#include <string.h> /* bcopy */
-#include <kern/processor.h>
-#include <kern/thread.h>
-#include <vm/vm_map.h>
-#include <vm/vm_kern.h>
-
int kdp_vm_read( caddr_t, caddr_t, unsigned int);
int kdp_vm_write( caddr_t, caddr_t, unsigned int);
int reattach_wait = 0;
int noresume_on_disconnect = 0;
-#define MAXCOMLEN 16
-
-struct thread_snapshot {
- uint32_t snapshot_magic;
- thread_t thread_id;
- int32_t state;
- wait_queue_t wait_queue;
- event64_t wait_event;
- vm_offset_t kernel_stack;
- vm_offset_t reserved_stack;
- thread_continue_t continuation;
- uint32_t nkern_frames;
- char user64_p;
- uint32_t nuser_frames;
- int32_t pid;
- char p_comm[MAXCOMLEN + 1];
-};
-
-typedef struct thread_snapshot *thread_snapshot_t;
-
-extern int
-machine_trace_thread(thread_t thread, uint32_t tracepos, uint32_t tracebound, int nframes, boolean_t user_p);
-extern int
-machine_trace_thread64(thread_t thread, uint32_t tracepos, uint32_t tracebound, int nframes, boolean_t user_p);
-extern int
-proc_pid(void *p);
-extern void
-proc_name(int pid, char *buf, int size);
-extern void
-kdp_snapshot_postflight(void);
-
-static int
-pid_from_task(task_t task);
-
-int
-kdp_stackshot(int pid, uint32_t tracebuf, uint32_t tracebuf_size, unsigned trace_options, uint32_t *pbytesTraced);
-
-extern char version[];
-
boolean_t
kdp_packet(
unsigned char *pkt,
int plen = *len;
kdp_readmem_reply_t *rp = &pkt->readmem_reply;
int cnt;
-#if __i386__
- void *pversion = &version;
-#endif
+
if (plen < sizeof (*rq))
return (FALSE);
unsigned int n = rq->nbytes;
dprintf(("kdp_readmem addr %x size %d\n", rq->address, rq->nbytes));
-#if __i386__
- /* XXX This is a hack to facilitate the "showversion" macro
- * on i386, which is used to obtain the kernel version without
- * symbols - a pointer to the version string should eventually
- * be pinned at a fixed address when an equivalent of the
- * VECTORS segment (loaded at a fixed load address, and contains
- * a table) is implemented on x86, as with PPC.
- */
- if (rq->address == (void *)0x501C)
- rq->address = &pversion;
-#endif
+
cnt = kdp_vm_read((caddr_t)rq->address, (caddr_t)rp->data, rq->nbytes);
rp->error = KDPERR_NO_ERROR;
}
return breakpoint_found;
}
-
-
-#define MAX_FRAMES 1000
-
-static int pid_from_task(task_t task)
-{
- int pid = -1;
-
- if (task->bsd_info)
- pid = proc_pid(task->bsd_info);
-
- return pid;
-}
-
-int
-kdp_stackshot(int pid, uint32_t tracebuf, uint32_t tracebuf_size, unsigned trace_options, uint32_t *pbytesTraced)
-{
- uint32_t tracepos = (uint32_t) tracebuf;
- uint32_t tracebound = tracepos + tracebuf_size;
- uint32_t tracebytes = 0;
- int error = 0;
-
- processor_set_t pset = &default_pset;
- task_t task = TASK_NULL;
- thread_t thread = THREAD_NULL;
- int nframes = trace_options;
- thread_snapshot_t tsnap = NULL;
- unsigned framesize = 2 * sizeof(vm_offset_t);
-
- if ((nframes <= 0) || nframes > MAX_FRAMES)
- nframes = MAX_FRAMES;
-
- queue_iterate(&pset->tasks, task, task_t, pset_tasks) {
- /* Trace everything, unless a process was specified */
- if ((pid == -1) || (pid == pid_from_task(task)))
- queue_iterate(&task->threads, thread, thread_t, task_threads){
- if ((tracepos + 4 * sizeof(struct thread_snapshot)) > tracebound) {
- error = -1;
- goto error_exit;
- }
-/* Populate the thread snapshot header */
- tsnap = (thread_snapshot_t) tracepos;
- tsnap->thread_id = thread;
- tsnap->state = thread->state;
- tsnap->wait_queue = thread->wait_queue;
- tsnap->wait_event = thread->wait_event;
- tsnap->kernel_stack = thread->kernel_stack;
- tsnap->reserved_stack = thread->reserved_stack;
- tsnap->continuation = thread->continuation;
-/* Add the BSD process identifiers */
- if ((tsnap->pid = pid_from_task(task)) != -1)
- proc_name(tsnap->pid, tsnap->p_comm, MAXCOMLEN + 1);
- else
- tsnap->p_comm[0] = '\0';
-
- tsnap->snapshot_magic = 0xfeedface;
- tracepos += sizeof(struct thread_snapshot);
-
-/* Call through to the machine specific trace routines
- * Frames are added past the snapshot header.
- */
- if (tsnap->kernel_stack != 0)
- tracebytes = machine_trace_thread(thread, tracepos, tracebound, nframes, FALSE);
- tsnap->nkern_frames = tracebytes/(2 * sizeof(vm_offset_t));
- tracepos += tracebytes;
- tracebytes = 0;
- tsnap->user64_p = 0;
-/* Trace user stack, if any */
- if (thread->task->map != kernel_map) {
-/* 64-bit task? */
- if (task_has_64BitAddr(thread->task)) {
- tracebytes = machine_trace_thread64(thread, tracepos, tracebound, nframes, TRUE);
- tsnap->user64_p = 1;
- framesize = 2 * sizeof(addr64_t);
- }
- else {
- tracebytes = machine_trace_thread(thread, tracepos, tracebound, nframes, TRUE);
- framesize = 2 * sizeof(vm_offset_t);
- }
- }
- tsnap->nuser_frames = tracebytes/framesize;
- tracepos += tracebytes;
- tracebytes = 0;
- }
- }
-
-error_exit:
- /* Release stack snapshot wait indicator */
- kdp_snapshot_postflight();
-
- *pbytesTraced = tracepos - tracebuf;
-
- return error;
-}
projects / apple / xnu.git / blobdiff