/* * Ptrace test for GPR/FPR registers in TM Suspend context * * 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 "tm.h" /* Tracer and Tracee Shared Data */ int shm_id; int *cptr, *pptr; float a = FPR_1; float b = FPR_2; float c = FPR_3; float d = FPR_4; __attribute__((used)) void wait_parent(void) { cptr[2] = 1; while (!cptr[1]) asm volatile("" : : : "memory"); } void tm_spd_gpr(void) { unsigned long gpr_buf[18]; unsigned long result, texasr; float fpr_buf[32]; cptr = (int *)shmat(shm_id, NULL, 0); trans: cptr[2] = 0; asm __volatile__( ASM_LOAD_GPR_IMMED(gpr_1) ASM_LOAD_FPR_SINGLE_PRECISION(flt_1) "1: ;" "tbegin.;" "beq 2f;" ASM_LOAD_GPR_IMMED(gpr_2) "tsuspend.;" ASM_LOAD_GPR_IMMED(gpr_4) ASM_LOAD_FPR_SINGLE_PRECISION(flt_4) "bl wait_parent;" "tresume.;" "tend.;" "li 0, 0;" "ori %[res], 0, 0;" "b 3f;" /* Transaction abort handler */ "2: ;" "li 0, 1;" "ori %[res], 0, 0;" "mfspr %[texasr], %[sprn_texasr];" "3: ;" : [res] "=r" (result), [texasr] "=r" (texasr) : [gpr_1]"i"(GPR_1), [gpr_2]"i"(GPR_2), [gpr_4]"i"(GPR_4), [sprn_texasr] "i" (SPRN_TEXASR), [flt_1] "r" (&a), [flt_2] "r" (&b), [flt_4] "r" (&d) : "memory", "r5", "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" ); if (result) { if (!cptr[0]) goto trans; 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); } shmdt((void *)cptr); exit(1); } int trace_tm_spd_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_4)); FAIL_IF(show_fpr(child, fpr)); FAIL_IF(validate_fpr(fpr, FPR_4_REP)); FAIL_IF(show_ckpt_fpr(child, fpr)); FAIL_IF(validate_fpr(fpr, FPR_1_REP)); FAIL_IF(show_ckpt_gpr(child, gpr)); FAIL_IF(validate_gpr(gpr, GPR_1)); FAIL_IF(write_ckpt_gpr(child, GPR_3)); FAIL_IF(write_ckpt_fpr(child, FPR_3_REP)); pptr[0] = 1; pptr[1] = 1; FAIL_IF(stop_trace(child)); return TEST_PASS; } int ptrace_tm_spd_gpr(void) { pid_t pid; int ret, status; SKIP_IF(!have_htm()); 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) tm_spd_gpr(); if (pid) { pptr = (int *)shmat(shm_id, NULL, 0); pptr[0] = 0; pptr[1] = 0; while (!pptr[2]) asm volatile("" : : : "memory"); ret = trace_tm_spd_gpr(pid); if (ret) { kill(pid, SIGTERM); shmdt((void *)pptr); shmctl(shm_id, IPC_RMID, NULL); return TEST_FAIL; } 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_tm_spd_gpr, "ptrace_tm_spd_gpr"); } <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><table summary='commit info' class='commit-info'> <tr><th>author</th><td>Vincent <vincent.stehle@laposte.net></td><td class='right'>2017-01-30 15:06:43 +0100</td></tr> <tr><th>committer</th><td>David S. Miller <davem@davemloft.net></td><td class='right'>2017-01-31 13:07:40 -0500</td></tr> <tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/drivers/vx?id=c73e44269369e936165f0f9b61f1f09a11dae01c'>c73e44269369e936165f0f9b61f1f09a11dae01c</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/drivers/vx?id=c73e44269369e936165f0f9b61f1f09a11dae01c'>patch</a>)</td></tr> <tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=c73e44269369e936165f0f9b61f1f09a11dae01c'>e2188e900ba06302f8ed2746cb07edd3efbc5c35</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/drivers/vx?id=c73e44269369e936165f0f9b61f1f09a11dae01c'>sound/drivers/vx</a></td></tr> <tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/drivers/vx?id=040587af31228d82c52267f717c9fcdb65f36335'>040587af31228d82c52267f717c9fcdb65f36335</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/drivers/vx?id=c73e44269369e936165f0f9b61f1f09a11dae01c&id2=040587af31228d82c52267f717c9fcdb65f36335'>diff</a>)</td></tr></table> <div class='commit-subject'>net: thunderx: avoid dereferencing xcv when NULL</div><div class='commit-msg'>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> </div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=c73e44269369e936165f0f9b61f1f09a11dae01c'>Diffstat</a> (limited to 'sound/drivers/vx')</div><table summary='diffstat' class='diffstat'>