diff options
Diffstat (limited to 'runtime/sym.c')
| -rw-r--r-- | runtime/sym.c | 68 |
1 files changed, 45 insertions, 23 deletions
diff --git a/runtime/sym.c b/runtime/sym.c index ecd64fee..69c3fe26 100644 --- a/runtime/sym.c +++ b/runtime/sym.c @@ -13,6 +13,7 @@ #define _STP_SYM_C_ #include "string.c" +#include "task_finder_vma.c" /** @file sym.c * @addtogroup sym Symbolic Functions @@ -20,38 +21,59 @@ * @{ */ +static void _stp_sym_init(void) +{ + static int initialized = 0; + if (! initialized) { + __stp_tf_vma_initialize(); + initialized = 1; + } +} + /* Callback that needs to be registered (in tapsets.cxx for emit_module_init) for every user task path or pid for which we might need symbols or unwind info. */ -static int _stp_tf_vm_cb(struct stap_task_finder_target *tgt, - struct task_struct *tsk, - int map_p, char *vm_path, - unsigned long vm_start, unsigned long vm_end, - unsigned long vm_pgoff) +static int _stp_tf_mmap_cb(struct stap_task_finder_target *tgt, + struct task_struct *tsk, + char *path, + unsigned long addr, + unsigned long length, + unsigned long offset, + unsigned long vm_flags) { - int i; + int i; + struct _stp_module *module = NULL; + #ifdef DEBUG_TASK_FINDER_VMA - _stp_dbug(__FUNCTION__, __LINE__, "vm_cb: tsk %d:%d path %s, start 0x%08lx, end 0x%08lx, offset 0x%lx\n", tsk->pid, map_p, vm_path, vm_start, vm_end, vm_pgoff); + _stp_dbug(__FUNCTION__, __LINE__, + "mmap_cb: tsk %d path %s, addr 0x%08lx, length 0x%08lx, offset 0x%lx, flags 0x%lx\n", + tsk->pid, path, addr, length, offset, flags); #endif - if (map_p) - { - struct _stp_module *module = NULL; - if (vm_path != NULL) - for (i = 0; i < _stp_num_modules; i++) - if (strcmp(vm_path, _stp_modules[i]->path) == 0) - { + if (path != NULL) { + for (i = 0; i < _stp_num_modules; i++) { + if (strcmp(path, _stp_modules[i]->path) == 0) + { #ifdef DEBUG_TASK_FINDER_VMA - _stp_dbug(__FUNCTION__, __LINE__, "vm_cb: matched path %s to module\n", vm_path); + _stp_dbug(__FUNCTION__, __LINE__, + "vm_cb: matched path %s to module\n", + path); #endif - module = _stp_modules[i]; - break; - } - stap_add_vma_map_info(tsk, vm_start, vm_end, vm_pgoff, module); - } - else - stap_remove_vma_map_info(tsk, vm_start, vm_end, vm_pgoff); + module = _stp_modules[i]; + break; + } + } + } + stap_add_vma_map_info(tsk, addr, addr + length, offset, module); + return 0; +} - return 0; +static int _stp_tf_munmap_cb(struct stap_task_finder_target *tgt, + struct task_struct *tsk, + unsigned long addr, + unsigned long length) +{ + stap_remove_vma_map_info(tsk, addr, addr + length, 0); + return 0; } /* XXX: this needs to be address-space-specific. */ |