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-rw-r--r--linux-user/signal.c245
1 files changed, 71 insertions, 174 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c
index 67c23118a0..1055507224 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -2438,66 +2438,9 @@ void sparc64_get_context(CPUSPARCState *env)
force_sig(TARGET_SIGSEGV);
}
#endif
-#elif defined(TARGET_ABI_MIPSN64)
-
-# warning signal handling not implemented
-
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUMIPSState *env)
-{
- fprintf(stderr, "setup_frame: not implemented\n");
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUMIPSState *env)
-{
- fprintf(stderr, "setup_rt_frame: not implemented\n");
-}
-
-long do_sigreturn(CPUMIPSState *env)
-{
- fprintf(stderr, "do_sigreturn: not implemented\n");
- return -TARGET_ENOSYS;
-}
-
-long do_rt_sigreturn(CPUMIPSState *env)
-{
- fprintf(stderr, "do_rt_sigreturn: not implemented\n");
- return -TARGET_ENOSYS;
-}
-
-#elif defined(TARGET_ABI_MIPSN32)
-
-# warning signal handling not implemented
-
-static void setup_frame(int sig, struct target_sigaction *ka,
- target_sigset_t *set, CPUMIPSState *env)
-{
- fprintf(stderr, "setup_frame: not implemented\n");
-}
-
-static void setup_rt_frame(int sig, struct target_sigaction *ka,
- target_siginfo_t *info,
- target_sigset_t *set, CPUMIPSState *env)
-{
- fprintf(stderr, "setup_rt_frame: not implemented\n");
-}
-
-long do_sigreturn(CPUMIPSState *env)
-{
- fprintf(stderr, "do_sigreturn: not implemented\n");
- return -TARGET_ENOSYS;
-}
-
-long do_rt_sigreturn(CPUMIPSState *env)
-{
- fprintf(stderr, "do_rt_sigreturn: not implemented\n");
- return -TARGET_ENOSYS;
-}
-
-#elif defined(TARGET_ABI_MIPSO32)
+#elif defined(TARGET_MIPS) || defined(TARGET_MIPS64)
+# if defined(TARGET_ABI_MIPSO32)
struct target_sigcontext {
uint32_t sc_regmask; /* Unused */
uint32_t sc_status;
@@ -2519,6 +2462,25 @@ struct target_sigcontext {
target_ulong sc_hi3;
target_ulong sc_lo3;
};
+# else /* N32 || N64 */
+struct target_sigcontext {
+ uint64_t sc_regs[32];
+ uint64_t sc_fpregs[32];
+ uint64_t sc_mdhi;
+ uint64_t sc_hi1;
+ uint64_t sc_hi2;
+ uint64_t sc_hi3;
+ uint64_t sc_mdlo;
+ uint64_t sc_lo1;
+ uint64_t sc_lo2;
+ uint64_t sc_lo3;
+ uint64_t sc_pc;
+ uint32_t sc_fpc_csr;
+ uint32_t sc_used_math;
+ uint32_t sc_dsp;
+ uint32_t sc_reserved;
+};
+# endif /* O32 */
struct sigframe {
uint32_t sf_ass[4]; /* argument save space for o32 */
@@ -2546,18 +2508,17 @@ struct target_rt_sigframe {
/* Install trampoline to jump back from signal handler */
static inline int install_sigtramp(unsigned int *tramp, unsigned int syscall)
{
- int err;
+ int err = 0;
/*
- * Set up the return code ...
- *
- * li v0, __NR__foo_sigreturn
- * syscall
- */
+ * Set up the return code ...
+ *
+ * li v0, __NR__foo_sigreturn
+ * syscall
+ */
- err = __put_user(0x24020000 + syscall, tramp + 0);
+ err |= __put_user(0x24020000 + syscall, tramp + 0);
err |= __put_user(0x0000000c , tramp + 1);
- /* flush_cache_sigtramp((unsigned long) tramp); */
return err;
}
@@ -2565,74 +2526,37 @@ static inline int
setup_sigcontext(CPUMIPSState *regs, struct target_sigcontext *sc)
{
int err = 0;
+ int i;
err |= __put_user(regs->active_tc.PC, &sc->sc_pc);
-#define save_gp_reg(i) do { \
- err |= __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \
- } while(0)
- __put_user(0, &sc->sc_regs[0]); save_gp_reg(1); save_gp_reg(2);
- save_gp_reg(3); save_gp_reg(4); save_gp_reg(5); save_gp_reg(6);
- save_gp_reg(7); save_gp_reg(8); save_gp_reg(9); save_gp_reg(10);
- save_gp_reg(11); save_gp_reg(12); save_gp_reg(13); save_gp_reg(14);
- save_gp_reg(15); save_gp_reg(16); save_gp_reg(17); save_gp_reg(18);
- save_gp_reg(19); save_gp_reg(20); save_gp_reg(21); save_gp_reg(22);
- save_gp_reg(23); save_gp_reg(24); save_gp_reg(25); save_gp_reg(26);
- save_gp_reg(27); save_gp_reg(28); save_gp_reg(29); save_gp_reg(30);
- save_gp_reg(31);
-#undef save_gp_reg
+ __put_user(0, &sc->sc_regs[0]);
+ for (i = 1; i < 32; ++i) {
+ err |= __put_user(regs->active_tc.gpr[i], &sc->sc_regs[i]);
+ }
err |= __put_user(regs->active_tc.HI[0], &sc->sc_mdhi);
err |= __put_user(regs->active_tc.LO[0], &sc->sc_mdlo);
- /* Not used yet, but might be useful if we ever have DSP suppport */
-#if 0
- if (cpu_has_dsp) {
- err |= __put_user(mfhi1(), &sc->sc_hi1);
- err |= __put_user(mflo1(), &sc->sc_lo1);
- err |= __put_user(mfhi2(), &sc->sc_hi2);
- err |= __put_user(mflo2(), &sc->sc_lo2);
- err |= __put_user(mfhi3(), &sc->sc_hi3);
- err |= __put_user(mflo3(), &sc->sc_lo3);
- err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp);
- }
- /* same with 64 bit */
-#ifdef CONFIG_64BIT
- err |= __put_user(regs->hi, &sc->sc_hi[0]);
- err |= __put_user(regs->lo, &sc->sc_lo[0]);
- if (cpu_has_dsp) {
- err |= __put_user(mfhi1(), &sc->sc_hi[1]);
- err |= __put_user(mflo1(), &sc->sc_lo[1]);
- err |= __put_user(mfhi2(), &sc->sc_hi[2]);
- err |= __put_user(mflo2(), &sc->sc_lo[2]);
- err |= __put_user(mfhi3(), &sc->sc_hi[3]);
- err |= __put_user(mflo3(), &sc->sc_lo[3]);
- err |= __put_user(rddsp(DSP_MASK), &sc->sc_dsp);
+ /* Rather than checking for dsp existence, always copy. The storage
+ would just be garbage otherwise. */
+ err |= __put_user(regs->active_tc.HI[1], &sc->sc_hi1);
+ err |= __put_user(regs->active_tc.HI[2], &sc->sc_hi2);
+ err |= __put_user(regs->active_tc.HI[3], &sc->sc_hi3);
+ err |= __put_user(regs->active_tc.LO[1], &sc->sc_lo1);
+ err |= __put_user(regs->active_tc.LO[2], &sc->sc_lo2);
+ err |= __put_user(regs->active_tc.LO[3], &sc->sc_lo3);
+ {
+ uint32_t dsp = cpu_rddsp(0x3ff, regs);
+ err |= __put_user(dsp, &sc->sc_dsp);
}
-#endif
-#endif
-
-#if 0
- err |= __put_user(!!used_math(), &sc->sc_used_math);
-
- if (!used_math())
- goto out;
- /*
- * Save FPU state to signal context. Signal handler will "inherit"
- * current FPU state.
- */
- preempt_disable();
+ err |= __put_user(1, &sc->sc_used_math);
- if (!is_fpu_owner()) {
- own_fpu();
- restore_fp(current);
+ for (i = 0; i < 32; ++i) {
+ err |= __put_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]);
}
- err |= save_fp_context(sc);
- preempt_enable();
- out:
-#endif
return err;
}
@@ -2640,70 +2564,36 @@ static inline int
restore_sigcontext(CPUMIPSState *regs, struct target_sigcontext *sc)
{
int err = 0;
+ int i;
err |= __get_user(regs->CP0_EPC, &sc->sc_pc);
err |= __get_user(regs->active_tc.HI[0], &sc->sc_mdhi);
err |= __get_user(regs->active_tc.LO[0], &sc->sc_mdlo);
-#define restore_gp_reg(i) do { \
- err |= __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]); \
- } while(0)
- restore_gp_reg( 1); restore_gp_reg( 2); restore_gp_reg( 3);
- restore_gp_reg( 4); restore_gp_reg( 5); restore_gp_reg( 6);
- restore_gp_reg( 7); restore_gp_reg( 8); restore_gp_reg( 9);
- restore_gp_reg(10); restore_gp_reg(11); restore_gp_reg(12);
- restore_gp_reg(13); restore_gp_reg(14); restore_gp_reg(15);
- restore_gp_reg(16); restore_gp_reg(17); restore_gp_reg(18);
- restore_gp_reg(19); restore_gp_reg(20); restore_gp_reg(21);
- restore_gp_reg(22); restore_gp_reg(23); restore_gp_reg(24);
- restore_gp_reg(25); restore_gp_reg(26); restore_gp_reg(27);
- restore_gp_reg(28); restore_gp_reg(29); restore_gp_reg(30);
- restore_gp_reg(31);
-#undef restore_gp_reg
-
-#if 0
- if (cpu_has_dsp) {
- err |= __get_user(treg, &sc->sc_hi1); mthi1(treg);
- err |= __get_user(treg, &sc->sc_lo1); mtlo1(treg);
- err |= __get_user(treg, &sc->sc_hi2); mthi2(treg);
- err |= __get_user(treg, &sc->sc_lo2); mtlo2(treg);
- err |= __get_user(treg, &sc->sc_hi3); mthi3(treg);
- err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg);
- err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);
- }
-#ifdef CONFIG_64BIT
- err |= __get_user(regs->hi, &sc->sc_hi[0]);
- err |= __get_user(regs->lo, &sc->sc_lo[0]);
- if (cpu_has_dsp) {
- err |= __get_user(treg, &sc->sc_hi[1]); mthi1(treg);
- err |= __get_user(treg, &sc->sc_lo[1]); mthi1(treg);
- err |= __get_user(treg, &sc->sc_hi[2]); mthi2(treg);
- err |= __get_user(treg, &sc->sc_lo[2]); mthi2(treg);
- err |= __get_user(treg, &sc->sc_hi[3]); mthi3(treg);
- err |= __get_user(treg, &sc->sc_lo[3]); mthi3(treg);
- err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK);
+ for (i = 1; i < 32; ++i) {
+ err |= __get_user(regs->active_tc.gpr[i], &sc->sc_regs[i]);
}
-#endif
-
- err |= __get_user(used_math, &sc->sc_used_math);
- conditional_used_math(used_math);
- preempt_disable();
+ err |= __get_user(regs->active_tc.HI[1], &sc->sc_hi1);
+ err |= __get_user(regs->active_tc.HI[2], &sc->sc_hi2);
+ err |= __get_user(regs->active_tc.HI[3], &sc->sc_hi3);
+ err |= __get_user(regs->active_tc.LO[1], &sc->sc_lo1);
+ err |= __get_user(regs->active_tc.LO[2], &sc->sc_lo2);
+ err |= __get_user(regs->active_tc.LO[3], &sc->sc_lo3);
+ {
+ uint32_t dsp;
+ err |= __get_user(dsp, &sc->sc_dsp);
+ cpu_wrdsp(dsp, 0x3ff, regs);
+ }
- if (used_math()) {
- /* restore fpu context if we have used it before */
- own_fpu();
- err |= restore_fp_context(sc);
- } else {
- /* signal handler may have used FPU. Give it up. */
- lose_fpu();
+ for (i = 0; i < 32; ++i) {
+ err |= __get_user(regs->active_fpu.fpr[i].d, &sc->sc_fpregs[i]);
}
- preempt_enable();
-#endif
return err;
}
+
/*
* Determine which stack to use..
*/
@@ -2730,6 +2620,7 @@ get_sigframe(struct target_sigaction *ka, CPUMIPSState *regs, size_t frame_size)
return (sp - frame_size) & ~7;
}
+# if defined(TARGET_ABI_MIPSO32)
/* compare linux/arch/mips/kernel/signal.c:setup_frame() */
static void setup_frame(int sig, struct target_sigaction * ka,
target_sigset_t *set, CPUMIPSState *regs)
@@ -2827,6 +2718,7 @@ badframe:
force_sig(TARGET_SIGSEGV/*, current*/);
return 0;
}
+# endif /* O32 */
static void setup_rt_frame(int sig, struct target_sigaction *ka,
target_siginfo_t *info,
@@ -5557,10 +5449,15 @@ void process_pending_signals(CPUArchState *cpu_env)
}
#endif
/* prepare the stack frame of the virtual CPU */
+#if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64)
+ /* These targets do not have traditional signals. */
+ setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env);
+#else
if (sa->sa_flags & TARGET_SA_SIGINFO)
setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env);
else
setup_frame(sig, sa, &target_old_set, cpu_env);
+#endif
if (sa->sa_flags & TARGET_SA_RESETHAND)
sa->_sa_handler = TARGET_SIG_DFL;
}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2025-04-25 07:07:21 +0200