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 /linux-user | |
| 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 'linux-user')
| -rw-r--r-- | linux-user/main.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index bcb9f66570..fe2a8dd6db 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) { |