/* * Ptrace test for GPR/FPR registers * * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include "ptrace.h" #include "ptrace-gpr.h" #include "reg.h" /* Tracer and Tracee Shared Data */ int shm_id; int *cptr, *pptr; float a = FPR_1; float b = FPR_2; float c = FPR_3; void gpr(void) { unsigned long gpr_buf[18]; float fpr_buf[32]; cptr = (int *)shmat(shm_id, NULL, 0); asm __volatile__( ASM_LOAD_GPR_IMMED(gpr_1) ASM_LOAD_FPR_SINGLE_PRECISION(flt_1) : : [gpr_1]"i"(GPR_1), [flt_1] "r" (&a) : "memory", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31" ); cptr[1] = 1; while (!cptr[0]) asm volatile("" : : : "memory"); shmdt((void *)cptr); store_gpr(gpr_buf); store_fpr_single_precision(fpr_buf); if (validate_gpr(gpr_buf, GPR_3)) exit(1); if (validate_fpr_float(fpr_buf, c)) exit(1); exit(0); } int trace_gpr(pid_t child) { unsigned long gpr[18]; unsigned long fpr[32]; FAIL_IF(start_trace(child)); FAIL_IF(show_gpr(child, gpr)); FAIL_IF(validate_gpr(gpr, GPR_1)); FAIL_IF(show_fpr(child, fpr)); FAIL_IF(validate_fpr(fpr, FPR_1_REP)); FAIL_IF(write_gpr(child, GPR_3)); FAIL_IF(write_fpr(child, FPR_3_REP)); FAIL_IF(stop_trace(child)); return TEST_PASS; } int ptrace_gpr(void) { pid_t pid; int ret, status; shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT); pid = fork(); if (pid < 0) { perror("fork() failed"); return TEST_FAIL; } if (pid == 0) gpr(); if (pid) { pptr = (int *)shmat(shm_id, NULL, 0); while (!pptr[1]) asm volatile("" : : : "memory"); ret = trace_gpr(pid); if (ret) { kill(pid, SIGTERM); shmdt((void *)pptr); shmctl(shm_id, IPC_RMID, NULL); return TEST_FAIL; } pptr[0] = 1; shmdt((void *)pptr); ret = wait(&status); shmctl(shm_id, IPC_RMID, NULL); if (ret != pid) { printf("Child's exit status not captured\n"); return TEST_FAIL; } return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : TEST_PASS; } return TEST_PASS; } int main(int argc, char *argv[]) { return test_harness(ptrace_gpr, "ptrace_gpr"); } tter
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authorVincent <vincent.stehle@laposte.net>2017-01-30 15:06:43 +0100
committerDavid S. Miller <davem@davemloft.net>2017-01-31 13:07:40 -0500
commitc73e44269369e936165f0f9b61f1f09a11dae01c (patch)
treee2188e900ba06302f8ed2746cb07edd3efbc5c35 /tools/perf/tests/.gitignore
parent040587af31228d82c52267f717c9fcdb65f36335 (diff)
net: thunderx: avoid dereferencing xcv when NULL
This fixes the following smatch and coccinelle warnings: drivers/net/ethernet/cavium/thunder/thunder_xcv.c:119 xcv_setup_link() error: we previously assumed 'xcv' could be null (see line 118) [smatch] drivers/net/ethernet/cavium/thunder/thunder_xcv.c:119:16-20: ERROR: xcv is NULL but dereferenced. [coccinelle] Fixes: 6465859aba1e66a5 ("net: thunderx: Add RGMII interface type support") Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net> Cc: Sunil Goutham <sgoutham@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/tests/.gitignore')