diff options
Diffstat (limited to 'linux-user/main.c')
| -rw-r--r-- | linux-user/main.c | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index 23ad357b50..191b75060d 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -33,6 +33,7 @@ #include "tcg.h" #include "qemu-timer.h" #include "envlist.h" +#include "elf.h" #define DEBUG_LOGFILE "/tmp/qemu.log" @@ -474,6 +475,22 @@ void cpu_loop(CPUX86State *env) #ifdef TARGET_ARM +#define get_user_code_u32(x, gaddr, doswap) \ + ({ abi_long __r = get_user_u32((x), (gaddr)); \ + if (!__r && (doswap)) { \ + (x) = bswap32(x); \ + } \ + __r; \ + }) + +#define get_user_code_u16(x, gaddr, doswap) \ + ({ abi_long __r = get_user_u16((x), (gaddr)); \ + if (!__r && (doswap)) { \ + (x) = bswap16(x); \ + } \ + __r; \ + }) + /* * See the Linux kernel's Documentation/arm/kernel_user_helpers.txt * Input: @@ -707,7 +724,7 @@ void cpu_loop(CPUARMState *env) /* we handle the FPU emulation here, as Linux */ /* we get the opcode */ /* FIXME - what to do if get_user() fails? */ - get_user_u32(opcode, env->regs[15]); + get_user_code_u32(opcode, env->regs[15], env->bswap_code); rc = EmulateAll(opcode, &ts->fpa, env); if (rc == 0) { /* illegal instruction */ @@ -777,23 +794,25 @@ void cpu_loop(CPUARMState *env) if (trapnr == EXCP_BKPT) { if (env->thumb) { /* FIXME - what to do if get_user() fails? */ - get_user_u16(insn, env->regs[15]); + get_user_code_u16(insn, env->regs[15], env->bswap_code); n = insn & 0xff; env->regs[15] += 2; } else { /* FIXME - what to do if get_user() fails? */ - get_user_u32(insn, env->regs[15]); + get_user_code_u32(insn, env->regs[15], env->bswap_code); n = (insn & 0xf) | ((insn >> 4) & 0xff0); env->regs[15] += 4; } } else { if (env->thumb) { /* FIXME - what to do if get_user() fails? */ - get_user_u16(insn, env->regs[15] - 2); + get_user_code_u16(insn, env->regs[15] - 2, + env->bswap_code); n = insn & 0xff; } else { /* FIXME - what to do if get_user() fails? */ - get_user_u32(insn, env->regs[15] - 4); + get_user_code_u32(insn, env->regs[15] - 4, + env->bswap_code); n = insn & 0xffffff; } } @@ -3657,6 +3676,11 @@ int main(int argc, char **argv, char **envp) for(i = 0; i < 16; i++) { env->regs[i] = regs->uregs[i]; } + /* Enable BE8. */ + if (EF_ARM_EABI_VERSION(info->elf_flags) >= EF_ARM_EABI_VER4 + && (info->elf_flags & EF_ARM_BE8)) { + env->bswap_code = 1; + } } #elif defined(TARGET_UNICORE32) { |