X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fv850-tdep.c;h=4be63b1cb77daf36a4995832fa30b7c688f4dae3;hb=7190276c52b9d86a52aae73d3a0f8b56e7a1f4f1;hp=79dbafce5ddd40e746a554cef78213dccbf94672;hpb=f42accbe7716215000a57d249d71abe32784c9fe;p=deliverable%2Fbinutils-gdb.git
diff --git a/gdb/v850-tdep.c b/gdb/v850-tdep.c
index 79dbafce5d..4be63b1cb7 100644
--- a/gdb/v850-tdep.c
+++ b/gdb/v850-tdep.c
@@ -1,13 +1,12 @@
/* Target-dependent code for the NEC V850 for GDB, the GNU debugger.
- Copyright 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free
- Software Foundation, Inc.
+ Copyright (C) 1996-2019 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,
@@ -16,252 +15,484 @@
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 . */
#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 "objfiles.h"
#include "arch-utils.h"
#include "regcache.h"
-#include "symtab.h"
#include "dis-asm.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 "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[] =
+ Renesas defined the RH850 ABI which they use in their compiler. It
+ is similar to the original Green Hills ABI with some minor
+ differences. */
+
+enum v850_abi
{
- "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"
+ V850_ABI_GCC,
+ V850_ABI_RH850
};
-char **v850_register_names = v850_generic_reg_names;
+/* Architecture specific data. */
-struct
- {
- char **regnames;
- int mach;
- }
-v850_processor_type_table[] =
+struct gdbarch_tdep
{
- {
- v850_generic_reg_names, bfd_mach_v850
- }
- ,
- {
- v850e_reg_names, bfd_mach_v850e
- }
- ,
- {
- v850e_reg_names, bfd_mach_v850e1
- }
- ,
- {
- NULL, 0
- }
+ /* Fields from the ELF header. */
+ int e_flags;
+ int e_machine;
+
+ /* Which ABI are we using? */
+ enum v850_abi abi;
+ int eight_byte_align;
+};
+
+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;
};
/* 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. */
+};
-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 */
+static const char *
+v850_register_name (struct gdbarch *gdbarch, int 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];
+}
-struct prologue_info
+static const char *
+v850e_register_name (struct gdbarch *gdbarch, int regnum)
+{
+ static const char *v850e_reg_names[] =
{
- int framereg;
- int frameoffset;
- int start_function;
- struct pifsr *pifsrs;
+ "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"
};
-
-static CORE_ADDR v850_scan_prologue (CORE_ADDR pc, struct prologue_info *fs);
-
-/* Function: v850_register_name
- Returns the name of the v850/v850e register N. */
+ if (regnum < 0 || regnum > E_NUM_OF_V850E_REGS)
+ return NULL;
+ return v850e_reg_names[regnum];
+}
static const char *
-v850_register_name (int regnum)
+v850e2_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 *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_byte
- Returns the byte position in the register cache for register N. */
+/* Implement the "register_name" gdbarch method for v850e3v5. */
-static int
-v850_register_byte (int regnum)
+static const char *
+v850e3v5_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;
-}
-
-/* Function: v850_register_raw_size
- Returns the number of bytes occupied by the register on the target. */
+ 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",
+ };
-static int
-v850_register_raw_size (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;
+ 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
@@ -273,30 +504,32 @@ v850_type_is_scalar (struct type *t)
}
/* 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 */
+ /* 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) == TYPE_CODE_STRUCT
|| TYPE_CODE (type) == TYPE_CODE_UNION)
&& TYPE_NFIELDS (type) == 1)
@@ -313,9 +546,9 @@ v850_use_struct_convention (int gcc_p, struct type *type)
}
}
- /* 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 */
+ /* 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
&& v850_type_is_scalar (TYPE_FIELD_TYPE (type, 0))
&& TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)) == 4)
@@ -326,7 +559,7 @@ v850_use_struct_convention (int gcc_p, struct type *type)
if (TYPE_CODE (fld_type) == 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;
}
@@ -335,35 +568,34 @@ v850_use_struct_convention (int gcc_p, struct type *type)
}
/* The value is a union which contains at least one field which
- * would be returned in registers according to these rules
- * -> returned in register */
+ would be returned in registers according to these rules ->
+ returned in register. */
if (TYPE_CODE (type) == TYPE_CODE_UNION)
{
for (i = 0; i < TYPE_NFIELDS (type); ++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;
}
-
+/* 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;
@@ -388,23 +620,23 @@ handle_prepare (int insn, int insn2, CORE_ADDR * current_pc_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++)
@@ -412,34 +644,28 @@ handle_prepare (int insn, int insn2, CORE_ADDR * current_pc_ptr,
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);
@@ -487,22 +713,22 @@ handle_pushm (int insn, int insn2, struct prologue_info *pi,
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++)
@@ -510,30 +736,34 @@ handle_pushm (int insn, int insn2, struct prologue_info *pi,
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;
}
-
+/* 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
@@ -542,82 +772,47 @@ handle_pushm (int insn, int insn2, struct prologue_info *pi,
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. */
-
- if (find_pc_partial_function (pc, NULL, &func_addr, NULL))
- {
- struct symtab_and_line sal;
-
- sal = find_pc_line (func_addr, 0);
+ memset (&pifsrs, 0, sizeof pifsrs);
+ pifsr = &pifsrs[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;
}
@@ -633,311 +828,219 @@ v850_scan_prologue (CORE_ADDR pc, struct prologue_info *pi)
current_pc += disp - 4;
prologue_end = (current_pc
+ (2 * 3) /* moves to/from ep */
- + 4 /* addi ,sp,sp */
- + 2 /* jmp [r10] */
+ + 4 /* addi ,sp,sp */
+ + 2 /* jmp [r10] */
+ (2 * 12) /* sst.w to save r2, r20-r29, r31 */
+ 20); /* slop area */
-
-#ifdef DEBUG
- printf_filtered ("\tfound jarl ,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 */
- 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 */
- }
-
- else if ((insn & 0xffe0) == ((E_SP_REGNUM << 11) | 0x0240)) /* add ,sp */
- pi->frameoffset += ((insn & 0x1f) ^ 0x10) - 0x10;
- else if (insn == ((E_SP_REGNUM << 11) | 0x0600 | E_SP_REGNUM)) /* addi ,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;
+ break; /* Ran into end of prologue. */
}
- 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 ,sp */
+ pi->sp_offset += ((insn & 0x1f) ^ 0x10) - 0x10;
+ else if (insn == ((E_SP_REGNUM << 11) | 0x0600 | E_SP_REGNUM))
+ /* addi ,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 ,[sp] */
- || (fp_used
- && (insn & 0x07ff) == (0x0760 | E_FP_RAW_REGNUM))) /* st.w ,[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 ,[sp] or st.w ,[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 ,[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 ,[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. */
-
-static 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)))
- return deprecated_read_register_dummy (get_frame_pc (fi),
- get_frame_base (fi), regnum);
- else if (deprecated_get_frame_saved_regs (fi)[regnum] != 0)
- return read_memory_unsigned_integer (deprecated_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. */
-
-static 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))
- 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. */
+/* Return the address of the first code past the prologue of the function. */
static CORE_ADDR
-v850_skip_prologue (CORE_ADDR pc)
+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. */
-static 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)))
- deprecated_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 (deprecated_get_frame_saved_regs (frame)[regnum] != 0)
- write_register (regnum,
- read_memory_unsigned_integer (deprecated_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_NFIELDS (type); 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. */
static CORE_ADDR
-v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_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
@@ -945,20 +1048,31 @@ v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
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)
@@ -966,11 +1080,11 @@ v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
{
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
@@ -983,267 +1097,365 @@ v850_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
}
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);
+
+ /* Update stack pointer. */
+ regcache_cooked_write_unsigned (regcache, E_SP_REGNUM, sp);
-static CORE_ADDR
-v850_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
-{
- write_register (E_RP_REGNUM, entry_point_address ());
return 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. */
-
-static CORE_ADDR
-v850_frame_saved_pc (struct frame_info *fi)
+static void
+v850_extract_return_value (struct type *type, struct regcache *regcache,
+ gdb_byte *valbuf)
{
- if (deprecated_pc_in_call_dummy (get_frame_pc (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);
-}
+ struct gdbarch *gdbarch = regcache->arch ();
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int len = TYPE_LENGTH (type);
+ 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[DEPRECATED_REGISTER_BYTE (E_V0_REGNUM)],
- TYPE_LENGTH (type));
+ int i, regnum = E_V0_REGNUM;
+ for (i = 0; i < len; i += 4)
+ regcache->raw_write (regnum++, valbuf + i);
}
- else
- {
- /* Aggregates and return values > 8 bytes are returned in memory,
- pointed to by R6. */
- return_buffer =
- extract_unsigned_integer (regbuf + DEPRECATED_REGISTER_BYTE (E_V0_REGNUM),
- register_size (current_gdbarch, E_V0_REGNUM));
+}
- read_memory (return_buffer, valbuf, TYPE_LENGTH (type));
- }
+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)
+{
+ 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;
}
-const static unsigned char *
-v850_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
+/* Implement the breakpoint_kind_from_pc gdbarch method. */
+
+static int
+v850_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr)
{
- static unsigned char breakpoint[] = { 0x85, 0x05 };
- *lenptr = sizeof (breakpoint);
- return breakpoint;
+ 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 (DEPRECATED_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 (!deprecated_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)))
- 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++)
- {
- deprecated_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)
- deprecated_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)
{
- struct gdbarch_tdep *tdep = NULL;
struct gdbarch *gdbarch;
- int i;
+ struct gdbarch_tdep *tdep;
+ int e_flags, e_machine;
- /* find a candidate among the list of pre-declared architectures. */
- arches = gdbarch_list_lookup_by_info (arches, &info);
- if (arches != NULL)
- return (arches->gdbarch);
+ /* 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;
+ }
-#if 0
- tdep = (struct gdbarch_tdep *) xmalloc (sizeof (struct gdbarch_tdep));
-#endif
- /* Change the register names based on the current machine type. */
- if (info.bfd_arch_info->arch != bfd_arch_v850)
- return 0;
+ /* 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;
- gdbarch = gdbarch_alloc (&info, 0);
+ return arches->gdbarch;
+ }
+ tdep = XCNEW (struct gdbarch_tdep);
+ tdep->e_flags = e_flags;
+ tdep->e_machine = e_machine;
+
+ 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, deprecated_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;
- 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_byte (gdbarch, v850_register_byte);
- set_gdbarch_deprecated_register_raw_size (current_gdbarch, gdbarch, v850_register_raw_size);
- set_gdbarch_deprecated_register_virtual_size (gdbarch, v850_register_raw_size);
- set_gdbarch_deprecated_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);
-
- /*
- * Miscelany
- */
- /* Stack grows up. */
- set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
+ set_gdbarch_fp0_regnum (gdbarch, -1);
- /*
- * 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_use_struct_convention (gdbarch, v850_use_struct_convention);
- 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_print_insn (gdbarch, print_insn_v850);
+ 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;
}
-extern initialize_file_ftype _initialize_v850_tdep; /* -Wmissing-prototypes */
-
void
_initialize_v850_tdep (void)
{
register_gdbarch_init (bfd_arch_v850, v850_gdbarch_init);
+ register_gdbarch_init (bfd_arch_v850_rh850, v850_gdbarch_init);
}