8d5f07fa3b
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1098 c046a42c-6fe2-441c-8c8c-71466251a162
157 lines
2.7 KiB
C
157 lines
2.7 KiB
C
#include <math.h>
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#include <fenv.h>
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#include "exec.h"
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void OPPROTO do_fabss(void)
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{
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FT0 = fabsf(FT1);
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}
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void OPPROTO do_fsqrts(void)
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{
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FT0 = sqrtf(FT1);
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}
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void OPPROTO do_fsqrtd(void)
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{
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DT0 = sqrt(DT1);
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}
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void OPPROTO do_fcmps (void)
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{
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if (isnan(FT0) || isnan(FT1)) {
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T0 = FSR_FCC1 | FSR_FCC0;
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} else if (FT0 < FT1) {
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T0 = FSR_FCC0;
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} else if (FT0 > FT1) {
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T0 = FSR_FCC1;
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} else {
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T0 = 0;
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}
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env->fsr = T0;
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}
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void OPPROTO do_fcmpd (void)
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{
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if (isnan(DT0) || isnan(DT1)) {
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T0 = FSR_FCC1 | FSR_FCC0;
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} else if (DT0 < DT1) {
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T0 = FSR_FCC0;
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} else if (DT0 > DT1) {
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T0 = FSR_FCC1;
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} else {
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T0 = 0;
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}
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env->fsr = T0;
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}
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void OPPROTO helper_ld_asi(int asi, int size, int sign)
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{
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switch(asi) {
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case 3: /* MMU probe */
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T1 = 0;
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return;
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case 4: /* read MMU regs */
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{
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int temp, reg = (T0 >> 8) & 0xf;
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temp = env->mmuregs[reg];
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if (reg == 3 || reg == 4) /* Fault status, addr cleared on read*/
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env->mmuregs[reg] = 0;
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T1 = temp;
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}
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return;
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case 0x20 ... 0x2f: /* MMU passthrough */
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{
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int temp;
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cpu_physical_memory_read(T0, (void *) &temp, size);
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bswap32s(&temp);
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T1 = temp;
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}
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return;
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default:
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T1 = 0;
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return;
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}
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}
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void OPPROTO helper_st_asi(int asi, int size, int sign)
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{
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switch(asi) {
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case 3: /* MMU flush */
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return;
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case 4: /* write MMU regs */
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{
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int reg = (T0 >> 8) & 0xf;
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if (reg == 0) {
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env->mmuregs[reg] &= ~(MMU_E | MMU_NF);
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env->mmuregs[reg] |= T1 & (MMU_E | MMU_NF);
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} else
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env->mmuregs[reg] = T1;
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return;
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}
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case 0x20 ... 0x2f: /* MMU passthrough */
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{
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int temp = T1;
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bswap32s(&temp);
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cpu_physical_memory_write(T0, (void *) &temp, size);
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}
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return;
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default:
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return;
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}
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}
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#if 0
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void do_ldd_raw(uint32_t addr)
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{
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T1 = ldl_raw((void *) addr);
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T0 = ldl_raw((void *) (addr + 4));
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}
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#if !defined(CONFIG_USER_ONLY)
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void do_ldd_user(uint32_t addr)
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{
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T1 = ldl_user((void *) addr);
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T0 = ldl_user((void *) (addr + 4));
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}
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void do_ldd_kernel(uint32_t addr)
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{
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T1 = ldl_kernel((void *) addr);
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T0 = ldl_kernel((void *) (addr + 4));
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}
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#endif
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#endif
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void OPPROTO helper_rett()
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{
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int cwp;
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env->psret = 1;
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cwp = (env->cwp + 1) & (NWINDOWS - 1);
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if (env->wim & (1 << cwp)) {
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raise_exception(TT_WIN_UNF);
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}
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set_cwp(cwp);
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env->psrs = env->psrps;
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}
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void helper_ldfsr(void)
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{
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switch (env->fsr & FSR_RD_MASK) {
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case FSR_RD_NEAREST:
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fesetround(FE_TONEAREST);
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break;
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case FSR_RD_ZERO:
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fesetround(FE_TOWARDZERO);
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break;
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case FSR_RD_POS:
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fesetround(FE_UPWARD);
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break;
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case FSR_RD_NEG:
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fesetround(FE_DOWNWARD);
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break;
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}
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}
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