diff options
Diffstat (limited to 'mdk-stage1/dietlibc/i386/ltostr.S')
| -rw-r--r-- | mdk-stage1/dietlibc/i386/ltostr.S | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/i386/ltostr.S b/mdk-stage1/dietlibc/i386/ltostr.S new file mode 100644 index 000000000..ddf85a4f6 --- /dev/null +++ b/mdk-stage1/dietlibc/i386/ltostr.S @@ -0,0 +1,62 @@ +/* + Copyright (C) 2002 Thomas M. Ogrisegg + + __ltostr.S -- convert an integer into a string + + %eax = dividend + %ebx = divisor + %ecx = size of output-buffer + %edi = output-buffer + %ebp = if uppercase is set, then %ebp is 'A'-10 else %ebp is 'a'-10 + +*/ + +.text +.globl __ltostr +__ltostr: + pushl %esi + pushl %edi # destination + pushl %ebp + pushl %ebx + movl %esp, %eax + movl 0x14(%eax), %edi + movl 0x18(%eax), %ecx # size + movl 0x20(%eax), %ebx # divisor + movl 0x1c(%eax), %eax # dividend + decl %ecx + movl %ecx, %esi + movl $('A'-0xa), %ebp + xorl %edx, %edx # must be 0 -- used by idiv + cmpl $0x0, 36(%esp) # check for uppercase + jnz .Lnext + addl $0x20, %ebp # set lowercase +.Lnext: + idiv %ebx, %eax + cmpb $0x9, %dl + jg .Lnext2 + addb $'0', %dl + jmp .Lstos +.Lnext2: + addl %ebp, %edx +.Lstos: + movb %dl, (%edi, %ecx) + xorl %edx, %edx + decl %ecx + jz .Lout + orl %eax, %eax + jnz .Lnext +.Lout: + cld + movl %esi, %ebx + leal 1(%edi, %ecx), %esi + subl %ebx, %ecx + negl %ecx + movl %ecx, %eax + repnz movsb + movb $0x0, (%edi) + popl %ebx + popl %ebp + popl %edi + popl %esi + ret +.size __ltostr, . - __ltostr |