mirror of https://github.com/proxmox/mirror_qemu
fixed float to int overflow bug - added ARM host correct roundings for float rounding
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@237 c046a42c-6fe2-441c-8c8c-71466251a162master
bellard
parent
79638566e5
commit
1e5ffbedde
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@ -19,6 +19,57 @@
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*/
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#include "exec-i386.h"
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const uint8_t parity_table[256] = {
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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};
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/* modulo 17 table */
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const uint8_t rclw_table[32] = {
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0, 1, 2, 3, 4, 5, 6, 7,
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8, 9,10,11,12,13,14,15,
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16, 0, 1, 2, 3, 4, 5, 6,
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7, 8, 9,10,11,12,13,14,
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};
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/* modulo 9 table */
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const uint8_t rclb_table[32] = {
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0, 1, 2, 3, 4, 5, 6, 7,
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8, 0, 1, 2, 3, 4, 5, 6,
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7, 8, 0, 1, 2, 3, 4, 5,
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6, 7, 8, 0, 1, 2, 3, 4,
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};
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const CPU86_LDouble f15rk[7] =
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{
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0.00000000000000000000L,
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@ -693,7 +744,29 @@ void helper_fsincos(void)
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void helper_frndint(void)
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{
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ST0 = rint(ST0);
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CPU86_LDouble a;
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a = ST0;
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#ifdef __arm__
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switch(env->fpuc & RC_MASK) {
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default:
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case RC_NEAR:
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asm("rndd %0, %1" : "=f" (a) : "f"(a));
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break;
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case RC_DOWN:
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asm("rnddm %0, %1" : "=f" (a) : "f"(a));
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break;
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case RC_UP:
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asm("rnddp %0, %1" : "=f" (a) : "f"(a));
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break;
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case RC_CHOP:
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asm("rnddz %0, %1" : "=f" (a) : "f"(a));
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break;
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}
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#else
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a = rint(a);
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#endif
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ST0 = a;
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}
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void helper_fscale(void)
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80
op-i386.c
80
op-i386.c
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@ -19,57 +19,6 @@
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*/
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#include "exec-i386.h"
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uint8_t parity_table[256] = {
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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};
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/* modulo 17 table */
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const uint8_t rclw_table[32] = {
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0, 1, 2, 3, 4, 5, 6, 7,
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8, 9,10,11,12,13,14,15,
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16, 0, 1, 2, 3, 4, 5, 6,
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7, 8, 9,10,11,12,13,14,
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};
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/* modulo 9 table */
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const uint8_t rclb_table[32] = {
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0, 1, 2, 3, 4, 5, 6, 7,
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8, 0, 1, 2, 3, 4, 5, 6,
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7, 8, 0, 1, 2, 3, 4, 5,
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6, 7, 8, 0, 1, 2, 3, 4,
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};
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/* n must be a constant to be efficient */
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static inline int lshift(int x, int n)
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{
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@ -624,33 +573,6 @@ void OPPROTO op_cmpxchg8b(void)
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helper_cmpxchg8b();
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}
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#if defined(__powerpc__)
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/* on PowerPC we patch the jump instruction directly */
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#define JUMP_TB(tbparam, n, eip)\
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do {\
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static void __attribute__((unused)) *__op_label ## n = &&label ## n;\
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asm volatile ("b %0" : : "i" (&__op_jmp ## n));\
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label ## n:\
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T0 = (long)(tbparam) + (n);\
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EIP = eip;\
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} while (0)
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#else
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/* jump to next block operations (more portable code, does not need
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cache flushing, but slower because of indirect jump) */
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#define JUMP_TB(tbparam, n, eip)\
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do {\
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static void __attribute__((unused)) *__op_label ## n = &&label ## n;\
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goto *(void *)(((TranslationBlock *)tbparam)->tb_next[n]);\
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label ## n:\
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T0 = (long)(tbparam) + (n);\
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EIP = eip;\
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} while (0)
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#endif
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void OPPROTO op_jmp_tb_next(void)
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{
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JUMP_TB(PARAM1, 0, PARAM2);
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@ -1561,6 +1483,8 @@ void OPPROTO op_fist_ST0_A0(void)
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d = ST0;
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val = lrint(d);
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if (val != (int16_t)val)
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val = -32768;
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stw((void *)A0, val);
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}
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