pandory500/redquark-amiberry-rb
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Fixed JIT FPU bugs (Starstruck demo corruption, etc.)

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This commit is contained in:
Dimitris Panokostas 2018-02-08 20:40:37 +01:00
parent 88316d7916
commit b9dc57af87
14 changed files with 1735 additions and 121 deletions
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29
src/jit/compemu_fpp.cpp
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@ -497,6 +497,11 @@ void comp_fpp_opp (uae_u32 opcode, uae_u16 extra)
int source = (extra >> 13) & 7;
int opmode = extra & 0x7f;
if (special_mem) {
FAIL(1);
return;
}
if (!currprefs.compfpu) {
FAIL (1);
return;
@ -525,6 +530,25 @@ void comp_fpp_opp (uae_u32 opcode, uae_u16 extra)
if (extra & 0x1000) { /* FPCR */
uae_u32 val = comp_get_ilong ((m68k_pc_offset += 4) - 4);
mov_l_mi (uae_p32(&regs.fpcr), val);
switch(val & 0x30) {
case 0x00:
// round to nearest
roundingmode(0x00000000);
break;
case 0x10:
// round toward minus infinity
roundingmode(0x00800000);
break;
case 0x01:
// round toward plus infinity
roundingmode(0x00400000);
break;
case 0x11:
default:
// round towards zero
roundingmode(0x00c00000);
break;
}
return;
}
if (extra & 0x0800) { /* FPSR */
@ -875,11 +899,6 @@ void comp_fpp_opp (uae_u32 opcode, uae_u16 extra)
case 0x37:
FAIL (1);
return;
// if (dreg == (extra & 7))
// ffunc_rr (sin, dreg, sreg);
// else
// fsincos_rr (dreg, extra & 7, sreg);
// break;
case 0x38: /* FCMP */
fmov_rr (FP_RESULT, dreg);
fsub_rr (FP_RESULT, sreg);