| /* |
| * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) |
| * Licensed under the GPL |
| */ |
| |
| #ifndef __SYS_SIGCONTEXT_I386_H |
| #define __SYS_SIGCONTEXT_I386_H |
| |
| #include "uml-config.h" |
| #include <sysdep/sc.h> |
| |
| #define IP_RESTART_SYSCALL(ip) ((ip) -= 2) |
| |
| #define SC_RESTART_SYSCALL(sc) IP_RESTART_SYSCALL(SC_IP(sc)) |
| #define SC_SET_SYSCALL_RETURN(sc, result) SC_EAX(sc) = (result) |
| |
| #define GET_FAULTINFO_FROM_SC(fi,sc) \ |
| { \ |
| (fi).cr2 = SC_CR2(sc); \ |
| (fi).error_code = SC_ERR(sc); \ |
| (fi).trap_no = SC_TRAPNO(sc); \ |
| } |
| |
| /* ptrace expects that, at the start of a system call, %eax contains |
| * -ENOSYS, so this makes it so. |
| */ |
| #define SC_START_SYSCALL(sc) do SC_EAX(sc) = -ENOSYS; while(0) |
| |
| /* This is Page Fault */ |
| #define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14) |
| |
| /* SKAS3 has no trap_no on i386, but get_skas_faultinfo() sets it to 0. */ |
| #ifdef UML_CONFIG_MODE_SKAS |
| #define SEGV_MAYBE_FIXABLE(fi) ((fi)->trap_no == 0 && ptrace_faultinfo) |
| #else |
| #define SEGV_MAYBE_FIXABLE(fi) 0 |
| #endif |
| |
| extern unsigned long *sc_sigmask(void *sc_ptr); |
| extern int sc_get_fpregs(unsigned long buf, void *sc_ptr); |
| |
| #endif |
| /* |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * Emacs will notice this stuff at the end of the file and automatically |
| * adjust the settings for this buffer only. This must remain at the end |
| * of the file. |
| * --------------------------------------------------------------------------- |
| * Local variables: |
| * c-file-style: "linux" |
| * End: |
| */ |
