#include "server.h"
#include "linux-low.h"
#ifdef HAVE_SYS_REG_H
#include <sys/reg.h>
#endif
#define m68k_num_regs 29
#define m68k_num_gregs 18
static int m68k_regmap[] =
{
#ifdef PT_D0
PT_D0 * 4, PT_D1 * 4, PT_D2 * 4, PT_D3 * 4,
PT_D4 * 4, PT_D5 * 4, PT_D6 * 4, PT_D7 * 4,
PT_A0 * 4, PT_A1 * 4, PT_A2 * 4, PT_A3 * 4,
PT_A4 * 4, PT_A5 * 4, PT_A6 * 4, PT_USP * 4,
PT_SR * 4, PT_PC * 4,
#else
14 * 4, 0 * 4, 1 * 4, 2 * 4, 3 * 4, 4 * 4, 5 * 4, 6 * 4,
7 * 4, 8 * 4, 9 * 4, 10 * 4, 11 * 4, 12 * 4, 13 * 4, 15 * 4,
17 * 4, 18 * 4,
#endif
#ifdef PT_FP0
PT_FP0 * 4, PT_FP1 * 4, PT_FP2 * 4, PT_FP3 * 4,
PT_FP4 * 4, PT_FP5 * 4, PT_FP6 * 4, PT_FP7 * 4,
PT_FPCR * 4, PT_FPSR * 4, PT_FPIAR * 4
#else
21 * 4, 24 * 4, 27 * 4, 30 * 4, 33 * 4, 36 * 4,
39 * 4, 42 * 4, 45 * 4, 46 * 4, 47 * 4
#endif
};
static int
m68k_cannot_store_register (int regno)
{
return (regno >= m68k_num_regs);
}
static int
m68k_cannot_fetch_register (int regno)
{
return (regno >= m68k_num_regs);
}
#ifdef HAVE_PTRACE_GETREGS
#include <sys/procfs.h>
#include <sys/ptrace.h>
static void
m68k_fill_gregset (void *buf)
{
int i;
for (i = 0; i < m68k_num_gregs; i++)
collect_register (i, (char *) buf + m68k_regmap[i]);
}
static void
m68k_store_gregset (const void *buf)
{
int i;
for (i = 0; i < m68k_num_gregs; i++)
supply_register (i, (const char *) buf + m68k_regmap[i]);
}
static void
m68k_fill_fpregset (void *buf)
{
int i;
for (i = m68k_num_gregs; i < m68k_num_regs; i++)
collect_register (i, ((char *) buf
+ (m68k_regmap[i] - m68k_regmap[m68k_num_gregs])));
}
static void
m68k_store_fpregset (const void *buf)
{
int i;
for (i = m68k_num_gregs; i < m68k_num_regs; i++)
supply_register (i, ((const char *) buf
+ (m68k_regmap[i] - m68k_regmap[m68k_num_gregs])));
}
#endif
struct regset_info target_regsets[] = {
#ifdef HAVE_PTRACE_GETREGS
{ PTRACE_GETREGS, PTRACE_SETREGS, sizeof (elf_gregset_t),
GENERAL_REGS,
m68k_fill_gregset, m68k_store_gregset },
{ PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof (elf_fpregset_t),
FP_REGS,
m68k_fill_fpregset, m68k_store_fpregset },
#endif
{ 0, 0, -1, -1, NULL, NULL }
};
static const unsigned char m68k_breakpoint[] = { 0x4E, 0x4F };
#define m68k_breakpoint_len 2
static CORE_ADDR
m68k_get_pc ()
{
unsigned long pc;
collect_register_by_name ("pc", &pc);
return pc;
}
static void
m68k_set_pc (CORE_ADDR value)
{
unsigned long newpc = value;
supply_register_by_name ("pc", &newpc);
}
static int
m68k_breakpoint_at (CORE_ADDR pc)
{
unsigned char c[2];
read_inferior_memory (pc, c, 2);
if (c[0] == 0x4E && c[1] == 0x4F)
return 1;
return 0;
}
struct linux_target_ops the_low_target = {
m68k_num_regs,
m68k_regmap,
m68k_cannot_fetch_register,
m68k_cannot_store_register,
m68k_get_pc,
m68k_set_pc,
m68k_breakpoint,
m68k_breakpoint_len,
NULL,
2,
m68k_breakpoint_at,
};