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aarch64: Add missing ACLE support for PAC-RET

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Define the __ARM_FEATURE_PAC_DEFAULT feature test
macro when PAC-RET branch protection is enabled.

2020-07-13  Szabolcs Nagy  <szabolcs.nagy@arm.com>

gcc/ChangeLog:

	* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins): Add
	__ARM_FEATURE_PAC_DEFAULT support.
This commit is contained in:
Szabolcs Nagy 2020-07-02 16:11:04 +01:00
parent 6a391e06f9
commit a1faa8e247
1 changed files with 13 additions and 0 deletions
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13
gcc/config/aarch64/aarch64-c.c
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@ -181,6 +181,19 @@ aarch64_update_cpp_builtins (cpp_reader *pfile)
aarch64_def_or_undef (aarch64_bti_enabled (),
"__ARM_FEATURE_BTI_DEFAULT", pfile);
cpp_undef (pfile, "__ARM_FEATURE_PAC_DEFAULT");
if (aarch64_ra_sign_scope != AARCH64_FUNCTION_NONE)
{
int v = 0;
if (aarch64_ra_sign_key == AARCH64_KEY_A)
v |= 1;
if (aarch64_ra_sign_key == AARCH64_KEY_B)
v |= 2;
if (aarch64_ra_sign_scope == AARCH64_FUNCTION_ALL)
v |= 4;
builtin_define_with_int_value ("__ARM_FEATURE_PAC_DEFAULT", v);
}
aarch64_def_or_undef (TARGET_I8MM, "__ARM_FEATURE_MATMUL_INT8", pfile);
aarch64_def_or_undef (TARGET_BF16_SIMD,
"__ARM_FEATURE_BF16_VECTOR_ARITHMETIC", pfile);