diff options
Diffstat (limited to 'sysdeps/unix/bsd/sun/sparc/sigtramp.c')
| -rw-r--r-- | sysdeps/unix/bsd/sun/sparc/sigtramp.c | 247 |
1 files changed, 0 insertions, 247 deletions
diff --git a/sysdeps/unix/bsd/sun/sparc/sigtramp.c b/sysdeps/unix/bsd/sun/sparc/sigtramp.c deleted file mode 100644 index e11f7e51d3..0000000000 --- a/sysdeps/unix/bsd/sun/sparc/sigtramp.c +++ /dev/null @@ -1,247 +0,0 @@ -/* Copyright (C) 1991,1992,1994,1996,1997,2004 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#ifndef __GNUC__ - #error This file uses GNU C extensions; you must compile with GCC. -#endif - -/* Get the definition of `struct sigcontext'. */ -#define KERNEL -#define sigvec sun_sigvec -#define sigstack sun_sigstack -#define sigcontext sun_sigcontext -#include "/usr/include/sys/signal.h" -#undef sigvec -#undef sigstack -#undef sigcontext -#undef NSIG -#undef SIGABRT -#undef SIGCLD -#undef SV_ONSTACK -#undef SV_RESETHAND -#undef SV_INTERRUPT -#undef SA_ONSTACK -#undef SA_NOCLDSTOP -#undef SIG_ERR -#undef SIG_DFL -#undef SIG_IGN -#undef sigmask -#undef SIG_BLOCK -#undef SIG_UNBLOCK -#undef SIG_SETMASK - -#include <signal.h> -#include <stddef.h> -#include <errno.h> - -/* Defined in __sigvec.S. */ -extern int __raw_sigvec (int sig, CONST struct sigvec *vec, - struct sigvec *ovec); - -/* User-specified signal handlers. */ -#define mytramp 1 -#ifdef mytramp -static __sighandler_t handlers[NSIG]; -#else -#define handlers _sigfunc -extern __sighandler_t _sigfunc[]; -#endif - -#if mytramp - -/* Handler for all signals that are handled by a user-specified function. - Saves and restores the general regs %g2-%g7, the %y register, and - all the FPU regs (including %fsr), around calling the user's handler. */ -static void -trampoline (sig) - int sig; -{ - /* We use `double' and `long long int' so `std' (store doubleword) insns, - which might be faster than single-word stores, will be generated. */ - register double f0 asm("%f0"); - register double f2 asm("%f2"); - register double f4 asm("%f4"); - register double f6 asm("%f6"); - register double f8 asm("%f8"); - register double f10 asm("%f10"); - register double f12 asm("%f12"); - register double f14 asm("%f14"); - register double f16 asm("%f16"); - register double f18 asm("%f18"); - register double f20 asm("%f20"); - register double f22 asm("%f22"); - register double f24 asm("%f24"); - register double f26 asm("%f26"); - register double f28 asm("%f28"); - register double f30 asm("%f30"); - register long long int g2 asm("%g2"); - register long long int g4 asm("%g4"); - register long long int g6 asm("%g6"); - register int *fp asm("%fp"); - - int code; - register struct sigcontext *context asm("%i0"); /* See end of fn. */ - void *addr; - int y; - double fpsave[16]; - int fsr; - int savefpu; - long long int glsave[3]; - - /* SIG isn't really passed as an arg. - The args to the signal handler are at fp[16..19]. */ - sig = fp[16]; - code = fp[17]; - context = (struct sigcontext *) fp[18]; - addr = (PTR) fp[19]; - - /* Save the Y register. */ - asm("rd %%y, %0" : "=r" (y)); - - /* Save the FPU regs if the FPU enable bit is set in the PSR, - and the signal isn't an FP exception. */ - savefpu = (context->sc_psr & 0x1000) && sig != SIGFPE; - if (savefpu) - { - fpsave[0] = f0; - fpsave[1] = f2; - fpsave[2] = f4; - fpsave[3] = f6; - fpsave[4] = f8; - fpsave[5] = f10; - fpsave[6] = f12; - fpsave[7] = f14; - fpsave[8] = f16; - fpsave[9] = f18; - fpsave[10] = f20; - fpsave[11] = f22; - fpsave[12] = f24; - fpsave[13] = f26; - fpsave[14] = f28; - fpsave[15] = f30; - - /* Force it into a stack slot so the asm won't barf. Sigh. */ - (void) &fsr; - asm("st %%fsr, %0" : "=m" (fsr)); - } - - /* Save the global registers (except for %g1, which is a scratch reg). */ - glsave[0] = g2; - glsave[1] = g4; - glsave[2] = g6; - - /* Call the user's handler. */ - (*((void (*) (int sig, int code, struct sigcontext *context, - void *addr)) handlers[sig])) - (sig, code, context, addr); - - /* Restore the Y register. */ - asm("mov %0, %%y" : : "r" (y)); - - if (savefpu) - { - /* Restore the FPU regs. */ - f0 = fpsave[0]; - f2 = fpsave[1]; - f4 = fpsave[2]; - f6 = fpsave[3]; - f8 = fpsave[4]; - f10 = fpsave[5]; - f12 = fpsave[6]; - f14 = fpsave[7]; - f16 = fpsave[8]; - f18 = fpsave[9]; - f20 = fpsave[10]; - f22 = fpsave[11]; - f24 = fpsave[12]; - f26 = fpsave[13]; - f28 = fpsave[14]; - f30 = fpsave[15]; - - asm("ld %0, %%fsr" : : "m" (fsr)); - } - - /* Restore the globals. */ - g2 = glsave[0]; - g4 = glsave[1]; - g6 = glsave[2]; - - /* Unwind a frame, and do a "sigcleanup" system call. - The system call apparently does a return. - I don't know what it's for. Ask Sun. */ - asm("restore %%g0, 139, %%g1\n" - "ta 0\n" - "! this should be i0: %0" /* Useless insn that will never be executed, */ - /* here to make the compiler happy. */ - : /* No outputs. */ : - /* CONTEXT is bound to %i0. We reference it as an input here to make - sure the compiler considers it live at this point, and preserves - the value in that register. The restore makes %i0 become %o0, the - argument to the system call. */ - "r" (context)); -} -#endif - -int -__sigvec (sig, vec, ovec) - int sig; - const struct sigvec *vec; - struct sigvec *ovec; -{ -#ifndef mytramp - extern void _sigtramp (int); -#define trampoline _sigtramp -#endif - struct sigvec myvec; - int mask; - __sighandler_t ohandler; - - if (sig <= 0 || sig >= NSIG) - { - __set_errno (EINVAL); - return -1; - } - - mask = __sigblock (sigmask(sig)); - - ohandler = handlers[sig]; - - if (vec != NULL && - vec->sv_handler != SIG_IGN && vec->sv_handler != SIG_DFL) - { - handlers[sig] = vec->sv_handler; - myvec = *vec; - myvec.sv_handler = trampoline; - vec = &myvec; - } - - if (__raw_sigvec(sig, vec, ovec) < 0) - { - int save = errno; - (void) __sigsetmask(mask); - errno = save; - return -1; - } - - if (ovec != NULL && ovec->sv_handler == trampoline) - ovec->sv_handler = ohandler; - - (void) __sigsetmask (mask); - - return 0; -} |