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target/arm: Use cpu_*_mmu instead of helper_*_mmu 

The helper_*_mmu functions were the only thing available
when this code was written.  This could have been adjusted
when we added cpu_*_mmuidx_ra, but now we can most easily
use the newest set of interfaces.

Cc: qemu-arm@nongnu.org
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-07-27 11:00:20 -10:00
parent a8f84958d0
commit 1a2eaf9e38
2 changed files with 11 additions and 47 deletions
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52
target/arm/helper-a64.c
View File

@ -512,37 +512,19 @@ uint64_t HELPER(paired_cmpxchg64_le)(CPUARMState *env, uint64_t addr,
uintptr_t ra = GETPC();
uint64_t o0, o1;
bool success;
#ifdef CONFIG_USER_ONLY
/* ??? Enforce alignment. */
uint64_t *haddr = g2h(env_cpu(env), addr);
set_helper_retaddr(ra);
o0 = ldq_le_p(haddr + 0);
o1 = ldq_le_p(haddr + 1);
oldv = int128_make128(o0, o1);
success = int128_eq(oldv, cmpv);
if (success) {
stq_le_p(haddr + 0, int128_getlo(newv));
stq_le_p(haddr + 1, int128_gethi(newv));
}
clear_helper_retaddr();
#else
int mem_idx = cpu_mmu_index(env, false);
MemOpIdx oi0 = make_memop_idx(MO_LEQ | MO_ALIGN_16, mem_idx);
MemOpIdx oi1 = make_memop_idx(MO_LEQ, mem_idx);
o0 = helper_le_ldq_mmu(env, addr + 0, oi0, ra);
o1 = helper_le_ldq_mmu(env, addr + 8, oi1, ra);
o0 = cpu_ldq_le_mmu(env, addr + 0, oi0, ra);
o1 = cpu_ldq_le_mmu(env, addr + 8, oi1, ra);
oldv = int128_make128(o0, o1);
success = int128_eq(oldv, cmpv);
if (success) {
helper_le_stq_mmu(env, addr + 0, int128_getlo(newv), oi1, ra);
helper_le_stq_mmu(env, addr + 8, int128_gethi(newv), oi1, ra);
cpu_stq_le_mmu(env, addr + 0, int128_getlo(newv), oi1, ra);
cpu_stq_le_mmu(env, addr + 8, int128_gethi(newv), oi1, ra);
}
#endif
return !success;
}
@ -582,37 +564,19 @@ uint64_t HELPER(paired_cmpxchg64_be)(CPUARMState *env, uint64_t addr,
uintptr_t ra = GETPC();
uint64_t o0, o1;
bool success;
#ifdef CONFIG_USER_ONLY
/* ??? Enforce alignment. */
uint64_t *haddr = g2h(env_cpu(env), addr);
set_helper_retaddr(ra);
o1 = ldq_be_p(haddr + 0);
o0 = ldq_be_p(haddr + 1);
oldv = int128_make128(o0, o1);
success = int128_eq(oldv, cmpv);
if (success) {
stq_be_p(haddr + 0, int128_gethi(newv));
stq_be_p(haddr + 1, int128_getlo(newv));
}
clear_helper_retaddr();
#else
int mem_idx = cpu_mmu_index(env, false);
MemOpIdx oi0 = make_memop_idx(MO_BEQ | MO_ALIGN_16, mem_idx);
MemOpIdx oi1 = make_memop_idx(MO_BEQ, mem_idx);
o1 = helper_be_ldq_mmu(env, addr + 0, oi0, ra);
o0 = helper_be_ldq_mmu(env, addr + 8, oi1, ra);
o1 = cpu_ldq_be_mmu(env, addr + 0, oi0, ra);
o0 = cpu_ldq_be_mmu(env, addr + 8, oi1, ra);
oldv = int128_make128(o0, o1);
success = int128_eq(oldv, cmpv);
if (success) {
helper_be_stq_mmu(env, addr + 0, int128_gethi(newv), oi1, ra);
helper_be_stq_mmu(env, addr + 8, int128_getlo(newv), oi1, ra);
cpu_stq_be_mmu(env, addr + 0, int128_gethi(newv), oi1, ra);
cpu_stq_be_mmu(env, addr + 8, int128_getlo(newv), oi1, ra);
}
#endif
return !success;
}

6
target/arm/m_helper.c
View File

@ -1947,9 +1947,9 @@ static bool do_v7m_function_return(ARMCPU *cpu)
* do them as secure, so work out what MMU index that is.
*/
mmu_idx = arm_v7m_mmu_idx_for_secstate(env, true);
oi = make_memop_idx(MO_LE, arm_to_core_mmu_idx(mmu_idx));
newpc = helper_le_ldul_mmu(env, frameptr, oi, 0);
newpsr = helper_le_ldul_mmu(env, frameptr + 4, oi, 0);
oi = make_memop_idx(MO_LEUL, arm_to_core_mmu_idx(mmu_idx));
newpc = cpu_ldl_le_mmu(env, frameptr, oi, 0);
newpsr = cpu_ldl_le_mmu(env, frameptr + 4, oi, 0);
/* Consistency checks on new IPSR */
newpsr_exc = newpsr & XPSR_EXCP;