From: Zoltan Varga <vargaz@gmail.com>
Date: Tue, 19 Nov 2013 11:05:04 +0000 (+0100)
Subject: [llvm] Implement support for OP_TLS_GET_REG on osx/amd64.
X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=commitdiff_plain;h=3a9ccd06832f28954340754400468f8a7ff1c11f;p=mono.git

[llvm] Implement support for OP_TLS_GET_REG on osx/amd64.
---

diff --git a/mono/mini/mini-llvm.c b/mono/mini/mini-llvm.c
index 0f91727befe..6f9ca9ee2fd 100644
--- a/mono/mini/mini-llvm.c
+++ b/mono/mini/mini-llvm.c
@@ -3354,6 +3354,22 @@ process_bb (EmitContext *ctx, MonoBasicBlock *bb)
 
 			break;
 		}
+		case OP_TLS_GET_REG: {
+#if defined(TARGET_AMD64) && defined(TARGET_OSX)
+			/* See emit_tls_get_reg () */
+			LLVMValueRef base, shifted_offset, offset;
+			
+			base = LLVMConstInt (LLVMInt32Type (), mono_amd64_get_tls_gs_offset (), TRUE);
+			shifted_offset = LLVMBuildMul (builder, convert (ctx, lhs, LLVMInt32Type ()), LLVMConstInt (LLVMInt32Type (), 8, TRUE), "");
+			offset = LLVMBuildAdd (builder, base, shifted_offset, "");
+			// 256 == GS segment register
+			LLVMTypeRef ptrtype = LLVMPointerType (IntPtrType (), 256);
+			values [ins->dreg] = LLVMBuildLoad (builder, LLVMBuildIntToPtr (builder, offset, ptrtype, ""), "");
+#else
+			LLVM_FAILURE (ctx, "opcode tls-get");
+#endif
+			break;
+		}
 
 			/*
 			 * Overflow opcodes.