73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
#include <sys/ucontext.h>
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namespace factor {
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/* Fault handler information. MacOSX version.
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Copyright (C) 1993-1999, 2002-2003 Bruno Haible <clisp.org at bruno>
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Copyright (C) 2003 Paolo Bonzini <gnu.org at bonzini>
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Used under BSD license with permission from Paolo Bonzini and Bruno Haible,
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2005-03-10:
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http://sourceforge.net/mailarchive/message.php?msg_name=200503102200.32002.bruno%40clisp.org
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Modified for Factor by Slava Pestov */
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#define MACH_EXC_STATE_TYPE i386_exception_state_t
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#define MACH_EXC_STATE_FLAVOR i386_EXCEPTION_STATE
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#define MACH_EXC_STATE_COUNT i386_EXCEPTION_STATE_COUNT
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#define MACH_EXC_INTEGER_DIV EXC_I386_DIV
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#define MACH_THREAD_STATE_TYPE i386_thread_state_t
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#define MACH_THREAD_STATE_FLAVOR i386_THREAD_STATE
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#define MACH_THREAD_STATE_COUNT i386_THREAD_STATE_COUNT
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#define MACH_FLOAT_STATE_TYPE i386_float_state_t
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#define MACH_FLOAT_STATE_FLAVOR i386_FLOAT_STATE
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#define MACH_FLOAT_STATE_COUNT i386_FLOAT_STATE_COUNT
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#if __DARWIN_UNIX03
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#define MACH_EXC_STATE_FAULT(exc_state) (exc_state)->__faultvaddr
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#define MACH_STACK_POINTER(thr_state) (thr_state)->__esp
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#define MACH_PROGRAM_COUNTER(thr_state) (thr_state)->__eip
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#define UAP_SS(ucontext) &(((ucontext_t*)(ucontext))->uc_mcontext->__ss)
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#define UAP_FS(ucontext) &(((ucontext_t*)(ucontext))->uc_mcontext->__fs)
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#define MXCSR(float_state) (float_state)->__fpu_mxcsr
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#define X87SW(float_state) (float_state)->__fpu_fsw
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#else
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#define MACH_EXC_STATE_FAULT(exc_state) (exc_state)->faultvaddr
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#define MACH_STACK_POINTER(thr_state) (thr_state)->esp
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#define MACH_PROGRAM_COUNTER(thr_state) (thr_state)->eip
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#define UAP_SS(ucontext) &(((ucontext_t*)(ucontext))->uc_mcontext->ss)
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#define UAP_FS(ucontext) &(((ucontext_t*)(ucontext))->uc_mcontext->fs)
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#define MXCSR(float_state) (float_state)->fpu_mxcsr
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#define X87SW(float_state) (float_state)->fpu_fsw
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#endif
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#define UAP_PROGRAM_COUNTER(ucontext) MACH_PROGRAM_COUNTER(UAP_SS(ucontext))
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inline static unsigned int mach_fpu_status(i386_float_state_t* float_state) {
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unsigned short x87sw;
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memcpy(&x87sw, &X87SW(float_state), sizeof(x87sw));
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return MXCSR(float_state) | x87sw;
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}
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inline static unsigned int uap_fpu_status(void* uap) {
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return mach_fpu_status(UAP_FS(uap));
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}
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inline static void mach_clear_fpu_status(i386_float_state_t* float_state) {
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MXCSR(float_state) &= 0xffffffc0;
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memset(&X87SW(float_state), 0, sizeof(X87SW(float_state)));
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}
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inline static void uap_clear_fpu_status(void* uap) {
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mach_clear_fpu_status(UAP_FS(uap));
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}
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}
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