/* opcode=0xde */
void x86emuOp_esc_coprocess_de(u8 X86EMU_UNUSED(op1))
{
int mod, rl, rh;
uint destoffset = 0;
u8 stkelem = 0;
START_OF_INSTR();
FETCH_DECODE_MODRM(mod, rh, rl);
DECODE_PRINTINSTR32(x86emu_fpu_op_de_tab, mod, rh, rl);
switch (mod) {
case 0:
destoffset = decode_rm00_address(rl);
DECODE_PRINTF("\n");
break;
case 1:
destoffset = decode_rm01_address(rl);
DECODE_PRINTF("\n");
break;
case 2:
destoffset = decode_rm10_address(rl);
DECODE_PRINTF("\n");
break;
case 3: /* register to register */
stkelem = (u8)rl;
DECODE_PRINTF2("\tST(%d),ST\n", stkelem);
break;
}
#ifdef X86EMU_FPU_PRESENT
switch (mod) {
case 3:
switch (rh) {
case 0:
x86emu_fpu_R_faddp(stkelem, X86EMU_FPU_STKTOP);
break;
case 1:
x86emu_fpu_R_fmulp(stkelem, X86EMU_FPU_STKTOP);
break;
case 2:
x86emu_fpu_R_fcomp(stkelem, X86EMU_FPU_STKTOP);
break;
case 3:
if (stkelem == 1)
x86emu_fpu_R_fcompp(stkelem, X86EMU_FPU_STKTOP);
else
x86emu_fpu_illegal();
break;
case 4:
x86emu_fpu_R_fsubrp(stkelem, X86EMU_FPU_STKTOP);
break;
case 5:
x86emu_fpu_R_fsubp(stkelem, X86EMU_FPU_STKTOP);
break;
case 6:
x86emu_fpu_R_fdivrp(stkelem, X86EMU_FPU_STKTOP);
break;
case 7:
x86emu_fpu_R_fdivp(stkelem, X86EMU_FPU_STKTOP);
break;
}
break;
default:
switch (rh) {
case 0:
x86emu_fpu_M_fiadd(X86EMU_FPU_WORD, destoffset);
break;
case 1:
x86emu_fpu_M_fimul(X86EMU_FPU_WORD, destoffset);
break;
case 2:
x86emu_fpu_M_ficom(X86EMU_FPU_WORD, destoffset);
break;
case 3:
x86emu_fpu_M_ficomp(X86EMU_FPU_WORD, destoffset);
break;
case 4:
x86emu_fpu_M_fisub(X86EMU_FPU_WORD, destoffset);
break;
case 5:
x86emu_fpu_M_fisubr(X86EMU_FPU_WORD, destoffset);
break;
case 6:
x86emu_fpu_M_fidiv(X86EMU_FPU_WORD, destoffset);
break;
case 7:
x86emu_fpu_M_fidivr(X86EMU_FPU_WORD, destoffset);
break;
}
}
#else
(void)destoffset;
(void)stkelem;
#endif
DECODE_CLEAR_SEGOVR();
END_OF_INSTR_NO_TRACE();
}
/* opcode=0xdc */
void x86emuOp_esc_coprocess_dc(u8 X86EMU_UNUSED(op1))
{
int mod, rl, rh;
uint destoffset;
u8 stkelem;
START_OF_INSTR();
FETCH_DECODE_MODRM(mod, rh, rl);
DECODE_PRINTINSTR32(x86emu_fpu_op_dc_tab, mod, rh, rl);
switch (mod) {
case 0:
destoffset = decode_rm00_address(rl);
DECODE_PRINTF("\n");
break;
case 1:
destoffset = decode_rm01_address(rl);
DECODE_PRINTF("\n");
break;
case 2:
destoffset = decode_rm10_address(rl);
DECODE_PRINTF("\n");
break;
case 3: /* register to register */
stkelem = (u8)rl;
DECODE_PRINTF2("\tST(%d),ST\n", stkelem);
break;
}
#ifdef X86EMU_FPU_PRESENT
/* execute */
switch (mod) {
case 3:
switch (rh) {
case 0:
x86emu_fpu_R_fadd(stkelem, X86EMU_FPU_STKTOP);
break;
case 1:
x86emu_fpu_R_fmul(stkelem, X86EMU_FPU_STKTOP);
break;
case 2:
x86emu_fpu_R_fcom(stkelem, X86EMU_FPU_STKTOP);
break;
case 3:
x86emu_fpu_R_fcomp(stkelem, X86EMU_FPU_STKTOP);
break;
case 4:
x86emu_fpu_R_fsubr(stkelem, X86EMU_FPU_STKTOP);
break;
case 5:
x86emu_fpu_R_fsub(stkelem, X86EMU_FPU_STKTOP);
break;
case 6:
x86emu_fpu_R_fdivr(stkelem, X86EMU_FPU_STKTOP);
break;
case 7:
x86emu_fpu_R_fdiv(stkelem, X86EMU_FPU_STKTOP);
break;
}
break;
default:
switch (rh) {
case 0:
x86emu_fpu_M_fadd(X86EMU_FPU_DOUBLE, destoffset);
break;
case 1:
x86emu_fpu_M_fmul(X86EMU_FPU_DOUBLE, destoffset);
break;
case 2:
x86emu_fpu_M_fcom(X86EMU_FPU_DOUBLE, destoffset);
break;
case 3:
x86emu_fpu_M_fcomp(X86EMU_FPU_DOUBLE, destoffset);
break;
case 4:
x86emu_fpu_M_fsub(X86EMU_FPU_DOUBLE, destoffset);
break;
case 5:
x86emu_fpu_M_fsubr(X86EMU_FPU_DOUBLE, destoffset);
break;
case 6:
x86emu_fpu_M_fdiv(X86EMU_FPU_DOUBLE, destoffset);
break;
case 7:
x86emu_fpu_M_fdivr(X86EMU_FPU_DOUBLE, destoffset);
break;
}
}
#endif
DECODE_CLEAR_SEGOVR();
END_OF_INSTR_NO_TRACE();
}
