diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2016-03-04 11:30:19 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-03-04 11:30:19 +0000 |
| commit | f9fd40ebe4f55e0048e002925b8d65e66d56e7a7 (patch) | |
| tree | 17f72ea122a29d8d141271b7387e26e852bd5a77 /target-arm/helper.c | |
| parent | 49017bd8b4395ba380c45c2fc41f4353fc2f0f06 (diff) | |
target-arm: implement SCTLR.B, drop bswap_code
bswap_code is a CPU property of sorts ("is the iside endianness the
opposite way round to TARGET_WORDS_BIGENDIAN?") but it is not the
actual CPU state involved here which is SCTLR.B (set for BE32
binaries, clear for BE8).
Replace bswap_code with SCTLR.B, and pass that to arm_ld*_code.
The next patches will make data fetches honor both SCTLR.B and
CPSR.E appropriately.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[PC changes:
* rebased on master (Jan 2016)
* s/TARGET_USER_ONLY/CONFIG_USER_ONLY
* Use bswap_code() for disas_set_info() instead of raw sctlr_b
]
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-arm/helper.c')
| -rw-r--r-- | target-arm/helper.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index 935f13b7ed..0a0e85d5c0 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -5848,7 +5848,7 @@ void arm_v7m_cpu_do_interrupt(CPUState *cs) case EXCP_BKPT: if (semihosting_enabled()) { int nr; - nr = arm_lduw_code(env, env->regs[15], env->bswap_code) & 0xff; + nr = arm_lduw_code(env, env->regs[15], arm_sctlr_b(env)) & 0xff; if (nr == 0xab) { env->regs[15] += 2; qemu_log_mask(CPU_LOG_INT, @@ -6386,13 +6386,13 @@ static inline bool check_for_semihosting(CPUState *cs) case EXCP_SWI: /* Check for semihosting interrupt. */ if (env->thumb) { - imm = arm_lduw_code(env, env->regs[15] - 2, env->bswap_code) + imm = arm_lduw_code(env, env->regs[15] - 2, arm_sctlr_b(env)) & 0xff; if (imm == 0xab) { break; } } else { - imm = arm_ldl_code(env, env->regs[15] - 4, env->bswap_code) + imm = arm_ldl_code(env, env->regs[15] - 4, arm_sctlr_b(env)) & 0xffffff; if (imm == 0x123456) { break; @@ -6402,7 +6402,7 @@ static inline bool check_for_semihosting(CPUState *cs) case EXCP_BKPT: /* See if this is a semihosting syscall. */ if (env->thumb) { - imm = arm_lduw_code(env, env->regs[15], env->bswap_code) + imm = arm_lduw_code(env, env->regs[15], arm_sctlr_b(env)) & 0xff; if (imm == 0xab) { env->regs[15] += 2; |