signal_32.c (5c34202b8bf942da411b6599668a76b07449bbfd) signal_32.c (22e38f29328296d9d4cc33e46fd32a63e807abaf)
1/*
2 * Signal handling for 32bit PPC and 32bit tasks on 64bit PPC
3 *
4 * PowerPC version
5 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
6 * Copyright (C) 2001 IBM
7 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
8 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)

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46#ifdef CONFIG_PPC64
47#include "ppc32.h"
48#include <asm/unistd.h>
49#else
50#include <asm/ucontext.h>
51#include <asm/pgtable.h>
52#endif
53
1/*
2 * Signal handling for 32bit PPC and 32bit tasks on 64bit PPC
3 *
4 * PowerPC version
5 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
6 * Copyright (C) 2001 IBM
7 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
8 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)

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46#ifdef CONFIG_PPC64
47#include "ppc32.h"
48#include <asm/unistd.h>
49#else
50#include <asm/ucontext.h>
51#include <asm/pgtable.h>
52#endif
53
54#include "signal.h"
55
54#undef DEBUG_SIG
55
56#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
57
58#ifdef CONFIG_PPC64
59#define do_signal do_signal32
60#define sys_sigsuspend compat_sys_sigsuspend
61#define sys_rt_sigsuspend compat_sys_rt_sigsuspend

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1151 oldset = &current->saved_sigmask;
1152 else if (!oldset)
1153 oldset = &current->blocked;
1154
1155 signr = get_signal_to_deliver(&info, &ka, regs, NULL);
1156#ifdef CONFIG_PPC32
1157no_signal:
1158#endif
56#undef DEBUG_SIG
57
58#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
59
60#ifdef CONFIG_PPC64
61#define do_signal do_signal32
62#define sys_sigsuspend compat_sys_sigsuspend
63#define sys_rt_sigsuspend compat_sys_rt_sigsuspend

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1153 oldset = &current->saved_sigmask;
1154 else if (!oldset)
1155 oldset = &current->blocked;
1156
1157 signr = get_signal_to_deliver(&info, &ka, regs, NULL);
1158#ifdef CONFIG_PPC32
1159no_signal:
1160#endif
1159 if (TRAP(regs) == 0x0C00 /* System Call! */
1160 && regs->ccr & 0x10000000 /* error signalled */
1161 && ((ret = regs->gpr[3]) == ERESTARTSYS
1162 || ret == ERESTARTNOHAND || ret == ERESTARTNOINTR
1163 || ret == ERESTART_RESTARTBLOCK)) {
1161 /* Is there any syscall restart business here ? */
1162 check_syscall_restart(regs, &ka, signr > 0);
1164
1163
1165 if (signr > 0
1166 && (ret == ERESTARTNOHAND || ret == ERESTART_RESTARTBLOCK
1167 || (ret == ERESTARTSYS
1168 && !(ka.sa.sa_flags & SA_RESTART)))) {
1169 /* make the system call return an EINTR error */
1170 regs->result = -EINTR;
1171 regs->gpr[3] = EINTR;
1172 /* note that the cr0.SO bit is already set */
1173 } else {
1174 regs->nip -= 4; /* Back up & retry system call */
1175 regs->result = 0;
1176 regs->trap = 0;
1177 if (ret == ERESTART_RESTARTBLOCK)
1178 regs->gpr[0] = __NR_restart_syscall;
1179 else
1180 regs->gpr[3] = regs->orig_gpr3;
1181 }
1182 }
1183
1184 if (signr == 0) {
1185 /* No signal to deliver -- put the saved sigmask back */
1186 if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
1187 clear_thread_flag(TIF_RESTORE_SIGMASK);
1188 sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
1189 }
1190 return 0; /* no signals delivered */
1191 }

--- 40 unchanged lines hidden --- 		1164 if (signr == 0) {
1165 /* No signal to deliver -- put the saved sigmask back */
1166 if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
1167 clear_thread_flag(TIF_RESTORE_SIGMASK);
1168 sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
1169 }
1170 return 0; /* no signals delivered */
1171 }

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