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* Makefile.in (mips_linux_tdep_h): New.

Browse Source 
(mpis-linux-nat.o, mips-linux-tdep.o): Update.
	* mips-linux-nat.c: Include "inferior.h", "mips-linux-tdep.h", and
	<sys/ptrace.h>.
	(have_ptrace_regsets, super_fetch_registers, super_store_registers)
	(mips64_linux_regsets_fetch_registers)
	(mips64_linux_regsets_store_registers, mips64_linux_fetch_registers)
	(mips64_linux_store_registers): New.
	(_initialize_mips_linux_nat): Override to_fetch_registers and
	to_store_registers.
	* mips-linux-tdep.h: New file.
	* mips-linux-tdep.c: Include "mips-linux-tdep.c".
	(ELF_NGREG, ELF_NFPREG, elf_greg_t, elf_gregset_t, elf_fpreg_t)
	(elf_fpregset_t, FPR_BASE, PC, CAUSE, BADVADDR, MMHI, MMLO)
	(FPC_CSR, FPC_EIR, EF_REG0, EF_REG31, EF_LO, EF_HI, EF_CP0_EPC)
	(EF_CP0_BADVADDR, EF_CP0_STATUS, EF_CP0_CAUSE, EF_SIZE)
	(MIPS64_ELF_NGREG, MIPS64_ELF_NFPREG, mips64_elf_greg_t)
	(mips64_elf_gregset_t, mips64_elf_fpreg_t, mips64_elf_fpregset_t)
	(MIPS64_FPR_BASE, MIPS64_PC, MIPS64_CAUSE, MIPS64_BADVADDR)
	(MIPS64_MMHI, MIPS64_MMLO, MIPS64_FPC_CSR, MIPS64_FPC_EIR)
	(MIPS64_EF_REG0, MIPS64_EF_REG31, MIPS64_EF_LO, MIPS64_EF_HI)
	(MIPS64_EF_CP0_EPC, MIPS64_EF_CP0_BADVADDR, MIPS64_EF_CP0_STATUS)
	(MIPS64_EF_CP0_CAUSE, MIPS64_EF_SIZE): Delete.
	(supply_32bit_reg): Use gdb_byte.
	(supply_64bit_reg): New.
	(mips_supply_gregset, mips_fill_gregset, mips_supply_fpregset)
	(mips_fill_fpregset, fetch_core_registers, supply_gregset)
	(fill_gregset, supply_fpregset): Update for renamed types.
	(mips64_supply_gregset): Use gdb_byte and supply_64bit_reg.
	(mips64_fill_gregset): Make global.  Handle 32-bit register
	sizes.
	(mips64_fill_fpregset): Make global.  Use gdb_byte.  Handle
	FP regsets properly.
This commit is contained in:
Daniel Jacobowitz
2006-03-15 17:13:36 +00:00
parent 9f62d0e212
commit d37eb719b8
5 changed files with 425 additions and 137 deletions
Download Patch File Download Diff File Expand all files Collapse all files

259
gdb/mips-linux-tdep.c
View File

@@ -33,37 +33,7 @@
#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 "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
@@ -99,7 +69,7 @@ mips_linux_get_longjmp_target (CORE_ADDR *pc)
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);
@@ -107,11 +77,11 @@ supply_32bit_reg (int regnum, const void *addr)
/* 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);
@@ -142,16 +112,16 @@ mips_supply_gregset (elf_gregset_t *gregsetp)
/* 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);
@@ -195,8 +165,8 @@ mips_fill_gregset (elf_gregset_t *gregsetp, int regno)
/* 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];
@@ -220,8 +190,8 @@ mips_supply_fpregset (elf_fpregset_t *fpregsetp)
/* 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;
@@ -284,37 +254,6 @@ mips_linux_register_addr (int regno, CORE_ADDR blockend)
/* 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
@@ -343,39 +282,49 @@ mips64_linux_get_longjmp_target (CORE_ADDR *pc)
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. */
static void
/* 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. */
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));
supply_64bit_reg (regi - MIPS64_EF_REG0, (gdb_byte *)(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));
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));
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 (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);
@@ -385,9 +334,9 @@ mips64_supply_gregset (mips64_elf_gregset_t *gregsetp)
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;
@@ -412,13 +361,8 @@ mips64_fill_gregset (mips64_elf_gregset_t *gregsetp, int regno)
}
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;
@@ -435,52 +379,97 @@ mips64_fill_gregset (mips64_elf_gregset_t *gregsetp, int regno)
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);
/* 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));
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));
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);
/* 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)
{
@@ -488,8 +477,10 @@ mips64_fill_fpregset (mips64_elf_fpregset_t *fpregsetp, int regno)
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));
}
}
@@ -537,8 +528,8 @@ static void
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;
@@ -1088,7 +1079,7 @@ mips_linux_n32n64_sigframe_init (const struct tramp_frame *self,
/* 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);
@@ -1097,7 +1088,7 @@ supply_gregset (elf_gregset_t *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);
@@ -1108,7 +1099,7 @@ fill_gregset (elf_gregset_t *gregsetp, int 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);
@@ -1120,7 +1111,7 @@ supply_fpregset (elf_fpregset_t *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);