diff options
Diffstat (limited to 'tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vmx.c')
| -rw-r--r-- | tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vmx.c | 74 |
1 files changed, 52 insertions, 22 deletions
diff --git a/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vmx.c b/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vmx.c index 48ad01499b1a..b6d52730a0d8 100644 --- a/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vmx.c +++ b/tools/testing/selftests/powerpc/tm/tm-signal-context-chk-vmx.c @@ -5,10 +5,11 @@ * Test the kernel's signal frame code. * * The kernel sets up two sets of ucontexts if the signal was to be - * delivered while the thread was in a transaction. + * delivered while the thread was in a transaction (referred too as + * first and second contexts). * Expected behaviour is that the checkpointed state is in the user - * context passed to the signal handler. The speculated state can be - * accessed with the uc_link pointer. + * context passed to the signal handler (first context). The speculated + * state can be accessed with the uc_link pointer (second context). * * The rationale for this is that if TM unaware code (which linked * against TM libs) installs a signal handler it will not know of the @@ -29,18 +30,24 @@ #define MAX_ATTEMPT 500000 -#define NV_VMX_REGS 12 +#define NV_VMX_REGS 12 /* Number of non-volatile VMX registers */ +#define VMX20 20 /* First non-volatile register to check in vr20-31 subset */ long tm_signal_self_context_load(pid_t pid, long *gprs, double *fps, vector int *vms, vector int *vss); -static sig_atomic_t fail; +static sig_atomic_t fail, broken; +/* Test only non-volatile registers, i.e. 12 vmx registers from vr20 to vr31 */ vector int vms[] = { - {1, 2, 3, 4 },{5, 6, 7, 8 },{9, 10,11,12}, + /* First context will be set with these values, i.e. non-speculative */ + /* VMX20 , VMX21 , ... */ + { 1, 2, 3, 4},{ 5, 6, 7, 8},{ 9,10,11,12}, {13,14,15,16},{17,18,19,20},{21,22,23,24}, {25,26,27,28},{29,30,31,32},{33,34,35,36}, {37,38,39,40},{41,42,43,44},{45,46,47,48}, - {-1, -2, -3, -4}, {-5, -6, -7, -8}, {-9, -10,-11,-12}, + /* Second context will be set with these values, i.e. speculative */ + /* VMX20 , VMX21 , ... */ + { -1, -2, -3, -4},{ -5, -6, -7, -8},{ -9,-10,-11,-12}, {-13,-14,-15,-16},{-17,-18,-19,-20},{-21,-22,-23,-24}, {-25,-26,-27,-28},{-29,-30,-31,-32},{-33,-34,-35,-36}, {-37,-38,-39,-40},{-41,-42,-43,-44},{-45,-46,-47,-48} @@ -48,26 +55,43 @@ vector int vms[] = { static void signal_usr1(int signum, siginfo_t *info, void *uc) { - int i; + int i, j; ucontext_t *ucp = uc; ucontext_t *tm_ucp = ucp->uc_link; - for (i = 0; i < NV_VMX_REGS && !fail; i++) { - fail = memcmp(ucp->uc_mcontext.v_regs->vrregs[i + 20], + for (i = 0; i < NV_VMX_REGS; i++) { + /* Check first context. Print all mismatches. */ + fail = memcmp(ucp->uc_mcontext.v_regs->vrregs[VMX20 + i], &vms[i], sizeof(vector int)); - fail |= memcmp(tm_ucp->uc_mcontext.v_regs->vrregs[i + 20], - &vms[i + NV_VMX_REGS], sizeof (vector int)); - if (fail) { - int j; + broken = 1; + printf("VMX%d (1st context) == 0x", VMX20 + i); + /* Print actual value in first context. */ + for (j = 0; j < 4; j++) + printf("%08x", ucp->uc_mcontext.v_regs->vrregs[VMX20 + i][j]); + printf(" instead of 0x"); + /* Print expected value. */ + for (j = 0; j < 4; j++) + printf("%08x", vms[i][j]); + printf(" (expected)\n"); + } + } - fprintf(stderr, "Failed on %d vmx 0x", i); + for (i = 0; i < NV_VMX_REGS; i++) { + /* Check second context. Print all mismatches. */ + fail = memcmp(tm_ucp->uc_mcontext.v_regs->vrregs[VMX20 + i], + &vms[NV_VMX_REGS + i], sizeof (vector int)); + if (fail) { + broken = 1; + printf("VMX%d (2nd context) == 0x", NV_VMX_REGS + i); + /* Print actual value in second context. */ + for (j = 0; j < 4; j++) + printf("%08x", tm_ucp->uc_mcontext.v_regs->vrregs[VMX20 + i][j]); + printf(" instead of 0x"); + /* Print expected value. */ for (j = 0; j < 4; j++) - fprintf(stderr, "%04x", ucp->uc_mcontext.v_regs->vrregs[i + 20][j]); - fprintf(stderr, " vs 0x"); - for (j = 0 ; j < 4; j++) - fprintf(stderr, "%04x", tm_ucp->uc_mcontext.v_regs->vrregs[i + 20][j]); - fprintf(stderr, "\n"); + printf("%08x", vms[NV_VMX_REGS + i][j]); + printf(" (expected)\n"); } } } @@ -90,13 +114,19 @@ static int tm_signal_context_chk() } i = 0; - while (i < MAX_ATTEMPT && !fail) { + while (i < MAX_ATTEMPT && !broken) { + /* + * tm_signal_self_context_load will set both first and second + * contexts accordingly to the values passed through non-NULL + * array pointers to it, in that case 'vms', and invoke the + * signal handler installed for SIGUSR1. + */ rc = tm_signal_self_context_load(pid, NULL, NULL, vms, NULL); FAIL_IF(rc != pid); i++; } - return fail; + return (broken); } int main(void) |