mirrors/Nim
1
0
Fork 0
mirror of https://github.com/nim-lang/Nim.git synced 2026-01-25 22:06:14 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #1495 from barcharcraz/fix1491

Browse Source 
fixed #1491
This commit is contained in:
Andreas Rumpf
2014-08-20 00:42:42 +02:00
parent 0f720a83d5 5b326269c3
commit daa8b559b6
1 changed files with 17 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
lib/system/arithm.nim
View File

@@ -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)):