From aa31bf60312157aefb09f887e2f750c7d59a8bbc Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Wed, 5 Sep 2012 10:20:53 -0700 Subject: target-s390: Convert CLST, MVST Signed-off-by: Richard Henderson --- target-s390x/helper.h | 4 +- target-s390x/insn-data.def | 4 ++ target-s390x/mem_helper.c | 119 ++++++++++++++++++++++----------------------- target-s390x/translate.c | 42 ++++++++-------- 4 files changed, 83 insertions(+), 86 deletions(-) diff --git a/target-s390x/helper.h b/target-s390x/helper.h index c6afcbc6b6..999d5d0604 100644 --- a/target-s390x/helper.h +++ b/target-s390x/helper.h @@ -14,9 +14,9 @@ DEF_HELPER_3(divu32, i64, env, i64, i64) DEF_HELPER_3(divs64, s64, env, s64, s64) DEF_HELPER_4(divu64, i64, env, i64, i64, i64) DEF_HELPER_4(srst, i32, env, i32, i32, i32) -DEF_HELPER_4(clst, i32, env, i32, i32, i32) +DEF_HELPER_4(clst, i64, env, i64, i64, i64) DEF_HELPER_4(mvpg, void, env, i64, i64, i64) -DEF_HELPER_4(mvst, void, env, i32, i32, i32) +DEF_HELPER_4(mvst, i64, env, i64, i64, i64) DEF_HELPER_4(csg, i64, env, i64, i64, i64) DEF_HELPER_4(cdsg, i32, env, i32, i64, i32) DEF_HELPER_4(cs, i64, env, i64, i64, i64) diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def index 4223d35efa..b485b85e9c 100644 --- a/target-s390x/insn-data.def +++ b/target-s390x/insn-data.def @@ -153,6 +153,8 @@ C(0xbd00, CLM, RS_b, Z, r1_o, a2, 0, 0, clm, 0) C(0xeb21, CLMY, RSY_b, LD, r1_o, a2, 0, 0, clm, 0) C(0xeb20, CLMH, RSY_b, Z, r1_sr32, a2, 0, 0, clm, 0) +/* COMPARE LOGICAL STRING */ + C(0xb25d, CLST, RRE, Z, r1_o, r2_o, 0, 0, clst, 0) /* COMPARE AND SWAP */ C(0xba00, CS, RS_a, Z, r1_o, a2, new, r1_32, cs, 0) @@ -396,6 +398,8 @@ C(0xa800, MVCLE, RS_a, Z, 0, a2, 0, 0, mvcle, 0) /* MOVE PAGE */ C(0xb254, MVPG, RRE, Z, r1_o, r2_o, 0, 0, mvpg, 0) +/* MOVE STRING */ + C(0xb255, MVST, RRE, Z, r1_o, r2_o, 0, 0, mvst, 0) /* MULTIPLY */ C(0x1c00, MR, RR_a, Z, r1p1_32s, r2_32s, new, r1_D32, mul, 0) diff --git a/target-s390x/mem_helper.c b/target-s390x/mem_helper.c index 61c35a2c38..7d87c746f6 100644 --- a/target-s390x/mem_helper.c +++ b/target-s390x/mem_helper.c @@ -304,36 +304,30 @@ uint32_t HELPER(clm)(CPUS390XState *env, uint32_t r1, uint32_t mask, return cc; } +static inline uint64_t fix_address(CPUS390XState *env, uint64_t a) +{ + /* 31-Bit mode */ + if (!(env->psw.mask & PSW_MASK_64)) { + a &= 0x7fffffff; + } + return a; +} + static inline uint64_t get_address(CPUS390XState *env, int x2, int b2, int d2) { uint64_t r = d2; - if (x2) { r += env->regs[x2]; } - if (b2) { r += env->regs[b2]; } - - /* 31-Bit mode */ - if (!(env->psw.mask & PSW_MASK_64)) { - r &= 0x7fffffff; - } - - return r; + return fix_address(env, r); } static inline uint64_t get_address_31fix(CPUS390XState *env, int reg) { - uint64_t r = env->regs[reg]; - - /* 31-Bit mode */ - if (!(env->psw.mask & PSW_MASK_64)) { - r &= 0x7fffffff; - } - - return r; + return fix_address(env, env->regs[reg]); } /* search string (c is byte to search, r2 is string, r1 end of string) */ @@ -359,39 +353,40 @@ uint32_t HELPER(srst)(CPUS390XState *env, uint32_t c, uint32_t r1, uint32_t r2) } /* unsigned string compare (c is string terminator) */ -uint32_t HELPER(clst)(CPUS390XState *env, uint32_t c, uint32_t r1, uint32_t r2) +uint64_t HELPER(clst)(CPUS390XState *env, uint64_t c, uint64_t s1, uint64_t s2) { - uint64_t s1 = get_address_31fix(env, r1); - uint64_t s2 = get_address_31fix(env, r2); - uint8_t v1, v2; - uint32_t cc; + uint32_t len; c = c & 0xff; -#ifdef CONFIG_USER_ONLY - if (!c) { - HELPER_LOG("%s: comparing '%s' and '%s'\n", - __func__, (char *)g2h(s1), (char *)g2h(s2)); - } -#endif - for (;;) { - v1 = cpu_ldub_data(env, s1); - v2 = cpu_ldub_data(env, s2); - if ((v1 == c || v2 == c) || (v1 != v2)) { - break; + s1 = fix_address(env, s1); + s2 = fix_address(env, s2); + + /* Lest we fail to service interrupts in a timely manner, limit the + amount of work we're willing to do. For now, lets cap at 8k. */ + for (len = 0; len < 0x2000; ++len) { + uint8_t v1 = cpu_ldub_data(env, s1 + len); + uint8_t v2 = cpu_ldub_data(env, s2 + len); + if (v1 == v2) { + if (v1 == c) { + /* Equal. CC=0, and don't advance the registers. */ + env->cc_op = 0; + env->retxl = s2; + return s1; + } + } else { + /* Unequal. CC={1,2}, and advance the registers. Note that + the terminator need not be zero, but the string that contains + the terminator is by definition "low". */ + env->cc_op = (v1 == c ? 1 : v2 == c ? 2 : v1 < v2 ? 1 : 2); + env->retxl = s2 + len; + return s1 + len; } - s1++; - s2++; } - if (v1 == v2) { - cc = 0; - } else { - cc = (v1 < v2) ? 1 : 2; - /* FIXME: 31-bit mode! */ - env->regs[r1] = s1; - env->regs[r2] = s2; - } - return cc; + /* CPU-determined bytes equal; advance the registers. */ + env->cc_op = 3; + env->retxl = s2 + len; + return s1 + len; } /* move page */ @@ -407,29 +402,31 @@ void HELPER(mvpg)(CPUS390XState *env, uint64_t r0, uint64_t r1, uint64_t r2) } /* string copy (c is string terminator) */ -void HELPER(mvst)(CPUS390XState *env, uint32_t c, uint32_t r1, uint32_t r2) +uint64_t HELPER(mvst)(CPUS390XState *env, uint64_t c, uint64_t d, uint64_t s) { - uint64_t dest = get_address_31fix(env, r1); - uint64_t src = get_address_31fix(env, r2); - uint8_t v; + uint32_t len; c = c & 0xff; -#ifdef CONFIG_USER_ONLY - if (!c) { - HELPER_LOG("%s: copy '%s' to 0x%lx\n", __func__, (char *)g2h(src), - dest); - } -#endif - for (;;) { - v = cpu_ldub_data(env, src); - cpu_stb_data(env, dest, v); + d = fix_address(env, d); + s = fix_address(env, s); + + /* Lest we fail to service interrupts in a timely manner, limit the + amount of work we're willing to do. For now, lets cap at 8k. */ + for (len = 0; len < 0x2000; ++len) { + uint8_t v = cpu_ldub_data(env, s + len); + cpu_stb_data(env, d + len, v); if (v == c) { - break; + /* Complete. Set CC=1 and advance R1. */ + env->cc_op = 1; + env->retxl = s; + return d + len; } - src++; - dest++; } - env->regs[r1] = dest; /* FIXME: 31-bit mode! */ + + /* Incomplete. Set CC=3 and signal to advance R1 and R2. */ + env->cc_op = 3; + env->retxl = s + len; + return d + len; } /* compare and swap 64-bit */ diff --git a/target-s390x/translate.c b/target-s390x/translate.c index d77b30f762..f1eb4bb8da 100644 --- a/target-s390x/translate.c +++ b/target-s390x/translate.c @@ -427,7 +427,7 @@ static TCGv_i64 get_address(DisasContext *s, int x2, int b2, int d2) return tmp; } -static void gen_op_movi_cc(DisasContext *s, uint32_t val) +static inline void gen_op_movi_cc(DisasContext *s, uint32_t val) { s->cc_op = CC_OP_CONST0 + val; } @@ -1034,28 +1034,6 @@ static void disas_b2(CPUS390XState *env, DisasContext *s, int op, LOG_DISAS("disas_b2: op 0x%x r1 %d r2 %d\n", op, r1, r2); switch (op) { - case 0x55: /* MVST R1,R2 [RRE] */ - tmp32_1 = load_reg32(0); - tmp32_2 = tcg_const_i32(r1); - tmp32_3 = tcg_const_i32(r2); - potential_page_fault(s); - gen_helper_mvst(cpu_env, tmp32_1, tmp32_2, tmp32_3); - tcg_temp_free_i32(tmp32_1); - tcg_temp_free_i32(tmp32_2); - tcg_temp_free_i32(tmp32_3); - gen_op_movi_cc(s, 1); - break; - case 0x5d: /* CLST R1,R2 [RRE] */ - tmp32_1 = load_reg32(0); - tmp32_2 = tcg_const_i32(r1); - tmp32_3 = tcg_const_i32(r2); - potential_page_fault(s); - gen_helper_clst(cc_op, cpu_env, tmp32_1, tmp32_2, tmp32_3); - set_cc_static(s); - tcg_temp_free_i32(tmp32_1); - tcg_temp_free_i32(tmp32_2); - tcg_temp_free_i32(tmp32_3); - break; case 0x5e: /* SRST R1,R2 [RRE] */ tmp32_1 = load_reg32(0); tmp32_2 = tcg_const_i32(r1); @@ -2091,6 +2069,15 @@ static ExitStatus op_clm(DisasContext *s, DisasOps *o) return NO_EXIT; } +static ExitStatus op_clst(DisasContext *s, DisasOps *o) +{ + potential_page_fault(s); + gen_helper_clst(o->in1, cpu_env, regs[0], o->in1, o->in2); + set_cc_static(s); + return_low128(o->in2); + return NO_EXIT; +} + static ExitStatus op_cs(DisasContext *s, DisasOps *o) { int r3 = get_field(s->fields, r3); @@ -2650,6 +2637,15 @@ static ExitStatus op_mvpg(DisasContext *s, DisasOps *o) return NO_EXIT; } +static ExitStatus op_mvst(DisasContext *s, DisasOps *o) +{ + potential_page_fault(s); + gen_helper_mvst(o->in1, cpu_env, regs[0], o->in1, o->in2); + set_cc_static(s); + return_low128(o->in2); + return NO_EXIT; +} + static ExitStatus op_mul(DisasContext *s, DisasOps *o) { tcg_gen_mul_i64(o->out, o->in1, o->in2); -- cgit v1.2.3