diff options
Diffstat (limited to 'pk/syscall.c')
| -rw-r--r-- | pk/syscall.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/pk/syscall.c b/pk/syscall.c index 1b097b7..2e14d22 100644 --- a/pk/syscall.c +++ b/pk/syscall.c @@ -413,7 +413,7 @@ static int sys_stub_nosys() return -ENOSYS; } -long do_syscall(long a0, long a1, long a2, long a3, long a4, long a5, long n) +long do_syscall(long a0, long a1, long a2, long a3, long a4, long a5, unsigned long n) { const static void* syscall_table[] = { [SYS_exit] = sys_exit, @@ -421,17 +421,11 @@ long do_syscall(long a0, long a1, long a2, long a3, long a4, long a5, long n) [SYS_read] = sys_read, [SYS_pread] = sys_pread, [SYS_write] = sys_write, - [SYS_open] = sys_open, [SYS_openat] = sys_openat, [SYS_close] = sys_close, [SYS_fstat] = sys_fstat, [SYS_lseek] = sys_lseek, - [SYS_stat] = sys_stat, - [SYS_lstat] = sys_lstat, [SYS_fstatat] = sys_fstatat, - [SYS_link] = sys_link, - [SYS_unlink] = sys_unlink, - [SYS_mkdir] = sys_mkdir, [SYS_linkat] = sys_linkat, [SYS_unlinkat] = sys_unlinkat, [SYS_mkdirat] = sys_mkdirat, @@ -448,11 +442,9 @@ long do_syscall(long a0, long a1, long a2, long a3, long a4, long a5, long n) [SYS_mremap] = sys_mremap, [SYS_mprotect] = sys_mprotect, [SYS_rt_sigaction] = sys_rt_sigaction, - [SYS_time] = sys_time, [SYS_gettimeofday] = sys_gettimeofday, [SYS_times] = sys_times, [SYS_writev] = sys_writev, - [SYS_access] = sys_access, [SYS_faccessat] = sys_faccessat, [SYS_fcntl] = sys_fcntl, [SYS_getdents] = sys_getdents, @@ -462,9 +454,26 @@ long do_syscall(long a0, long a1, long a2, long a3, long a4, long a5, long n) [SYS_ioctl] = sys_stub_nosys, }; - if(n >= ARRAY_SIZE(syscall_table) || !syscall_table[n]) + const static void* old_syscall_table[] = { + [-OLD_SYSCALL_THRESHOLD + SYS_open] = sys_open, + [-OLD_SYSCALL_THRESHOLD + SYS_link] = sys_link, + [-OLD_SYSCALL_THRESHOLD + SYS_unlink] = sys_unlink, + [-OLD_SYSCALL_THRESHOLD + SYS_mkdir] = sys_mkdir, + [-OLD_SYSCALL_THRESHOLD + SYS_access] = sys_access, + [-OLD_SYSCALL_THRESHOLD + SYS_stat] = sys_stat, + [-OLD_SYSCALL_THRESHOLD + SYS_lstat] = sys_lstat, + [-OLD_SYSCALL_THRESHOLD + SYS_time] = sys_time, + }; + + syscall_t f = 0; + + if (n < ARRAY_SIZE(syscall_table)) + f = syscall_table[n]; + else if (n - OLD_SYSCALL_THRESHOLD < ARRAY_SIZE(old_syscall_table)) + f = old_syscall_table[n - OLD_SYSCALL_THRESHOLD]; + + if (!f) panic("bad syscall #%ld!",n); - long r = ((syscall_t)syscall_table[n])(a0, a1, a2, a3, a4, a5, n); - return r; + return f(a0, a1, a2, a3, a4, a5, n); } |