diff options
Diffstat (limited to 'arch/x86/math-emu/div_small.S')
| -rw-r--r-- | arch/x86/math-emu/div_small.S | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/x86/math-emu/div_small.S b/arch/x86/math-emu/div_small.S new file mode 100644 index 000000000..637439bfe --- /dev/null +++ b/arch/x86/math-emu/div_small.S @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + .file "div_small.S" +/*---------------------------------------------------------------------------+ + | div_small.S | + | | + | Divide a 64 bit integer by a 32 bit integer & return remainder. | + | | + | Copyright (C) 1992,1995 | + | W. Metzenthen, 22 Parker St, Ormond, Vic 3163, | + | Australia. E-mail billm@jacobi.maths.monash.edu.au | + | | + | | + +---------------------------------------------------------------------------*/ + +/*---------------------------------------------------------------------------+ + | unsigned long FPU_div_small(unsigned long long *x, unsigned long y) | + +---------------------------------------------------------------------------*/ + +#include "fpu_emu.h" + +.text +SYM_FUNC_START(FPU_div_small) + pushl %ebp + movl %esp,%ebp + + pushl %esi + + movl PARAM1,%esi /* pointer to num */ + movl PARAM2,%ecx /* The denominator */ + + movl 4(%esi),%eax /* Get the current num msw */ + xorl %edx,%edx + divl %ecx + + movl %eax,4(%esi) + + movl (%esi),%eax /* Get the num lsw */ + divl %ecx + + movl %eax,(%esi) + + movl %edx,%eax /* Return the remainder in eax */ + + popl %esi + + leave + RET +SYM_FUNC_END(FPU_div_small) |