diff options
Diffstat (limited to 'arch/sparc/kernel/signal.c')
| -rw-r--r-- | arch/sparc/kernel/signal.c | 76 |
1 files changed, 74 insertions, 2 deletions
diff --git a/arch/sparc/kernel/signal.c b/arch/sparc/kernel/signal.c index 287ed6cdc..e6023f43b 100644 --- a/arch/sparc/kernel/signal.c +++ b/arch/sparc/kernel/signal.c @@ -1,4 +1,4 @@ -/* $Id: signal.c,v 1.90 1998/10/18 03:31:05 davem Exp $ +/* $Id: signal.c,v 1.91 1999/01/26 11:00:44 jj Exp $ * linux/arch/sparc/kernel/signal.c * * Copyright (C) 1991, 1992 Linus Torvalds @@ -38,6 +38,8 @@ asmlinkage int do_signal(sigset_t *oldset, struct pt_regs * regs, /* This turned off for production... */ /* #define DEBUG_SIGNALS 1 */ +/* #define DEBUG_SIGNALS_TRACE 1 */ +/* #define DEBUG_SIGNALS_MAPS 1 */ /* Signal frames: the original one (compatible with SunOS): * @@ -1004,6 +1006,59 @@ static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs, } } +#ifdef DEBUG_SIGNALS_MAPS + +#define MAPS_LINE_FORMAT "%08lx-%08lx %s %08lx %s %lu " + +static inline void read_maps (void) +{ + struct vm_area_struct * map, * next; + char * buffer; + ssize_t i; + + buffer = (char*)__get_free_page(GFP_KERNEL); + if (!buffer) + return; + + for (map = current->mm->mmap ; map ; map = next ) { + /* produce the next line */ + char *line; + char str[5], *cp = str; + int flags; + kdev_t dev; + unsigned long ino; + + /* + * Get the next vma now (but it won't be used if we sleep). + */ + next = map->vm_next; + flags = map->vm_flags; + + *cp++ = flags & VM_READ ? 'r' : '-'; + *cp++ = flags & VM_WRITE ? 'w' : '-'; + *cp++ = flags & VM_EXEC ? 'x' : '-'; + *cp++ = flags & VM_MAYSHARE ? 's' : 'p'; + *cp++ = 0; + + dev = 0; + ino = 0; + if (map->vm_file != NULL) { + dev = map->vm_file->f_dentry->d_inode->i_dev; + ino = map->vm_file->f_dentry->d_inode->i_ino; + line = d_path(map->vm_file->f_dentry, buffer, PAGE_SIZE); + } + printk(MAPS_LINE_FORMAT, map->vm_start, map->vm_end, str, map->vm_offset, + kdevname(dev), ino); + if (map->vm_file != NULL) + printk("%s\n", line); + else + printk("\n"); + } + free_page((unsigned long)buffer); + return; +} +#endif + /* Note that 'init' is a special process: it doesn't get signals it doesn't * want to handle. Thus you cannot kill init even with a SIGKILL even by * mistake. @@ -1115,8 +1170,25 @@ asmlinkage int do_signal(sigset_t *oldset, struct pt_regs * regs, } #ifdef DEBUG_SIGNALS /* Very useful to debug dynamic linker problems */ - printk ("Sig ILL going...\n"); + printk ("Sig %ld going for %s[%d]...\n", signr, current->comm, current->pid); show_regs (regs); +#ifdef DEBUG_SIGNALS_TRACE + { + struct reg_window *rw = (struct reg_window *)regs->u_regs[UREG_FP]; + unsigned int ins[8]; + + while(rw && + !(((unsigned long) rw) & 0x3)) { + copy_from_user(ins, &rw->ins[0], sizeof(ins)); + printk("Caller[%08x](%08x,%08x,%08x,%08x,%08x,%08x)\n", ins[7], ins[0], ins[1], ins[2], ins[3], ins[4], ins[5]); + rw = (struct reg_window *)(unsigned long)ins[6]; + } + } +#endif +#ifdef DEBUG_SIGNALS_MAPS + printk("Maps:\n"); + read_maps(); +#endif #endif /* fall through */ default: |