diff options
Diffstat (limited to 'linux-user/signal.c')
| -rw-r--r-- | linux-user/signal.c | 36 |
1 files changed, 26 insertions, 10 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c index 087c4d2..cd0e739 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -21,7 +21,7 @@ #include "qemu/cutils.h" #include "gdbstub/user.h" #include "exec/page-protection.h" -#include "hw/core/tcg-cpu-ops.h" +#include "accel/tcg/cpu-ops.h" #include <sys/ucontext.h> #include <sys/resource.h> @@ -36,6 +36,7 @@ #include "user/cpu_loop.h" #include "user/page-protection.h" #include "user/safe-syscall.h" +#include "user/signal.h" #include "tcg/tcg.h" /* target_siginfo_t must fit in gdbstub's siginfo save area. */ @@ -516,6 +517,8 @@ static int core_dump_signal(int sig) } } +int host_interrupt_signal; + static void signal_table_init(const char *rtsig_map) { int hsig, tsig, count; @@ -579,10 +582,10 @@ static void signal_table_init(const char *rtsig_map) * Attempts for configure "missing" signals via sigaction will be * silently ignored. * - * Reserve one signal for internal usage (see below). + * Reserve two signals for internal usage (see below). */ - hsig = SIGRTMIN + 1; + hsig = SIGRTMIN + 2; for (tsig = TARGET_SIGRTMIN; hsig <= SIGRTMAX && tsig <= TARGET_NSIG; hsig++, tsig++) { @@ -603,12 +606,17 @@ static void signal_table_init(const char *rtsig_map) host_to_target_signal_table[SIGABRT] = 0; for (hsig = SIGRTMIN; hsig <= SIGRTMAX; hsig++) { if (!host_to_target_signal_table[hsig]) { - host_to_target_signal_table[hsig] = TARGET_SIGABRT; - break; + if (host_interrupt_signal) { + host_to_target_signal_table[hsig] = TARGET_SIGABRT; + break; + } else { + host_interrupt_signal = hsig; + } } } if (hsig > SIGRTMAX) { - fprintf(stderr, "No rt signals left for SIGABRT mapping\n"); + fprintf(stderr, + "No rt signals left for interrupt and SIGABRT mapping\n"); exit(EXIT_FAILURE); } @@ -688,6 +696,8 @@ void signal_init(const char *rtsig_map) } sigact_table[tsig - 1]._sa_handler = thand; } + + sigaction(host_interrupt_signal, &act, NULL); } /* Force a synchronously taken signal. The kernel force_sig() function @@ -740,10 +750,10 @@ void force_sigsegv(int oldsig) } #endif -void cpu_loop_exit_sigsegv(CPUState *cpu, target_ulong addr, +void cpu_loop_exit_sigsegv(CPUState *cpu, vaddr addr, MMUAccessType access_type, bool maperr, uintptr_t ra) { - const TCGCPUOps *tcg_ops = CPU_GET_CLASS(cpu)->tcg_ops; + const TCGCPUOps *tcg_ops = cpu->cc->tcg_ops; if (tcg_ops->record_sigsegv) { tcg_ops->record_sigsegv(cpu, addr, access_type, maperr, ra); @@ -756,10 +766,10 @@ void cpu_loop_exit_sigsegv(CPUState *cpu, target_ulong addr, cpu_loop_exit_restore(cpu, ra); } -void cpu_loop_exit_sigbus(CPUState *cpu, target_ulong addr, +void cpu_loop_exit_sigbus(CPUState *cpu, vaddr addr, MMUAccessType access_type, uintptr_t ra) { - const TCGCPUOps *tcg_ops = CPU_GET_CLASS(cpu)->tcg_ops; + const TCGCPUOps *tcg_ops = cpu->cc->tcg_ops; if (tcg_ops->record_sigbus) { tcg_ops->record_sigbus(cpu, addr, access_type, ra); @@ -1035,6 +1045,12 @@ static void host_signal_handler(int host_sig, siginfo_t *info, void *puc) bool sync_sig = false; void *sigmask; + if (host_sig == host_interrupt_signal) { + ts->signal_pending = 1; + cpu_exit(thread_cpu); + return; + } + /* * Non-spoofed SIGSEGV and SIGBUS are synchronous, and need special * handling wrt signal blocking and unwinding. Non-spoofed SIGILL, |