On Tue, May 24, 2011 at 9:08 AM, Ariel Burton
<ariel.bur...@roguewave.com> wrote:
> Thanks for the prompt reply.
>
> Yes, that's what the compiler is doing. Here's the
> assembler for the prologue of f_ms_abi:
Can you try the attached?
Lassi/Paul: could you comment if you experience any slowdown on real
world programs? Lperf-trace seems to be happy.
-Arun
From 3567c6474e9c655267dbadac4b1ae3d4b5ddf1fe Mon Sep 17 00:00:00 2001
From: Arun Sharma <asha...@fb.com>
Date: Thu, 26 May 2011 09:15:19 -0700
Subject: [PATCH] Handle register nums > 16 on x86_64
gcc generates them when using ms-abi for example and readelf knows
about them.
---
include/libunwind-x86_64.h | 18 +++++++++++++++++-
include/tdep-x86_64/dwarf-config.h | 4 ++--
src/x86_64/Gglobal.c | 20 ++++++++++++++++++--
3 files changed, 37 insertions(+), 5 deletions(-)
diff --git a/include/libunwind-x86_64.h b/include/libunwind-x86_64.h
index 50b4de2..78678ea 100644
--- a/include/libunwind-x86_64.h
+++ b/include/libunwind-x86_64.h
@@ -72,13 +72,29 @@ typedef enum
UNW_X86_64_R14,
UNW_X86_64_R15,
UNW_X86_64_RIP,
+ 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,
/* XXX Add other regs here */
/* frame info (read-only) */
UNW_X86_64_CFA,
- UNW_TDEP_LAST_REG = UNW_X86_64_RIP,
+ UNW_TDEP_LAST_REG = UNW_X86_64_XMM15,
UNW_TDEP_IP = UNW_X86_64_RIP,
UNW_TDEP_SP = UNW_X86_64_RSP,
diff --git a/include/tdep-x86_64/dwarf-config.h b/include/tdep-x86_64/dwarf-config.h
index 8023f36..22a0312 100644
--- a/include/tdep-x86_64/dwarf-config.h
+++ b/include/tdep-x86_64/dwarf-config.h
@@ -32,9 +32,9 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
#define dwarf_config_h
/* XXX need to verify if this value is correct */
-#define DWARF_NUM_PRESERVED_REGS 17
+#define DWARF_NUM_PRESERVED_REGS 33
-#define DWARF_REGNUM_MAP_LENGTH 17
+#define DWARF_REGNUM_MAP_LENGTH 33
/* Return TRUE if the ADDR_SPACE uses big-endian byte-order. */
#define dwarf_is_big_endian(addr_space) 0
diff --git a/src/x86_64/Gglobal.c b/src/x86_64/Gglobal.c
index 8decf32..ae08df3 100644
--- a/src/x86_64/Gglobal.c
+++ b/src/x86_64/Gglobal.c
@@ -33,7 +33,7 @@ HIDDEN int tdep_needs_initialization = 1;
/* See comments for svr4_dbx_register_map[] in gcc/config/i386/i386.c. */
-HIDDEN uint8_t dwarf_to_unw_regnum_map[17] =
+HIDDEN uint8_t dwarf_to_unw_regnum_map[DWARF_NUM_PRESERVED_REGS] =
{
UNW_X86_64_RAX,
UNW_X86_64_RDX,
@@ -51,7 +51,23 @@ HIDDEN uint8_t dwarf_to_unw_regnum_map[17] =
UNW_X86_64_R13,
UNW_X86_64_R14,
UNW_X86_64_R15,
- UNW_X86_64_RIP
+ UNW_X86_64_RIP,
+ 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
};
HIDDEN void
--
1.7.4.1
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