From 4d940e9e331487413199361407caee4376d9d804 Mon Sep 17 00:00:00 2001
From: tevador <tevador@gmail.com>
Date: Sun, 29 Nov 2020 14:12:26 +0100
Subject: [PATCH] invalidate instruction cache on apple silicon

---
 src/jit_compiler_a64.cpp | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/jit_compiler_a64.cpp b/src/jit_compiler_a64.cpp
index 5f6fcb3..0a961aa 100644
--- a/src/jit_compiler_a64.cpp
+++ b/src/jit_compiler_a64.cpp
@@ -32,6 +32,9 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "program.hpp"
 #include "reciprocal.h"
 #include "virtual_memory.hpp"
+#ifdef __APPLE__
+#include <libkern/OSCacheControl.h>
+#endif
 
 namespace ARMV8A {
 
@@ -163,7 +166,9 @@ void JitCompilerA64::generateProgram(Program& program, ProgramConfiguration& con
 	codePos = ((uint8_t*)randomx_program_aarch64_update_spMix1) - ((uint8_t*)randomx_program_aarch64);
 	emit32(ARMV8A::EOR | 10 | (IntRegMap[config.readReg0] << 5) | (IntRegMap[config.readReg1] << 16), code, codePos);
 
-#ifdef __GNUC__
+#if defined(__APPLE__)
+	sys_icache_invalidate(code + MainLoopBegin, codePos - MainLoopBegin);
+#elif defined(__GNUC__)
 	__builtin___clear_cache(reinterpret_cast<char*>(code + MainLoopBegin), reinterpret_cast<char*>(code + codePos));
 #endif
 }
@@ -220,7 +225,9 @@ void JitCompilerA64::generateProgramLight(Program& program, ProgramConfiguration
 	emit32(ARMV8A::ADD_IMM_LO | 2 | (2 << 5) | (imm_lo << 10), code, codePos);
 	emit32(ARMV8A::ADD_IMM_HI | 2 | (2 << 5) | (imm_hi << 10), code, codePos);
 
-#ifdef __GNUC__
+#if defined(__APPLE__)
+	sys_icache_invalidate(code + MainLoopBegin, codePos - MainLoopBegin);
+#elif defined(__GNUC__)
 	__builtin___clear_cache(reinterpret_cast<char*>(code + MainLoopBegin), reinterpret_cast<char*>(code + codePos));
 #endif
 }
@@ -338,7 +345,9 @@ void JitCompilerA64::generateSuperscalarHash(SuperscalarProgram(&programs)[N], s
 	memcpy(code + codePos, p1, p2 - p1);
 	codePos += p2 - p1;
 
-#ifdef __GNUC__
+#if defined(__APPLE__)
+	sys_icache_invalidate(code + CodeSize, codePos - CodeSize);
+#elif defined(__GNUC__)
 	__builtin___clear_cache(reinterpret_cast<char*>(code + CodeSize), reinterpret_cast<char*>(code + codePos));
 #endif
 }