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target-s390: Convert LOAD ZERO 

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2012-09-05 10:14:24 -07:00
parent 16d7b2a43b
commit 24db8412ec
4 changed files with 18 additions and 40 deletions
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22
target-s390x/fpu_helper.c
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@ -494,28 +494,6 @@ uint32_t HELPER(cfxbr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
return set_cc_nz_f128(v2.q); return set_cc_nz_f128(v2.q);
} }
/* load 32-bit FP zero */
void HELPER(lzer)(CPUS390XState *env, uint32_t f1)
{
env->fregs[f1].l.upper = float32_zero;
}
/* load 64-bit FP zero */
void HELPER(lzdr)(CPUS390XState *env, uint32_t f1)
{
env->fregs[f1].d = float64_zero;
}
/* load 128-bit FP zero */
void HELPER(lzxr)(CPUS390XState *env, uint32_t f1)
{
CPU_QuadU x;
x.q = float64_to_float128(float64_zero, &env->fpu_status);
env->fregs[f1].ll = x.ll.upper;
env->fregs[f1 + 1].ll = x.ll.lower;
}
/* 32-bit FP multiply and add */ /* 32-bit FP multiply and add */
uint64_t HELPER(maeb)(CPUS390XState *env, uint64_t f1, uint64_t HELPER(maeb)(CPUS390XState *env, uint64_t f1,
uint64_t f2, uint64_t f3) uint64_t f2, uint64_t f3)

3
target-s390x/helper.h
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@ -62,9 +62,6 @@ DEF_HELPER_FLAGS_5(cxb, TCG_CALL_NO_WG_SE, i32, env, i64, i64, i64, i64)
DEF_HELPER_4(cgebr, i32, env, i32, i32, i32) DEF_HELPER_4(cgebr, i32, env, i32, i32, i32)
DEF_HELPER_4(cgdbr, i32, env, i32, i32, i32) DEF_HELPER_4(cgdbr, i32, env, i32, i32, i32)
DEF_HELPER_4(cgxbr, i32, env, i32, i32, i32) DEF_HELPER_4(cgxbr, i32, env, i32, i32, i32)
DEF_HELPER_2(lzer, void, env, i32)
DEF_HELPER_2(lzdr, void, env, i32)
DEF_HELPER_2(lzxr, void, env, i32)
DEF_HELPER_4(cfebr, i32, env, i32, i32, i32) DEF_HELPER_4(cfebr, i32, env, i32, i32, i32)
DEF_HELPER_4(cfdbr, i32, env, i32, i32, i32) DEF_HELPER_4(cfdbr, i32, env, i32, i32, i32)
DEF_HELPER_4(cfxbr, i32, env, i32, i32, i32) DEF_HELPER_4(cfxbr, i32, env, i32, i32, i32)

4
target-s390x/insn-data.def
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@ -329,6 +329,10 @@
C(0xe31f, LRVH, RXY_a, Z, 0, m2_16u, new, r1_16, rev16, 0) C(0xe31f, LRVH, RXY_a, Z, 0, m2_16u, new, r1_16, rev16, 0)
C(0xe31e, LRV, RXY_a, Z, 0, m2_32u, new, r1_32, rev32, 0) C(0xe31e, LRV, RXY_a, Z, 0, m2_32u, new, r1_32, rev32, 0)
C(0xe30f, LRVG, RXY_a, Z, 0, m2_64, r1, 0, rev64, 0) C(0xe30f, LRVG, RXY_a, Z, 0, m2_64, r1, 0, rev64, 0)
/* LOAD ZERO */
C(0xb374, LZER, RRE, Z, 0, 0, 0, e1, zero, 0)
C(0xb375, LZDR, RRE, Z, 0, 0, 0, f1, zero, 0)
C(0xb376, LZXR, RRE, Z, 0, 0, 0, x1, zero2, 0)
/* LOAD LENGTHENED */ /* LOAD LENGTHENED */
C(0xb304, LDEBR, RRE, Z, 0, e2, f1, 0, ldeb, 0) C(0xb304, LDEBR, RRE, Z, 0, e2, f1, 0, ldeb, 0)

29
target-s390x/translate.c
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@ -1385,21 +1385,6 @@ static void disas_b3(CPUS390XState *env, DisasContext *s, int op, int m3,
tcg_temp_free_i32(tmp32_2); tcg_temp_free_i32(tmp32_2);
switch (op) { switch (op) {
case 0x74: /* LZER R1 [RRE] */
tmp32_1 = tcg_const_i32(r1);
gen_helper_lzer(cpu_env, tmp32_1);
tcg_temp_free_i32(tmp32_1);
break;
case 0x75: /* LZDR R1 [RRE] */
tmp32_1 = tcg_const_i32(r1);
gen_helper_lzdr(cpu_env, tmp32_1);
tcg_temp_free_i32(tmp32_1);
break;
case 0x76: /* LZXR R1 [RRE] */
tmp32_1 = tcg_const_i32(r1);
gen_helper_lzxr(cpu_env, tmp32_1);
tcg_temp_free_i32(tmp32_1);
break;
case 0x84: /* SFPC R1 [RRE] */ case 0x84: /* SFPC R1 [RRE] */
tmp32_1 = load_reg32(r1); tmp32_1 = load_reg32(r1);
tcg_gen_st_i32(tmp32_1, cpu_env, offsetof(CPUS390XState, fpc)); tcg_gen_st_i32(tmp32_1, cpu_env, offsetof(CPUS390XState, fpc));
@ -3310,6 +3295,20 @@ static ExitStatus op_xori(DisasContext *s, DisasOps *o)
return NO_EXIT; return NO_EXIT;
} }
static ExitStatus op_zero(DisasContext *s, DisasOps *o)
{
o->out = tcg_const_i64(0);
return NO_EXIT;
}
static ExitStatus op_zero2(DisasContext *s, DisasOps *o)
{
o->out = tcg_const_i64(0);
o->out2 = o->out;
o->g_out2 = true;
return NO_EXIT;
}
/* ====================================================================== */ /* ====================================================================== */
/* The "Cc OUTput" generators. Given the generated output (and in some cases /* The "Cc OUTput" generators. Given the generated output (and in some cases
the original inputs), update the various cc data structures in order to the original inputs), update the various cc data structures in order to