1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 23237f281SWang Nan #include <string.h> 33237f281SWang Nan #include "perf_regs.h" 43237f281SWang Nan #include "thread.h" 53237f281SWang Nan #include "map.h" 6c54d241bSArnaldo Carvalho de Melo #include "maps.h" 73237f281SWang Nan #include "event.h" 83237f281SWang Nan #include "debug.h" 93237f281SWang Nan #include "tests/tests.h" 103237f281SWang Nan 113237f281SWang Nan #define STACK_SIZE 8192 123237f281SWang Nan 133237f281SWang Nan static int sample_ustack(struct perf_sample *sample, 143237f281SWang Nan struct thread *thread, u64 *regs) 153237f281SWang Nan { 163237f281SWang Nan struct stack_dump *stack = &sample->user_stack; 173237f281SWang Nan struct map *map; 183237f281SWang Nan unsigned long sp; 193237f281SWang Nan u64 stack_size, *buf; 203237f281SWang Nan 213237f281SWang Nan buf = malloc(STACK_SIZE); 223237f281SWang Nan if (!buf) { 233237f281SWang Nan pr_debug("failed to allocate sample uregs data\n"); 243237f281SWang Nan return -1; 253237f281SWang Nan } 263237f281SWang Nan 273237f281SWang Nan sp = (unsigned long) regs[PERF_REG_ARM64_SP]; 283237f281SWang Nan 29fe87797dSArnaldo Carvalho de Melo map = maps__find(thread->maps, (u64)sp); 303237f281SWang Nan if (!map) { 313237f281SWang Nan pr_debug("failed to get stack map\n"); 323237f281SWang Nan free(buf); 333237f281SWang Nan return -1; 343237f281SWang Nan } 353237f281SWang Nan 36*e5116f46SIan Rogers stack_size = map__end(map) - sp; 373237f281SWang Nan stack_size = stack_size > STACK_SIZE ? STACK_SIZE : stack_size; 383237f281SWang Nan 393237f281SWang Nan memcpy(buf, (void *) sp, stack_size); 403237f281SWang Nan stack->data = (char *) buf; 413237f281SWang Nan stack->size = stack_size; 423237f281SWang Nan return 0; 433237f281SWang Nan } 443237f281SWang Nan 453237f281SWang Nan int test__arch_unwind_sample(struct perf_sample *sample, 463237f281SWang Nan struct thread *thread) 473237f281SWang Nan { 483237f281SWang Nan struct regs_dump *regs = &sample->user_regs; 493237f281SWang Nan u64 *buf; 503237f281SWang Nan 513237f281SWang Nan buf = calloc(1, sizeof(u64) * PERF_REGS_MAX); 523237f281SWang Nan if (!buf) { 533237f281SWang Nan pr_debug("failed to allocate sample uregs data\n"); 543237f281SWang Nan return -1; 553237f281SWang Nan } 563237f281SWang Nan 573237f281SWang Nan perf_regs_load(buf); 583237f281SWang Nan regs->abi = PERF_SAMPLE_REGS_ABI; 593237f281SWang Nan regs->regs = buf; 603237f281SWang Nan regs->mask = PERF_REGS_MASK; 613237f281SWang Nan 623237f281SWang Nan return sample_ustack(sample, thread, buf); 633237f281SWang Nan } 64