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| author | chandramouli narayanan <mouli@linux.intel.com> | 2012-06-25 12:34:46 -0700 |
|---|---|---|
| committer | chandramouli narayanan <mouli@linux.intel.com> | 2012-06-25 12:34:46 -0700 |
| commit | 5caee9aeaf89dbbc45269737cc1dac7de070b867 (patch) | |
| tree | 5284cfb67697c00d34cfca692e2da52f22e9716d /com32/lib/libgcc | |
| parent | c53187e1adc326c3246917cb936cbab020b4d820 (diff) | |
| download | syslinux-5caee9aeaf89dbbc45269737cc1dac7de070b867.tar.gz | |
This patch implements the setjmp/longjmp, memcpy, memmove, memset and mempcpy functions
as appropriate for the architecture. The code came from klibc. com32/lib has
i386 and x86_64 sub directories implementing the code.
The code in com32/lib/libgcc/__muldi3.S essentially has fixes for building x86_64.
The file x86_init_fpu.c is split into the respective architecture specific files and
reside under com32/lib/sys/i386 and com32/lib/sys/x86_64.
The file com32/lib/sys/farcall.c has fixes for architecture-specific code. The com32 lib
dependends on it.
Remanants of the unused old i386-only files, if any, need to be pruned.
Diffstat (limited to 'com32/lib/libgcc')
| -rw-r--r-- | com32/lib/libgcc/__muldi3.S | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/com32/lib/libgcc/__muldi3.S b/com32/lib/libgcc/__muldi3.S index 648a88ad..424787c8 100644 --- a/com32/lib/libgcc/__muldi3.S +++ b/com32/lib/libgcc/__muldi3.S @@ -9,6 +9,8 @@ .globl __muldi3 .type __muldi3,@function __muldi3: +#if __SIZEOF_POINTER__ == 4 + /* i386 */ push %esi #ifndef REGPARM movl 8(%esp),%eax @@ -31,4 +33,51 @@ __muldi3: #endif pop %esi ret +#elif __SIZEOF_POINTER__ == 8 + /* x86_64 */ + push %rsi +#ifndef REGPARM +/* + movl 8(%esp),%eax + movl %eax,%esi + movl 16(%esp),%ecx + mull %ecx + imull 12(%esp),%ecx + imull 20(%esp),%esi + addl %ecx,%edx + addl %esi,%edx +*/ + movq 8(%rsp),%rax + movq %rax,%rsi + movq 16(%rsp),%rcx + mulq %rcx + imulq 12(%rsp),%rcx + imulq 20(%rsp),%rsi + addq %rcx,%rdx + addq %rsi,%rdx +#else +/* + movl %eax,%esi + push %edx + mull %ecx + imull 8(%esp),%esi + addl %esi,%edx + pop %rsi + imull %esi,%ecx + addl %ecx,%edx +*/ + movq %rax,%rsi + pushq %rdx + mulq %rcx + imulq 8(%rsp),%rsi + addq %rsi,%rdx + popq %rsi + imulq %rsi,%rcx + addq %rcx,%rdx +#endif + pop %rsi + ret +#else +#error "Unsupported architecture for __muldi3.S" +#endif .size __muldi3,.-__muldi3 |