diff options
| -rw-r--r-- | lib/system/arithm.nim | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/lib/system/arithm.nim b/lib/system/arithm.nim index bb15360fd..7672947cd 100644 --- a/lib/system/arithm.nim +++ b/lib/system/arithm.nim @@ -114,63 +114,69 @@ when asmVersion and not defined(gcc) and not defined(llvm_gcc): proc addInt(a, b: int): int {.compilerProc, asmNoStackFrame.} = # a in eax, and b in edx asm """ - mov eax, `a` - add eax, `b` + mov eax, ecx + add eax, edx jno theEnd call `raiseOverflow` theEnd: + ret """ proc subInt(a, b: int): int {.compilerProc, asmNoStackFrame.} = asm """ - mov eax, `a` - sub eax, `b` + mov eax, ecx + sub eax, edx jno theEnd call `raiseOverflow` theEnd: + ret """ proc negInt(a: int): int {.compilerProc, asmNoStackFrame.} = asm """ - mov eax, `a` + mov eax, ecx neg eax jno theEnd call `raiseOverflow` theEnd: + ret """ proc divInt(a, b: int): int {.compilerProc, asmNoStackFrame.} = asm """ - mov eax, `a` - mov ecx, `b` + mov eax, ecx + mov ecx, edx xor edx, edx idiv ecx jno theEnd call `raiseOverflow` theEnd: + ret """ proc modInt(a, b: int): int {.compilerProc, asmNoStackFrame.} = asm """ - mov eax, `a` - mov ecx, `b` + mov eax, ecx + mov ecx, edx xor edx, edx idiv ecx jno theEnd call `raiseOverflow` theEnd: mov eax, edx + ret """ proc mulInt(a, b: int): int {.compilerProc, asmNoStackFrame.} = asm """ - mov eax, `a` - mov ecx, `b` + mov eax, ecx + mov ecx, edx xor edx, edx imul ecx jno theEnd call `raiseOverflow` theEnd: + ret """ elif false: # asmVersion and (defined(gcc) or defined(llvm_gcc)): |