2019-09-19 15:18:41 +02:00
|
|
|
/*
|
|
|
|
* linux-user semihosting checks
|
|
|
|
*
|
|
|
|
* Copyright (c) 2019
|
|
|
|
* Written by Alex Bennée <alex.bennee@linaro.org>
|
|
|
|
*
|
|
|
|
* SPDX-License-Identifier: GPL-3.0-or-later
|
|
|
|
*/
|
|
|
|
|
2021-03-23 17:52:51 +01:00
|
|
|
#define SYS_WRITE0 0x04
|
2021-03-23 17:52:55 +01:00
|
|
|
#define SYS_HEAPINFO 0x16
|
2021-03-23 17:52:51 +01:00
|
|
|
#define SYS_REPORTEXC 0x18
|
|
|
|
|
2019-09-19 15:18:41 +02:00
|
|
|
#include <stdint.h>
|
2021-03-23 17:52:55 +01:00
|
|
|
#include <stdlib.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <string.h>
|
2020-01-08 13:24:38 +01:00
|
|
|
#include "semicall.h"
|
2019-09-19 15:18:41 +02:00
|
|
|
|
|
|
|
int main(int argc, char *argv[argc])
|
|
|
|
{
|
2021-03-23 17:52:51 +01:00
|
|
|
#if UINTPTR_MAX == UINT32_MAX
|
2019-09-19 15:18:41 +02:00
|
|
|
uintptr_t exit_code = 0x20026;
|
|
|
|
#else
|
|
|
|
uintptr_t exit_block[2] = {0x20026, 0};
|
|
|
|
uintptr_t exit_code = (uintptr_t) &exit_block;
|
|
|
|
#endif
|
2021-03-23 17:52:55 +01:00
|
|
|
struct {
|
|
|
|
void *heap_base;
|
|
|
|
void *heap_limit;
|
|
|
|
void *stack_base;
|
|
|
|
void *stack_limit;
|
|
|
|
} info;
|
|
|
|
void *ptr_to_info = (void *) &info;
|
2019-09-19 15:18:41 +02:00
|
|
|
|
2021-03-23 17:52:55 +01:00
|
|
|
__semi_call(SYS_WRITE0, (uintptr_t) "Checking HeapInfo\n");
|
|
|
|
|
|
|
|
memset(&info, 0, sizeof(info));
|
|
|
|
__semi_call(SYS_HEAPINFO, (uintptr_t) &ptr_to_info);
|
|
|
|
|
|
|
|
if (info.heap_base == NULL || info.heap_limit == NULL) {
|
|
|
|
printf("null heap: %p -> %p\n", info.heap_base, info.heap_limit);
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Error if heap base is above limit */
|
|
|
|
if ((uintptr_t) info.heap_base >= (uintptr_t) info.heap_limit) {
|
|
|
|
printf("heap base %p >= heap_limit %p\n",
|
|
|
|
info.heap_base, info.heap_limit);
|
|
|
|
exit(2);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (info.stack_base == NULL || info.stack_limit) {
|
|
|
|
printf("null stack: %p -> %p\n", info.stack_base, info.stack_limit);
|
|
|
|
exit(3);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* check our local variables are indeed inside the reported stack */
|
|
|
|
if (ptr_to_info > info.stack_base) {
|
|
|
|
printf("info appears to be above stack: %p > %p\n", ptr_to_info,
|
|
|
|
info.stack_base);
|
|
|
|
exit(4);
|
|
|
|
} else if (ptr_to_info < info.stack_limit) {
|
|
|
|
printf("info appears to be outside stack: %p < %p\n", ptr_to_info,
|
|
|
|
info.stack_limit);
|
|
|
|
exit(5);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ptr_to_info > info.heap_base && ptr_to_info < info.heap_limit) {
|
|
|
|
printf("info appears to be inside the heap: %p in %p:%p\n",
|
|
|
|
ptr_to_info, info.heap_base, info.heap_limit);
|
|
|
|
exit(6);
|
|
|
|
}
|
|
|
|
|
|
|
|
printf("heap: %p -> %p\n", info.heap_base, info.heap_limit);
|
|
|
|
printf("stack: %p -> %p\n", info.stack_base, info.stack_limit);
|
|
|
|
|
|
|
|
__semi_call(SYS_WRITE0, (uintptr_t) "Passed HeapInfo checks");
|
2019-09-19 15:18:41 +02:00
|
|
|
__semi_call(SYS_REPORTEXC, exit_code);
|
|
|
|
/* if we get here we failed */
|
|
|
|
return -1;
|
|
|
|
}
|