diff options
Diffstat (limited to 'arch/um/os-Linux/skas')
| -rw-r--r-- | arch/um/os-Linux/skas/mem.c | 8 | ||||
| -rw-r--r-- | arch/um/os-Linux/skas/process.c | 21 |
2 files changed, 15 insertions, 14 deletions
diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c index d58d11179bb..484e68f9f7a 100644 --- a/arch/um/os-Linux/skas/mem.c +++ b/arch/um/os-Linux/skas/mem.c @@ -10,6 +10,7 @@ #include <sys/mman.h> #include "init.h" #include "kern_constants.h" +#include "as-layout.h" #include "mm_id.h" #include "os.h" #include "proc_mm.h" @@ -40,7 +41,7 @@ static unsigned long syscall_regs[MAX_REG_NR]; static int __init init_syscall_regs(void) { get_safe_registers(syscall_regs); - syscall_regs[REGS_IP_INDEX] = UML_CONFIG_STUB_CODE + + syscall_regs[REGS_IP_INDEX] = STUB_CODE + ((unsigned long) &batch_syscall_stub - (unsigned long) &__syscall_stub_start); return 0; @@ -93,8 +94,7 @@ static inline long do_syscall_stub(struct mm_id * mm_idp, void **addr) ret = *((unsigned long *) mm_idp->stack); offset = *((unsigned long *) mm_idp->stack + 1); if (offset) { - data = (unsigned long *)(mm_idp->stack + - offset - UML_CONFIG_STUB_DATA); + data = (unsigned long *)(mm_idp->stack + offset - STUB_DATA); printk(UM_KERN_ERR "do_syscall_stub : ret = %ld, offset = %ld, " "data = %p\n", ret, offset, data); syscall = (unsigned long *)((unsigned long)data + data[0]); @@ -182,7 +182,7 @@ long syscall_stub_data(struct mm_id * mm_idp, memcpy(stack + 1, data, data_count * sizeof(long)); *stub_addr = (void *)(((unsigned long)(stack + 1) & - ~UM_KERN_PAGE_MASK) + UML_CONFIG_STUB_DATA); + ~UM_KERN_PAGE_MASK) + STUB_DATA); return 0; } diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index 8548f126d62..e60d6e6c5a5 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -191,22 +191,23 @@ static int userspace_tramp(void *stack) int fd; unsigned long long offset; fd = phys_mapping(to_phys(&__syscall_stub_start), &offset); - addr = mmap64((void *) UML_CONFIG_STUB_CODE, UM_KERN_PAGE_SIZE, + addr = mmap64((void *) STUB_CODE, UM_KERN_PAGE_SIZE, PROT_EXEC, MAP_FIXED | MAP_PRIVATE, fd, offset); if (addr == MAP_FAILED) { - printk(UM_KERN_ERR "mapping mmap stub failed, " - "errno = %d\n", errno); + printk(UM_KERN_ERR "mapping mmap stub at 0x%lx failed, " + "errno = %d\n", STUB_CODE, errno); exit(1); } if (stack != NULL) { fd = phys_mapping(to_phys(stack), &offset); - addr = mmap((void *) UML_CONFIG_STUB_DATA, + addr = mmap((void *) STUB_DATA, UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_SHARED, fd, offset); if (addr == MAP_FAILED) { printk(UM_KERN_ERR "mapping segfault stack " - "failed, errno = %d\n", errno); + "at 0x%lx failed, errno = %d\n", + STUB_DATA, errno); exit(1); } } @@ -214,11 +215,11 @@ static int userspace_tramp(void *stack) if (!ptrace_faultinfo && (stack != NULL)) { struct sigaction sa; - unsigned long v = UML_CONFIG_STUB_CODE + + unsigned long v = STUB_CODE + (unsigned long) stub_segv_handler - (unsigned long) &__syscall_stub_start; - set_sigstack((void *) UML_CONFIG_STUB_DATA, UM_KERN_PAGE_SIZE); + set_sigstack((void *) STUB_DATA, UM_KERN_PAGE_SIZE); sigemptyset(&sa.sa_mask); sigaddset(&sa.sa_mask, SIGIO); sigaddset(&sa.sa_mask, SIGWINCH); @@ -382,10 +383,10 @@ static int __init init_thread_regs(void) { get_safe_registers(thread_regs); /* Set parent's instruction pointer to start of clone-stub */ - thread_regs[REGS_IP_INDEX] = UML_CONFIG_STUB_CODE + + thread_regs[REGS_IP_INDEX] = STUB_CODE + (unsigned long) stub_clone_handler - (unsigned long) &__syscall_stub_start; - thread_regs[REGS_SP_INDEX] = UML_CONFIG_STUB_DATA + UM_KERN_PAGE_SIZE - + thread_regs[REGS_SP_INDEX] = STUB_DATA + UM_KERN_PAGE_SIZE - sizeof(void *); #ifdef __SIGNAL_FRAMESIZE thread_regs[REGS_SP_INDEX] -= __SIGNAL_FRAMESIZE; @@ -443,7 +444,7 @@ int copy_context_skas0(unsigned long new_stack, int pid) * child's stack and check it. */ wait_stub_done(pid); - if (child_data->err != UML_CONFIG_STUB_DATA) + if (child_data->err != STUB_DATA) panic("copy_context_skas0 - stub-child reports error %ld\n", child_data->err); |