Merge tag 'aspeed-5.5-devicetree-fixes' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6-microblaze.git] / tools / perf / arch / powerpc / tests / dwarf-unwind.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <string.h>
3 #include "perf_regs.h"
4 #include "thread.h"
5 #include "map.h"
6 #include "maps.h"
7 #include "event.h"
8 #include "debug.h"
9 #include "tests/tests.h"
10 #include "arch-tests.h"
11
12 #define STACK_SIZE 8192
13
14 static int sample_ustack(struct perf_sample *sample,
15                          struct thread *thread, u64 *regs)
16 {
17         struct stack_dump *stack = &sample->user_stack;
18         struct map *map;
19         unsigned long sp;
20         u64 stack_size, *buf;
21
22         buf = malloc(STACK_SIZE);
23         if (!buf) {
24                 pr_debug("failed to allocate sample uregs data\n");
25                 return -1;
26         }
27
28         sp = (unsigned long) regs[PERF_REG_POWERPC_R1];
29
30         map = maps__find(thread->maps, (u64)sp);
31         if (!map) {
32                 pr_debug("failed to get stack map\n");
33                 free(buf);
34                 return -1;
35         }
36
37         stack_size = map->end - sp;
38         stack_size = stack_size > STACK_SIZE ? STACK_SIZE : stack_size;
39
40         memcpy(buf, (void *) sp, stack_size);
41         stack->data = (char *) buf;
42         stack->size = stack_size;
43         return 0;
44 }
45
46 int test__arch_unwind_sample(struct perf_sample *sample,
47                              struct thread *thread)
48 {
49         struct regs_dump *regs = &sample->user_regs;
50         u64 *buf;
51
52         buf = calloc(1, sizeof(u64) * PERF_REGS_MAX);
53         if (!buf) {
54                 pr_debug("failed to allocate sample uregs data\n");
55                 return -1;
56         }
57
58         perf_regs_load(buf);
59         regs->abi  = PERF_SAMPLE_REGS_ABI;
60         regs->regs = buf;
61         regs->mask = PERF_REGS_MASK;
62
63         return sample_ustack(sample, thread, buf);
64 }