summaryrefslogtreecommitdiff
path: root/lib/builtins
diff options
context:
space:
mode:
Diffstat (limited to 'lib/builtins')
-rw-r--r--lib/builtins/CMakeLists.txt7
-rw-r--r--lib/builtins/atomic.c18
-rw-r--r--lib/builtins/clear_cache.c66
-rw-r--r--lib/builtins/gcc_personality_v0.c48
-rw-r--r--lib/builtins/int_types.h3
5 files changed, 81 insertions, 61 deletions
diff --git a/lib/builtins/CMakeLists.txt b/lib/builtins/CMakeLists.txt
index 999faa86739d..4d102c615003 100644
--- a/lib/builtins/CMakeLists.txt
+++ b/lib/builtins/CMakeLists.txt
@@ -79,7 +79,6 @@ set(GENERIC_SOURCES
floatuntidf.c
floatuntisf.c
floatuntixf.c
- gcc_personality_v0.c
int_util.c
lshrdi3.c
lshrti3.c
@@ -137,6 +136,12 @@ set(GENERIC_SOURCES
umodsi3.c
umodti3.c)
+if (HAVE_UNWIND_H)
+ set(GENERIC_SOURCES
+ ${GENERIC_SOURCES}
+ gcc_personality_v0.c)
+endif ()
+
set(x86_64_SOURCES
x86_64/floatdidf.c
x86_64/floatdisf.c
diff --git a/lib/builtins/atomic.c b/lib/builtins/atomic.c
index 02429a653d2b..35c8837dcecf 100644
--- a/lib/builtins/atomic.c
+++ b/lib/builtins/atomic.c
@@ -28,20 +28,14 @@
#include <stdint.h>
#include <string.h>
+#include "assembly.h"
+
// Clang objects if you redefine a builtin. This little hack allows us to
// define a function with the same name as an intrinsic.
-#if __APPLE__
-// mach-o has extra leading underscore
-#pragma redefine_extname __atomic_load_c ___atomic_load
-#pragma redefine_extname __atomic_store_c ___atomic_store
-#pragma redefine_extname __atomic_exchange_c ___atomic_exchange
-#pragma redefine_extname __atomic_compare_exchange_c ___atomic_compare_exchange
-#else
-#pragma redefine_extname __atomic_load_c __atomic_load
-#pragma redefine_extname __atomic_store_c __atomic_store
-#pragma redefine_extname __atomic_exchange_c __atomic_exchange
-#pragma redefine_extname __atomic_compare_exchange_c __atomic_compare_exchange
-#endif
+#pragma redefine_extname __atomic_load_c SYMBOL_NAME(__atomic_load)
+#pragma redefine_extname __atomic_store_c SYMBOL_NAME(__atomic_store)
+#pragma redefine_extname __atomic_exchange_c SYMBOL_NAME(__atomic_exchange)
+#pragma redefine_extname __atomic_compare_exchange_c SYMBOL_NAME(__atomic_compare_exchange)
/// Number of locks. This allocates one page on 32-bit platforms, two on
/// 64-bit. This can be specified externally if a different trade between
diff --git a/lib/builtins/clear_cache.c b/lib/builtins/clear_cache.c
index 86e68afad3b7..61b1e9bbb5c0 100644
--- a/lib/builtins/clear_cache.c
+++ b/lib/builtins/clear_cache.c
@@ -13,12 +13,62 @@
#if __APPLE__
#include <libkern/OSCacheControl.h>
#endif
+#if defined(__FreeBSD__) && defined(__arm__)
+ #include <sys/types.h>
+ #include <machine/sysarch.h>
+#endif
+
#if defined(__NetBSD__) && defined(__arm__)
#include <machine/sysarch.h>
#endif
#if defined(__ANDROID__) && defined(__mips__)
#include <sys/cachectl.h>
+ #include <sys/syscall.h>
+ #ifdef __LP64__
+ /*
+ * clear_mips_cache - Invalidates instruction cache for Mips.
+ */
+ static void clear_mips_cache(const void* Addr, size_t Size) {
+ asm volatile (
+ ".set push\n"
+ ".set noreorder\n"
+ ".set noat\n"
+ "beq %[Size], $zero, 20f\n" /* If size == 0, branch around. */
+ "nop\n"
+ "daddu %[Size], %[Addr], %[Size]\n" /* Calculate end address + 1 */
+ "rdhwr $v0, $1\n" /* Get step size for SYNCI.
+ $1 is $HW_SYNCI_Step */
+ "beq $v0, $zero, 20f\n" /* If no caches require
+ synchronization, branch
+ around. */
+ "nop\n"
+ "10:\n"
+ "synci 0(%[Addr])\n" /* Synchronize all caches around
+ address. */
+ "daddu %[Addr], %[Addr], $v0\n" /* Add step size. */
+ "sltu $at, %[Addr], %[Size]\n" /* Compare current with end
+ address. */
+ "bne $at, $zero, 10b\n" /* Branch if more to do. */
+ "nop\n"
+ "sync\n" /* Clear memory hazards. */
+ "20:\n"
+ "bal 30f\n"
+ "nop\n"
+ "30:\n"
+ "daddiu $ra, $ra, 12\n" /* $ra has a value of $pc here.
+ Add offset of 12 to point to the
+ instruction after the last nop.
+ */
+ "jr.hb $ra\n" /* Return, clearing instruction
+ hazards. */
+ "nop\n"
+ ".set pop\n"
+ : [Addr] "+r"(Addr), [Size] "+r"(Size)
+ :: "at", "ra", "v0", "memory"
+ );
+ }
+ #endif
#endif
#if defined(__ANDROID__) && defined(__arm__)
@@ -39,7 +89,7 @@ void __clear_cache(void *start, void *end) {
* so there is nothing to do
*/
#elif defined(__arm__) && !defined(__APPLE__)
- #if defined(__NetBSD__)
+ #if defined(__FreeBSD__) || defined(__NetBSD__)
struct arm_sync_icache_args arg;
arg.addr = (uintptr_t)start;
@@ -47,7 +97,7 @@ void __clear_cache(void *start, void *end) {
sysarch(ARM_SYNC_ICACHE, &arg);
#elif defined(__ANDROID__)
- const register int start_reg __asm("r0") = (int) (intptr_t) start;
+ register int start_reg __asm("r0") = (int) (intptr_t) start;
const register int end_reg __asm("r1") = (int) (intptr_t) end;
const register int flags __asm("r2") = 0;
const register int syscall_nr __asm("r7") = __ARM_NR_cacheflush;
@@ -62,7 +112,17 @@ void __clear_cache(void *start, void *end) {
#elif defined(__ANDROID__) && defined(__mips__)
const uintptr_t start_int = (uintptr_t) start;
const uintptr_t end_int = (uintptr_t) end;
- _flush_cache(start, (end_int - start_int), BCACHE);
+ #ifdef __LP64__
+ // Call synci implementation for short address range.
+ const uintptr_t address_range_limit = 256;
+ if ((end_int - start_int) <= address_range_limit) {
+ clear_mips_cache(start, (end_int - start_int));
+ } else {
+ syscall(__NR_cacheflush, start, (end_int - start_int), BCACHE);
+ }
+ #else
+ syscall(__NR_cacheflush, start, (end_int - start_int), BCACHE);
+ #endif
#elif defined(__aarch64__) && !defined(__APPLE__)
uint64_t xstart = (uint64_t)(uintptr_t) start;
uint64_t xend = (uint64_t)(uintptr_t) end;
diff --git a/lib/builtins/gcc_personality_v0.c b/lib/builtins/gcc_personality_v0.c
index 869f4178e853..4b95cfd43b05 100644
--- a/lib/builtins/gcc_personality_v0.c
+++ b/lib/builtins/gcc_personality_v0.c
@@ -11,47 +11,7 @@
#include "int_lib.h"
-/*
- * _Unwind_* stuff based on C++ ABI public documentation
- * http://refspecs.freestandards.org/abi-eh-1.21.html
- */
-
-typedef enum {
- _URC_NO_REASON = 0,
- _URC_FOREIGN_EXCEPTION_CAUGHT = 1,
- _URC_FATAL_PHASE2_ERROR = 2,
- _URC_FATAL_PHASE1_ERROR = 3,
- _URC_NORMAL_STOP = 4,
- _URC_END_OF_STACK = 5,
- _URC_HANDLER_FOUND = 6,
- _URC_INSTALL_CONTEXT = 7,
- _URC_CONTINUE_UNWIND = 8
-} _Unwind_Reason_Code;
-
-typedef enum {
- _UA_SEARCH_PHASE = 1,
- _UA_CLEANUP_PHASE = 2,
- _UA_HANDLER_FRAME = 4,
- _UA_FORCE_UNWIND = 8,
- _UA_END_OF_STACK = 16
-} _Unwind_Action;
-
-typedef struct _Unwind_Context* _Unwind_Context_t;
-
-struct _Unwind_Exception {
- uint64_t exception_class;
- void (*exception_cleanup)(_Unwind_Reason_Code reason,
- struct _Unwind_Exception* exc);
- uintptr_t private_1;
- uintptr_t private_2;
-};
-
-COMPILER_RT_ABI const uint8_t* _Unwind_GetLanguageSpecificData(_Unwind_Context_t c);
-COMPILER_RT_ABI void _Unwind_SetGR(_Unwind_Context_t c, int i, uintptr_t n);
-COMPILER_RT_ABI void _Unwind_SetIP(_Unwind_Context_t, uintptr_t new_value);
-COMPILER_RT_ABI uintptr_t _Unwind_GetIP(_Unwind_Context_t context);
-COMPILER_RT_ABI uintptr_t _Unwind_GetRegionStart(_Unwind_Context_t context);
-
+#include <unwind.h>
/*
* Pointer encodings documented at:
@@ -185,12 +145,12 @@ static uintptr_t readEncodedPointer(const uint8_t** data, uint8_t encoding)
COMPILER_RT_ABI _Unwind_Reason_Code
__gcc_personality_sj0(int version, _Unwind_Action actions,
uint64_t exceptionClass, struct _Unwind_Exception* exceptionObject,
- _Unwind_Context_t context)
+ struct _Unwind_Context *context)
#else
COMPILER_RT_ABI _Unwind_Reason_Code
__gcc_personality_v0(int version, _Unwind_Action actions,
uint64_t exceptionClass, struct _Unwind_Exception* exceptionObject,
- _Unwind_Context_t context)
+ struct _Unwind_Context *context)
#endif
{
/* Since C does not have catch clauses, there is nothing to do during */
@@ -199,7 +159,7 @@ __gcc_personality_v0(int version, _Unwind_Action actions,
return _URC_CONTINUE_UNWIND;
/* There is nothing to do if there is no LSDA for this frame. */
- const uint8_t* lsda = _Unwind_GetLanguageSpecificData(context);
+ const uint8_t* lsda = (uint8_t*)_Unwind_GetLanguageSpecificData(context);
if ( lsda == (uint8_t*) 0 )
return _URC_CONTINUE_UNWIND;
diff --git a/lib/builtins/int_types.h b/lib/builtins/int_types.h
index 5107f71550ac..aedae14b2046 100644
--- a/lib/builtins/int_types.h
+++ b/lib/builtins/int_types.h
@@ -56,7 +56,8 @@ typedef union
}s;
} udwords;
-#if __LP64__
+/* MIPS64 issue: PR 20098 */
+#if defined(__LP64__) && !(defined(__mips__) && defined(__clang__))
#define CRT_HAS_128BIT
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 10:12:55 +0000