/* Target-dependent code for GNU/Linux on MIPS processors.
- Copyright (C) 2001, 2002, 2004, 2005, 2006
+ Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007
Free Software Foundation, Inc.
This file is part of GDB.
#include "trad-frame.h"
#include "tramp-frame.h"
#include "floatformat.h"
-
-/* Copied from <asm/elf.h>. */
-#define ELF_NGREG 45
-#define ELF_NFPREG 33
-
-typedef unsigned char elf_greg_t[4];
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-
-typedef unsigned char elf_fpreg_t[8];
-typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
-
-/* 0 - 31 are integer registers, 32 - 63 are fp registers. */
-#define FPR_BASE 32
-#define PC 64
-#define CAUSE 65
-#define BADVADDR 66
-#define MMHI 67
-#define MMLO 68
-#define FPC_CSR 69
-#define FPC_EIR 70
-
-#define EF_REG0 6
-#define EF_REG31 37
-#define EF_LO 38
-#define EF_HI 39
-#define EF_CP0_EPC 40
-#define EF_CP0_BADVADDR 41
-#define EF_CP0_STATUS 42
-#define EF_CP0_CAUSE 43
-
-#define EF_SIZE 180
+#include "solib.h"
+#include "symtab.h"
+#include "mips-linux-tdep.h"
/* Figure out where the longjmp will land.
We expect the first arg to be a pointer to the jmp_buf structure
static void
supply_32bit_reg (int regnum, const void *addr)
{
- char buf[MAX_REGISTER_SIZE];
+ gdb_byte buf[MAX_REGISTER_SIZE];
store_signed_integer (buf, register_size (current_gdbarch, regnum),
extract_signed_integer (addr, 4));
regcache_raw_supply (current_regcache, regnum, buf);
/* Unpack an elf_gregset_t into GDB's register cache. */
-static void
-mips_supply_gregset (elf_gregset_t *gregsetp)
+void
+mips_supply_gregset (mips_elf_gregset_t *gregsetp)
{
int regi;
- elf_greg_t *regp = *gregsetp;
+ mips_elf_greg_t *regp = *gregsetp;
char zerobuf[MAX_REGISTER_SIZE];
memset (zerobuf, 0, MAX_REGISTER_SIZE);
/* Pack our registers (or one register) into an elf_gregset_t. */
-static void
-mips_fill_gregset (elf_gregset_t *gregsetp, int regno)
+void
+mips_fill_gregset (mips_elf_gregset_t *gregsetp, int regno)
{
int regaddr, regi;
- elf_greg_t *regp = *gregsetp;
+ mips_elf_greg_t *regp = *gregsetp;
void *dst;
if (regno == -1)
{
- memset (regp, 0, sizeof (elf_gregset_t));
+ memset (regp, 0, sizeof (mips_elf_gregset_t));
for (regi = 0; regi < 32; regi++)
mips_fill_gregset (gregsetp, regi);
mips_fill_gregset (gregsetp, mips_regnum (current_gdbarch)->lo);
/* Likewise, unpack an elf_fpregset_t. */
-static void
-mips_supply_fpregset (elf_fpregset_t *fpregsetp)
+void
+mips_supply_fpregset (mips_elf_fpregset_t *fpregsetp)
{
int regi;
char zerobuf[MAX_REGISTER_SIZE];
/* Likewise, pack one or all floating point registers into an
elf_fpregset_t. */
-static void
-mips_fill_fpregset (elf_fpregset_t *fpregsetp, int regno)
+void
+mips_fill_fpregset (mips_elf_fpregset_t *fpregsetp, int regno)
{
char *from, *to;
/* Support for 64-bit ABIs. */
-/* Copied from <asm/elf.h>. */
-#define MIPS64_ELF_NGREG 45
-#define MIPS64_ELF_NFPREG 33
-
-typedef unsigned char mips64_elf_greg_t[8];
-typedef mips64_elf_greg_t mips64_elf_gregset_t[MIPS64_ELF_NGREG];
-
-typedef unsigned char mips64_elf_fpreg_t[8];
-typedef mips64_elf_fpreg_t mips64_elf_fpregset_t[MIPS64_ELF_NFPREG];
-
-/* 0 - 31 are integer registers, 32 - 63 are fp registers. */
-#define MIPS64_FPR_BASE 32
-#define MIPS64_PC 64
-#define MIPS64_CAUSE 65
-#define MIPS64_BADVADDR 66
-#define MIPS64_MMHI 67
-#define MIPS64_MMLO 68
-#define MIPS64_FPC_CSR 69
-#define MIPS64_FPC_EIR 70
-
-#define MIPS64_EF_REG0 0
-#define MIPS64_EF_REG31 31
-#define MIPS64_EF_LO 32
-#define MIPS64_EF_HI 33
-#define MIPS64_EF_CP0_EPC 34
-#define MIPS64_EF_CP0_BADVADDR 35
-#define MIPS64_EF_CP0_STATUS 36
-#define MIPS64_EF_CP0_CAUSE 37
-
-#define MIPS64_EF_SIZE 304
-
/* Figure out where the longjmp will land.
We expect the first arg to be a pointer to the jmp_buf structure
from which we extract the pc (MIPS_LINUX_JB_PC) that we will land
return 1;
}
-/* Unpack an elf_gregset_t into GDB's register cache. */
+/* Register set support functions. These operate on standard 64-bit
+ regsets, but work whether the target is 32-bit or 64-bit. A 32-bit
+ target will still use the 64-bit format for PTRACE_GETREGS. */
+
+/* Supply a 64-bit register. */
+
+void
+supply_64bit_reg (int regnum, const gdb_byte *buf)
+{
+ if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG
+ && register_size (current_gdbarch, regnum) == 4)
+ regcache_raw_supply (current_regcache, regnum, buf + 4);
+ else
+ regcache_raw_supply (current_regcache, regnum, buf);
+}
+
+/* Unpack a 64-bit elf_gregset_t into GDB's register cache. */
-static void
+void
mips64_supply_gregset (mips64_elf_gregset_t *gregsetp)
{
int regi;
mips64_elf_greg_t *regp = *gregsetp;
- char zerobuf[MAX_REGISTER_SIZE];
+ gdb_byte zerobuf[MAX_REGISTER_SIZE];
memset (zerobuf, 0, MAX_REGISTER_SIZE);
for (regi = MIPS64_EF_REG0; regi <= MIPS64_EF_REG31; regi++)
- regcache_raw_supply (current_regcache, (regi - MIPS64_EF_REG0),
- (char *)(regp + regi));
-
- regcache_raw_supply (current_regcache,
- mips_regnum (current_gdbarch)->lo,
- (char *) (regp + MIPS64_EF_LO));
- regcache_raw_supply (current_regcache,
- mips_regnum (current_gdbarch)->hi,
- (char *) (regp + MIPS64_EF_HI));
-
- regcache_raw_supply (current_regcache,
- mips_regnum (current_gdbarch)->pc,
- (char *) (regp + MIPS64_EF_CP0_EPC));
- regcache_raw_supply (current_regcache,
- mips_regnum (current_gdbarch)->badvaddr,
- (char *) (regp + MIPS64_EF_CP0_BADVADDR));
- regcache_raw_supply (current_regcache, MIPS_PS_REGNUM,
- (char *) (regp + MIPS64_EF_CP0_STATUS));
- regcache_raw_supply (current_regcache,
- mips_regnum (current_gdbarch)->cause,
- (char *) (regp + MIPS64_EF_CP0_CAUSE));
+ supply_64bit_reg (regi - MIPS64_EF_REG0, (gdb_byte *)(regp + regi));
+
+ supply_64bit_reg (mips_regnum (current_gdbarch)->lo,
+ (gdb_byte *) (regp + MIPS64_EF_LO));
+ supply_64bit_reg (mips_regnum (current_gdbarch)->hi,
+ (gdb_byte *) (regp + MIPS64_EF_HI));
+
+ supply_64bit_reg (mips_regnum (current_gdbarch)->pc,
+ (gdb_byte *) (regp + MIPS64_EF_CP0_EPC));
+ supply_64bit_reg (mips_regnum (current_gdbarch)->badvaddr,
+ (gdb_byte *) (regp + MIPS64_EF_CP0_BADVADDR));
+ supply_64bit_reg (MIPS_PS_REGNUM,
+ (gdb_byte *) (regp + MIPS64_EF_CP0_STATUS));
+ supply_64bit_reg (mips_regnum (current_gdbarch)->cause,
+ (gdb_byte *) (regp + MIPS64_EF_CP0_CAUSE));
/* Fill inaccessible registers with zero. */
regcache_raw_supply (current_regcache, MIPS_UNUSED_REGNUM, zerobuf);
regcache_raw_supply (current_regcache, regi, zerobuf);
}
-/* Pack our registers (or one register) into an elf_gregset_t. */
+/* Pack our registers (or one register) into a 64-bit elf_gregset_t. */
-static void
+void
mips64_fill_gregset (mips64_elf_gregset_t *gregsetp, int regno)
{
int regaddr, regi;
}
if (regno < 32)
- {
- dst = regp + regno + MIPS64_EF_REG0;
- regcache_raw_collect (current_regcache, regno, dst);
- return;
- }
-
- if (regno == mips_regnum (current_gdbarch)->lo)
+ regaddr = regno + MIPS64_EF_REG0;
+ else if (regno == mips_regnum (current_gdbarch)->lo)
regaddr = MIPS64_EF_LO;
else if (regno == mips_regnum (current_gdbarch)->hi)
regaddr = MIPS64_EF_HI;
if (regaddr != -1)
{
+ gdb_byte buf[MAX_REGISTER_SIZE];
+ LONGEST val;
+
+ regcache_raw_collect (current_regcache, regno, buf);
+ val = extract_signed_integer (buf,
+ register_size (current_gdbarch, regno));
dst = regp + regaddr;
- regcache_raw_collect (current_regcache, regno, dst);
+ store_signed_integer (dst, 8, val);
}
}
/* Likewise, unpack an elf_fpregset_t. */
-static void
+void
mips64_supply_fpregset (mips64_elf_fpregset_t *fpregsetp)
{
int regi;
- char zerobuf[MAX_REGISTER_SIZE];
-
- memset (zerobuf, 0, MAX_REGISTER_SIZE);
- for (regi = 0; regi < 32; regi++)
- regcache_raw_supply (current_regcache, FP0_REGNUM + regi,
- (char *)(*fpregsetp + regi));
-
- regcache_raw_supply (current_regcache,
- mips_regnum (current_gdbarch)->fp_control_status,
- (char *)(*fpregsetp + 32));
-
- /* FIXME: how can we supply FCRIR? The ABI doesn't tell us. */
- regcache_raw_supply (current_regcache,
- mips_regnum (current_gdbarch)->fp_implementation_revision,
- zerobuf);
+ /* See mips_linux_o32_sigframe_init for a description of the
+ peculiar FP register layout. */
+ if (register_size (current_gdbarch, FP0_REGNUM) == 4)
+ for (regi = 0; regi < 32; regi++)
+ {
+ gdb_byte *reg_ptr = (gdb_byte *) (*fpregsetp + (regi & ~1));
+ if ((TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) != (regi & 1))
+ reg_ptr += 4;
+ regcache_raw_supply (current_regcache, FP0_REGNUM + regi, reg_ptr);
+ }
+ else
+ for (regi = 0; regi < 32; regi++)
+ regcache_raw_supply (current_regcache, FP0_REGNUM + regi,
+ (char *)(*fpregsetp + regi));
+
+ supply_32bit_reg (mips_regnum (current_gdbarch)->fp_control_status,
+ (gdb_byte *)(*fpregsetp + 32));
+
+ /* The ABI doesn't tell us how to supply FCRIR, and core dumps don't
+ include it - but the result of PTRACE_GETFPREGS does. The best we
+ can do is to assume that its value is present. */
+ supply_32bit_reg (mips_regnum (current_gdbarch)->fp_implementation_revision,
+ (gdb_byte *)(*fpregsetp + 32) + 4);
}
/* Likewise, pack one or all floating point registers into an
elf_fpregset_t. */
-static void
+void
mips64_fill_fpregset (mips64_elf_fpregset_t *fpregsetp, int regno)
{
- char *from, *to;
+ gdb_byte *to;
if ((regno >= FP0_REGNUM) && (regno < FP0_REGNUM + 32))
{
- to = (char *) (*fpregsetp + regno - FP0_REGNUM);
- regcache_raw_collect (current_regcache, regno, to);
+ /* See mips_linux_o32_sigframe_init for a description of the
+ peculiar FP register layout. */
+ if (register_size (current_gdbarch, regno) == 4)
+ {
+ int regi = regno - FP0_REGNUM;
+
+ to = (gdb_byte *) (*fpregsetp + (regi & ~1));
+ if ((TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) != (regi & 1))
+ to += 4;
+ regcache_raw_collect (current_regcache, regno, to);
+ }
+ else
+ {
+ to = (gdb_byte *) (*fpregsetp + regno - FP0_REGNUM);
+ regcache_raw_collect (current_regcache, regno, to);
+ }
}
else if (regno == mips_regnum (current_gdbarch)->fp_control_status)
{
- to = (char *) (*fpregsetp + 32);
- regcache_raw_collect (current_regcache, regno, to);
+ gdb_byte buf[MAX_REGISTER_SIZE];
+ LONGEST val;
+
+ regcache_raw_collect (current_regcache, regno, buf);
+ val = extract_signed_integer (buf,
+ register_size (current_gdbarch, regno));
+ to = (gdb_byte *) (*fpregsetp + 32);
+ store_signed_integer (to, 4, val);
+ }
+ else if (regno == mips_regnum (current_gdbarch)->fp_implementation_revision)
+ {
+ gdb_byte buf[MAX_REGISTER_SIZE];
+ LONGEST val;
+
+ regcache_raw_collect (current_regcache, regno, buf);
+ val = extract_signed_integer (buf,
+ register_size (current_gdbarch, regno));
+ to = (gdb_byte *) (*fpregsetp + 32) + 4;
+ store_signed_integer (to, 4, val);
}
else if (regno == -1)
{
for (regi = 0; regi < 32; regi++)
mips64_fill_fpregset (fpregsetp, FP0_REGNUM + regi);
- mips64_fill_fpregset(fpregsetp,
- mips_regnum (current_gdbarch)->fp_control_status);
+ mips64_fill_fpregset (fpregsetp,
+ mips_regnum (current_gdbarch)->fp_control_status);
+ mips64_fill_fpregset (fpregsetp, (mips_regnum (current_gdbarch)
+ ->fp_implementation_revision));
}
}
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
int which, CORE_ADDR reg_addr)
{
- elf_gregset_t gregset;
- elf_fpregset_t fpregset;
+ mips_elf_gregset_t gregset;
+ mips_elf_fpregset_t fpregset;
mips64_elf_gregset_t gregset64;
mips64_elf_fpregset_t fpregset64;
static const struct tramp_frame mips_linux_n64_rt_sigframe = {
SIGTRAMP_FRAME,
4,
- { MIPS_INST_LI_V0_N64_RT_SIGRETURN,
- MIPS_INST_SYSCALL,
- TRAMP_SENTINEL_INSN },
+ {
+ { MIPS_INST_LI_V0_N64_RT_SIGRETURN, -1 },
+ { MIPS_INST_SYSCALL, -1 },
+ { TRAMP_SENTINEL_INSN, -1 }
+ },
mips_linux_n32n64_sigframe_init
};
/* Wrapper functions. These are only used by libthread_db. */
void
-supply_gregset (elf_gregset_t *gregsetp)
+supply_gregset (mips_elf_gregset_t *gregsetp)
{
if (mips_isa_regsize (current_gdbarch) == 4)
mips_supply_gregset (gregsetp);
}
void
-fill_gregset (elf_gregset_t *gregsetp, int regno)
+fill_gregset (mips_elf_gregset_t *gregsetp, int regno)
{
if (mips_isa_regsize (current_gdbarch) == 4)
mips_fill_gregset (gregsetp, regno);
/* Likewise, unpack an elf_fpregset_t. */
void
-supply_fpregset (elf_fpregset_t *fpregsetp)
+supply_fpregset (mips_elf_fpregset_t *fpregsetp)
{
if (mips_isa_regsize (current_gdbarch) == 4)
mips_supply_fpregset (fpregsetp);
elf_fpregset_t. */
void
-fill_fpregset (elf_fpregset_t *fpregsetp, int regno)
+fill_fpregset (mips_elf_fpregset_t *fpregsetp, int regno)
{
if (mips_isa_regsize (current_gdbarch) == 4)
mips_fill_fpregset (fpregsetp, regno);
the same 128-bit IEEE floating point format that IA-64 uses,
except that the quiet/signalling NaN bit is reversed (GDB
does not distinguish between quiet and signalling NaNs). */
- if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
- set_gdbarch_long_double_format (gdbarch, &floatformat_ia64_quad_big);
- else
- set_gdbarch_long_double_format (gdbarch, &floatformat_ia64_quad_little);
+ set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad);
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_n32_rt_sigframe);
break;
case MIPS_ABI_N64:
the same 128-bit IEEE floating point format that IA-64 uses,
except that the quiet/signalling NaN bit is reversed (GDB
does not distinguish between quiet and signalling NaNs). */
- if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
- set_gdbarch_long_double_format (gdbarch, &floatformat_ia64_quad_big);
- else
- set_gdbarch_long_double_format (gdbarch, &floatformat_ia64_quad_little);
+ set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad);
tramp_frame_prepend_unwinder (gdbarch, &mips_linux_n64_rt_sigframe);
break;
default:
break;
}
+ set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
set_gdbarch_skip_solib_resolver (gdbarch, mips_linux_skip_resolver);
set_gdbarch_software_single_step (gdbarch, mips_software_single_step);
projects / deliverable / binutils-gdb.git / blobdiff