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-rw-r--r--linux-user/main.c39
-rw-r--r--linux-user/signal.c159
-rw-r--r--linux-user/syscall_defs.h11
-rw-r--r--linux-user/tilegx/syscall.h3
4 files changed, 201 insertions, 11 deletions
diff --git a/linux-user/main.c b/linux-user/main.c
index 6599a41404..1f60ff2a1f 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -3414,28 +3414,47 @@ void cpu_loop(CPUS390XState *env)
#ifdef TARGET_TILEGX
-static void gen_sigsegv_maperr(CPUTLGState *env, target_ulong addr)
+static void gen_sigill_reg(CPUTLGState *env)
{
target_siginfo_t info;
- info.si_signo = TARGET_SIGSEGV;
+ info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- info._sifields._sigfault._addr = addr;
+ info.si_code = TARGET_ILL_PRVREG;
+ info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
}
-static void gen_sigill_reg(CPUTLGState *env)
+static void do_signal(CPUTLGState *env, int signo, int sigcode)
{
target_siginfo_t info;
- info.si_signo = TARGET_SIGILL;
+ info.si_signo = signo;
info.si_errno = 0;
- info.si_code = TARGET_ILL_PRVREG;
info._sifields._sigfault._addr = env->pc;
+
+ if (signo == TARGET_SIGSEGV) {
+ /* The passed in sigcode is a dummy; check for a page mapping
+ and pass either MAPERR or ACCERR. */
+ target_ulong addr = env->excaddr;
+ info._sifields._sigfault._addr = addr;
+ if (page_check_range(addr, 1, PAGE_VALID) < 0) {
+ sigcode = TARGET_SEGV_MAPERR;
+ } else {
+ sigcode = TARGET_SEGV_ACCERR;
+ }
+ }
+ info.si_code = sigcode;
+
queue_signal(env, info.si_signo, &info);
}
+static void gen_sigsegv_maperr(CPUTLGState *env, target_ulong addr)
+{
+ env->excaddr = addr;
+ do_signal(env, TARGET_SIGSEGV, 0);
+}
+
static void set_regval(CPUTLGState *env, uint8_t reg, uint64_t val)
{
if (unlikely(reg >= TILEGX_R_COUNT)) {
@@ -3622,13 +3641,13 @@ void cpu_loop(CPUTLGState *env)
case TILEGX_EXCP_OPCODE_FETCHOR4:
do_fetch(env, trapnr, false);
break;
+ case TILEGX_EXCP_SIGNAL:
+ do_signal(env, env->signo, env->sigcode);
+ break;
case TILEGX_EXCP_REG_IDN_ACCESS:
case TILEGX_EXCP_REG_UDN_ACCESS:
gen_sigill_reg(env);
break;
- case TILEGX_EXCP_SEGV:
- gen_sigsegv_maperr(env, env->excaddr);
- break;
default:
fprintf(stderr, "trapnr is %d[0x%x].\n", trapnr, trapnr);
g_assert_not_reached();
diff --git a/linux-user/signal.c b/linux-user/signal.c
index ac82baa0f0..9d62e027e3 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -5537,6 +5537,163 @@ long do_rt_sigreturn(CPUAlphaState *env)
force_sig(TARGET_SIGSEGV);
}
+#elif defined(TARGET_TILEGX)
+
+struct target_sigcontext {
+ union {
+ /* General-purpose registers. */
+ abi_ulong gregs[56];
+ struct {
+ abi_ulong __gregs[53];
+ abi_ulong tp; /* Aliases gregs[TREG_TP]. */
+ abi_ulong sp; /* Aliases gregs[TREG_SP]. */
+ abi_ulong lr; /* Aliases gregs[TREG_LR]. */
+ };
+ };
+ abi_ulong pc; /* Program counter. */
+ abi_ulong ics; /* In Interrupt Critical Section? */
+ abi_ulong faultnum; /* Fault number. */
+ abi_ulong pad[5];
+};
+
+struct target_ucontext {
+ abi_ulong tuc_flags;
+ abi_ulong tuc_link;
+ target_stack_t tuc_stack;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask; /* mask last for extensibility */
+};
+
+struct target_rt_sigframe {
+ unsigned char save_area[16]; /* caller save area */
+ struct target_siginfo info;
+ struct target_ucontext uc;
+};
+
+static void setup_sigcontext(struct target_sigcontext *sc,
+ CPUArchState *env, int signo)
+{
+ int i;
+
+ for (i = 0; i < TILEGX_R_COUNT; ++i) {
+ __put_user(env->regs[i], &sc->gregs[i]);
+ }
+
+ __put_user(env->pc, &sc->pc);
+ __put_user(0, &sc->ics);
+ __put_user(signo, &sc->faultnum);
+}
+
+static void restore_sigcontext(CPUTLGState *env, struct target_sigcontext *sc)
+{
+ int i;
+
+ for (i = 0; i < TILEGX_R_COUNT; ++i) {
+ __get_user(env->regs[i], &sc->gregs[i]);
+ }
+
+ __get_user(env->pc, &sc->pc);
+}
+
+static abi_ulong get_sigframe(struct target_sigaction *ka, CPUArchState *env,
+ size_t frame_size)
+{
+ unsigned long sp = env->regs[TILEGX_R_SP];
+
+ if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size))) {
+ return -1UL;
+ }
+
+ if ((ka->sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+
+ sp -= frame_size;
+ sp &= -16UL;
+ return sp;
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUArchState *env)
+{
+ abi_ulong frame_addr;
+ struct target_rt_sigframe *frame;
+ unsigned long restorer;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ /* Always write at least the signal number for the stack backtracer. */
+ if (ka->sa_flags & TARGET_SA_SIGINFO) {
+ /* At sigreturn time, restore the callee-save registers too. */
+ tswap_siginfo(&frame->info, info);
+ /* regs->flags |= PT_FLAGS_RESTORE_REGS; FIXME: we can skip it? */
+ } else {
+ __put_user(info->si_signo, &frame->info.si_signo);
+ }
+
+ /* Create the ucontext. */
+ __put_user(0, &frame->uc.tuc_flags);
+ __put_user(0, &frame->uc.tuc_link);
+ __put_user(target_sigaltstack_used.ss_sp, &frame->uc.tuc_stack.ss_sp);
+ __put_user(sas_ss_flags(env->regs[TILEGX_R_SP]),
+ &frame->uc.tuc_stack.ss_flags);
+ __put_user(target_sigaltstack_used.ss_size, &frame->uc.tuc_stack.ss_size);
+ setup_sigcontext(&frame->uc.tuc_mcontext, env, info->si_signo);
+
+ restorer = (unsigned long) do_rt_sigreturn;
+ if (ka->sa_flags & TARGET_SA_RESTORER) {
+ restorer = (unsigned long) ka->sa_restorer;
+ }
+ env->pc = (unsigned long) ka->_sa_handler;
+ env->regs[TILEGX_R_SP] = (unsigned long) frame;
+ env->regs[TILEGX_R_LR] = restorer;
+ env->regs[0] = (unsigned long) sig;
+ env->regs[1] = (unsigned long) &frame->info;
+ env->regs[2] = (unsigned long) &frame->uc;
+ /* regs->flags |= PT_FLAGS_CALLER_SAVES; FIXME: we can skip it? */
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ if (sig == TARGET_SIGSEGV) {
+ ka->_sa_handler = TARGET_SIG_DFL;
+ }
+ force_sig(TARGET_SIGSEGV /* , current */);
+}
+
+long do_rt_sigreturn(CPUTLGState *env)
+{
+ abi_ulong frame_addr = env->regs[TILEGX_R_SP];
+ struct target_rt_sigframe *frame;
+ sigset_t set;
+
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
+ do_sigprocmask(SIG_SETMASK, &set, NULL);
+
+ restore_sigcontext(env, &frame->uc.tuc_mcontext);
+ if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe,
+ uc.tuc_stack),
+ 0, env->regs[TILEGX_R_SP]) == -EFAULT) {
+ goto badframe;
+ }
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return env->regs[TILEGX_R_RE];
+
+
+ badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+}
+
#else
static void setup_frame(int sig, struct target_sigaction *ka,
@@ -5657,7 +5814,7 @@ 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) \
- || defined(TARGET_OPENRISC)
+ || defined(TARGET_OPENRISC) || defined(TARGET_TILEGX)
/* These targets do not have traditional signals. */
setup_rt_frame(sig, sa, &q->info, &target_old_set, cpu_env);
#else
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 7ca33a6f62..f996acf945 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -748,6 +748,10 @@ typedef struct target_siginfo {
#define TARGET_ILL_PRVREG (6) /* privileged register */
#define TARGET_ILL_COPROC (7) /* coprocessor error */
#define TARGET_ILL_BADSTK (8) /* internal stack error */
+#ifdef TARGET_TILEGX
+#define TARGET_ILL_DBLFLT (9) /* double fault */
+#define TARGET_ILL_HARDWALL (10) /* user networks hardwall violation */
+#endif
/*
* SIGFPE si_codes
@@ -767,6 +771,7 @@ typedef struct target_siginfo {
*/
#define TARGET_SEGV_MAPERR (1) /* address not mapped to object */
#define TARGET_SEGV_ACCERR (2) /* invalid permissions for mapped object */
+#define TARGET_SEGV_BNDERR (3) /* failed address bound checks */
/*
* SIGBUS si_codes
@@ -774,12 +779,18 @@ typedef struct target_siginfo {
#define TARGET_BUS_ADRALN (1) /* invalid address alignment */
#define TARGET_BUS_ADRERR (2) /* non-existent physical address */
#define TARGET_BUS_OBJERR (3) /* object specific hardware error */
+/* hardware memory error consumed on a machine check: action required */
+#define TARGET_BUS_MCEERR_AR (4)
+/* hardware memory error detected in process but not consumed: action optional*/
+#define TARGET_BUS_MCEERR_AO (5)
/*
* SIGTRAP si_codes
*/
#define TARGET_TRAP_BRKPT (1) /* process breakpoint */
#define TARGET_TRAP_TRACE (2) /* process trace trap */
+#define TARGET_TRAP_BRANCH (3) /* process taken branch trap */
+#define TARGET_TRAP_HWBKPT (4) /* hardware breakpoint/watchpoint */
#endif /* defined(TARGET_I386) || defined(TARGET_ARM) */
diff --git a/linux-user/tilegx/syscall.h b/linux-user/tilegx/syscall.h
index 653ece13d8..a938d4e90c 100644
--- a/linux-user/tilegx/syscall.h
+++ b/linux-user/tilegx/syscall.h
@@ -37,4 +37,7 @@ struct target_pt_regs {
#define TARGET_MLOCKALL_MCL_CURRENT 1
#define TARGET_MLOCKALL_MCL_FUTURE 2
+/* For faultnum */
+#define TARGET_INT_SWINT_1 14
+
#endif
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2025-04-27 04:56:51 +0200