| @@ -1,85 +0,0 @@ | |||||
| // reproduce segfault in zhemv() from zsymv_L_sse2.S | |||||
| // | |||||
| #include <stdlib.h> | |||||
| #include <stdio.h> | |||||
| #include <math.h> | |||||
| #include <string.h> | |||||
| #include <complex.h> | |||||
| #include <sys/mman.h> | |||||
| #define CALL_ZHEMV zhemv_ | |||||
| void zhemv_(char *UPLO, int *N, double *alpha, double *A, int *LDA, | |||||
| double *X, int *INCX, double *beta, double *Y, int *INCY); | |||||
| int main () { | |||||
| // zhemv parameters | |||||
| char uplo = 'L'; | |||||
| int n = 14; | |||||
| int lda = 16; | |||||
| int incx = 1; | |||||
| int incy = 1; | |||||
| double *A, *X, *Y; | |||||
| double alpha[] = {1, 0}; | |||||
| double beta[] = {0, 0}; | |||||
| // other parameters | |||||
| int i, j; | |||||
| double *data, *data_end, *no_access; | |||||
| double real, imag; | |||||
| int size; | |||||
| size_t len; | |||||
| int A_offset; | |||||
| size = sizeof(complex double); | |||||
| len = lda * lda * size; | |||||
| // allocate memory for data | |||||
| // use mmap address hints to set up inaccessible memory section following data | |||||
| no_access = mmap(NULL, len, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); | |||||
| data = mmap(no_access, len, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); | |||||
| data_end = data + (lda * lda * 2); | |||||
| printf("data start/end: %p/%p. Blocked region starts at %p.\n", data, data_end, no_access); | |||||
| // set up pointer offsets into data | |||||
| A_offset = (lda + 1) * 2; | |||||
| A = data + A_offset * 2; // A starts in the third column of data matrix | |||||
| X = data + A_offset + 2; // X is the second column of data matrix | |||||
| Y = (double *)malloc(n * incy * size); // Y is stored elsewhere | |||||
| printf("Address of data: %p; A: %p; X: %p; Y: %p.\n", data, A, X, Y); | |||||
| // hermitian matrix | |||||
| srand(lda); | |||||
| for (j=0; j<lda; j++) { | |||||
| real = (double) rand() / RAND_MAX; | |||||
| imag = 0; | |||||
| data[(j*lda + j) * 2] = real; | |||||
| data[(j*lda + j) * 2 + 1] = imag; | |||||
| for (i=j+1; i<lda; i++) { | |||||
| real = (double) rand() / RAND_MAX; | |||||
| imag = (double) rand() / RAND_MAX; | |||||
| data[(j*lda + i) * 2] = real; | |||||
| data[(j*lda + i) * 2 + 1] = imag; | |||||
| data[(i*lda + j) * 2] = real; | |||||
| data[(i*lda + j) * 2 + 1] = -imag; | |||||
| } | |||||
| } | |||||
| for (int i=0; i<incy*n*2; i++) { | |||||
| Y[i] = 0; | |||||
| } | |||||
| CALL_ZHEMV(&uplo, &n, alpha, A, &lda, X, &incx, beta, Y, &incy); | |||||
| printf("Finished call to zhemv.\n"); | |||||
| munmap(no_access, len); | |||||
| munmap(data, len); | |||||
| } | |||||