From 83cacc48884c3d3eb3e479bac7708ad08334b78b Mon Sep 17 00:00:00 2001
From: Krystof Vasa <kvasa@me.com>
Date: Mon, 19 Aug 2013 09:16:38 +0100
Subject: [PATCH] Trying to fix things

---
 Gglobal.c    | 19 +++++++++++++++++++
 Ginit.c      |  5 ++---
 Makefile     |  1 +
 getcontext.S | 29 -----------------------------
 init.h       |  4 +++-
 5 files changed, 25 insertions(+), 33 deletions(-)

diff --git a/Gglobal.c b/Gglobal.c
index f3b2413..24c5f33 100644
--- a/Gglobal.c
+++ b/Gglobal.c
@@ -52,6 +52,24 @@ HIDDEN const uint8_t dwarf_to_unw_regnum_map[DWARF_NUM_PRESERVED_REGS] =
     UNW_X86_64_R14,
     UNW_X86_64_R15,
     UNW_X86_64_RIP,
+#ifdef CONFIG_MSABI_SUPPORT
+    UNW_X86_64_XMM0,
+    UNW_X86_64_XMM1,
+    UNW_X86_64_XMM2,
+    UNW_X86_64_XMM3,
+    UNW_X86_64_XMM4,
+    UNW_X86_64_XMM5,
+    UNW_X86_64_XMM6,
+    UNW_X86_64_XMM7,
+    UNW_X86_64_XMM8,
+    UNW_X86_64_XMM9,
+    UNW_X86_64_XMM10,
+    UNW_X86_64_XMM11,
+    UNW_X86_64_XMM12,
+    UNW_X86_64_XMM13,
+    UNW_X86_64_XMM14,
+    UNW_X86_64_XMM15
+#endif
   };
 
 HIDDEN void
@@ -69,6 +87,7 @@ tdep_init (void)
     mi_init ();
     dwarf_init ();
     tdep_init_mem_validate ();
+    x86_64_local_addr_space_init ();
 
     tdep_init_done = 1;	/* signal that we're initialized... */
   }
diff --git a/Ginit.c b/Ginit.c
index 7ad77f8..06c69c2 100644
--- a/Ginit.c
+++ b/Ginit.c
@@ -29,6 +29,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 #include <sys/param.h>
 #include <sys/types.h>
 #include <sys/mman.h>
+#include <sys/linker.h>
 
 #include "unwind_i.h"
 
@@ -238,9 +239,7 @@ get_static_proc_name (unw_addr_space_t as, unw_word_t ip,
 		      char *buf, size_t buf_len, unw_word_t *offp,
 		      void *arg)
 {
-	// TODO
-	return 0;
-//  return _Uelf64_get_proc_name (as, getpid (), ip, buf, buf_len, offp);
+   return linker_search_symbol_name((caddr_t)ip, buf, buf_len, offp);
 }
 
 HIDDEN void
diff --git a/Makefile b/Makefile
index 1f62618..65ee582 100644
--- a/Makefile
+++ b/Makefile
@@ -23,6 +23,7 @@ SRCS	= libunwind.c \
 		_ReadULEB.c \
 		backtrace.c \
 		dyn-cancel.c \
+		dyn-info-list.c \
 		dyn-register.c \
 		flush_cache.c \
 		init.c \
diff --git a/getcontext.S b/getcontext.S
index efd800c..49c7ef3 100644
--- a/getcontext.S
+++ b/getcontext.S
@@ -57,35 +57,6 @@ _Ux86_64_getcontext:
 	movq %rax, UC_MCONTEXT_GREGS_RAX(%rdi)
 	movq %rcx, UC_MCONTEXT_GREGS_RCX(%rdi)
 
-#if defined __linux__
-	/* Save fp state (not needed, except for setcontext not
-	   restoring garbage).  */
-	leaq UC_MCONTEXT_FPREGS_MEM(%rdi),%r8
-	movq %r8, UC_MCONTEXT_FPREGS_PTR(%rdi)
-	fnstenv (%r8)
-	stmxcsr FPREGS_OFFSET_MXCSR(%r8)
-#elif defined __FreeBSD__
-	/* Save rflags and segment registers, so that sigreturn(2)
-	does not complain. */
-	pushfq
-	.cfi_adjust_cfa_offset 8
-	popq UC_MCONTEXT_RFLAGS(%rdi)
-	.cfi_adjust_cfa_offset -8
-	movl $0, UC_MCONTEXT_FLAGS(%rdi)
-	movw %cs, UC_MCONTEXT_CS(%rdi)
-	movw %ss, UC_MCONTEXT_SS(%rdi)
-#if 0
-	/* Setting the flags to 0 above disables restore of segment
-	   registers from the context */
-	movw %ds, UC_MCONTEXT_DS(%rdi)
-	movw %es, UC_MCONTEXT_ES(%rdi)
-	movw %fs, UC_MCONTEXT_FS(%rdi)
-	movw %gs, UC_MCONTEXT_GS(%rdi)
-#endif
-	movq $UC_MCONTEXT_MC_LEN_VAL, UC_MCONTEXT_MC_LEN(%rdi)
-#else
-#error Port me
-#endif
 
 	leaq 8(%rsp), %rax /* exclude this call.  */
 	movq %rax, UC_MCONTEXT_GREGS_RSP(%rdi)
diff --git a/init.h b/init.h
index 906b95d..b9ed055 100644
--- a/init.h
+++ b/init.h
@@ -29,7 +29,9 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 
 /* Avoid a trip to x86_64_r_uc_addr() for purely local initialisation. */
 # define REG_INIT_LOC(c, rlc, ruc) \
-    DWARF_LOC ((unw_word_t) &c->uc->uc_mcontext.mc_ ## rlc, 0)
+    DWARF_REG_LOC (&c->dwarf, UNW_X86_64_ ## ruc)
+// ?
+//    DWARF_LOC ((unw_word_t) &c->uc->uc_mcontext.mc_ ## rlc, 0)
 
 static inline int
 common_init (struct cursor *c, unsigned use_prev_instr)