#include "server.h"
#include "linux-low.h"
#include "i387-fp.h"
#ifdef HAVE_SYS_REG_H
#include <sys/reg.h>
#endif
#define i386_num_regs 16
static int i386_regmap[] =
{
EAX * 4, ECX * 4, EDX * 4, EBX * 4,
UESP * 4, EBP * 4, ESI * 4, EDI * 4,
EIP * 4, EFL * 4, CS * 4, SS * 4,
DS * 4, ES * 4, FS * 4, GS * 4
};
static int
i386_cannot_store_register (int regno)
{
return (regno >= i386_num_regs);
}
static int
i386_cannot_fetch_register (int regno)
{
return (regno >= i386_num_regs);
}
#ifdef HAVE_LINUX_REGSETS
#include <sys/procfs.h>
#include <sys/ptrace.h>
static void
i386_fill_gregset (void *buf)
{
int i;
for (i = 0; i < i386_num_regs; i++)
collect_register (i, ((char *) buf) + i386_regmap[i]);
collect_register_by_name ("orig_eax", ((char *) buf) + ORIG_EAX * 4);
}
static void
i386_store_gregset (const void *buf)
{
int i;
for (i = 0; i < i386_num_regs; i++)
supply_register (i, ((char *) buf) + i386_regmap[i]);
supply_register_by_name ("orig_eax", ((char *) buf) + ORIG_EAX * 4);
}
static void
i386_fill_fpregset (void *buf)
{
i387_cache_to_fsave (buf);
}
static void
i386_store_fpregset (const void *buf)
{
i387_fsave_to_cache (buf);
}
static void
i386_fill_fpxregset (void *buf)
{
i387_cache_to_fxsave (buf);
}
static void
i386_store_fpxregset (const void *buf)
{
i387_fxsave_to_cache (buf);
}
struct regset_info target_regsets[] = {
{ PTRACE_GETREGS, PTRACE_SETREGS, sizeof (elf_gregset_t),
GENERAL_REGS,
i386_fill_gregset, i386_store_gregset },
#ifdef HAVE_PTRACE_GETFPXREGS
{ PTRACE_GETFPXREGS, PTRACE_SETFPXREGS, sizeof (elf_fpxregset_t),
EXTENDED_REGS,
i386_fill_fpxregset, i386_store_fpxregset },
#endif
{ PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof (elf_fpregset_t),
FP_REGS,
i386_fill_fpregset, i386_store_fpregset },
{ 0, 0, -1, -1, NULL, NULL }
};
#endif
static const char i386_breakpoint[] = { 0xCC };
#define i386_breakpoint_len 1
extern int debug_threads;
static CORE_ADDR
i386_get_pc ()
{
unsigned long pc;
collect_register_by_name ("eip", &pc);
if (debug_threads)
fprintf (stderr, "stop pc (before any decrement) is %08lx\n", pc);
return pc;
}
static void
i386_set_pc (CORE_ADDR newpc)
{
if (debug_threads)
fprintf (stderr, "set pc to %08lx\n", (long) newpc);
supply_register_by_name ("eip", &newpc);
}
static int
i386_breakpoint_at (CORE_ADDR pc)
{
unsigned char c;
read_inferior_memory (pc, &c, 1);
if (c == 0xCC)
return 1;
return 0;
}
struct linux_target_ops the_low_target = {
i386_num_regs,
i386_regmap,
i386_cannot_fetch_register,
i386_cannot_store_register,
i386_get_pc,
i386_set_pc,
i386_breakpoint,
i386_breakpoint_len,
NULL,
1,
i386_breakpoint_at,
};