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Auto-check wrgsbase in cmake script (#2437)

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Auto-check whether `WRGSBASE` instruction is supported in linux x86-64 in the
cmake script. And if not, disable writing x86 GS register.
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Wenyong Huang 2023-08-09 19:43:08 +08:00 committed by GitHub
parent f34e7431fd
commit 490fa2ddac
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1 changed files with 24 additions and 0 deletions
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24
build-scripts/config_common.cmake
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@ -395,6 +395,30 @@ endif ()
if (WAMR_DISABLE_WRITE_GS_BASE EQUAL 1)
add_definitions (-DWASM_DISABLE_WRITE_GS_BASE=1)
message (" Write linear memory base addr to x86 GS register disabled")
elseif (WAMR_BUILD_TARGET STREQUAL "X86_64"
AND WAMR_BUILD_PLATFORM STREQUAL "linux")
set (TEST_WRGSBASE_SOURCE "${CMAKE_BINARY_DIR}/test_wrgsbase.c")
file (WRITE "${TEST_WRGSBASE_SOURCE}" "
#include <stdio.h>
#include <stdint.h>
int main() {
uint64_t value;
asm volatile (\"wrgsbase %0\" : : \"r\"(value));
printf(\"WRGSBASE instruction is available.\\n\");
return 0;
}")
# Try to compile and run the test program
try_run (TEST_WRGSBASE_RESULT
TEST_WRGSBASE_COMPILED
${CMAKE_BINARY_DIR}/test_wrgsbase
SOURCES ${TEST_WRGSBASE_SOURCE}
CMAKE_FLAGS -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
)
#message("${TEST_WRGSBASE_COMPILED}, ${TEST_WRGSBASE_RESULT}")
if (NOT TEST_WRGSBASE_RESULT EQUAL 0)
add_definitions (-DWASM_DISABLE_WRITE_GS_BASE=1)
message (" Write linear memory base addr to x86 GS register disabled")
endif ()
endif ()
if (WAMR_CONFIGUABLE_BOUNDS_CHECKS EQUAL 1)
add_definitions (-DWASM_CONFIGURABLE_BOUNDS_CHECKS=1)