diff options
Diffstat (limited to 'src/libmp/386/mpvecsub-Darwin.s')
| -rw-r--r-- | src/libmp/386/mpvecsub-Darwin.s | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/src/libmp/386/mpvecsub-Darwin.s b/src/libmp/386/mpvecsub-Darwin.s deleted file mode 100644 index 0155e3ec..00000000 --- a/src/libmp/386/mpvecsub-Darwin.s +++ /dev/null @@ -1,60 +0,0 @@ -/* mpvecsub(mpdigit *a, int alen, mpdigit *b, int blen, mpdigit *diff) */ -/* diff[0:alen-1] = a[0:alen-1] - b[0:blen-1] */ -/* prereq: alen >= blen, diff has room for alen digits */ -/* (very old gnu assembler doesn't allow multiline comments) */ - -.text - -.p2align 2,0x90 -.globl _mpvecsub -_mpvecsub: - /* Prelude */ - pushl %ebp /* save on stack */ - pushl %ebx - pushl %esi - pushl %edi - - leal 20(%esp), %ebp /* %ebp = FP for now */ - movl 0(%ebp), %esi /* a */ - movl 8(%ebp), %ebx /* b */ - movl 4(%ebp), %edx /* alen */ - movl 12(%ebp), %ecx /* blen */ - movl 16(%ebp), %edi /* diff */ - - subl %ecx,%edx - xorl %ebp,%ebp /* this also sets carry to 0 */ - - /* skip subraction if b is zero */ - testl %ecx,%ecx - jz 2f - - /* diff[0:blen-1],borrow = a[0:blen-1] - b[0:blen-1] */ -1: - movl (%esi, %ebp, 4), %eax - sbbl (%ebx, %ebp, 4), %eax - movl %eax, (%edi, %ebp, 4) - incl %ebp - loop 1b - -2: - incl %edx - movl %edx,%ecx - loop 3f - jmp 4f - - /* diff[blen:alen-1] = a[blen:alen-1] - 0 */ -3: - movl (%esi, %ebp, 4), %eax - sbbl $0, %eax - movl %eax, (%edi, %ebp, 4) - incl %ebp - loop 3b - -4: - /* Postlude */ - popl %edi - popl %esi - popl %ebx - popl %ebp - ret - |