50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
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/*
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* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#ifndef __SYS_SIGCONTEXT_I386_H
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#define __SYS_SIGCONTEXT_I386_H
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#include <sysdep/sc.h>
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#define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
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#define SC_RESTART_SYSCALL(sc) IP_RESTART_SYSCALL(SC_IP(sc))
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#define SC_SET_SYSCALL_RETURN(sc, result) SC_EAX(sc) = (result)
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#define SC_FAULT_ADDR(sc) SC_CR2(sc)
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#define SC_FAULT_TYPE(sc) SC_ERR(sc)
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#define FAULT_WRITE(err) (err & 2)
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#define TO_SC_ERR(is_write) ((is_write) ? 2 : 0)
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#define SC_FAULT_WRITE(sc) (FAULT_WRITE(SC_ERR(sc)))
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#define SC_TRAP_TYPE(sc) SC_TRAPNO(sc)
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/* ptrace expects that, at the start of a system call, %eax contains
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* -ENOSYS, so this makes it so.
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*/
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#define SC_START_SYSCALL(sc) do SC_EAX(sc) = -ENOSYS; while(0)
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/* This is Page Fault */
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#define SEGV_IS_FIXABLE(trap) (trap == 14)
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#define SC_SEGV_IS_FIXABLE(sc) (SEGV_IS_FIXABLE(SC_TRAPNO(sc)))
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extern unsigned long *sc_sigmask(void *sc_ptr);
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extern int sc_get_fpregs(unsigned long buf, void *sc_ptr);
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#endif
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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*/
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