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authorPaolo Bonzini <pbonzini@redhat.com>2016-03-04 11:30:19 +0000
committerPeter Maydell <peter.maydell@linaro.org>2016-03-04 11:30:19 +0000
commitf9fd40ebe4f55e0048e002925b8d65e66d56e7a7 (patch)
tree17f72ea122a29d8d141271b7387e26e852bd5a77 /linux-user
parent49017bd8b4395ba380c45c2fc41f4353fc2f0f06 (diff)
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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 'linux-user')
-rw-r--r--linux-user/main.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/linux-user/main.c b/linux-user/main.c
index bcb9f66..fe2a8dd 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -437,7 +437,7 @@ void cpu_loop(CPUX86State *env)
#define get_user_code_u32(x, gaddr, env) \
({ abi_long __r = get_user_u32((x), (gaddr)); \
- if (!__r && (env)->bswap_code) { \
+ if (!__r && bswap_code(arm_sctlr_b(env))) { \
(x) = bswap32(x); \
} \
__r; \
@@ -445,7 +445,7 @@ void cpu_loop(CPUX86State *env)
#define get_user_code_u16(x, gaddr, env) \
({ abi_long __r = get_user_u16((x), (gaddr)); \
- if (!__r && (env)->bswap_code) { \
+ if (!__r && bswap_code(arm_sctlr_b(env))) { \
(x) = bswap16(x); \
} \
__r; \
@@ -4449,11 +4449,15 @@ int main(int argc, char **argv, char **envp)
for(i = 0; i < 16; i++) {
env->regs[i] = regs->uregs[i];
}
+#ifdef TARGET_WORDS_BIGENDIAN
/* Enable BE8. */
if (EF_ARM_EABI_VERSION(info->elf_flags) >= EF_ARM_EABI_VER4
&& (info->elf_flags & EF_ARM_BE8)) {
- env->bswap_code = 1;
+ /* nothing for now, CPSR.E not emulated yet */
+ } else {
+ env->cp15.sctlr_el[1] |= SCTLR_B;
}
+#endif
}
#elif defined(TARGET_UNICORE32)
{