diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:16:31 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:16:31 +0200 |
| commit | da957e111bb0c189a4a3bf8a00caaecb59ed94ca (patch) | |
| tree | 6916075fdd3e28869dcd3dfa2cf160a74d1cb02e /arch/i386/math-emu/round_Xsig.S | |
| parent | 2ec1df4130c60d1eb49dc0fa0ed15858fede6b05 (diff) | |
i386: move math-emu
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/i386/math-emu/round_Xsig.S')
| -rw-r--r-- | arch/i386/math-emu/round_Xsig.S | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/arch/i386/math-emu/round_Xsig.S b/arch/i386/math-emu/round_Xsig.S deleted file mode 100644 index bbe0e87718e..00000000000 --- a/arch/i386/math-emu/round_Xsig.S +++ /dev/null @@ -1,141 +0,0 @@ -/*---------------------------------------------------------------------------+ - | round_Xsig.S | - | | - | Copyright (C) 1992,1993,1994,1995 | - | W. Metzenthen, 22 Parker St, Ormond, Vic 3163, | - | Australia. E-mail billm@jacobi.maths.monash.edu.au | - | | - | Normalize and round a 12 byte quantity. | - | Call from C as: | - | int round_Xsig(Xsig *n) | - | | - | Normalize a 12 byte quantity. | - | Call from C as: | - | int norm_Xsig(Xsig *n) | - | | - | Each function returns the size of the shift (nr of bits). | - | | - +---------------------------------------------------------------------------*/ - .file "round_Xsig.S" - -#include "fpu_emu.h" - - -.text -ENTRY(round_Xsig) - pushl %ebp - movl %esp,%ebp - pushl %ebx /* Reserve some space */ - pushl %ebx - pushl %esi - - movl PARAM1,%esi - - movl 8(%esi),%edx - movl 4(%esi),%ebx - movl (%esi),%eax - - movl $0,-4(%ebp) - - orl %edx,%edx /* ms bits */ - js L_round /* Already normalized */ - jnz L_shift_1 /* Shift left 1 - 31 bits */ - - movl %ebx,%edx - movl %eax,%ebx - xorl %eax,%eax - movl $-32,-4(%ebp) - -/* We need to shift left by 1 - 31 bits */ -L_shift_1: - bsrl %edx,%ecx /* get the required shift in %ecx */ - subl $31,%ecx - negl %ecx - subl %ecx,-4(%ebp) - shld %cl,%ebx,%edx - shld %cl,%eax,%ebx - shl %cl,%eax - -L_round: - testl $0x80000000,%eax - jz L_exit - - addl $1,%ebx - adcl $0,%edx - jnz L_exit - - movl $0x80000000,%edx - incl -4(%ebp) - -L_exit: - movl %edx,8(%esi) - movl %ebx,4(%esi) - movl %eax,(%esi) - - movl -4(%ebp),%eax - - popl %esi - popl %ebx - leave - ret - - - - -ENTRY(norm_Xsig) - pushl %ebp - movl %esp,%ebp - pushl %ebx /* Reserve some space */ - pushl %ebx - pushl %esi - - movl PARAM1,%esi - - movl 8(%esi),%edx - movl 4(%esi),%ebx - movl (%esi),%eax - - movl $0,-4(%ebp) - - orl %edx,%edx /* ms bits */ - js L_n_exit /* Already normalized */ - jnz L_n_shift_1 /* Shift left 1 - 31 bits */ - - movl %ebx,%edx - movl %eax,%ebx - xorl %eax,%eax - movl $-32,-4(%ebp) - - orl %edx,%edx /* ms bits */ - js L_n_exit /* Normalized now */ - jnz L_n_shift_1 /* Shift left 1 - 31 bits */ - - movl %ebx,%edx - movl %eax,%ebx - xorl %eax,%eax - addl $-32,-4(%ebp) - jmp L_n_exit /* Might not be normalized, - but shift no more. */ - -/* We need to shift left by 1 - 31 bits */ -L_n_shift_1: - bsrl %edx,%ecx /* get the required shift in %ecx */ - subl $31,%ecx - negl %ecx - subl %ecx,-4(%ebp) - shld %cl,%ebx,%edx - shld %cl,%eax,%ebx - shl %cl,%eax - -L_n_exit: - movl %edx,8(%esi) - movl %ebx,4(%esi) - movl %eax,(%esi) - - movl -4(%ebp),%eax - - popl %esi - popl %ebx - leave - ret - |