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Check SPRR by issuing MRS

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lazymio
2024-12-08 14:46:28 +08:00
parent 958ed09153
commit 13a8da8538
2 changed files with 22 additions and 30 deletions
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22
qemu/include/tcg/tcg-apple-jit.h
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@@ -30,13 +30,12 @@
#include "stdlib.h"
#include "stdbool.h"
#if defined(__APPLE__) && defined(HAVE_SPRR) && (defined(__arm__) || defined(__aarch64__))
// Returns the S3_6_c15_c1_5 register's value
// Taken from
// https://stackoverflow.com/questions/70019553/lldb-how-to-read-the-permissions-of-a-memory-region-for-a-thread
// https://blog.svenpeter.dev/posts/m1_sprr_gxf/
// On Github Action (Virtualized environment), this shall always returns 0
#if defined(HAVE_SPRR_MRS)
static inline uint64_t read_sprr_perm(void)
{
uint64_t v;
@@ -45,6 +44,14 @@ static inline uint64_t read_sprr_perm(void)
: "=r"(v)::"memory");
return v;
}
#else
static inline uint64_t read_sprr_perm(void)
{
return 0;
}
#endif
#if defined(__APPLE__) && defined(HAVE_PTHREAD_JIT_PROTECT) && (defined(__arm__) || defined(__aarch64__))
__attribute__((unused)) static inline uint8_t thread_mask()
{
@@ -77,15 +84,6 @@ static inline void assert_executable(bool executable) {
#else
// Returns the S3_6_c15_c1_5 register's value
// Taken from
// https://stackoverflow.com/questions/70019553/lldb-how-to-read-the-permissions-of-a-memory-region-for-a-thread
// https://blog.svenpeter.dev/posts/m1_sprr_gxf/
static inline uint64_t read_sprr_perm(void)
{
return 0;
}
__attribute__((unused)) static inline uint8_t thread_mask()
{
return 0;
@@ -107,7 +105,7 @@ static inline void assert_executable(bool executable) {
#endif
#if defined(__APPLE__) && defined(HAVE_PTHREAD_JIT_PROTECT) && defined(HAVE_SPRR) && (defined(__arm__) || defined(__aarch64__))
#if defined(__APPLE__) && defined(HAVE_PTHREAD_JIT_PROTECT) && (defined(__arm__) || defined(__aarch64__))
/* write protect enable = write disable */
static inline void jit_write_protect(int enabled)