80486DX2-66/86Box-fork
1
0
Fork 0
Code Issues Pull Requests Activity

Missing 64-bit old recompiler functions.

Browse Source
This commit is contained in:
OBattler
2021-09-17 19:29:20 +02:00
parent c35b7e21ba
commit edb949090c
1 changed files with 50 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
src/codegen/codegen_ops_x86-64.h
View File

@@ -4314,6 +4314,56 @@ static inline void FP_LOAD_REG_D(int reg, int *host_reg1, int *host_reg2)
*host_reg1 = REG_EBX;
}
static inline int64_t x87_fround16_64(double b)
{
int16_t a, c;
switch ((cpu_state.npxc >> 10) & 3)
{
case 0: /*Nearest*/
a = (int16_t)floor(b);
c = (int16_t)floor(b + 1.0);
if ((b - a) < (c - b))
return (int64_t) a;
else if ((b - a) > (c - b))
return (int64_t) c;
else
return (a & 1) ? c : a;
case 1: /*Down*/
return (int64_t)((int16_t)floor(b));
case 2: /*Up*/
return (int64_t)((int16_t)ceil(b));
case 3: /*Chop*/
return (int64_t)((int16_t)b);
}
return 0;
}
static inline int64_t x87_fround32_64(double b)
{
int32_t a, c;
switch ((cpu_state.npxc >> 10) & 3)
{
case 0: /*Nearest*/
a = (int32_t)floor(b);
c = (int32_t)floor(b + 1.0);
if ((b - a) < (c - b))
return (int64_t) a;
else if ((b - a) > (c - b))
return (int64_t) c;
else
return (a & 1) ? c : a;
case 1: /*Down*/
return (int64_t)((int32_t)floor(b));
case 2: /*Up*/
return (int64_t)((int32_t)ceil(b));
case 3: /*Chop*/
return (int64_t)((int32_t)b);
}
return 0;
}
static inline int64_t x87_fround(double b)
{
int64_t a, c;