#if defined(__mips_hard_float) #include #include #include #include #define MAX_ARR 24 #define PERROR \ printf("This test is testing mips32r2 instructions in fpu64 mode.\n"); #define FLAGS_RM_MASK 0xFFFFFFFF typedef enum { CVTLS, CVTLD, ROUNDLS, ROUNDLD, TRUNCLS, TRUNCLD, FLOORLS, FLOORLD, CEILLS, CEILLD } flt_round_op_t; const char *flt_round_op_names[] = { "cvt.l.s", "cvt.l.d", "round.l.s", "round.l.d", "trunc.l.s", "trunc.l.d", "floor.l.s", "floor.l.d" "ceil.l.s", "ceil.l.d" }; typedef enum { TO_NEAREST=0, TO_ZERO, TO_PLUS_INFINITY, TO_MINUS_INFINITY } round_mode_t; char *round_mode_name[] = { "near", "zero", "+inf", "-inf" }; const float fs_f[] = { 0, 456.25, 3, -1, 1384.5, -7.25, 1000000000, -5786.25, 1752, 0.015625, 0.03125, -248562.75, -45786.5, 456, 34.03125, 45786.75, 1752065, 107, -45667.25, -7, -347856.5, 356047, -1.25, 23.0625 }; const double fs_d[] = { 0, 456.25, 3, -1, 1384.5, -7.25, 1000000000, -5786.25, 1752, 0.015625, 0.03125, -24856226678933.75, -45786.5, 456, 34.03125, 45786.75, 1752065, 107, -45667.25, -7, -347856.5, 356047, -1.25, 23.0625 }; #define UNOPsl(op) \ __asm__ __volatile__( \ op" $f0, %2" "\n\t" \ "sdc1 $f0, 0(%1)" "\n\t" \ "cfc1 %0, $31" "\n\t" \ : "=r" (fcsr) \ : "r"(&fd_l), "f"(fs_f[i]) \ : "$f0" \ ); #define UNOPdl(op) \ __asm__ __volatile__( \ op" $f0, %2" "\n\t" \ "sdc1 $f0, 0(%1)" "\n\t" \ "cfc1 %0, $31" "\n\t" \ : "=r" (fcsr) \ : "r"(&fd_l), "f"(fs_d[i]) \ : "$f0" \ ); #define TEST_FPU64 \ __asm__ __volatile__( \ "cvt.l.s $f0, $f0" "\n\t" \ : \ : \ : "$f0" \ ); #if (__mips==32) && (__mips_isa_rev>=2) && \ ((__mips_fpr==64) || (__mips_fpr==xx)) void set_rounding_mode(round_mode_t mode) { switch(mode) { case TO_NEAREST: __asm__ volatile("ctc1 $zero, $31" "\n\t"); break; case TO_ZERO: __asm__ volatile("li $t0, 0x1" "\n\t" "ctc1 $t0, $31" "\n\t"); break; case TO_PLUS_INFINITY: __asm__ volatile("li $t0, 0x2" "\n\t" "ctc1 $t0, $31" "\n\t"); break; case TO_MINUS_INFINITY: __asm__ volatile("li $t0, 0x3" "\n\t" "ctc1 $t0, $31" "\n\t"); break; } } struct test { void (*test)(void); int sig; int code; }; static void handler(int sig) { PERROR; exit(0); } int FCSRRoundingMode(flt_round_op_t op) { long long int fd_l; int i; int fcsr = 0; round_mode_t rm; for (rm = TO_NEAREST; rm <= TO_MINUS_INFINITY; rm ++) { printf("roundig mode: %s\n", round_mode_name[rm]); for (i = 0; i < MAX_ARR; i++) { set_rounding_mode(rm); switch(op) { case CVTLS: UNOPsl("cvt.l.s"); printf("%s %lld %f\n", flt_round_op_names[op], fd_l, fs_f[i]); printf("fcsr: 0x%x\n", fcsr & FLAGS_RM_MASK); break; case CVTLD: UNOPdl("cvt.l.d"); printf("%s %lld %lf\n", flt_round_op_names[op], fd_l, fs_d[i]); printf("fcsr: 0x%x\n", fcsr & FLAGS_RM_MASK); break; case ROUNDLS: UNOPsl("round.l.s"); printf("%s %lld %f\n", flt_round_op_names[op], fd_l, fs_f[i]); printf("fcsr: 0x%x\n", fcsr & FLAGS_RM_MASK); break; case ROUNDLD: UNOPdl("round.l.d"); printf("%s %lld %lf\n", flt_round_op_names[op], fd_l, fs_d[i]); printf("fcsr: 0x%x\n", fcsr & FLAGS_RM_MASK); break; case TRUNCLS: UNOPsl("trunc.l.s"); printf("%s %lld %f\n", flt_round_op_names[op], fd_l, fs_f[i]); printf("fcsr: 0x%x\n", fcsr & FLAGS_RM_MASK); break; case TRUNCLD: UNOPdl("trunc.l.d"); printf("%s %lld %lf\n", flt_round_op_names[op], fd_l, fs_d[i]); printf("fcsr: 0x%x\n", fcsr & FLAGS_RM_MASK); break; case FLOORLS: UNOPsl("floor.l.s"); printf("%s %lld %f\n", flt_round_op_names[op], fd_l, fs_f[i]); printf("fcsr: 0x%x\n", fcsr & FLAGS_RM_MASK); break; case FLOORLD: UNOPdl("floor.l.d"); printf("%s %lld %lf\n", flt_round_op_names[op], fd_l, fs_d[i]); printf("fcsr: 0x%x\n", fcsr & FLAGS_RM_MASK); break; case CEILLS: UNOPsl("ceil.l.s"); printf("%s %lld %f\n", flt_round_op_names[op], fd_l, fs_f[i]); printf("fcsr: 0x%x\n", fcsr & FLAGS_RM_MASK); break; case CEILLD: UNOPdl("ceil.l.d"); printf("%s %lld %lf\n", flt_round_op_names[op], fd_l, fs_d[i]); printf("fcsr: 0x%x\n", fcsr & FLAGS_RM_MASK); break; default: printf("error\n"); break; } } } return 0; } #endif int main() { #if (__mips==32) && (__mips_isa_rev>=2) && \ ((__mips_fpr==64) || (__mips_fpr==xx)) flt_round_op_t op; signal(SIGILL, handler); /* Test fpu64 mode. */ TEST_FPU64; printf("-------------------------- %s --------------------------\n", "test FPU Conversion Operations Using the FCSR Rounding Mode"); for (op = CVTLS; op <= CEILLD; op++) FCSRRoundingMode(op); #else PERROR; #endif return 0; } #else int main() { return 0; } #endif