diff options
author | José Fonseca <jfonseca@vmware.com> | 2010-08-21 10:07:12 +0100 |
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committer | José Fonseca <jfonseca@vmware.com> | 2010-08-21 10:07:12 +0100 |
commit | 7a40d15e6c6b8ebc971be0e926c7027a85db96a0 (patch) | |
tree | 7f2c88907c400fce161a39a82d774e1e7d7e3358 | |
parent | ce3a07c392fb0532f18dcb2d582b41a3f6bf198c (diff) |
util: Remove the x86 exception handlers.
Unused now that check_os_katmai_support was removed.
-rw-r--r-- | src/gallium/auxiliary/util/u_cpu_detect.c | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c index b9b9f9257a..f33d6b3461 100644 --- a/src/gallium/auxiliary/util/u_cpu_detect.c +++ b/src/gallium/auxiliary/util/u_cpu_detect.c @@ -83,61 +83,6 @@ static int has_cpuid(void); #endif -#if defined(PIPE_ARCH_X86) - -/* The sigill handlers */ -#if defined(PIPE_OS_LINUX) /*&& defined(_POSIX_SOURCE) && defined(X86_FXSR_MAGIC)*/ -static void -sigill_handler_sse(int signal, struct sigcontext sc) -{ - /* Both the "xorps %%xmm0,%%xmm0" and "divps %xmm0,%%xmm1" - * instructions are 3 bytes long. We must increment the instruction - * pointer manually to avoid repeated execution of the offending - * instruction. - * - * If the SIGILL is caused by a divide-by-zero when unmasked - * exceptions aren't supported, the SIMD FPU status and control - * word will be restored at the end of the test, so we don't need - * to worry about doing it here. Besides, we may not be able to... - */ - sc.eip += 3; - - util_cpu_caps.has_sse=0; -} - -static void -sigfpe_handler_sse(int signal, struct sigcontext sc) -{ - if (sc.fpstate->magic != 0xffff) { - /* Our signal context has the extended FPU state, so reset the - * divide-by-zero exception mask and clear the divide-by-zero - * exception bit. - */ - sc.fpstate->mxcsr |= 0x00000200; - sc.fpstate->mxcsr &= 0xfffffffb; - } else { - /* If we ever get here, we're completely hosed. - */ - } -} -#endif /* PIPE_OS_LINUX && _POSIX_SOURCE && X86_FXSR_MAGIC */ - -#if defined(PIPE_OS_WINDOWS) -static LONG CALLBACK -win32_sig_handler_sse(EXCEPTION_POINTERS* ep) -{ - if(ep->ExceptionRecord->ExceptionCode==EXCEPTION_ILLEGAL_INSTRUCTION){ - ep->ContextRecord->Eip +=3; - util_cpu_caps.has_sse=0; - return EXCEPTION_CONTINUE_EXECUTION; - } - return EXCEPTION_CONTINUE_SEARCH; -} -#endif /* PIPE_OS_WINDOWS */ - -#endif /* PIPE_ARCH_X86 */ - - #if defined(PIPE_ARCH_PPC) && !defined(PIPE_OS_APPLE) static jmp_buf __lv_powerpc_jmpbuf; static volatile sig_atomic_t __lv_powerpc_canjump = 0; |