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authorAnton Samokhvalov <pg83@yandex.ru>2022-02-10 16:45:15 +0300
committerDaniil Cherednik <dcherednik@yandex-team.ru>2022-02-10 16:45:15 +0300
commit72cb13b4aff9bc9cf22e49251bc8fd143f82538f (patch)
treeda2c34829458c7d4e74bdfbdf85dff449e9e7fb8 /contrib/libs/cxxsupp/builtins/clear_cache.c
parent778e51ba091dc39e7b7fcab2b9cf4dbedfb6f2b5 (diff)
downloadydb-72cb13b4aff9bc9cf22e49251bc8fd143f82538f.tar.gz
Restoring authorship annotation for Anton Samokhvalov <pg83@yandex.ru>. Commit 1 of 2.
Diffstat (limited to 'contrib/libs/cxxsupp/builtins/clear_cache.c')
-rw-r--r--contrib/libs/cxxsupp/builtins/clear_cache.c316
1 files changed, 158 insertions, 158 deletions
diff --git a/contrib/libs/cxxsupp/builtins/clear_cache.c b/contrib/libs/cxxsupp/builtins/clear_cache.c
index 8eec068939..ad013eaded 100644
--- a/contrib/libs/cxxsupp/builtins/clear_cache.c
+++ b/contrib/libs/cxxsupp/builtins/clear_cache.c
@@ -1,159 +1,159 @@
-/* ===-- clear_cache.c - Implement __clear_cache ---------------------------===
- *
- * The LLVM Compiler Infrastructure
- *
- * This file is dual licensed under the MIT and the University of Illinois Open
- * Source Licenses. See LICENSE.TXT for details.
- *
- * ===----------------------------------------------------------------------===
- */
-
-#include "int_lib.h"
-#include <stddef.h>
-
-#if __APPLE__
- #include <libkern/OSCacheControl.h>
-#endif
-#if (defined(__FreeBSD__) || defined(__Bitrig__)) && defined(__arm__)
- #include <sys/types.h>
- #include <machine/sysarch.h>
-#endif
-
-#if defined(__NetBSD__) && defined(__arm__)
- #include <machine/sysarch.h>
-#endif
-
-#if defined(__mips__)
- #include <sys/cachectl.h>
- #include <sys/syscall.h>
- #include <unistd.h>
- #if defined(__ANDROID__) && defined(__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__)
- #include <asm/unistd.h>
-#endif
-
-/*
- * The compiler generates calls to __clear_cache() when creating
- * trampoline functions on the stack for use with nested functions.
- * It is expected to invalidate the instruction cache for the
- * specified range.
- */
-
-void __clear_cache(void *start, void *end) {
-#if __i386__ || __x86_64__
-/*
- * Intel processors have a unified instruction and data cache
- * so there is nothing to do
- */
-#elif defined(__arm__) && !defined(__APPLE__)
- #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__Bitrig__)
- struct arm_sync_icache_args arg;
-
- arg.addr = (uintptr_t)start;
- arg.len = (uintptr_t)end - (uintptr_t)start;
-
- sysarch(ARM_SYNC_ICACHE, &arg);
- #elif defined(__ANDROID__)
+/* ===-- clear_cache.c - Implement __clear_cache ---------------------------===
+ *
+ * The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_lib.h"
+#include <stddef.h>
+
+#if __APPLE__
+ #include <libkern/OSCacheControl.h>
+#endif
+#if (defined(__FreeBSD__) || defined(__Bitrig__)) && defined(__arm__)
+ #include <sys/types.h>
+ #include <machine/sysarch.h>
+#endif
+
+#if defined(__NetBSD__) && defined(__arm__)
+ #include <machine/sysarch.h>
+#endif
+
+#if defined(__mips__)
+ #include <sys/cachectl.h>
+ #include <sys/syscall.h>
+ #include <unistd.h>
+ #if defined(__ANDROID__) && defined(__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__)
+ #include <asm/unistd.h>
+#endif
+
+/*
+ * The compiler generates calls to __clear_cache() when creating
+ * trampoline functions on the stack for use with nested functions.
+ * It is expected to invalidate the instruction cache for the
+ * specified range.
+ */
+
+void __clear_cache(void *start, void *end) {
+#if __i386__ || __x86_64__
+/*
+ * Intel processors have a unified instruction and data cache
+ * so there is nothing to do
+ */
+#elif defined(__arm__) && !defined(__APPLE__)
+ #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__Bitrig__)
+ struct arm_sync_icache_args arg;
+
+ arg.addr = (uintptr_t)start;
+ arg.len = (uintptr_t)end - (uintptr_t)start;
+
+ sysarch(ARM_SYNC_ICACHE, &arg);
+ #elif defined(__ANDROID__)
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;
- __asm __volatile("svc 0x0" : "=r"(start_reg)
- : "r"(syscall_nr), "r"(start_reg), "r"(end_reg), "r"(flags) : "r0");
- if (start_reg != 0) {
- compilerrt_abort();
- }
- #else
- compilerrt_abort();
- #endif
-#elif defined(__mips__)
- const uintptr_t start_int = (uintptr_t) start;
- const uintptr_t end_int = (uintptr_t) end;
- #if defined(__ANDROID__) && defined(__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;
- uint64_t addr;
-
- // Get Cache Type Info
- uint64_t ctr_el0;
- __asm __volatile("mrs %0, ctr_el0" : "=r"(ctr_el0));
-
- /*
- * dc & ic instructions must use 64bit registers so we don't use
- * uintptr_t in case this runs in an IPL32 environment.
- */
- const size_t dcache_line_size = 4 << ((ctr_el0 >> 16) & 15);
- for (addr = xstart; addr < xend; addr += dcache_line_size)
- __asm __volatile("dc cvau, %0" :: "r"(addr));
- __asm __volatile("dsb ish");
-
- const size_t icache_line_size = 4 << ((ctr_el0 >> 0) & 15);
- for (addr = xstart; addr < xend; addr += icache_line_size)
- __asm __volatile("ic ivau, %0" :: "r"(addr));
- __asm __volatile("isb sy");
-#else
- #if __APPLE__
- /* On Darwin, sys_icache_invalidate() provides this functionality */
- sys_icache_invalidate(start, end-start);
- #else
- compilerrt_abort();
- #endif
-#endif
-}
-
+ 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;
+ __asm __volatile("svc 0x0" : "=r"(start_reg)
+ : "r"(syscall_nr), "r"(start_reg), "r"(end_reg), "r"(flags) : "r0");
+ if (start_reg != 0) {
+ compilerrt_abort();
+ }
+ #else
+ compilerrt_abort();
+ #endif
+#elif defined(__mips__)
+ const uintptr_t start_int = (uintptr_t) start;
+ const uintptr_t end_int = (uintptr_t) end;
+ #if defined(__ANDROID__) && defined(__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;
+ uint64_t addr;
+
+ // Get Cache Type Info
+ uint64_t ctr_el0;
+ __asm __volatile("mrs %0, ctr_el0" : "=r"(ctr_el0));
+
+ /*
+ * dc & ic instructions must use 64bit registers so we don't use
+ * uintptr_t in case this runs in an IPL32 environment.
+ */
+ const size_t dcache_line_size = 4 << ((ctr_el0 >> 16) & 15);
+ for (addr = xstart; addr < xend; addr += dcache_line_size)
+ __asm __volatile("dc cvau, %0" :: "r"(addr));
+ __asm __volatile("dsb ish");
+
+ const size_t icache_line_size = 4 << ((ctr_el0 >> 0) & 15);
+ for (addr = xstart; addr < xend; addr += icache_line_size)
+ __asm __volatile("ic ivau, %0" :: "r"(addr));
+ __asm __volatile("isb sy");
+#else
+ #if __APPLE__
+ /* On Darwin, sys_icache_invalidate() provides this functionality */
+ sys_icache_invalidate(start, end-start);
+ #else
+ compilerrt_abort();
+ #endif
+#endif
+}
+