/* * Ptrace test for TAR, PPR, DSCR 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-tar.h" /* Tracer and Tracee Shared Data */ int shm_id; int *cptr; int *pptr; void tar(void) { unsigned long reg[3]; int ret; cptr = (int *)shmat(shm_id, NULL, 0); printf("%-30s TAR: %u PPR: %lx DSCR: %u\n", user_write, TAR_1, PPR_1, DSCR_1); mtspr(SPRN_TAR, TAR_1); mtspr(SPRN_PPR, PPR_1); mtspr(SPRN_DSCR, DSCR_1); cptr[2] = 1; /* Wait on parent */ while (!cptr[0]) asm volatile("" : : : "memory"); reg[0] = mfspr(SPRN_TAR); reg[1] = mfspr(SPRN_PPR); reg[2] = mfspr(SPRN_DSCR); printf("%-30s TAR: %lu PPR: %lx DSCR: %lu\n", user_read, reg[0], reg[1], reg[2]); /* Unblock the parent now */ cptr[1] = 1; shmdt((int *)cptr); ret = validate_tar_registers(reg, TAR_2, PPR_2, DSCR_2); if (ret) exit(1); exit(0); } int trace_tar(pid_t child) { unsigned long reg[3]; FAIL_IF(start_trace(child)); FAIL_IF(show_tar_registers(child, reg)); printf("%-30s TAR: %lu PPR: %lx DSCR: %lu\n", ptrace_read_running, reg[0], reg[1], reg[2]); FAIL_IF(validate_tar_registers(reg, TAR_1, PPR_1, DSCR_1)); FAIL_IF(stop_trace(child)); return TEST_PASS; } int trace_tar_write(pid_t child) { FAIL_IF(start_trace(child)); FAIL_IF(write_tar_registers(child, TAR_2, PPR_2, DSCR_2)); printf("%-30s TAR: %u PPR: %lx DSCR: %u\n", ptrace_write_running, TAR_2, PPR_2, DSCR_2); FAIL_IF(stop_trace(child)); return TEST_PASS; } int ptrace_tar(void) { pid_t pid; int ret, status; shm_id = shmget(IPC_PRIVATE, sizeof(int) * 3, 0777|IPC_CREAT); pid = fork(); if (pid < 0) { perror("fork() failed"); return TEST_FAIL; } if (pid == 0) tar(); if (pid) { pptr = (int *)shmat(shm_id, NULL, 0); pptr[0] = 0; pptr[1] = 0; while (!pptr[2]) asm volatile("" : : : "memory"); ret = trace_tar(pid); if (ret) return ret; ret = trace_tar_write(pid); if (ret) return ret; /* Unblock the child now */ pptr[0] = 1; /* Wait on child */ while (!pptr[1]) asm volatile("" : : : "memory"); shmdt((int *)pptr); ret = wait(&status); shmctl(shm_id, IPC_RMID, NULL); if (ret != pid) { printf("Child's exit status not captured\n"); return TEST_PASS; } return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : TEST_PASS; } return TEST_PASS; } int main(int argc, char *argv[]) { return test_harness(ptrace_tar, "ptrace_tar"); } type='search' size='10' name='q' value=''/> <input type='submit' value='search'/> </form> </td></tr></table> <div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&id=33e962c8871f015f5c8978384553dddcf5b81b22'>root</a>/<a href='/cgit.cgi/linux/net-next.git/diff/sound?h=nds-private-remove&id=33e962c8871f015f5c8978384553dddcf5b81b22'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc?h=nds-private-remove&id=33e962c8871f015f5c8978384553dddcf5b81b22'>soc</a>/<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/codecs?h=nds-private-remove&id=33e962c8871f015f5c8978384553dddcf5b81b22'>codecs</a>/<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/codecs/wm8900.c?h=nds-private-remove&id=33e962c8871f015f5c8978384553dddcf5b81b22'>wm8900.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='33e962c8871f015f5c8978384553dddcf5b81b22'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&id=33e962c8871f015f5c8978384553dddcf5b81b22'>Diffstat</a> (limited to 'sound/soc/codecs/wm8900.c')</div><table summary='diffstat' class='diffstat'>