diff options
Diffstat (limited to 'target-arm/arm-semi.c')
| -rw-r--r-- | target-arm/arm-semi.c | 47 |
1 files changed, 26 insertions, 21 deletions
diff --git a/target-arm/arm-semi.c b/target-arm/arm-semi.c index 8be0645eb0..d50726f65d 100644 --- a/target-arm/arm-semi.c +++ b/target-arm/arm-semi.c @@ -564,8 +564,10 @@ target_ulong do_arm_semihosting(CPUARMState *env) } case TARGET_SYS_HEAPINFO: { - uint32_t *ptr; + target_ulong retvals[4]; uint32_t limit; + int i; + GET_ARG(0); #ifdef CONFIG_USER_ONLY @@ -587,30 +589,33 @@ target_ulong do_arm_semihosting(CPUARMState *env) ts->heap_limit = limit; } - ptr = lock_user(VERIFY_WRITE, arg0, 16, 0); - if (!ptr) { - /* FIXME - should this error code be -TARGET_EFAULT ? */ - return (uint32_t)-1; - } - ptr[0] = tswap32(ts->heap_base); - ptr[1] = tswap32(ts->heap_limit); - ptr[2] = tswap32(ts->stack_base); - ptr[3] = tswap32(0); /* Stack limit. */ - unlock_user(ptr, arg0, 16); + retvals[0] = ts->heap_base; + retvals[1] = ts->heap_limit; + retvals[2] = ts->stack_base; + retvals[3] = 0; /* Stack limit. */ #else limit = ram_size; - ptr = lock_user(VERIFY_WRITE, arg0, 16, 0); - if (!ptr) { - /* FIXME - should this error code be -TARGET_EFAULT ? */ - return (uint32_t)-1; - } /* TODO: Make this use the limit of the loaded application. */ - ptr[0] = tswap32(limit / 2); - ptr[1] = tswap32(limit); - ptr[2] = tswap32(limit); /* Stack base */ - ptr[3] = tswap32(0); /* Stack limit. */ - unlock_user(ptr, arg0, 16); + retvals[0] = limit / 2; + retvals[1] = limit; + retvals[2] = limit; /* Stack base */ + retvals[3] = 0; /* Stack limit. */ #endif + + for (i = 0; i < ARRAY_SIZE(retvals); i++) { + bool fail; + + if (is_a64(env)) { + fail = put_user_u64(retvals[i], arg0 + i * 8); + } else { + fail = put_user_u32(retvals[i], arg0 + i * 4); + } + + if (fail) { + /* Couldn't write back to argument block */ + return -1; + } + } return 0; } case TARGET_SYS_EXIT: |