OpenE2K/qemu-e2k
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e2k: stmqp v6 unaligned access

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This commit is contained in:
Denis Drakhnia 2024-02-09 09:30:30 +02:00
parent 8f38e52564
commit b77953a395
6 changed files with 90 additions and 54 deletions
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3
linux-user/e2k/cpu_loop.c
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@ -164,6 +164,9 @@ void cpu_loop(CPUE2KState *env)
case E2K_EXCP_DATA_PAGE:
gen_signal(env, TARGET_SIGSEGV, TARGET_SEGV_MAPERR, env->ip);
break;
case E2K_EXCP_ADDR_NOT_ALIGNED:
gen_signal(env, TARGET_SIGBUS, TARGET_BUS_ADRALN, env->ip);
break;
case E2K_EXCP_DIV:
gen_signal(env, TARGET_SIGFPE, 0, env->ip);
break;

3
target/e2k/helper-tcg.h
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@ -39,6 +39,9 @@ void G_NORETURN raise_exception(CPUE2KState *desc, int exception_index);
void G_NORETURN raise_exception_ra(CPUE2KState *desc, int exception_index,
uintptr_t retaddr);
/* helper_sm.c */
bool e2k_probe_rw_access(CPUE2KState *env, target_ulong addr, int size);
static inline uint64_t env_wd_get(CPUE2KState *env)
{
E2KWdState *wd = &env->wd;

5
target/e2k/helper.h
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@ -11,7 +11,6 @@ DEF_HELPER_4(setwd, void, env, int, int, int)
DEF_HELPER_FLAGS_3(probe_read_access, TCG_CALL_NO_RWG_SE, int, env, tl, int)
DEF_HELPER_FLAGS_3(probe_write_access, TCG_CALL_NO_RWG_SE, int, env, tl, int)
DEF_HELPER_FLAGS_3(probe_rw_access, TCG_CALL_NO_RWG_SE, int, env, tl, int)
DEF_HELPER_FLAGS_2(aau_load_program, TCG_CALL_NO_RWG, void, env, i64)
DEF_HELPER_FLAGS_6(mova_ptr, TCG_CALL_NO_RWG, tl, env, int, int, int, int, int)
@ -346,7 +345,9 @@ DEF_HELPER_FLAGS_2(fxtoidtr, TCG_CALL_NO_RWG, i64, env, f80)
DEF_HELPER_FLAGS_3(fstoifs, TCG_CALL_NO_RWG, i32, env, i32, i32)
DEF_HELPER_FLAGS_3(fdtoifd, TCG_CALL_NO_RWG, i64, env, i64, i64)
DEF_HELPER_FLAGS_1(stmqp_mask, TCG_CALL_NO_RWG_SE, vec, i32)
DEF_HELPER_FLAGS_5(stmqp5, TCG_CALL_NO_RWG, void, env, tl, vec, i32, i32)
DEF_HELPER_FLAGS_5(stmqp6, TCG_CALL_NO_RWG, void, env, tl, vec, i32, i32)
DEF_HELPER_FLAGS_6(stmqp_mlock, TCG_CALL_NO_RWG, i32, env, tl, vec, i32, i32, vec)
#undef f80
#undef vec

11
target/e2k/helper_sm.c
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@ -1,6 +1,7 @@
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "cpu.h"
#include "helper-tcg.h"
#include "exec/exec-all.h"
#include "qemu/host-utils.h"
#include "exec/helper-proto.h"
@ -39,6 +40,11 @@ static bool e2k_probe_access(CPUE2KState *env, target_ulong addr, int size, int
}
}
bool e2k_probe_rw_access(CPUE2KState *env, target_ulong addr, int size)
{
return e2k_probe_access(env, addr, size, PAGE_READ | PAGE_WRITE_ORG);
}
int HELPER(probe_read_access)(CPUE2KState *env, target_ulong addr, int size)
{
return e2k_probe_access(env, addr, size, PAGE_READ);
@ -48,9 +54,4 @@ int HELPER(probe_write_access)(CPUE2KState *env, target_ulong addr, int size)
{
return e2k_probe_access(env, addr, size, PAGE_WRITE_ORG);
}
int HELPER(probe_rw_access)(CPUE2KState *env, target_ulong addr, int size)
{
return e2k_probe_access(env, addr, size, PAGE_READ | PAGE_WRITE_ORG);
}
#endif /* CONFIG_USER_ONLY */

66
target/e2k/helper_vec.c
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@ -658,7 +658,69 @@ static inline Int128 mask16(uint16_t bitmask)
return int128_make128(mask8(bitmask), mask8(bitmask >> 8));
}
Int128 HELPER(stmqp_mask)(uint32_t bitmask)
static Int128 qmerge(Int128 a, Int128 b, uint32_t mask)
{
return mask16(bitmask);
Int128 m;
m = mask16(mask);
a = int128_and(a, m);
b = int128_and(b, int128_not(m));
return int128_or(a,b );
}
static void stmqp(CPUE2KState *env, target_ulong addr, Int128 value,
uint32_t mask, MemOp memop, bool sm)
{
Int128 t;
MemOpIdx oi = make_memop_idx(memop | MO_LE | MO_UO, e2k_env_mmu_index(env, false));
if (mask & 0xffff && (!sm || e2k_probe_rw_access(env, addr, 16))) {
t = cpu_ld16_mmu(env, addr, oi, GETPC());
t = qmerge(value, t, mask);
cpu_st16_mmu(env, addr, t, oi, GETPC());
}
}
void HELPER(stmqp5)(CPUE2KState *env, target_ulong addr, Int128 value,
uint32_t mask, uint32_t sm)
{
stmqp(env, addr, value, mask, MO_ALIGN, sm);
}
void HELPER(stmqp6)(CPUE2KState *env, target_ulong addr, Int128 value,
uint32_t mask, uint32_t sm)
{
target_ulong start, last;
start = addr & TARGET_PAGE_MASK;
last = (addr + 15) & TARGET_PAGE_MASK;
if (start != last) {
int align = addr & 15;
stmqp(env, addr - align, int128_lshift(value, align * 8), mask << align, MO_UNALN, sm);
align = 16 - align;
value = int128_rshift(value, align * 8);
addr += align;
mask = (mask & 0xffff) >> align;
}
stmqp(env, addr, value, mask, MO_UNALN, sm);
}
uint32_t HELPER(stmqp_mlock)(CPUE2KState *env, target_ulong addr, Int128 value,
uint32_t mask, uint32_t sm, Int128 last_val)
{
Int128 t;
MemOpIdx oi = make_memop_idx(MO_ALIGN | MO_LE | MO_UO, e2k_env_mmu_index(env, false));
if (mask & 0xffff && (!sm || e2k_probe_rw_access(env, addr, 16))) {
t = cpu_ld16_mmu(env, addr, oi, GETPC());
t = qmerge(value, t, mask);
t = cpu_atomic_cmpxchgo_le_mmu(env, addr, last_val, t, oi, GETPC());
return int128_ne(t, last_val);
} else {
return 0;
}
}

56
target/e2k/translate.c
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@ -3970,13 +3970,6 @@ static void gen_probe_write_access(TCGv_i32 ret, TCGv addr, int size,
gen_helper_probe_write_access(ret, tcg_env, addr, t0);
}
static void gen_probe_rw_access(TCGv_i32 ret, TCGv addr, int size,
int mmu_idx)
{
TCGv_i32 t0 = tcg_constant_i32(size);
gen_helper_probe_rw_access(ret, tcg_env, addr, t0);
}
static AlopResult gen_ld_raw_i64(Alop *alop, TCGv_i32 tag, TCGv addr,
MemOp memop, bool skip, bool save)
{
@ -4129,52 +4122,25 @@ IMPL_GEN_ST(gen_st_raw_i32, s, gen_atomic_cmpxchg_mlock_i32, tcg_gen_qemu_st_i
IMPL_GEN_ST(gen_st_raw_i64, d, gen_atomic_cmpxchg_mlock_i64, tcg_gen_qemu_st_i64)
IMPL_GEN_ST(gen_st_raw_i128, q, gen_atomic_cmpxchg_mlock_i128, tcg_gen_qemu_st_i128)
static void gen_stmqp_merge_i128(TCGv_i128 ret, TCGv_i128 a, TCGv_i128 b, TCGv_i32 mask)
{
TCGv_i128 m = tcg_temp_new_i128();
TCGv_i128 t0 = tcg_temp_new_i128();
TCGv_i128 t1 = tcg_temp_new_i128();
gen_helper_stmqp_mask(m, mask);
gen_qpand(t0, a, m);
gen_qpandn(t1, b, m);
gen_qpor(ret, t0, t1);
}
static void gen_stm_raw_i128(Alop *alop, TCGv addr,
MemOp memop, bool check)
{
TCGLabel *l0 = gen_new_label();
Tagged_i32 s2 = gen_tagged_src2_s(alop);
Tagged_i128 s4 = gen_tagged_src4_q(alop);
TCGv_i32 mask = tcg_temp_new_i32();
TCGv_i128 t0 = tcg_temp_new_i128();
// force alignment for v5 only
if (alop->ctx->version == 5) {
memop |= MO_ALIGN_16;
}
tcg_gen_andi_i32(mask, s2.val, 0xffff);
tcg_gen_brcondi_i32(TCG_COND_EQ, mask, 0, l0);
if (alop->als.sm) {
TCGv_i32 t5 = tcg_temp_new_i32();
gen_probe_rw_access(t5, addr, 16, alop->ctx->mmuidx);
tcg_gen_brcondi_i32(TCG_COND_EQ, t5, 0, l0);
}
tcg_gen_qemu_ld_i128(t0, addr, alop->ctx->mmuidx, memop);
gen_stmqp_merge_i128(t0, s4.val, t0, s2.val);
TCGv_i32 sm = tcg_constant_i32(alop->als.sm);
if (check && alop->ctx->mlock) {
gen_atomic_cmpxchg_mlock_i128(alop, t0, addr, memop);
} else {
tcg_gen_qemu_st_i128(t0, addr, alop->ctx->mmuidx, memop);
}
TCGv_i128 t0 = tcg_temp_new_i128();
gen_set_label(l0);
tcg_gen_concat_i64_i128(t0, cpu_last_val0, cpu_last_val1);
gen_helper_stmqp_mlock(alop->ctx->mlock, tcg_env, addr, s4.val, s2.val, sm, t0);
} else {
if (alop->ctx->version <= 5) {
gen_helper_stmqp5(tcg_env, addr, s4.val, s2.val, sm);
} else {
gen_helper_stmqp6(tcg_env, addr, s4.val, s2.val, sm);
}
}
}
typedef enum {