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winedbg: Implemented is_step_over method for x86-64 CPU.

This commit is contained in:
Eric Pouech 2010-02-03 21:47:57 +01:00 committed by Alexandre Julliard
parent 9ed8d56ed2
commit 4f4e38ce40
1 changed files with 55 additions and 2 deletions
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55
programs/winedbg/be_x86_64.c
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@ -164,8 +164,61 @@ static const struct dbg_internal_var* be_x86_64_init_registers(CONTEXT* ctx)
static unsigned be_x86_64_is_step_over_insn(const void* insn)
{
dbg_printf("not done step_over_insn\n");
BYTE ch;
for (;;)
{
if (!dbg_read_memory(insn, &ch, sizeof(ch))) return FALSE;
switch (ch)
{
/* Skip all prefixes */
case 0x2e: /* cs: */
case 0x36: /* ss: */
case 0x3e: /* ds: */
case 0x26: /* es: */
case 0x64: /* fs: */
case 0x65: /* gs: */
case 0x66: /* opcode size prefix */
case 0x67: /* addr size prefix */
case 0xf0: /* lock */
case 0xf2: /* repne */
case 0xf3: /* repe */
insn = (const char*)insn + 1;
continue;
/* Handle call instructions */
case 0xcd: /* int <intno> */
case 0xe8: /* call <offset> */
case 0x9a: /* lcall <seg>:<off> */
return TRUE;
case 0xff: /* call <regmodrm> */
if (!dbg_read_memory((const char*)insn + 1, &ch, sizeof(ch)))
return FALSE;
return (((ch & 0x38) == 0x10) || ((ch & 0x38) == 0x18));
/* Handle string instructions */
case 0x6c: /* insb */
case 0x6d: /* insw */
case 0x6e: /* outsb */
case 0x6f: /* outsw */
case 0xa4: /* movsb */
case 0xa5: /* movsw */
case 0xa6: /* cmpsb */
case 0xa7: /* cmpsw */
case 0xaa: /* stosb */
case 0xab: /* stosw */
case 0xac: /* lodsb */
case 0xad: /* lodsw */
case 0xae: /* scasb */
case 0xaf: /* scasw */
return TRUE;
default:
return FALSE;
}
}
}
static unsigned be_x86_64_is_function_return(const void* insn)