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more div stuff

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--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%4087
This commit is contained in:
Borja Ferrer 2006-09-20 22:17:52 +00:00
parent 82cb24e40b
commit fa75903642
2 changed files with 90 additions and 0 deletions
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71
sourcepawn/vm/jit/x86/jit_x86.cpp
View File

@ -1215,6 +1215,57 @@ inline void WriteOp_Stack(JitWriter *jit)
Write_CheckMargin_Stack(jit); Write_CheckMargin_Stack(jit);
} }
inline void WriteOp_SDiv(JitWriter *jit)
{
//mov ecx, edx
//mov edx, eax
//sar edx, 31
//idiv ecx
IA32_Mov_Rm_Reg(jit, AMX_REG_TMP, AMX_REG_ALT, MOD_REG);
Write_Check_DivZero(jit, AMX_REG_TMP);
IA32_Mov_Rm_Reg(jit, AMX_REG_ALT, AMX_REG_PRI, MOD_REG);
IA32_Sar_Rm_Imm8(jit, AMX_REG_ALT, 31, MOD_REG);
IA32_IDiv_Rm(jit, AMX_REG_TMP, MOD_REG);
}
inline void WriteOp_SDiv_Alt(JitWriter *jit)
{
//mov ecx, eax
//mov eax, edx
//sar edx, 31
//idiv ecx
IA32_Mov_Rm_Reg(jit, AMX_REG_TMP, AMX_REG_PRI, MOD_REG);
Write_Check_DivZero(jit, AMX_REG_TMP);
IA32_Mov_Rm_Reg(jit, AMX_REG_PRI, AMX_REG_ALT, MOD_REG);
IA32_Sar_Rm_Imm8(jit, AMX_REG_ALT, 31, MOD_REG);
IA32_IDiv_Rm(jit, AMX_REG_TMP, MOD_REG);
}
inline void WriteOp_UDiv(JitWriter *jit)
{
//mov ecx, edx
//xor edx, edx
//div ecx
IA32_Mov_Rm_Reg(jit, AMX_REG_TMP, AMX_REG_ALT, MOD_REG);
Write_Check_DivZero(jit, AMX_REG_TMP);
IA32_Xor_Rm_Reg(jit, AMX_REG_ALT, AMX_REG_ALT, MOD_REG);
IA32_Div_Rm(jit, AMX_REG_TMP, MOD_REG);
}
inline void WriteOp_UDiv_Alt(JitWriter *jit)
{
//mov ecx, eax
//mov eax, edx
//xor edx, edx
//div ecx
IA32_Mov_Rm_Reg(jit, AMX_REG_TMP, AMX_REG_PRI, MOD_REG);
Write_Check_DivZero(jit, AMX_REG_TMP);
IA32_Mov_Rm_Reg(jit, AMX_REG_PRI, AMX_REG_ALT, MOD_REG);
IA32_Xor_Rm_Reg(jit, AMX_REG_ALT, AMX_REG_ALT, MOD_REG);
IA32_Div_Rm(jit, AMX_REG_TMP, MOD_REG);
}
/************************************************* /*************************************************
************************************************* *************************************************
* JIT PROPER ************************************ * JIT PROPER ************************************
@ -1919,6 +1970,26 @@ IPluginContext *JITX86::CompileToContext(ICompilation *co, int *err)
WriteOp_Stack(jit); WriteOp_Stack(jit);
break; break;
} }
case OP_SDIV:
{
WriteOp_SDiv(jit);
break;
}
case OP_SDIV_ALT:
{
WriteOp_SDiv_Alt(jit);
break;
}
case OP_UDIV:
{
WriteOp_UDiv(jit);
break;
}
case OP_UDIV_ALT:
{
WriteOp_UDiv_Alt(jit);
break;
}
default: default:
{ {
AbortCompilation(co); AbortCompilation(co);

19
sourcepawn/vm/jit/x86/opcode_helpers.cpp
View File

@ -221,6 +221,25 @@ void Write_Check_VerifyAddr(JitWriter *jit, jit_uint8_t reg, bool firstcall)
} }
} }
void Write_CheckMargin_Stack(JitWriter *jit)
{
/* this is small, so we always inline it.
*/
//cmp ebp, [esi+stp]
//jle :continue
IA32_Cmp_Reg_Rm_Disp8(jit, AMX_REG_STK, AMX_REG_INFO, AMX_INFO_STACKTOP);
jitoffs_t jmp = IA32_Jump_Cond_Imm8(jit, CC_LE, 0);
if (!(((CompData *)jit->data)->inline_level & JIT_INLINE_ERRORCHECKS))
{
//sub esp, 4 - correct stack for returning to non-inlined JIT
IA32_Sub_Rm_Imm8(jit, REG_ESP, 4, MOD_REG);
}
Write_Error(jit, SP_ERR_STACKMIN);
//continue:
IA32_Send_Jump8_Here(jit, jmp);
}
void Macro_PushN_Addr(JitWriter *jit, int i) void Macro_PushN_Addr(JitWriter *jit, int i)
{ {
//push eax //push eax