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Make memory access boundary check behavior configurable (#2289)

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Allow to use `cmake -DWAMR_CONFIGURABLE_BOUNDS_CHECKS=1` to
build iwasm, and then run `iwasm --disable-bounds-checks` to disable the
memory access boundary checks.

And add two APIs:
`wasm_runtime_set_bounds_checks` and `wasm_runtime_is_bounds_checks_enabled`
This commit is contained in:
Huang Qi
2023-07-04 16:21:30 +08:00
committed by GitHub
parent 44f4b4f062
commit 18092f86cc
13 changed files with 234 additions and 30 deletions
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27
core/iwasm/interpreter/wasm_interp_fast.c
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@ -35,7 +35,8 @@ typedef float64 CellType_F64;
#define CHECK_MEMORY_OVERFLOW(bytes) \
do { \
uint64 offset1 = (uint64)offset + (uint64)addr; \
if (offset1 + bytes <= (uint64)get_linear_mem_size()) \
if (disable_bounds_checks \
|| offset1 + bytes <= (uint64)get_linear_mem_size()) \
/* If offset1 is in valid range, maddr must also \
be in valid range, no need to check it again. */ \
maddr = memory->memory_data + offset1; \
@ -43,15 +44,15 @@ typedef float64 CellType_F64;
goto out_of_bounds; \
} while (0)
#define CHECK_BULK_MEMORY_OVERFLOW(start, bytes, maddr) \
do { \
uint64 offset1 = (uint32)(start); \
if (offset1 + bytes <= get_linear_mem_size()) \
/* App heap space is not valid space for \
bulk memory operation */ \
maddr = memory->memory_data + offset1; \
else \
goto out_of_bounds; \
#define CHECK_BULK_MEMORY_OVERFLOW(start, bytes, maddr) \
do { \
uint64 offset1 = (uint32)(start); \
if (disable_bounds_checks || offset1 + bytes <= get_linear_mem_size()) \
/* App heap space is not valid space for \
bulk memory operation */ \
maddr = memory->memory_data + offset1; \
else \
goto out_of_bounds; \
} while (0)
#else
#define CHECK_MEMORY_OVERFLOW(bytes) \
@ -1199,6 +1200,12 @@ wasm_interp_call_func_bytecode(WASMModuleInstance *module,
uint8 *maddr = NULL;
uint32 local_idx, local_offset, global_idx;
uint8 opcode, local_type, *global_addr;
#if WASM_CONFIGUABLE_BOUNDS_CHECKS != 0
bool disable_bounds_checks = !wasm_runtime_is_bounds_checks_enabled(
(WASMModuleInstanceCommon *)module);
#else
bool disable_bounds_checks = false;
#endif
#if WASM_ENABLE_LABELS_AS_VALUES != 0
#define HANDLE_OPCODE(op) &&HANDLE_##op