From 21eadbe6f1f3390e61e4be58b277c35f590d4f76 Mon Sep 17 00:00:00 2001
From: Jyun-Yan You <jyyou@cs.nctu.edu.tw>
Date: Sun, 1 Jan 2012 14:36:48 +0800
Subject: [PATCH] add missing library, enable segmented stacks for freebsd

---
 mk/platform.mk                 |  2 +-
 src/comp/back/link.rs          |  9 ++++-----
 src/rt/arch/x86_64/record_sp.S | 10 ++++++----
 3 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/mk/platform.mk b/mk/platform.mk
index 40a3dd8ebc6..a978ccc95aa 100644
--- a/mk/platform.mk
+++ b/mk/platform.mk
@@ -25,7 +25,7 @@ ifneq ($(findstring freebsd,$(CFG_OSTYPE)),)
   CFG_LIB_NAME=lib$(1).so
   CFG_LIB_GLOB=lib$(1)-*.so
   CFG_GCCISH_CFLAGS += -fPIC -I/usr/local/include
-  CFG_GCCISH_LINK_FLAGS += -shared -fPIC -lpthread -lrt
+  CFG_GCCISH_LINK_FLAGS += -shared -fPIC -lpthread -lrt -L/usr/local/lib -lexecinfo
   CFG_GCCISH_DEF_FLAG := -Wl,--export-dynamic,--dynamic-list=
   CFG_GCCISH_PRE_LIB_FLAGS := -Wl,-whole-archive
   CFG_GCCISH_POST_LIB_FLAGS := -Wl,-no-whole-archive
diff --git a/src/comp/back/link.rs b/src/comp/back/link.rs
index 34f58b60aa9..7f413735acd 100644
--- a/src/comp/back/link.rs
+++ b/src/comp/back/link.rs
@@ -220,7 +220,6 @@ fn run_passes(sess: session::session, llmod: ModuleRef, output: str) {
             } else { FileType = LLVMAssemblyFile; }
             // Write optimized bitcode if --save-temps was on.
 
-            let seg_stack = sess.get_targ_cfg().os != session::os_freebsd;
             if opts.save_temps {
                 // Always output the bitcode file with --save-temps
 
@@ -245,7 +244,7 @@ fn run_passes(sess: session::session, llmod: ModuleRef, output: str) {
                                     buf_o,
                                     LLVMAssemblyFile,
                                     CodeGenOptLevel,
-                                    seg_stack)})});
+                                    true)})});
                 }
 
 
@@ -265,7 +264,7 @@ fn run_passes(sess: session::session, llmod: ModuleRef, output: str) {
                                         buf_o,
                                         LLVMObjectFile,
                                         CodeGenOptLevel,
-                                        seg_stack)})});
+                                        true)})});
                 }
             } else {
                 // If we aren't saving temps then just output the file
@@ -283,7 +282,7 @@ fn run_passes(sess: session::session, llmod: ModuleRef, output: str) {
                                     buf_o,
                                     FileType,
                                     CodeGenOptLevel,
-                                    seg_stack)})});
+                                    true)})});
             }
             // Clean up and return
 
@@ -661,7 +660,7 @@ fn rmext(filename: str) -> str {
     }
 
     if sess.get_targ_cfg().os == session::os_freebsd {
-        gcc_args += ["-lrt"];
+        gcc_args += ["-lrt", "-L/usr/local/lib", "-lexecinfo"];
     }
 
     // OS X 10.6 introduced 'compact unwind info', which is produced by the
diff --git a/src/rt/arch/x86_64/record_sp.S b/src/rt/arch/x86_64/record_sp.S
index 4330d4cfb76..3b238d33c77 100644
--- a/src/rt/arch/x86_64/record_sp.S
+++ b/src/rt/arch/x86_64/record_sp.S
@@ -14,21 +14,23 @@
 .globl GET_SP
 .globl CHECK_STACK
 
-#if defined(__linux__) || defined(__FreeBSD__)
+#if defined(__linux__)
 RECORD_SP:
 	movq %rdi, %fs:112
 	ret
-#else
-#if defined(__APPLE__)
+#elif defined(__APPLE__)
 RECORD_SP:
 	movq $0x60+90*8, %rsi
 	movq %rdi, %gs:(%rsi)
 	ret
+#elif defined(__FreeBSD__)
+RECORD_SP:
+	movq %rdi, %fs:24
+	ret
 #else
 RECORD_SP:
 	ret
 #endif
-#endif
 
 GET_SP:
 	movq %rsp, %rax
-- 
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