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committed bb4809e0678xxxxxxxxxx+#define EH_RETURN_DATA_REGNO(N) (((N) < 2) ? MB_ABI_FIRST_ARG_REGNUM + (N) : INVALID_REGNUM)Fetched from Xilinx gcc git at https://github.com/Xilinx/gccFrom 23c35173490ac2d6348a668dfc9c1a6eb62171f2 Mon Sep 17 00:00:00 2001From: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>Date: Mon, 18 Jun 2012 20:18:13 +0200Subject: [PATCH] [Patch, microblaze]: Enable DWARF exception handling support.Changelog2013-03-18 Edgar E. Iglesias <edgar.iglesias@xilinx.com> David Holsgrove <david.holsgrove@xilinx.com> * common/config/microblaze/microblaze-common.c: Remove TARGET_EXCEPT_UNWIND_INFO definition. * config/microblaze/microblaze-protos.h: Add microblaze_eh_return prototype. * gcc/config/microblaze/microblaze.c: (microblaze_must_save_register, microblaze_expand_epilogue, microblaze_return_addr): Handle calls_eh_return (microblaze_eh_return): New function. * gcc/config/microblaze/microblaze.h: Define RETURN_ADDR_OFFSET, EH_RETURN_DATA_REGNO, MB_EH_STACKADJ_REGNUM, EH_RETURN_STACKADJ_RTX, ASM_PREFERRED_EH_DATA_FORMAT * gcc/config/microblaze/microblaze.md: Define eh_return pattern.Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>--- gcc/common/config/microblaze/microblaze-common.c | 3 --- gcc/config/microblaze/microblaze-protos.h | 1 + gcc/config/microblaze/microblaze.c | 29 ++++++++++++++++++++---- gcc/config/microblaze/microblaze.h | 15 ++++++++++++ gcc/config/microblaze/microblaze.md | 11 +++++++++ 5 files changed, 52 insertions(+), 7 deletions(-)Index: b/gcc/common/config/microblaze/microblaze-common.c===================================================================--- a/gcc/common/config/microblaze/microblaze-common.c+++ b/gcc/common/config/microblaze/microblaze-common.c@@ -37,7 +37,4 @@ #undef TARGET_OPTION_OPTIMIZATION_TABLE #define TARGET_OPTION_OPTIMIZATION_TABLE microblaze_option_optimization_table-#undef TARGET_EXCEPT_UNWIND_INFO-#define TARGET_EXCEPT_UNWIND_INFO sjlj_except_unwind_info- struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;Index: b/gcc/config/microblaze/microblaze-protos.h===================================================================--- a/gcc/config/microblaze/microblaze-protos.h+++ b/gcc/config/microblaze/microblaze-protos.h@@ -56,6 +56,7 @@ extern int symbol_mentioned_p (rtx); extern int label_mentioned_p (rtx); extern bool microblaze_cannot_force_const_mem (machine_mode, rtx);+extern void microblaze_eh_return (rtx op0); #endif /* RTX_CODE */ /* Declare functions in microblaze-c.c. */Index: b/gcc/config/microblaze/microblaze.c===================================================================--- a/gcc/config/microblaze/microblaze.c+++ b/gcc/config/microblaze/microblaze.c