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Convert udiv and sdiv ops to TCG 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4088 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2008-03-18 18:10:42 +00:00
parent 2483386a6e
commit 3b89f26c11
4 changed files with 58 additions and 49 deletions
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2
target-sparc/helper.h
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@ -36,6 +36,8 @@ void TCG_HELPER_PROTO helper_trapcc(target_ulong nb_trap,
target_ulong do_trap);
void TCG_HELPER_PROTO helper_debug(void);
void TCG_HELPER_PROTO helper_flush(target_ulong addr);
target_ulong TCG_HELPER_PROTO helper_udiv(target_ulong a, target_ulong b);
target_ulong TCG_HELPER_PROTO helper_sdiv(target_ulong a, target_ulong b);
uint64_t TCG_HELPER_PROTO helper_pack64(target_ulong high, target_ulong low);
uint64_t TCG_HELPER_PROTO helper_ld_asi(target_ulong addr, int asi,
int size, int sign);

48
target-sparc/op.c
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@ -169,54 +169,6 @@
#include "fop_template.h"
#endif
#define FLAG_SET(x) ((env->psr&x)?1:0)
void OPPROTO op_udiv_T1_T0(void)
{
uint64_t x0;
uint32_t x1;
x0 = T0 | ((uint64_t) (env->y) << 32);
x1 = T1;
if (x1 == 0) {
raise_exception(TT_DIV_ZERO);
}
x0 = x0 / x1;
if (x0 > 0xffffffff) {
T0 = 0xffffffff;
T1 = 1;
} else {
T0 = x0;
T1 = 0;
}
FORCE_RET();
}
void OPPROTO op_sdiv_T1_T0(void)
{
int64_t x0;
int32_t x1;
x0 = T0 | ((int64_t) (env->y) << 32);
x1 = T1;
if (x1 == 0) {
raise_exception(TT_DIV_ZERO);
}
x0 = x0 / x1;
if ((int32_t) x0 != x0) {
T0 = x0 < 0? 0x80000000: 0x7fffffff;
T1 = 1;
} else {
T0 = x0;
T1 = 0;
}
FORCE_RET();
}
/* Load and store */
#define MEMSUFFIX _raw
#include "op_mem.h"

44
target-sparc/op_helper.c
View File

@ -1582,6 +1582,50 @@ void helper_rett(void)
}
#endif
target_ulong helper_udiv(target_ulong a, target_ulong b)
{
uint64_t x0;
uint32_t x1;
x0 = a | ((uint64_t) (env->y) << 32);
x1 = b;
if (x1 == 0) {
raise_exception(TT_DIV_ZERO);
}
x0 = x0 / x1;
if (x0 > 0xffffffff) {
env->cc_src2 = 1;
return 0xffffffff;
} else {
env->cc_src2 = 0;
return x0;
}
}
target_ulong helper_sdiv(target_ulong a, target_ulong b)
{
int64_t x0;
int32_t x1;
x0 = a | ((int64_t) (env->y) << 32);
x1 = b;
if (x1 == 0) {
raise_exception(TT_DIV_ZERO);
}
x0 = x0 / x1;
if ((int32_t) x0 != x0) {
env->cc_src2 = 1;
return x0 < 0? 0x80000000: 0x7fffffff;
} else {
env->cc_src2 = 0;
return x0;
}
}
uint64_t helper_pack64(target_ulong high, target_ulong low)
{
return ((uint64_t)high << 32) | (uint64_t)(low & 0xffffffff);

13
target-sparc/translate.c
View File

@ -807,6 +807,16 @@ static inline void gen_op_smul_T1_T0(void)
tcg_gen_discard_i64(r_temp2);
}
static inline void gen_op_udiv_T1_T0(void)
{
tcg_gen_helper_1_2(helper_udiv, cpu_T[0], cpu_T[0], cpu_T[1]);
}
static inline void gen_op_sdiv_T1_T0(void)
{
tcg_gen_helper_1_2(helper_sdiv, cpu_T[0], cpu_T[0], cpu_T[1]);
}
#ifdef TARGET_SPARC64
static inline void gen_trap_ifdivzero_i64(TCGv divisor)
{
@ -842,7 +852,8 @@ static inline void gen_op_div_cc(void)
gen_cc_clear();
gen_cc_NZ(cpu_T[0]);
l1 = gen_new_label();
tcg_gen_brcond_i32(TCG_COND_EQ, cpu_T[1], tcg_const_i32(0), l1);
tcg_gen_ld_tl(cpu_tmp0, cpu_env, offsetof(CPUSPARCState, cc_src2));
tcg_gen_brcond_tl(TCG_COND_EQ, cpu_tmp0, tcg_const_tl(0), l1);
tcg_gen_ori_i32(cpu_psr, cpu_psr, PSR_OVF);
gen_set_label(l1);
}