diff options
| author | Tom Rini <trini@konsulko.com> | 2020-12-14 18:57:57 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-12-14 18:57:57 -0500 |
| commit | 8351a29d2df18c92d8e365cfa848218c3859f3d2 (patch) | |
| tree | 5d29001be9accfb8029df9d9ed78fba196ee07b9 /arch/sandbox/cpu | |
| parent | ddaa94978583d07ec515e7226e397221d8cc44c8 (diff) | |
| parent | b7bbd553de0d9752f919dfc616f560f6f2504c14 (diff) | |
Merge tag 'dm-pull-14dec20' of git://git.denx.de/u-boot-dm into next
Driver model tidy-up for livetree
Driver model big rename for consistency
Python 3 clean-ups for patman
Update sandbox serial driver to use membuff
Diffstat (limited to 'arch/sandbox/cpu')
| -rw-r--r-- | arch/sandbox/cpu/os.c | 40 | ||||
| -rw-r--r-- | arch/sandbox/cpu/start.c | 4 |
2 files changed, 44 insertions, 0 deletions
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c index 0d8efd83f6..b56fa04a34 100644 --- a/arch/sandbox/cpu/os.c +++ b/arch/sandbox/cpu/os.c @@ -3,6 +3,8 @@ * Copyright (c) 2011 The Chromium OS Authors. */ +#define _GNU_SOURCE + #include <dirent.h> #include <errno.h> #include <fcntl.h> @@ -15,11 +17,13 @@ #include <string.h> #include <termios.h> #include <time.h> +#include <ucontext.h> #include <unistd.h> #include <sys/mman.h> #include <sys/stat.h> #include <sys/time.h> #include <sys/types.h> +#include <linux/compiler_attributes.h> #include <linux/types.h> #include <asm/getopt.h> @@ -191,6 +195,42 @@ static void os_sigint_handler(int sig) raise(SIGINT); } +static void os_signal_handler(int sig, siginfo_t *info, void *con) +{ + ucontext_t __maybe_unused *context = con; + unsigned long pc; + +#if defined(__x86_64__) + pc = context->uc_mcontext.gregs[REG_RIP]; +#elif defined(__aarch64__) + pc = context->uc_mcontext.pc; +#elif defined(__riscv) + pc = context->uc_mcontext.__gregs[REG_PC]; +#else + const char msg[] = + "\nUnsupported architecture, cannot read program counter\n"; + + os_write(1, msg, sizeof(msg)); + pc = 0; +#endif + + os_signal_action(sig, pc); +} + +int os_setup_signal_handlers(void) +{ + struct sigaction act; + + act.sa_sigaction = os_signal_handler; + sigemptyset(&act.sa_mask); + act.sa_flags = SA_SIGINFO | SA_NODEFER; + if (sigaction(SIGILL, &act, NULL) || + sigaction(SIGBUS, &act, NULL) || + sigaction(SIGSEGV, &act, NULL)) + return -1; + return 0; +} + /* Put tty into raw mode so <tab> and <ctrl+c> work */ void os_tty_raw(int fd, bool allow_sigs) { diff --git a/arch/sandbox/cpu/start.c b/arch/sandbox/cpu/start.c index a03e5aa0b3..f6c98545e0 100644 --- a/arch/sandbox/cpu/start.c +++ b/arch/sandbox/cpu/start.c @@ -451,6 +451,10 @@ int main(int argc, char *argv[]) if (ret) goto err; + ret = os_setup_signal_handlers(); + if (ret) + goto err; + #if CONFIG_VAL(SYS_MALLOC_F_LEN) gd->malloc_base = CONFIG_MALLOC_F_ADDR; #endif |