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target/s390x: implement COMPARE LOGICAL LONG UNICODE

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For that we need to make program_interrupt available to qemu-user.
Fortunately there is almost nothing to change as both kvm_enabled and
CONFIG_KVM evaluate to false in that case.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <20170531220129.27724-22-aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Aurelien Jarno 2017-06-01 00:01:20 +02:00 committed by Richard Henderson
parent d332712134
commit 31006af3bb
5 changed files with 90 additions and 15 deletions
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1
target/s390x/helper.h
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@ -24,6 +24,7 @@ DEF_HELPER_FLAGS_4(stam, TCG_CALL_NO_WG, void, env, i32, i64, i32)
DEF_HELPER_FLAGS_4(lam, TCG_CALL_NO_WG, void, env, i32, i64, i32)
DEF_HELPER_4(mvcle, i32, env, i32, i64, i32)
DEF_HELPER_4(clcle, i32, env, i32, i64, i32)
DEF_HELPER_4(clclu, i32, env, i32, i64, i32)
DEF_HELPER_3(cegb, i64, env, s64, i32)
DEF_HELPER_3(cdgb, i64, env, s64, i32)
DEF_HELPER_3(cxgb, i64, env, s64, i32)

2
target/s390x/insn-data.def
View File

@ -220,6 +220,8 @@
C(0x0f00, CLCL, RR_a, Z, 0, 0, 0, 0, clcl, 0)
/* COMPARE LOGICAL LONG EXTENDED */
C(0xa900, CLCLE, RS_a, Z, 0, a2, 0, 0, clcle, 0)
/* COMPARE LOGICAL LONG UNICODE */
C(0xeb8f, CLCLU, RSY_a, E2, 0, a2, 0, 0, clclu, 0)
/* COMPARE LOGICAL CHARACTERS UNDER MASK */
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)

76
target/s390x/mem_helper.c
View File

@ -67,6 +67,32 @@ static inline uint32_t adj_len_to_page(uint32_t len, uint64_t addr)
return len;
}
/* Trigger a SPECIFICATION exception if an address or a length is not
naturally aligned. */
static inline void check_alignment(CPUS390XState *env, uint64_t v,
int wordsize, uintptr_t ra)
{
if (v % wordsize) {
CPUState *cs = CPU(s390_env_get_cpu(env));
cpu_restore_state(cs, ra);
program_interrupt(env, PGM_SPECIFICATION, 6);
}
}
/* Load a value from memory according to its size. */
static inline uint64_t cpu_ldusize_data_ra(CPUS390XState *env, uint64_t addr,
int wordsize, uintptr_t ra)
{
switch (wordsize) {
case 1:
return cpu_ldub_data_ra(env, addr, ra);
case 2:
return cpu_lduw_data_ra(env, addr, ra);
default:
abort();
}
}
static void fast_memset(CPUS390XState *env, uint64_t dest, uint8_t byte,
uint32_t l, uintptr_t ra)
{
@ -655,12 +681,14 @@ uint32_t HELPER(mvcle)(CPUS390XState *env, uint32_t r1, uint64_t a2,
static inline uint32_t do_clcl(CPUS390XState *env,
uint64_t *src1, uint64_t *src1len,
uint64_t *src3, uint64_t *src3len,
uint8_t pad, uint64_t limit,
uintptr_t ra)
uint16_t pad, uint64_t limit,
int wordsize, uintptr_t ra)
{
uint64_t len = MAX(*src1len, *src3len);
uint32_t cc = 0;
check_alignment(env, *src1len | *src3len, wordsize, ra);
if (!len) {
return cc;
}
@ -672,15 +700,15 @@ static inline uint32_t do_clcl(CPUS390XState *env,
cc = 3;
}
for (; len; len--) {
uint8_t v1 = pad;
uint8_t v3 = pad;
for (; len; len -= wordsize) {
uint16_t v1 = pad;
uint16_t v3 = pad;
if (*src1len) {
v1 = cpu_ldub_data_ra(env, *src1, ra);
v1 = cpu_ldusize_data_ra(env, *src1, wordsize, ra);
}
if (*src3len) {
v3 = cpu_ldub_data_ra(env, *src3, ra);
v3 = cpu_ldusize_data_ra(env, *src3, wordsize, ra);
}
if (v1 != v3) {
@ -689,12 +717,12 @@ static inline uint32_t do_clcl(CPUS390XState *env,
}
if (*src1len) {
*src1 += 1;
*src1len -= 1;
*src1 += wordsize;
*src1len -= wordsize;
}
if (*src3len) {
*src3 += 1;
*src3len -= 1;
*src3 += wordsize;
*src3len -= wordsize;
}
}
@ -713,7 +741,7 @@ uint32_t HELPER(clcl)(CPUS390XState *env, uint32_t r1, uint32_t r2)
uint8_t pad = env->regs[r2 + 1] >> 24;
uint32_t cc;
cc = do_clcl(env, &src1, &src1len, &src3, &src3len, pad, -1, ra);
cc = do_clcl(env, &src1, &src1len, &src3, &src3len, pad, -1, 1, ra);
env->regs[r1 + 1] = deposit64(env->regs[r1 + 1], 0, 24, src1len);
env->regs[r2 + 1] = deposit64(env->regs[r2 + 1], 0, 24, src3len);
@ -735,7 +763,29 @@ uint32_t HELPER(clcle)(CPUS390XState *env, uint32_t r1, uint64_t a2,
uint8_t pad = a2;
uint32_t cc;
cc = do_clcl(env, &src1, &src1len, &src3, &src3len, pad, 0x2000, ra);
cc = do_clcl(env, &src1, &src1len, &src3, &src3len, pad, 0x2000, 1, ra);
set_length(env, r1 + 1, src1len);
set_length(env, r3 + 1, src3len);
set_address(env, r1, src1);
set_address(env, r3, src3);
return cc;
}
/* compare logical long unicode memcompare insn with padding */
uint32_t HELPER(clclu)(CPUS390XState *env, uint32_t r1, uint64_t a2,
uint32_t r3)
{
uintptr_t ra = GETPC();
uint64_t src1len = get_length(env, r1 + 1);
uint64_t src1 = get_address(env, r1);
uint64_t src3len = get_length(env, r3 + 1);
uint64_t src3 = get_address(env, r3);
uint16_t pad = a2;
uint32_t cc = 0;
cc = do_clcl(env, &src1, &src1len, &src3, &src3len, pad, 0x1000, 2, ra);
set_length(env, r1 + 1, src1len);
set_length(env, r3 + 1, src3len);

4
target/s390x/misc_helper.c
View File

@ -80,8 +80,6 @@ void HELPER(exception)(CPUS390XState *env, uint32_t excp)
cpu_loop_exit(cs);
}
#ifndef CONFIG_USER_ONLY
void program_interrupt(CPUS390XState *env, uint32_t code, int ilen)
{
S390CPU *cpu = s390_env_get_cpu(env);
@ -108,6 +106,8 @@ void program_interrupt(CPUS390XState *env, uint32_t code, int ilen)
}
}
#ifndef CONFIG_USER_ONLY
/* SCLP service call */
uint32_t HELPER(servc)(CPUS390XState *env, uint64_t r1, uint64_t r2)
{

22
target/s390x/translate.c
View File

@ -1205,6 +1205,7 @@ typedef enum DisasFacility {
FAC_ILA, /* interlocked access facility 1 */
FAC_LPP, /* load-program-parameter */
FAC_DAT_ENH, /* DAT-enhancement */
FAC_E2, /* extended-translation facility 2 */
} DisasFacility;
struct DisasInsn {
@ -1962,6 +1963,27 @@ static ExitStatus op_clcle(DisasContext *s, DisasOps *o)
return NO_EXIT;
}
static ExitStatus op_clclu(DisasContext *s, DisasOps *o)
{
int r1 = get_field(s->fields, r1);
int r3 = get_field(s->fields, r3);
TCGv_i32 t1, t3;
/* r1 and r3 must be even. */
if (r1 & 1 || r3 & 1) {
gen_program_exception(s, PGM_SPECIFICATION);
return EXIT_NORETURN;
}
t1 = tcg_const_i32(r1);
t3 = tcg_const_i32(r3);
gen_helper_clclu(cc_op, cpu_env, t1, o->in2, t3);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t3);
set_cc_static(s);
return NO_EXIT;
}
static ExitStatus op_clm(DisasContext *s, DisasOps *o)
{
TCGv_i32 m3 = tcg_const_i32(get_field(s->fields, m3));