#include "defs.h"
#include "gdb_string.h"
#include "frame.h"
#include "inferior.h"
#include "gdbcore.h"
#include "objfiles.h"
#include "target.h"
#include "floatformat.h"
#include "symfile.h"
#include "symtab.h"
#include "gdbcmd.h"
#include "command.h"
#include "arch-utils.h"
#include "regcache.h"
#include "doublest.h"
#include "value.h"
#include "gdb_assert.h"
#include "reggroups.h"
#include "dummy-frame.h"
#include "osabi.h"
#include "bfd.h"
#include "elf-bfd.h"
#include "i386-tdep.h"
#include "i387-tdep.h"
static char *i386_register_names[] =
{
"eax", "ecx", "edx", "ebx",
"esp", "ebp", "esi", "edi",
"eip", "eflags", "cs", "ss",
"ds", "es", "fs", "gs",
"st0", "st1", "st2", "st3",
"st4", "st5", "st6", "st7",
"fctrl", "fstat", "ftag", "fiseg",
"fioff", "foseg", "fooff", "fop",
"xmm0", "xmm1", "xmm2", "xmm3",
"xmm4", "xmm5", "xmm6", "xmm7",
"mxcsr"
};
static char *i386_mmx_names[] =
{
"mm0", "mm1", "mm2", "mm3",
"mm4", "mm5", "mm6", "mm7"
};
static const int mmx_num_regs = (sizeof (i386_mmx_names)
/ sizeof (i386_mmx_names[0]));
#define MM0_REGNUM (NUM_REGS)
static int
i386_mmx_regnum_p (int reg)
{
return (reg >= MM0_REGNUM && reg < MM0_REGNUM + mmx_num_regs);
}
int
i386_fp_regnum_p (int regnum)
{
return (regnum < NUM_REGS
&& (FP0_REGNUM && FP0_REGNUM <= (regnum) && (regnum) < FPC_REGNUM));
}
int
i386_fpc_regnum_p (int regnum)
{
return (regnum < NUM_REGS
&& (FPC_REGNUM <= (regnum) && (regnum) < XMM0_REGNUM));
}
int
i386_sse_regnum_p (int regnum)
{
return (regnum < NUM_REGS
&& (XMM0_REGNUM <= (regnum) && (regnum) < MXCSR_REGNUM));
}
int
i386_mxcsr_regnum_p (int regnum)
{
return (regnum < NUM_REGS
&& (regnum == MXCSR_REGNUM));
}
const char *
i386_register_name (int reg)
{
if (reg < 0)
return NULL;
if (i386_mmx_regnum_p (reg))
return i386_mmx_names[reg - MM0_REGNUM];
if (reg >= sizeof (i386_register_names) / sizeof (*i386_register_names))
return NULL;
return i386_register_names[reg];
}
static int
i386_stab_reg_to_regnum (int reg)
{
if (reg >= 0 && reg <= 7)
{
return reg;
}
else if (reg >= 12 && reg <= 19)
{
return reg - 12 + FP0_REGNUM;
}
else if (reg >= 21 && reg <= 28)
{
return reg - 21 + XMM0_REGNUM;
}
else if (reg >= 29 && reg <= 36)
{
return reg - 29 + MM0_REGNUM;
}
return NUM_REGS + NUM_PSEUDO_REGS;
}
static int
i386_dwarf_reg_to_regnum (int reg)
{
if (reg >= 0 && reg <= 9)
{
return reg;
}
else if (reg >= 11 && reg <= 18)
{
return reg - 11 + FP0_REGNUM;
}
else if (reg >= 21)
{
return i386_stab_reg_to_regnum (reg);
}
return NUM_REGS + NUM_PSEUDO_REGS;
}
static const char att_flavor[] = "att";
static const char intel_flavor[] = "intel";
static const char *valid_flavors[] =
{
att_flavor,
intel_flavor,
NULL
};
static const char *disassembly_flavor = att_flavor;
#define CODESTREAM_BUFSIZ 1
static CORE_ADDR codestream_next_addr;
static CORE_ADDR codestream_addr;
static unsigned char codestream_buf[CODESTREAM_BUFSIZ];
static int codestream_off;
static int codestream_cnt;
#define codestream_tell() (codestream_addr + codestream_off)
#define codestream_peek() \
(codestream_cnt == 0 ? \
codestream_fill(1) : codestream_buf[codestream_off])
#define codestream_get() \
(codestream_cnt-- == 0 ? \
codestream_fill(0) : codestream_buf[codestream_off++])
static unsigned char
codestream_fill (int peek_flag)
{
codestream_addr = codestream_next_addr;
codestream_next_addr += CODESTREAM_BUFSIZ;
codestream_off = 0;
codestream_cnt = CODESTREAM_BUFSIZ;
read_memory (codestream_addr, (char *) codestream_buf, CODESTREAM_BUFSIZ);
if (peek_flag)
return (codestream_peek ());
else
return (codestream_get ());
}
static void
codestream_seek (CORE_ADDR place)
{
codestream_next_addr = place / CODESTREAM_BUFSIZ;
codestream_next_addr *= CODESTREAM_BUFSIZ;
codestream_cnt = 0;
codestream_fill (1);
while (codestream_tell () != place)
codestream_get ();
}
static void
codestream_read (unsigned char *buf, int count)
{
unsigned char *p;
int i;
p = buf;
for (i = 0; i < count; i++)
*p++ = codestream_get ();
}
static void
i386_follow_jump (void)
{
unsigned char buf[4];
long delta;
int data16;
CORE_ADDR pos;
pos = codestream_tell ();
data16 = 0;
if (codestream_peek () == 0x66)
{
codestream_get ();
data16 = 1;
}
switch (codestream_get ())
{
case 0xe9:
if (data16)
{
codestream_read (buf, 2);
delta = extract_signed_integer (buf, 2);
pos += delta + 4;
}
else
{
codestream_read (buf, 4);
delta = extract_signed_integer (buf, 4);
pos += delta + 5;
}
break;
case 0xeb:
codestream_read (buf, 1);
delta = extract_signed_integer (buf, 1);
pos += delta + 2;
break;
}
codestream_seek (pos);
}
static long
i386_get_frame_setup (CORE_ADDR pc)
{
unsigned char op;
codestream_seek (pc);
i386_follow_jump ();
op = codestream_get ();
if (op == 0x58)
{
CORE_ADDR pos;
unsigned char buf[4];
static unsigned char proto1[3] = { 0x87, 0x04, 0x24 };
static unsigned char proto2[4] = { 0x87, 0x44, 0x24, 0x00 };
pos = codestream_tell ();
codestream_read (buf, 4);
if (memcmp (buf, proto1, 3) == 0)
pos += 3;
else if (memcmp (buf, proto2, 4) == 0)
pos += 4;
codestream_seek (pos);
op = codestream_get ();
}
if (op == 0x68 || op == 0x6a)
{
CORE_ADDR pos;
unsigned char buf[8];
pos = codestream_tell ();
if (op == 0x68)
pos += 4;
else
pos += 1;
codestream_seek (pos);
codestream_read (buf, sizeof (buf));
if (buf[0] == 0xe8 && buf[6] == 0xc4 && buf[7] == 0x4)
pos += sizeof (buf);
codestream_seek (pos);
op = codestream_get ();
}
if (op == 0x55)
{
switch (codestream_get ())
{
case 0x8b:
if (codestream_get () != 0xec)
return -1;
break;
case 0x89:
if (codestream_get () != 0xe5)
return -1;
break;
default:
return -1;
}
op = codestream_peek ();
if (op == 0x83)
{
codestream_get ();
if (codestream_get () != 0xec)
{
codestream_seek (codestream_tell () - 2);
return 0;
}
return (codestream_get ());
}
else if (op == 0x81)
{
char buf[4];
codestream_get ();
if (codestream_get () != 0xec)
{
codestream_seek (codestream_tell () - 2);
return 0;
}
codestream_read ((unsigned char *) buf, 4);
return extract_signed_integer (buf, 4);
}
else
{
return 0;
}
}
else if (op == 0xc8)
{
char buf[2];
codestream_read ((unsigned char *) buf, 2);
codestream_get ();
return extract_unsigned_integer (buf, 2);
}
return (-1);
}
int
i386_frameless_signal_p (struct frame_info *frame)
{
return (get_next_frame (frame)
&& get_frame_type (get_next_frame (frame)) == SIGTRAMP_FRAME
&& (frameless_look_for_prologue (frame)
|| get_frame_pc (frame) == get_pc_function_start (get_frame_pc (frame))));
}
static CORE_ADDR
i386_frame_chain (struct frame_info *frame)
{
if (pc_in_dummy_frame (get_frame_pc (frame)))
return get_frame_base (frame);
if (get_frame_type (frame) == SIGTRAMP_FRAME
|| i386_frameless_signal_p (frame))
return get_frame_base (frame);
if (! inside_entry_file (get_frame_pc (frame)))
return read_memory_unsigned_integer (get_frame_base (frame), 4);
return 0;
}
static int
i386_frameless_function_invocation (struct frame_info *frame)
{
if (get_frame_type (frame) == SIGTRAMP_FRAME)
return 0;
return frameless_look_for_prologue (frame);
}
static CORE_ADDR
i386_sigtramp_saved_pc (struct frame_info *frame)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
CORE_ADDR addr;
addr = tdep->sigcontext_addr (frame);
return read_memory_unsigned_integer (addr + tdep->sc_pc_offset, 4);
}
static CORE_ADDR
i386_sigtramp_saved_sp (struct frame_info *frame)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
CORE_ADDR addr;
addr = tdep->sigcontext_addr (frame);
return read_memory_unsigned_integer (addr + tdep->sc_sp_offset, 4);
}
static CORE_ADDR
i386_frame_saved_pc (struct frame_info *frame)
{
if (pc_in_dummy_frame (get_frame_pc (frame)))
{
ULONGEST pc;
frame_unwind_unsigned_register (frame, PC_REGNUM, &pc);
return pc;
}
if (get_frame_type (frame) == SIGTRAMP_FRAME)
return i386_sigtramp_saved_pc (frame);
if (i386_frameless_signal_p (frame))
{
CORE_ADDR sp = i386_sigtramp_saved_sp (get_next_frame (frame));
return read_memory_unsigned_integer (sp, 4);
}
return read_memory_unsigned_integer (get_frame_base (frame) + 4, 4);
}
static CORE_ADDR
i386_saved_pc_after_call (struct frame_info *frame)
{
if (get_frame_type (frame) == SIGTRAMP_FRAME)
return i386_sigtramp_saved_pc (frame);
return read_memory_unsigned_integer (read_register (SP_REGNUM), 4);
}
static int
i386_frame_num_args (struct frame_info *fi)
{
#if 1
return -1;
#else
int retpc;
unsigned char op;
struct frame_info *pfi;
int frameless;
frameless = FRAMELESS_FUNCTION_INVOCATION (fi);
if (frameless)
return -1;
pfi = get_prev_frame (fi);
if (pfi == 0)
{
return -1;
}
else
{
retpc = pfi->pc;
op = read_memory_integer (retpc, 1);
if (op == 0x59)
return 1;
else if (op == 0x83)
{
op = read_memory_integer (retpc + 1, 1);
if (op == 0xc4)
return (read_memory_integer (retpc + 2, 1) & 0xff) / 4;
else
return 0;
}
else if (op == 0x81)
{
op = read_memory_integer (retpc + 1, 1);
if (op == 0xc4)
return read_memory_integer (retpc + 2, 4) / 4;
else
return 0;
}
else
{
return 0;
}
}
#endif
}
static void
i386_frame_init_saved_regs (struct frame_info *fip)
{
long locals = -1;
unsigned char op;
CORE_ADDR addr;
CORE_ADDR pc;
int i;
if (get_frame_saved_regs (fip))
return;
frame_saved_regs_zalloc (fip);
pc = get_pc_function_start (get_frame_pc (fip));
if (pc != 0)
locals = i386_get_frame_setup (pc);
if (locals >= 0)
{
addr = get_frame_base (fip) - 4 - locals;
for (i = 0; i < 8; i++)
{
op = codestream_get ();
if (op < 0x50 || op > 0x57)
break;
#ifdef I386_REGNO_TO_SYMMETRY
get_frame_saved_regs (fip)[I386_REGNO_TO_SYMMETRY (op - 0x50)] = addr;
#else
get_frame_saved_regs (fip)[op - 0x50] = addr;
#endif
addr -= 4;
}
}
get_frame_saved_regs (fip)[PC_REGNUM] = get_frame_base (fip) + 4;
get_frame_saved_regs (fip)[FP_REGNUM] = get_frame_base (fip);
}
CORE_ADDR
i386_skip_prologue (CORE_ADDR pc)
{
unsigned char op;
int i;
static unsigned char pic_pat[6] =
{ 0xe8, 0, 0, 0, 0,
0x5b,
};
CORE_ADDR pos;
if (i386_get_frame_setup (pc) < 0)
return (pc);
for (i = 0; i < 8; i++)
{
op = codestream_peek ();
if (op < 0x50 || op > 0x57)
break;
codestream_get ();
}
pos = codestream_tell ();
for (i = 0; i < 6; i++)
{
op = codestream_get ();
if (pic_pat[i] != op)
break;
}
if (i == 6)
{
unsigned char buf[4];
long delta = 6;
op = codestream_get ();
if (op == 0x89)
{
op = codestream_get ();
if (op == 0x5d)
{
delta += 3;
codestream_read (buf, 1);
}
else if (op == 0x9d)
{
delta += 6;
codestream_read (buf, 4);
}
else
delta = -1;
op = codestream_get ();
}
if (delta > 0 && op == 0x81 && codestream_get () == 0xc3)
{
pos += delta + 6;
}
}
codestream_seek (pos);
i386_follow_jump ();
return (codestream_tell ());
}
static const unsigned char *
i386_breakpoint_from_pc (CORE_ADDR *pc, int *len)
{
static unsigned char break_insn[] = { 0xcc };
*len = sizeof (break_insn);
return break_insn;
}
static CORE_ADDR
i386_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
{
char buf[4];
store_unsigned_integer (buf, 4, CALL_DUMMY_ADDRESS ());
write_memory (sp - 4, buf, 4);
return sp - 4;
}
static void
i386_do_pop_frame (struct frame_info *frame)
{
CORE_ADDR fp;
int regnum;
char regbuf[I386_MAX_REGISTER_SIZE];
fp = get_frame_base (frame);
i386_frame_init_saved_regs (frame);
for (regnum = 0; regnum < NUM_REGS; regnum++)
{
CORE_ADDR addr;
addr = get_frame_saved_regs (frame)[regnum];
if (addr)
{
read_memory (addr, regbuf, REGISTER_RAW_SIZE (regnum));
deprecated_write_register_gen (regnum, regbuf);
}
}
write_register (FP_REGNUM, read_memory_integer (fp, 4));
write_register (PC_REGNUM, read_memory_integer (fp + 4, 4));
write_register (SP_REGNUM, fp + 8);
flush_cached_frames ();
}
static void
i386_pop_frame (void)
{
generic_pop_current_frame (i386_do_pop_frame);
}
static int
i386_get_longjmp_target (CORE_ADDR *pc)
{
char buf[8];
CORE_ADDR sp, jb_addr;
int jb_pc_offset = gdbarch_tdep (current_gdbarch)->jb_pc_offset;
int len = TARGET_PTR_BIT / TARGET_CHAR_BIT;
if (jb_pc_offset == -1)
return 0;
sp = read_register (SP_REGNUM);
if (target_read_memory (sp + len, buf, len))
return 0;
jb_addr = extract_address (buf, len);
if (target_read_memory (jb_addr + jb_pc_offset, buf, len))
return 0;
*pc = extract_address (buf, len);
return 1;
}
static CORE_ADDR
i386_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
int struct_return, CORE_ADDR struct_addr)
{
sp = default_push_arguments (nargs, args, sp, struct_return, struct_addr);
if (struct_return)
{
char buf[4];
sp -= 4;
store_address (buf, 4, struct_addr);
write_memory (sp, buf, 4);
}
return sp;
}
static void
i386_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
{
}
#define LOW_RETURN_REGNUM 0
#define HIGH_RETURN_REGNUM 2
static void
i386_extract_return_value (struct type *type, struct regcache *regcache,
void *dst)
{
bfd_byte *valbuf = dst;
int len = TYPE_LENGTH (type);
char buf[I386_MAX_REGISTER_SIZE];
if (TYPE_CODE (type) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (type) == 1)
{
i386_extract_return_value (TYPE_FIELD_TYPE (type, 0), regcache, valbuf);
return;
}
if (TYPE_CODE (type) == TYPE_CODE_FLT)
{
if (FP0_REGNUM == 0)
{
warning ("Cannot find floating-point return value.");
memset (valbuf, 0, len);
return;
}
regcache_raw_read (regcache, FP0_REGNUM, buf);
convert_typed_floating (buf, builtin_type_i387_ext, valbuf, type);
}
else
{
int low_size = REGISTER_RAW_SIZE (LOW_RETURN_REGNUM);
int high_size = REGISTER_RAW_SIZE (HIGH_RETURN_REGNUM);
if (len <= low_size)
{
regcache_raw_read (regcache, LOW_RETURN_REGNUM, buf);
memcpy (valbuf, buf, len);
}
else if (len <= (low_size + high_size))
{
regcache_raw_read (regcache, LOW_RETURN_REGNUM, buf);
memcpy (valbuf, buf, low_size);
regcache_raw_read (regcache, HIGH_RETURN_REGNUM, buf);
memcpy (valbuf + low_size, buf, len - low_size);
}
else
internal_error (__FILE__, __LINE__,
"Cannot extract return value of %d bytes long.", len);
}
}
static void
i386_store_return_value (struct type *type, struct regcache *regcache,
const void *valbuf)
{
int len = TYPE_LENGTH (type);
if (TYPE_CODE (type) == TYPE_CODE_STRUCT
&& TYPE_NFIELDS (type) == 1)
{
i386_store_return_value (TYPE_FIELD_TYPE (type, 0), regcache, valbuf);
return;
}
if (TYPE_CODE (type) == TYPE_CODE_FLT)
{
ULONGEST fstat;
char buf[FPU_REG_RAW_SIZE];
if (FP0_REGNUM == 0)
{
warning ("Cannot set floating-point return value.");
return;
}
convert_typed_floating (valbuf, type, buf, builtin_type_i387_ext);
regcache_raw_write (regcache, FP0_REGNUM, buf);
regcache_raw_read_unsigned (regcache, FSTAT_REGNUM, &fstat);
fstat |= (7 << 11);
regcache_raw_write_unsigned (regcache, FSTAT_REGNUM, fstat);
regcache_raw_write_unsigned (regcache, FTAG_REGNUM, 0x3fff);
}
else
{
int low_size = REGISTER_RAW_SIZE (LOW_RETURN_REGNUM);
int high_size = REGISTER_RAW_SIZE (HIGH_RETURN_REGNUM);
if (len <= low_size)
regcache_raw_write_part (regcache, LOW_RETURN_REGNUM, 0, len, valbuf);
else if (len <= (low_size + high_size))
{
regcache_raw_write (regcache, LOW_RETURN_REGNUM, valbuf);
regcache_raw_write_part (regcache, HIGH_RETURN_REGNUM, 0,
len - low_size, (char *) valbuf + low_size);
}
else
internal_error (__FILE__, __LINE__,
"Cannot store return value of %d bytes long.", len);
}
}
static CORE_ADDR
i386_extract_struct_value_address (struct regcache *regcache)
{
ULONGEST addr;
regcache_raw_read_unsigned (regcache, LOW_RETURN_REGNUM, &addr);
return addr;
}
static const char default_struct_convention[] = "default";
static const char pcc_struct_convention[] = "pcc";
static const char reg_struct_convention[] = "reg";
static const char *valid_conventions[] =
{
default_struct_convention,
pcc_struct_convention,
reg_struct_convention,
NULL
};
static const char *struct_convention = default_struct_convention;
static int
i386_use_struct_convention (int gcc_p, struct type *type)
{
enum struct_return struct_return;
if (struct_convention == default_struct_convention)
struct_return = gdbarch_tdep (current_gdbarch)->struct_return;
else if (struct_convention == pcc_struct_convention)
struct_return = pcc_struct_return;
else
struct_return = reg_struct_return;
return generic_use_struct_convention (struct_return == reg_struct_return,
type);
}
static struct type *
i386_register_virtual_type (int regnum)
{
if (regnum == PC_REGNUM || regnum == FP_REGNUM || regnum == SP_REGNUM)
return lookup_pointer_type (builtin_type_void);
if (i386_fp_regnum_p (regnum))
return builtin_type_i387_ext;
if (i386_sse_regnum_p (regnum))
return builtin_type_vec128i;
if (i386_mmx_regnum_p (regnum))
return builtin_type_vec64i;
return builtin_type_int;
}
static int
mmx_regnum_to_fp_regnum (struct regcache *regcache, int regnum)
{
int mmxi;
ULONGEST fstat;
int tos;
int fpi;
mmxi = regnum - MM0_REGNUM;
regcache_raw_read_unsigned (regcache, FSTAT_REGNUM, &fstat);
tos = (fstat >> 11) & 0x7;
fpi = (mmxi + tos) % 8;
return (FP0_REGNUM + fpi);
}
static void
i386_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
int regnum, void *buf)
{
if (i386_mmx_regnum_p (regnum))
{
char *mmx_buf = alloca (MAX_REGISTER_RAW_SIZE);
int fpnum = mmx_regnum_to_fp_regnum (regcache, regnum);
regcache_raw_read (regcache, fpnum, mmx_buf);
memcpy (buf, mmx_buf, REGISTER_RAW_SIZE (regnum));
}
else
regcache_raw_read (regcache, regnum, buf);
}
static void
i386_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
int regnum, const void *buf)
{
if (i386_mmx_regnum_p (regnum))
{
char *mmx_buf = alloca (MAX_REGISTER_RAW_SIZE);
int fpnum = mmx_regnum_to_fp_regnum (regcache, regnum);
regcache_raw_read (regcache, fpnum, mmx_buf);
memcpy (mmx_buf, buf, REGISTER_RAW_SIZE (regnum));
regcache_raw_write (regcache, fpnum, mmx_buf);
}
else
regcache_raw_write (regcache, regnum, buf);
}
static int
i386_register_convertible (int regnum)
{
return i386_fp_regnum_p (regnum);
}
static void
i386_register_convert_to_virtual (int regnum, struct type *type,
char *from, char *to)
{
gdb_assert (i386_fp_regnum_p (regnum));
if (TYPE_CODE (type) != TYPE_CODE_FLT)
{
warning ("Cannot convert floating-point register value "
"to non-floating-point type.");
memset (to, 0, TYPE_LENGTH (type));
return;
}
convert_typed_floating (from, builtin_type_i387_ext, to, type);
}
static void
i386_register_convert_to_raw (struct type *type, int regnum,
char *from, char *to)
{
gdb_assert (i386_fp_regnum_p (regnum));
if (TYPE_CODE (type) != TYPE_CODE_FLT)
{
warning ("Cannot convert non-floating-point type "
"to floating-point register value.");
memset (to, 0, TYPE_LENGTH (type));
return;
}
convert_typed_floating (from, type, to, builtin_type_i387_ext);
}
#ifdef STATIC_TRANSFORM_NAME
char *
sunpro_static_transform_name (char *name)
{
char *p;
if (IS_STATIC_TRANSFORM_NAME (name))
{
p = strrchr (name, '.');
if (p != NULL)
name = p + 1;
}
return name;
}
#endif
CORE_ADDR
i386_pe_skip_trampoline_code (CORE_ADDR pc, char *name)
{
if (pc && read_memory_unsigned_integer (pc, 2) == 0x25ff)
{
unsigned long indirect = read_memory_unsigned_integer (pc + 2, 4);
struct minimal_symbol *indsym =
indirect ? lookup_minimal_symbol_by_pc (indirect) : 0;
char *symname = indsym ? SYMBOL_NAME (indsym) : 0;
if (symname)
{
if (strncmp (symname, "__imp_", 6) == 0
|| strncmp (symname, "_imp_", 5) == 0)
return name ? 1 : read_memory_unsigned_integer (indirect, 4);
}
}
return 0;
}
static int
i386_pc_in_sigtramp (CORE_ADDR pc, char *name)
{
return (name && strcmp ("_sigtramp", name) == 0);
}
static int
i386_print_insn (bfd_vma pc, disassemble_info *info)
{
gdb_assert (disassembly_flavor == att_flavor
|| disassembly_flavor == intel_flavor);
info->disassembler_options = (char *) disassembly_flavor;
info->mach = gdbarch_bfd_arch_info (current_gdbarch)->mach;
return print_insn_i386 (pc, info);
}
static int
i386_svr4_pc_in_sigtramp (CORE_ADDR pc, char *name)
{
return (name && (strcmp ("_sigreturn", name) == 0
|| strcmp ("_sigacthandler", name) == 0
|| strcmp ("sigvechandler", name) == 0));
}
static CORE_ADDR
i386_svr4_sigcontext_addr (struct frame_info *frame)
{
int sigcontext_offset = -1;
char *name = NULL;
find_pc_partial_function (get_frame_pc (frame), &name, NULL, NULL);
if (name)
{
if (strcmp (name, "_sigreturn") == 0)
sigcontext_offset = 132;
else if (strcmp (name, "_sigacthandler") == 0)
sigcontext_offset = 80;
else if (strcmp (name, "sigvechandler") == 0)
sigcontext_offset = 120;
}
gdb_assert (sigcontext_offset != -1);
if (get_next_frame (frame))
return get_frame_base (get_next_frame (frame)) + sigcontext_offset;
return read_register (SP_REGNUM) + sigcontext_offset;
}
static int
i386_go32_pc_in_sigtramp (CORE_ADDR pc, char *name)
{
return 0;
}
void
i386_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
set_gdbarch_stab_reg_to_regnum (gdbarch, i386_dwarf_reg_to_regnum);
}
void
i386_svr4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
i386_elf_init_abi (info, gdbarch);
set_gdbarch_in_solib_call_trampoline (gdbarch, in_plt_section);
set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
set_gdbarch_pc_in_sigtramp (gdbarch, i386_svr4_pc_in_sigtramp);
tdep->sigcontext_addr = i386_svr4_sigcontext_addr;
tdep->sc_pc_offset = 14 * 4;
tdep->sc_sp_offset = 7 * 4;
tdep->jb_pc_offset = 20;
}
static void
i386_go32_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
set_gdbarch_pc_in_sigtramp (gdbarch, i386_go32_pc_in_sigtramp);
tdep->jb_pc_offset = 36;
}
static void
i386_nw_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
tdep->jb_pc_offset = 24;
}
static struct reggroup *i386_sse_reggroup;
static struct reggroup *i386_mmx_reggroup;
static void
i386_init_reggroups (void)
{
i386_sse_reggroup = reggroup_new ("sse", USER_REGGROUP);
i386_mmx_reggroup = reggroup_new ("mmx", USER_REGGROUP);
}
static void
i386_add_reggroups (struct gdbarch *gdbarch)
{
reggroup_add (gdbarch, i386_sse_reggroup);
reggroup_add (gdbarch, i386_mmx_reggroup);
reggroup_add (gdbarch, general_reggroup);
reggroup_add (gdbarch, float_reggroup);
reggroup_add (gdbarch, all_reggroup);
reggroup_add (gdbarch, save_reggroup);
reggroup_add (gdbarch, restore_reggroup);
reggroup_add (gdbarch, vector_reggroup);
reggroup_add (gdbarch, system_reggroup);
}
int
i386_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
struct reggroup *group)
{
int sse_regnum_p = (i386_sse_regnum_p (regnum)
|| i386_mxcsr_regnum_p (regnum));
int fp_regnum_p = (i386_fp_regnum_p (regnum)
|| i386_fpc_regnum_p (regnum));
int mmx_regnum_p = (i386_mmx_regnum_p (regnum));
if (group == i386_mmx_reggroup)
return mmx_regnum_p;
if (group == i386_sse_reggroup)
return sse_regnum_p;
if (group == vector_reggroup)
return (mmx_regnum_p || sse_regnum_p);
if (group == float_reggroup)
return fp_regnum_p;
if (group == general_reggroup)
return (!fp_regnum_p && !mmx_regnum_p && !sse_regnum_p);
return default_register_reggroup_p (gdbarch, regnum, group);
}
static struct gdbarch *
i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
struct gdbarch_tdep *tdep;
struct gdbarch *gdbarch;
arches = gdbarch_list_lookup_by_info (arches, &info);
if (arches != NULL)
return arches->gdbarch;
tdep = XMALLOC (struct gdbarch_tdep);
gdbarch = gdbarch_alloc (&info, tdep);
set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default);
tdep->num_xmm_regs = 0;
tdep->jb_pc_offset = -1;
tdep->struct_return = pcc_struct_return;
tdep->sigtramp_start = 0;
tdep->sigtramp_end = 0;
tdep->sigcontext_addr = NULL;
tdep->sc_pc_offset = -1;
tdep->sc_sp_offset = -1;
set_gdbarch_long_double_format (gdbarch, &floatformat_i387_ext);
set_gdbarch_long_double_bit (gdbarch, 96);
set_gdbarch_num_regs (gdbarch, I386_NUM_GREGS + I386_NUM_FREGS);
set_gdbarch_sp_regnum (gdbarch, 4);
set_gdbarch_fp_regnum (gdbarch, 5);
set_gdbarch_pc_regnum (gdbarch, 8);
set_gdbarch_ps_regnum (gdbarch, 9);
set_gdbarch_fp0_regnum (gdbarch, 16);
set_gdbarch_stab_reg_to_regnum (gdbarch, i386_stab_reg_to_regnum);
set_gdbarch_sdb_reg_to_regnum (gdbarch, i386_stab_reg_to_regnum);
set_gdbarch_dwarf_reg_to_regnum (gdbarch, i386_dwarf_reg_to_regnum);
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, i386_dwarf_reg_to_regnum);
set_gdbarch_register_name (gdbarch, i386_register_name);
set_gdbarch_register_size (gdbarch, 4);
set_gdbarch_register_bytes (gdbarch, I386_SIZEOF_GREGS + I386_SIZEOF_FREGS);
set_gdbarch_max_register_raw_size (gdbarch, I386_MAX_REGISTER_SIZE);
set_gdbarch_max_register_virtual_size (gdbarch, I386_MAX_REGISTER_SIZE);
set_gdbarch_register_virtual_type (gdbarch, i386_register_virtual_type);
set_gdbarch_print_float_info (gdbarch, i387_print_float_info);
set_gdbarch_get_longjmp_target (gdbarch, i386_get_longjmp_target);
set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
set_gdbarch_call_dummy_start_offset (gdbarch, 0);
set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
set_gdbarch_call_dummy_length (gdbarch, 0);
set_gdbarch_call_dummy_p (gdbarch, 1);
set_gdbarch_call_dummy_words (gdbarch, NULL);
set_gdbarch_sizeof_call_dummy_words (gdbarch, 0);
set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy);
set_gdbarch_register_convertible (gdbarch, i386_register_convertible);
set_gdbarch_register_convert_to_virtual (gdbarch,
i386_register_convert_to_virtual);
set_gdbarch_register_convert_to_raw (gdbarch, i386_register_convert_to_raw);
set_gdbarch_parm_boundary (gdbarch, 32);
set_gdbarch_extract_return_value (gdbarch, i386_extract_return_value);
set_gdbarch_push_arguments (gdbarch, i386_push_arguments);
set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame);
set_gdbarch_push_return_address (gdbarch, i386_push_return_address);
set_gdbarch_pop_frame (gdbarch, i386_pop_frame);
set_gdbarch_store_struct_return (gdbarch, i386_store_struct_return);
set_gdbarch_store_return_value (gdbarch, i386_store_return_value);
set_gdbarch_extract_struct_value_address (gdbarch,
i386_extract_struct_value_address);
set_gdbarch_use_struct_convention (gdbarch, i386_use_struct_convention);
set_gdbarch_frame_init_saved_regs (gdbarch, i386_frame_init_saved_regs);
set_gdbarch_skip_prologue (gdbarch, i386_skip_prologue);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
set_gdbarch_breakpoint_from_pc (gdbarch, i386_breakpoint_from_pc);
set_gdbarch_decr_pc_after_break (gdbarch, 1);
set_gdbarch_function_start_offset (gdbarch, 0);
set_gdbarch_frame_args_skip (gdbarch, 8);
set_gdbarch_frameless_function_invocation (gdbarch,
i386_frameless_function_invocation);
set_gdbarch_frame_chain (gdbarch, i386_frame_chain);
set_gdbarch_frame_saved_pc (gdbarch, i386_frame_saved_pc);
set_gdbarch_saved_pc_after_call (gdbarch, i386_saved_pc_after_call);
set_gdbarch_frame_num_args (gdbarch, i386_frame_num_args);
set_gdbarch_pc_in_sigtramp (gdbarch, i386_pc_in_sigtramp);
set_gdbarch_num_pseudo_regs (gdbarch, mmx_num_regs);
set_gdbarch_pseudo_register_read (gdbarch, i386_pseudo_register_read);
set_gdbarch_pseudo_register_write (gdbarch, i386_pseudo_register_write);
set_gdbarch_print_insn (gdbarch, i386_print_insn);
i386_add_reggroups (gdbarch);
set_gdbarch_register_reggroup_p (gdbarch, i386_register_reggroup_p);
gdbarch_init_osabi (info, gdbarch);
return gdbarch;
}
static enum gdb_osabi
i386_coff_osabi_sniffer (bfd *abfd)
{
if (strcmp (bfd_get_target (abfd), "coff-go32-exe") == 0
|| strcmp (bfd_get_target (abfd), "coff-go32") == 0)
return GDB_OSABI_GO32;
return GDB_OSABI_UNKNOWN;
}
static enum gdb_osabi
i386_nlm_osabi_sniffer (bfd *abfd)
{
return GDB_OSABI_NETWARE;
}
void _initialize_i386_tdep (void);
void
_initialize_i386_tdep (void)
{
register_gdbarch_init (bfd_arch_i386, i386_gdbarch_init);
{
struct cmd_list_element *new_cmd;
new_cmd = add_set_enum_cmd ("disassembly-flavor", no_class,
valid_flavors,
&disassembly_flavor,
"\
Set the disassembly flavor, the valid values are \"att\" and \"intel\", \
and the default value is \"att\".",
&setlist);
add_show_from_set (new_cmd, &showlist);
}
{
struct cmd_list_element *new_cmd;
new_cmd = add_set_enum_cmd ("struct-convention", no_class,
valid_conventions,
&struct_convention, "\
Set the convention for returning small structs, valid values \
are \"default\", \"pcc\" and \"reg\", and the default value is \"default\".",
&setlist);
add_show_from_set (new_cmd, &showlist);
}
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
i386_coff_osabi_sniffer);
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_nlm_flavour,
i386_nlm_osabi_sniffer);
gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SVR4,
i386_svr4_init_abi);
gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_GO32,
i386_go32_init_abi);
gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_NETWARE,
i386_nw_init_abi);
i386_init_reggroups ();
}