diff options
Diffstat (limited to 'arch/h8300/kernel')
| -rw-r--r-- | arch/h8300/kernel/sys_h8300.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/h8300/kernel/sys_h8300.c b/arch/h8300/kernel/sys_h8300.c index 0f61b7ad69ab..302a2dfe634a 100644 --- a/arch/h8300/kernel/sys_h8300.c +++ b/arch/h8300/kernel/sys_h8300.c @@ -25,6 +25,7 @@ #include <asm/cachectl.h> #include <asm/traps.h> #include <asm/ipc.h> +#include <asm/unistd.h> /* * sys_pipe() is the normal C calling standard for creating @@ -280,3 +281,26 @@ asmlinkage void syscall_print(void *dummy,...) ((regs->pc)&0xffffff)-2,regs->orig_er0,regs->er1,regs->er2,regs->er3,regs->er0); } #endif + +/* + * Do a system call from kernel instead of calling sys_execve so we + * end up with proper pt_regs. + */ +int kernel_execve(const char *filename, char *const argv[], char *const envp[]) +{ + register long res __asm__("er0"); + register const char * _a __asm__("er1") = filename; + register void *_b __asm__("er2") = argv; + register void *_c __asm__("er3") = envp; + __asm__ __volatile__ ("mov.l %1,er0\n\t" + "trapa #0\n\t" + : "=r" (res) + : "g" (__NR_execve), + "g" (_a), + "g" (_b), + "g" (_c) + : "cc", "memory"); + return res; +} + + |