quantities (doubles and long longs)
+ may be split between the regs and the stack. When calling a function
+ that returns a struct, a pointer to the struct is passed in as a secret
+ first argument (always in R6).
- Stack space for the args has NOT been allocated: that job is up to us.
- */
+ Stack space for the args has NOT been allocated: that job is up to us. */
-CORE_ADDR
-v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_addr)
+static CORE_ADDR
+v850_push_dummy_call (struct gdbarch *gdbarch,
+ struct value *function,
+ struct regcache *regcache,
+ CORE_ADDR bp_addr,
+ int nargs,
+ struct value **args,
+ CORE_ADDR sp,
+ function_call_return_method return_method,
+ CORE_ADDR struct_addr)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int argreg;
int argnum;
- int len = 0;
+ int arg_space = 0;
int stack_offset;
- /* First, just for safety, make sure stack is aligned */
- sp &= ~3;
-
+ if (gdbarch_tdep (gdbarch)->abi == V850_ABI_RH850)
+ stack_offset = 0;
+ else
/* The offset onto the stack at which we will start copying parameters
(after the registers are used up) begins at 16 rather than at zero.
- I don't really know why, that's just the way it seems to work. */
+ That's how the ABI is defined, though there's no indication that these
+ 16 bytes are used for anything, not even for saving incoming
+ argument registers. */
stack_offset = 16;
- /* Now make space on the stack for the args. */
+ /* Now make space on the stack for the args. */
for (argnum = 0; argnum < nargs; argnum++)
- len += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3);
- sp -= len + stack_offset; /* possibly over-allocating, but it works... */
- /* (you might think we could allocate 16 bytes */
- /* less, but the ABI seems to use it all! ) */
+ arg_space += ((TYPE_LENGTH (value_type (args[argnum])) + 3) & ~3);
+ sp -= arg_space + stack_offset;
argreg = E_ARG0_REGNUM;
- /* the struct_return pointer occupies the first parameter-passing reg */
- if (struct_return)
- argreg++;
+ /* The struct_return pointer occupies the first parameter register. */
+ if (return_method == return_method_struct)
+ regcache_cooked_write_unsigned (regcache, argreg++, struct_addr);
/* Now load as many as possible of the first arguments into
registers, and push the rest onto the stack. There are 16 bytes
for (argnum = 0; argnum < nargs; argnum++)
{
int len;
- char *val;
- char valbuf[v850_register_raw_size (E_ARG0_REGNUM)];
+ gdb_byte *val;
+ gdb_byte valbuf[v850_reg_size];
- if (!v850_type_is_scalar (VALUE_TYPE (*args))
- && TYPE_LENGTH (VALUE_TYPE (*args)) > E_MAX_RETTYPE_SIZE_IN_REGS)
+ if (!v850_type_is_scalar (value_type (*args))
+ && gdbarch_tdep (gdbarch)->abi == V850_ABI_GCC
+ && TYPE_LENGTH (value_type (*args)) > E_MAX_RETTYPE_SIZE_IN_REGS)
{
- store_unsigned_integer (valbuf, 4, VALUE_ADDRESS (*args));
+ store_unsigned_integer (valbuf, 4, byte_order,
+ value_address (*args));
len = 4;
val = valbuf;
}
else
{
- len = TYPE_LENGTH (VALUE_TYPE (*args));
- val = (char *) VALUE_CONTENTS (*args);
+ len = TYPE_LENGTH (value_type (*args));
+ val = (gdb_byte *) value_contents (*args);
+ }
+
+ if (gdbarch_tdep (gdbarch)->eight_byte_align
+ && v850_eight_byte_align_p (value_type (*args)))
+ {
+ if (argreg <= E_ARGLAST_REGNUM && (argreg & 1))
+ argreg++;
+ else if (stack_offset & 0x4)
+ stack_offset += 4;
}
while (len > 0)
{
CORE_ADDR regval;
- regval = extract_unsigned_integer (val, v850_register_raw_size (argreg));
- write_register (argreg, regval);
+ regval = extract_unsigned_integer (val, v850_reg_size, byte_order);
+ regcache_cooked_write_unsigned (regcache, argreg, regval);
- len -= v850_register_raw_size (argreg);
- val += v850_register_raw_size (argreg);
+ len -= v850_reg_size;
+ val += v850_reg_size;
argreg++;
}
else
}
args++;
}
- 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 */
+ /* Store return address. */
+ regcache_cooked_write_unsigned (regcache, E_LP_REGNUM, bp_addr);
-CORE_ADDR
-v850_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
-{
- write_register (E_RP_REGNUM, CALL_DUMMY_ADDRESS ());
- return sp;
-}
+ /* Update stack pointer. */
+ regcache_cooked_write_unsigned (regcache, E_SP_REGNUM, sp);
-/* Function: frame_saved_pc
- Find the caller of this frame. We do this by seeing if E_RP_REGNUM
- is saved in the stack anywhere, otherwise we get it from the
- registers. If the inner frame is a dummy frame, return its PC
- instead of RP, because that's where "caller" of the dummy-frame
- will be found. */
-
-CORE_ADDR
-v850_frame_saved_pc (struct frame_info *fi)
-{
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
- get_frame_base (fi)))
- return deprecated_read_register_dummy (get_frame_pc (fi),
- get_frame_base (fi), E_PC_REGNUM);
- else
- return v850_find_callers_reg (fi, E_RP_REGNUM);
+ return sp;
}
-
-/* Function: fix_call_dummy
- Pokes the callee function's address into the CALL_DUMMY assembly stub.
- Assumes that the CALL_DUMMY looks like this:
- jarl <offset24>, r31
- trap
- */
-
-void
-v850_fix_call_dummy (char *dummy, CORE_ADDR sp, CORE_ADDR fun, int nargs,
- struct value **args, struct type *type, int gcc_p)
+static void
+v850_extract_return_value (struct type *type, struct regcache *regcache,
+ gdb_byte *valbuf)
{
- long offset24;
-
- offset24 = (long) fun - (long) entry_point_address ();
- offset24 &= 0x3fffff;
- offset24 |= 0xff800000; /* jarl <offset24>, r31 */
+ struct gdbarch *gdbarch = regcache->arch ();
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int len = TYPE_LENGTH (type);
- store_unsigned_integer ((unsigned int *) &dummy[2], 2, offset24 & 0xffff);
- store_unsigned_integer ((unsigned int *) &dummy[0], 2, offset24 >> 16);
-}
+ if (len <= v850_reg_size)
+ {
+ ULONGEST val;
-static CORE_ADDR
-v850_saved_pc_after_call (struct frame_info *ignore)
-{
- return read_register (E_RP_REGNUM);
+ regcache_cooked_read_unsigned (regcache, E_V0_REGNUM, &val);
+ store_unsigned_integer (valbuf, len, byte_order, val);
+ }
+ else if (len <= 2 * v850_reg_size)
+ {
+ int i, regnum = E_V0_REGNUM;
+ gdb_byte buf[v850_reg_size];
+ for (i = 0; len > 0; i += 4, len -= 4)
+ {
+ regcache->raw_read (regnum++, buf);
+ memcpy (valbuf + i, buf, len > 4 ? 4 : len);
+ }
+ }
}
static void
-v850_extract_return_value (struct type *type, char *regbuf, char *valbuf)
+v850_store_return_value (struct type *type, struct regcache *regcache,
+ const gdb_byte *valbuf)
{
- CORE_ADDR return_buffer;
-
- if (!v850_use_struct_convention (0, type))
+ struct gdbarch *gdbarch = regcache->arch ();
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int len = TYPE_LENGTH (type);
+
+ if (len <= v850_reg_size)
+ regcache_cooked_write_unsigned
+ (regcache, E_V0_REGNUM,
+ extract_unsigned_integer (valbuf, len, byte_order));
+ else if (len <= 2 * v850_reg_size)
{
- /* Scalar return values of <= 8 bytes are returned in
- E_V0_REGNUM to E_V1_REGNUM. */
- memcpy (valbuf,
- ®buf[REGISTER_BYTE (E_V0_REGNUM)],
- TYPE_LENGTH (type));
- }
- else
- {
- /* Aggregates and return values > 8 bytes are returned in memory,
- pointed to by R6. */
- return_buffer =
- extract_unsigned_integer (regbuf + REGISTER_BYTE (E_V0_REGNUM),
- REGISTER_RAW_SIZE (E_V0_REGNUM));
-
- read_memory (return_buffer, valbuf, TYPE_LENGTH (type));
+ int i, regnum = E_V0_REGNUM;
+ for (i = 0; i < len; i += 4)
+ regcache->raw_write (regnum++, valbuf + i);
}
}
-const static unsigned char *
-v850_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
+static enum return_value_convention
+v850_return_value (struct gdbarch *gdbarch, struct value *function,
+ struct type *type, struct regcache *regcache,
+ gdb_byte *readbuf, const gdb_byte *writebuf)
{
- static unsigned char breakpoint[] = { 0x85, 0x05 };
- *lenptr = sizeof (breakpoint);
- return breakpoint;
+ if (v850_use_struct_convention (gdbarch, type))
+ return RETURN_VALUE_STRUCT_CONVENTION;
+ if (writebuf)
+ v850_store_return_value (type, regcache, writebuf);
+ else if (readbuf)
+ v850_extract_return_value (type, regcache, readbuf);
+ return RETURN_VALUE_REGISTER_CONVENTION;
}
-static CORE_ADDR
-v850_extract_struct_value_address (char *regbuf)
+/* Implement the breakpoint_kind_from_pc gdbarch method. */
+
+static int
+v850_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr)
{
- return extract_unsigned_integer (regbuf + v850_register_byte (E_V0_REGNUM),
- v850_register_raw_size (E_V0_REGNUM));
+ return 2;
}
-static void
-v850_store_return_value (struct type *type, char *valbuf)
+/* Implement the sw_breakpoint_from_kind gdbarch method. */
+
+static const gdb_byte *
+v850_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size)
{
- CORE_ADDR return_buffer;
+ *size = kind;
- if (!v850_use_struct_convention (0, type))
- deprecated_write_register_bytes (REGISTER_BYTE (E_V0_REGNUM), valbuf,
- TYPE_LENGTH (type));
- else
+ switch (gdbarch_bfd_arch_info (gdbarch)->mach)
{
- return_buffer = read_register (E_V0_REGNUM);
- write_memory (return_buffer, valbuf, TYPE_LENGTH (type));
+ case bfd_mach_v850e2:
+ case bfd_mach_v850e2v3:
+ case bfd_mach_v850e3v5:
+ {
+ /* Implement software breakpoints by using the dbtrap instruction.
+ Older architectures had no such instruction. For those, an
+ unconditional branch to self instruction is used. */
+
+ static unsigned char dbtrap_breakpoint[] = { 0x40, 0xf8 };
+
+ return dbtrap_breakpoint;
+ }
+ break;
+ default:
+ {
+ static unsigned char breakpoint[] = { 0x85, 0x05 };
+
+ return breakpoint;
+ }
+ break;
}
}
-static void
-v850_frame_init_saved_regs (struct frame_info *fi)
+static struct v850_frame_cache *
+v850_alloc_frame_cache (struct frame_info *this_frame)
{
- struct prologue_info pi;
- struct pifsr pifsrs[E_NUM_REGS + 1], *pifsr;
- CORE_ADDR func_addr, func_end;
+ struct v850_frame_cache *cache;
- if (!get_frame_saved_regs (fi))
- {
- frame_saved_regs_zalloc (fi);
+ cache = FRAME_OBSTACK_ZALLOC (struct v850_frame_cache);
+ cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
- /* The call dummy doesn't save any registers on the stack, so we
- can return now. */
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), get_frame_base (fi),
- get_frame_base (fi)))
- return;
+ /* Base address. */
+ cache->base = 0;
+ cache->sp_offset = 0;
+ cache->pc = 0;
- /* Find the beginning of this function, so we can analyze its
- prologue. */
- if (find_pc_partial_function (get_frame_pc (fi), NULL, &func_addr, &func_end))
- {
- pi.pifsrs = pifsrs;
+ /* Frameless until proven otherwise. */
+ cache->uses_fp = 0;
- v850_scan_prologue (get_frame_pc (fi), &pi);
+ return cache;
+}
- if (!get_next_frame (fi) && pi.framereg == E_SP_REGNUM)
- deprecated_update_frame_base_hack (fi, read_register (pi.framereg) - pi.frameoffset);
+static struct v850_frame_cache *
+v850_frame_cache (struct frame_info *this_frame, void **this_cache)
+{
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ struct v850_frame_cache *cache;
+ CORE_ADDR current_pc;
+ int i;
- for (pifsr = pifsrs; pifsr->framereg; pifsr++)
- {
- get_frame_saved_regs (fi)[pifsr->reg] = pifsr->offset + get_frame_base (fi);
+ if (*this_cache)
+ return (struct v850_frame_cache *) *this_cache;
- if (pifsr->framereg == E_SP_REGNUM)
- get_frame_saved_regs (fi)[pifsr->reg] += pi.frameoffset;
- }
- }
- /* Else we're out of luck (can't debug completely stripped code).
- FIXME. */
+ cache = v850_alloc_frame_cache (this_frame);
+ *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, E_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 ctbp;
+ ctbp = get_frame_register_unsigned (this_frame, E_CTBP_REGNUM);
+ v850_analyze_prologue (gdbarch, cache->pc, current_pc, cache, ctbp);
}
-}
-/* Function: init_extra_frame_info
- Setup the frame's frame pointer, pc, and frame addresses for saved
- registers. Most of the work is done in scan_prologue().
+ if (!cache->uses_fp)
+ {
+ /* 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, E_SP_REGNUM);
+ }
- Note that when we are called for the last frame (currently active frame),
- that get_frame_pc (fi) and fi->frame will already be setup. However, fi->frame will
- be valid only if this routine uses FP. For previous frames, fi-frame will
- always be correct (since that is derived from v850_frame_chain ()).
+ /* Now that we have the base address for the stack frame we can
+ calculate the value of sp in the calling frame. */
+ trad_frame_set_value (cache->saved_regs, E_SP_REGNUM,
+ cache->base - cache->sp_offset);
- We can be called with the PC in the call dummy under two
- circumstances. First, during normal backtracing, second, while
- figuring out the frame pointer just prior to calling the target
- function (see call_function_by_hand). */
+ /* Adjust all the saved registers such that they contain addresses
+ instead of offsets. */
+ for (i = 0; i < gdbarch_num_regs (gdbarch); i++)
+ if (trad_frame_addr_p (cache->saved_regs, i))
+ cache->saved_regs[i].addr += cache->base;
-static void
-v850_init_extra_frame_info (int fromleaf, struct frame_info *fi)
+ /* The call instruction moves the caller's PC in the callee's LP.
+ Since this is an unwind, do the reverse. Copy the location of LP
+ into PC (the address / regnum) so that a request for PC will be
+ converted into a request for the LP. */
+
+ cache->saved_regs[E_PC_REGNUM] = cache->saved_regs[E_LP_REGNUM];
+
+ return cache;
+}
+
+
+static struct value *
+v850_frame_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
{
- struct prologue_info pi;
+ struct v850_frame_cache *cache = v850_frame_cache (this_frame, this_cache);
- if (get_next_frame (fi))
- deprecated_update_frame_pc_hack (fi, DEPRECATED_FRAME_SAVED_PC (get_next_frame (fi)));
+ gdb_assert (regnum >= 0);
- v850_frame_init_saved_regs (fi);
+ return trad_frame_get_prev_register (this_frame, cache->saved_regs, regnum);
}
static void
-v850_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
+v850_frame_this_id (struct frame_info *this_frame, void **this_cache,
+ struct frame_id *this_id)
{
- write_register (E_ARG0_REGNUM, addr);
+ struct v850_frame_cache *cache = v850_frame_cache (this_frame, this_cache);
+
+ /* This marks the outermost frame. */
+ if (cache->base == 0)
+ return;
+
+ *this_id = frame_id_build (cache->saved_regs[E_SP_REGNUM].addr, cache->pc);
}
+static const struct frame_unwind v850_frame_unwind = {
+ NORMAL_FRAME,
+ default_frame_unwind_stop_reason,
+ v850_frame_this_id,
+ v850_frame_prev_register,
+ NULL,
+ default_frame_sniffer
+};
+
static CORE_ADDR
-v850_target_read_fp (void)
+v850_frame_base_address (struct frame_info *this_frame, void **this_cache)
{
- return read_register (E_FP_RAW_REGNUM);
+ struct v850_frame_cache *cache = v850_frame_cache (this_frame, this_cache);
+
+ return cache->base;
}
+static const struct frame_base v850_frame_base = {
+ &v850_frame_unwind,
+ v850_frame_base_address,
+ v850_frame_base_address,
+ v850_frame_base_address
+};
+
static struct gdbarch *
v850_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
- static LONGEST call_dummy_words[1] = { 0 };
- struct gdbarch_tdep *tdep = NULL;
struct gdbarch *gdbarch;
- int i;
+ struct gdbarch_tdep *tdep;
+ int e_flags, e_machine;
+
+ /* Extract the elf_flags if available. */
+ if (info.abfd != NULL
+ && bfd_get_flavour (info.abfd) == bfd_target_elf_flavour)
+ {
+ e_flags = elf_elfheader (info.abfd)->e_flags;
+ e_machine = elf_elfheader (info.abfd)->e_machine;
+ }
+ else
+ {
+ e_flags = 0;
+ e_machine = 0;
+ }
- /* find a candidate among the list of pre-declared architectures. */
- arches = gdbarch_list_lookup_by_info (arches, &info);
- if (arches != NULL)
- return (arches->gdbarch);
-#if 0
- tdep = (struct gdbarch_tdep *) xmalloc (sizeof (struct gdbarch_tdep));
-#endif
+ /* Try to find the architecture in the list of already defined
+ architectures. */
+ for (arches = gdbarch_list_lookup_by_info (arches, &info);
+ arches != NULL;
+ arches = gdbarch_list_lookup_by_info (arches->next, &info))
+ {
+ if (gdbarch_tdep (arches->gdbarch)->e_flags != e_flags
+ || gdbarch_tdep (arches->gdbarch)->e_machine != e_machine)
+ continue;
- /* Change the register names based on the current machine type. */
- if (info.bfd_arch_info->arch != bfd_arch_v850)
- return 0;
+ return arches->gdbarch;
+ }
+ tdep = XCNEW (struct gdbarch_tdep);
+ tdep->e_flags = e_flags;
+ tdep->e_machine = e_machine;
- gdbarch = gdbarch_alloc (&info, 0);
+ switch (tdep->e_machine)
+ {
+ case EM_V800:
+ tdep->abi = V850_ABI_RH850;
+ break;
+ default:
+ tdep->abi = V850_ABI_GCC;
+ break;
+ }
- /* 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);
+ tdep->eight_byte_align = (tdep->e_flags & EF_RH850_DATA_ALIGN8) ? 1 : 0;
+ gdbarch = gdbarch_alloc (&info, tdep);
- for (i = 0; v850_processor_type_table[i].regnames != NULL; i++)
+ switch (info.bfd_arch_info->mach)
{
- if (v850_processor_type_table[i].mach == info.bfd_arch_info->mach)
- {
- v850_register_names = v850_processor_type_table[i].regnames;
- deprecated_tm_print_insn_info.mach = info.bfd_arch_info->mach;
- break;
- }
+ case bfd_mach_v850:
+ set_gdbarch_register_name (gdbarch, v850_register_name);
+ set_gdbarch_num_regs (gdbarch, E_NUM_OF_V850_REGS);
+ break;
+ case bfd_mach_v850e:
+ case bfd_mach_v850e1:
+ set_gdbarch_register_name (gdbarch, v850e_register_name);
+ set_gdbarch_num_regs (gdbarch, E_NUM_OF_V850E_REGS);
+ break;
+ case bfd_mach_v850e2:
+ case bfd_mach_v850e2v3:
+ set_gdbarch_register_name (gdbarch, v850e2_register_name);
+ set_gdbarch_num_regs (gdbarch, E_NUM_REGS);
+ break;
+ case bfd_mach_v850e3v5:
+ set_gdbarch_register_name (gdbarch, v850e3v5_register_name);
+ set_gdbarch_num_regs (gdbarch, E_NUM_OF_V850E3V5_REGS);
+ break;
}
- /*
- * Basic register fields and methods.
- */
- set_gdbarch_num_regs (gdbarch, E_NUM_REGS);
set_gdbarch_num_pseudo_regs (gdbarch, 0);
set_gdbarch_sp_regnum (gdbarch, E_SP_REGNUM);
- set_gdbarch_deprecated_fp_regnum (gdbarch, E_FP_REGNUM);
set_gdbarch_pc_regnum (gdbarch, E_PC_REGNUM);
- set_gdbarch_register_name (gdbarch, v850_register_name);
- set_gdbarch_deprecated_register_size (gdbarch, v850_reg_size);
- set_gdbarch_deprecated_register_bytes (gdbarch, E_ALL_REGS_SIZE);
- set_gdbarch_register_byte (gdbarch, v850_register_byte);
- set_gdbarch_register_raw_size (gdbarch, v850_register_raw_size);
- set_gdbarch_deprecated_max_register_raw_size (gdbarch, v850_reg_size);
- set_gdbarch_register_virtual_size (gdbarch, v850_register_raw_size);
- set_gdbarch_deprecated_max_register_virtual_size (gdbarch, v850_reg_size);
- set_gdbarch_register_virtual_type (gdbarch, v850_reg_virtual_type);
-
- set_gdbarch_deprecated_target_read_fp (gdbarch, v850_target_read_fp);
-
- /*
- * Frame Info
- */
- set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, v850_frame_init_saved_regs);
- set_gdbarch_deprecated_init_extra_frame_info (gdbarch, v850_init_extra_frame_info);
- set_gdbarch_deprecated_frame_chain (gdbarch, v850_frame_chain);
- set_gdbarch_deprecated_saved_pc_after_call (gdbarch, v850_saved_pc_after_call);
- set_gdbarch_deprecated_frame_saved_pc (gdbarch, v850_frame_saved_pc);
- set_gdbarch_skip_prologue (gdbarch, v850_skip_prologue);
+ set_gdbarch_fp0_regnum (gdbarch, -1);
- /*
- * Miscelany
- */
- /* Stack grows up. */
- set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
- /* PC stops zero byte after a trap instruction
- (which means: exactly on trap instruction). */
- set_gdbarch_decr_pc_after_break (gdbarch, 0);
- /* This value is almost never non-zero... */
- set_gdbarch_function_start_offset (gdbarch, 0);
- /* This value is almost never non-zero... */
- set_gdbarch_frame_args_skip (gdbarch, 0);
- /* OK to default this value to 'unknown'. */
- set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
-
- /*
- * Call Dummies
- *
- * These values and methods are used when gdb calls a target function. */
- set_gdbarch_deprecated_push_return_address (gdbarch, v850_push_return_address);
- set_gdbarch_deprecated_extract_return_value (gdbarch, v850_extract_return_value);
- set_gdbarch_deprecated_push_arguments (gdbarch, v850_push_arguments);
- set_gdbarch_deprecated_pop_frame (gdbarch, v850_pop_frame);
- set_gdbarch_deprecated_store_struct_return (gdbarch, v850_store_struct_return);
- set_gdbarch_deprecated_store_return_value (gdbarch, v850_store_return_value);
- set_gdbarch_deprecated_extract_struct_value_address (gdbarch, v850_extract_struct_value_address);
- set_gdbarch_use_struct_convention (gdbarch, v850_use_struct_convention);
- set_gdbarch_deprecated_call_dummy_words (gdbarch, call_dummy_nil);
- set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, 0);
- set_gdbarch_deprecated_fix_call_dummy (gdbarch, v850_fix_call_dummy);
- set_gdbarch_breakpoint_from_pc (gdbarch, v850_breakpoint_from_pc);
+ set_gdbarch_register_type (gdbarch, v850_register_type);
+ set_gdbarch_char_signed (gdbarch, 1);
+ 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_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
- set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
- /* Should be using push_dummy_call. */
- set_gdbarch_deprecated_dummy_write_sp (gdbarch, deprecated_write_sp);
+ set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
+
+ set_gdbarch_breakpoint_kind_from_pc (gdbarch, v850_breakpoint_kind_from_pc);
+ set_gdbarch_sw_breakpoint_from_kind (gdbarch, v850_sw_breakpoint_from_kind);
+ set_gdbarch_return_value (gdbarch, v850_return_value);
+ set_gdbarch_push_dummy_call (gdbarch, v850_push_dummy_call);
+ set_gdbarch_skip_prologue (gdbarch, v850_skip_prologue);
+
+ set_gdbarch_frame_align (gdbarch, v850_frame_align);
+ frame_base_set_default (gdbarch, &v850_frame_base);
+
+ /* Hook in ABI-specific overrides, if they have been registered. */
+ gdbarch_init_osabi (info, gdbarch);
+
+ dwarf2_append_unwinders (gdbarch);
+ frame_unwind_append_unwinder (gdbarch, &v850_frame_unwind);
return gdbarch;
}
+void _initialize_v850_tdep ();
void
-_initialize_v850_tdep (void)
+_initialize_v850_tdep ()
{
- deprecated_tm_print_insn = print_insn_v850;
register_gdbarch_init (bfd_arch_v850, v850_gdbarch_init);
+ register_gdbarch_init (bfd_arch_v850_rh850, v850_gdbarch_init);
}
projects / deliverable / binutils-gdb.git / blobdiff