diff options
Diffstat (limited to 'bin86-0.3/as/asm/shdouble.asm')
| -rw-r--r-- | bin86-0.3/as/asm/shdouble.asm | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/bin86-0.3/as/asm/shdouble.asm b/bin86-0.3/as/asm/shdouble.asm new file mode 100644 index 0000000..1080ece --- /dev/null +++ b/bin86-0.3/as/asm/shdouble.asm @@ -0,0 +1,34 @@ +; SHDOUBLE.ASM + +ILLEGALS EQU 1 + +; 0F A4 SHLD r/m16,r16,imm8 3/7 +; 0F A4 SHLD r/m32,r32,imm8 3/7 +; 0F A5 SHLD r/m16,r16,CL 3/7 +; 0F A5 SHLD r/m32,r32,CL 3/7 + +; 0F AC SHRD r/m16,r16,imm8 3/7 +; 0F AC SHRD r/m32,r32,imm8 3/7 +; 0F AD SHRD r/m16,r16,CL 3/7 +; 0F AD SHRD r/m32,r32,CL 3/7 + +IF ILLEGALS + SHLD AL,BL,8 ; byte size + SHLD AX,8,8 ; immediate source + SHLD AX,DS,8 ; segment register + SHLD AX,[BX],8 ; non-register source + SHLD AX,BX,256 ; shift count too big + SHLD AL,BL,8 ; byte size +ENDIF + + SHLD BX,CX,3 + SHLD EDX,ESI,1 + SHLD CX,BX,CL + SHLD ESI,EDX,1 + SHLD [BX],CX,3 + SHLD [BX],ECX,1 + SHLD [SI],BX,CL + SHLD [SI],EBX,CL + + SHRD BX,CX,3 + SHRD CX,BX,CL |