Relative address references for Darwin

Author: titzer

aeneas/src/x86-64/X86_64Darwin.v3

@@ -272,7 +272,7 @@ class X86_64DarwinBackend extends X86_64Backend {
 		var msgAddr = Addr.new(mach.codeRegion, null, 0);
 		asm.movd_r_i(SYSNUM, SYS_write);
 		asm.movd_r_i(PARAM0, STDERR);
-		asm.lea(PARAM1, X86_64AddrRef.new(null, null, 1, msgAddr, false));	// buffer
+		asm.lea(PARAM1, X86_64AddrRef.new(null, null, 1, msgAddr, true));	// buffer
 		asm.movq_r_i(PARAM2, ex.length + 1);		// write size
 		asm.syscall();
 		// 2. encode a call to exit()
@@ -288,7 +288,7 @@ class X86_64DarwinBackend extends X86_64Backend {
 		// construct sigaction (in reverse order) on the stack
 		asm.pushq_i(0x04000000); // sa_flags
 		asm.pushq_i(0); // sa_mask
-		asm.lea(Regs.RBP, X86_64AddrRef.new(null, null, 1, handler, false)); // XXX: pushq_i with patch
+		asm.lea(Regs.RBP, X86_64AddrRef.new(null, null, 1, handler, true)); // XXX: pushq_i with patch
 		asm.pushq_r(Regs.RBP); // sa_handler
 		//asm.pushq_i(0x08000000); // sa_restorer (fatal signal handlers never return)
 		//TODO: why is handler address put in the wrong place?