1*b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 2aa16b81fSJiri Olsa #include <string.h> 3aa16b81fSJiri Olsa #include "perf_regs.h" 4aa16b81fSJiri Olsa #include "thread.h" 5aa16b81fSJiri Olsa #include "map.h" 6aa16b81fSJiri Olsa #include "event.h" 784f5d36fSJiri Olsa #include "debug.h" 8aa16b81fSJiri Olsa #include "tests/tests.h" 9d8b167f9SMatt Fleming #include "arch-tests.h" 10aa16b81fSJiri Olsa 11aa16b81fSJiri Olsa #define STACK_SIZE 8192 12aa16b81fSJiri Olsa 13aa16b81fSJiri Olsa static int sample_ustack(struct perf_sample *sample, 14aa16b81fSJiri Olsa struct thread *thread, u64 *regs) 15aa16b81fSJiri Olsa { 16aa16b81fSJiri Olsa struct stack_dump *stack = &sample->user_stack; 17aa16b81fSJiri Olsa struct map *map; 18aa16b81fSJiri Olsa unsigned long sp; 19aa16b81fSJiri Olsa u64 stack_size, *buf; 20aa16b81fSJiri Olsa 21aa16b81fSJiri Olsa buf = malloc(STACK_SIZE); 22aa16b81fSJiri Olsa if (!buf) { 23aa16b81fSJiri Olsa pr_debug("failed to allocate sample uregs data\n"); 24aa16b81fSJiri Olsa return -1; 25aa16b81fSJiri Olsa } 26aa16b81fSJiri Olsa 27aa16b81fSJiri Olsa sp = (unsigned long) regs[PERF_REG_X86_SP]; 28aa16b81fSJiri Olsa 29aeffe2abSIngo Molnar map = map_groups__find(thread->mg, MAP__VARIABLE, (u64) sp); 30aa16b81fSJiri Olsa if (!map) { 31aa16b81fSJiri Olsa pr_debug("failed to get stack map\n"); 32763d7f5fSMasanari Iida free(buf); 33aa16b81fSJiri Olsa return -1; 34aa16b81fSJiri Olsa } 35aa16b81fSJiri Olsa 36aa16b81fSJiri Olsa stack_size = map->end - sp; 37aa16b81fSJiri Olsa stack_size = stack_size > STACK_SIZE ? STACK_SIZE : stack_size; 38aa16b81fSJiri Olsa 39aa16b81fSJiri Olsa memcpy(buf, (void *) sp, stack_size); 40aa16b81fSJiri Olsa stack->data = (char *) buf; 41aa16b81fSJiri Olsa stack->size = stack_size; 42aa16b81fSJiri Olsa return 0; 43aa16b81fSJiri Olsa } 44aa16b81fSJiri Olsa 45aa16b81fSJiri Olsa int test__arch_unwind_sample(struct perf_sample *sample, 46aa16b81fSJiri Olsa struct thread *thread) 47aa16b81fSJiri Olsa { 48aa16b81fSJiri Olsa struct regs_dump *regs = &sample->user_regs; 49aa16b81fSJiri Olsa u64 *buf; 50aa16b81fSJiri Olsa 51aa16b81fSJiri Olsa buf = malloc(sizeof(u64) * PERF_REGS_MAX); 52aa16b81fSJiri Olsa if (!buf) { 53aa16b81fSJiri Olsa pr_debug("failed to allocate sample uregs data\n"); 54aa16b81fSJiri Olsa return -1; 55aa16b81fSJiri Olsa } 56aa16b81fSJiri Olsa 57aa16b81fSJiri Olsa perf_regs_load(buf); 58aa16b81fSJiri Olsa regs->abi = PERF_SAMPLE_REGS_ABI; 59aa16b81fSJiri Olsa regs->regs = buf; 60352ea45aSJiri Olsa regs->mask = PERF_REGS_MASK; 61aa16b81fSJiri Olsa 62aa16b81fSJiri Olsa return sample_ustack(sample, thread, buf); 63aa16b81fSJiri Olsa } 64