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Diffstat (limited to 'linux-user/cris/signal.c')
-rw-r--r--linux-user/cris/signal.c194
1 files changed, 0 insertions, 194 deletions
diff --git a/linux-user/cris/signal.c b/linux-user/cris/signal.c
deleted file mode 100644
index 10948bc..0000000
--- a/linux-user/cris/signal.c
+++ /dev/null
@@ -1,194 +0,0 @@
-/*
- * Emulation of Linux signals
- *
- * Copyright (c) 2003 Fabrice Bellard
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-#include "qemu/osdep.h"
-#include "qemu.h"
-#include "user-internals.h"
-#include "signal-common.h"
-#include "linux-user/trace.h"
-
-struct target_sigcontext {
- struct target_pt_regs regs; /* needs to be first */
- uint32_t oldmask;
- uint32_t usp; /* usp before stacking this gunk on it */
-};
-
-/* Signal frames. */
-struct target_signal_frame {
- struct target_sigcontext sc;
- uint32_t extramask[TARGET_NSIG_WORDS - 1];
- uint16_t retcode[4]; /* Trampoline code. */
-};
-
-static void setup_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
-{
- __put_user(env->regs[0], &sc->regs.r0);
- __put_user(env->regs[1], &sc->regs.r1);
- __put_user(env->regs[2], &sc->regs.r2);
- __put_user(env->regs[3], &sc->regs.r3);
- __put_user(env->regs[4], &sc->regs.r4);
- __put_user(env->regs[5], &sc->regs.r5);
- __put_user(env->regs[6], &sc->regs.r6);
- __put_user(env->regs[7], &sc->regs.r7);
- __put_user(env->regs[8], &sc->regs.r8);
- __put_user(env->regs[9], &sc->regs.r9);
- __put_user(env->regs[10], &sc->regs.r10);
- __put_user(env->regs[11], &sc->regs.r11);
- __put_user(env->regs[12], &sc->regs.r12);
- __put_user(env->regs[13], &sc->regs.r13);
- __put_user(env->regs[14], &sc->usp);
- __put_user(env->regs[15], &sc->regs.acr);
- __put_user(env->pregs[PR_MOF], &sc->regs.mof);
- __put_user(env->pregs[PR_SRP], &sc->regs.srp);
- __put_user(env->pc, &sc->regs.erp);
-}
-
-static void restore_sigcontext(struct target_sigcontext *sc, CPUCRISState *env)
-{
- __get_user(env->regs[0], &sc->regs.r0);
- __get_user(env->regs[1], &sc->regs.r1);
- __get_user(env->regs[2], &sc->regs.r2);
- __get_user(env->regs[3], &sc->regs.r3);
- __get_user(env->regs[4], &sc->regs.r4);
- __get_user(env->regs[5], &sc->regs.r5);
- __get_user(env->regs[6], &sc->regs.r6);
- __get_user(env->regs[7], &sc->regs.r7);
- __get_user(env->regs[8], &sc->regs.r8);
- __get_user(env->regs[9], &sc->regs.r9);
- __get_user(env->regs[10], &sc->regs.r10);
- __get_user(env->regs[11], &sc->regs.r11);
- __get_user(env->regs[12], &sc->regs.r12);
- __get_user(env->regs[13], &sc->regs.r13);
- __get_user(env->regs[14], &sc->usp);
- __get_user(env->regs[15], &sc->regs.acr);
- __get_user(env->pregs[PR_MOF], &sc->regs.mof);
- __get_user(env->pregs[PR_SRP], &sc->regs.srp);
- __get_user(env->pc, &sc->regs.erp);
-}
-
-static abi_ulong get_sigframe(CPUCRISState *env, int framesize)
-{
- abi_ulong sp;
- /* Align the stack downwards to 4. */
- sp = (env->regs[R_SP] & ~3);
- return sp - framesize;
-}
-
-static void setup_sigreturn(uint16_t *retcode)
-{
- /* This is movu.w __NR_sigreturn, r9; break 13; */
- __put_user(0x9c5f, retcode + 0);
- __put_user(TARGET_NR_sigreturn, retcode + 1);
- __put_user(0xe93d, retcode + 2);
-}
-
-void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUCRISState *env)
-{
- struct target_signal_frame *frame;
- abi_ulong frame_addr;
- int i;
-
- frame_addr = get_sigframe(env, sizeof *frame);
- trace_user_setup_frame(env, frame_addr);
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
- goto badframe;
-
- /*
- * The CRIS signal return trampoline. A real linux/CRIS kernel doesn't
- * use this trampoline anymore but it sets it up for GDB.
- */
- setup_sigreturn(frame->retcode);
-
- /* Save the mask. */
- __put_user(set->sig[0], &frame->sc.oldmask);
-
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __put_user(set->sig[i], &frame->extramask[i - 1]);
- }
-
- setup_sigcontext(&frame->sc, env);
-
- /* Move the stack and setup the arguments for the handler. */
- env->regs[R_SP] = frame_addr;
- env->regs[10] = sig;
- env->pc = (unsigned long) ka->_sa_handler;
- /* Link SRP so the guest returns through the trampoline. */
- env->pregs[PR_SRP] = default_sigreturn;
-
- unlock_user_struct(frame, frame_addr, 1);
- return;
-badframe:
- force_sigsegv(sig);
-}
-
-void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUCRISState *env)
-{
- qemu_log_mask(LOG_UNIMP, "setup_rt_frame: not implemented\n");
-}
-
-long do_sigreturn(CPUCRISState *env)
-{
- struct target_signal_frame *frame;
- abi_ulong frame_addr;
- target_sigset_t target_set;
- sigset_t set;
- int i;
-
- frame_addr = env->regs[R_SP];
- trace_user_do_sigreturn(env, frame_addr);
- /* Make sure the guest isn't playing games. */
- if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 1)) {
- goto badframe;
- }
-
- /* Restore blocked signals */
- __get_user(target_set.sig[0], &frame->sc.oldmask);
- for(i = 1; i < TARGET_NSIG_WORDS; i++) {
- __get_user(target_set.sig[i], &frame->extramask[i - 1]);
- }
- target_to_host_sigset_internal(&set, &target_set);
- set_sigmask(&set);
-
- restore_sigcontext(&frame->sc, env);
- unlock_user_struct(frame, frame_addr, 0);
- return -QEMU_ESIGRETURN;
-badframe:
- force_sig(TARGET_SIGSEGV);
- return -QEMU_ESIGRETURN;
-}
-
-long do_rt_sigreturn(CPUCRISState *env)
-{
- trace_user_do_rt_sigreturn(env, 0);
- qemu_log_mask(LOG_UNIMP, "do_rt_sigreturn: not implemented\n");
- return -TARGET_ENOSYS;
-}
-
-void setup_sigtramp(abi_ulong sigtramp_page)
-{
- uint16_t *tramp = lock_user(VERIFY_WRITE, sigtramp_page, 6, 0);
- assert(tramp != NULL);
-
- default_sigreturn = sigtramp_page;
- setup_sigreturn(tramp);
-
- unlock_user(tramp, sigtramp_page, 6);
-}
generated by cgit v1.1 at 2025-07-02 03:24:43 +0000