diff options
-rw-r--r-- | target/linux/patches/4.8.6/microblaze-sigaltstack.patch | 12 | ||||
-rw-r--r-- | toolchain/gcc/patches/5.4.0/microblaze-enable-dwarf-eh-support.patch | 166 |
2 files changed, 178 insertions, 0 deletions
diff --git a/target/linux/patches/4.8.6/microblaze-sigaltstack.patch b/target/linux/patches/4.8.6/microblaze-sigaltstack.patch new file mode 100644 index 000000000..c4064e8b9 --- /dev/null +++ b/target/linux/patches/4.8.6/microblaze-sigaltstack.patch @@ -0,0 +1,12 @@ +diff -Nur linux-4.8.5.orig/arch/microblaze/kernel/syscall_table.S linux-4.8.5/arch/microblaze/kernel/syscall_table.S +--- linux-4.8.5.orig/arch/microblaze/kernel/syscall_table.S 2016-10-28 09:51:31.000000000 +0200 ++++ linux-4.8.5/arch/microblaze/kernel/syscall_table.S 2016-11-01 17:36:41.021129191 +0100 +@@ -186,7 +186,7 @@ + .long sys_getcwd + .long sys_capget + .long sys_capset /* 185 */ +- .long sys_ni_syscall /* sigaltstack */ ++ .long sys_sigaltstack + .long sys_sendfile + .long sys_ni_syscall /* reserved for streams1 */ + .long sys_ni_syscall /* reserved for streams2 */ diff --git a/toolchain/gcc/patches/5.4.0/microblaze-enable-dwarf-eh-support.patch b/toolchain/gcc/patches/5.4.0/microblaze-enable-dwarf-eh-support.patch new file mode 100644 index 000000000..9d29090a2 --- /dev/null +++ b/toolchain/gcc/patches/5.4.0/microblaze-enable-dwarf-eh-support.patch @@ -0,0 +1,166 @@ +Fetched from Xilinx gcc git at https://github.com/Xilinx/gcc + +From 23c35173490ac2d6348a668dfc9c1a6eb62171f2 Mon Sep 17 00:00:00 2001 +From: "Edgar E. Iglesias" <edgar.iglesias@gmail.com> +Date: Mon, 18 Jun 2012 20:18:13 +0200 +Subject: [PATCH] [Patch, microblaze]: Enable DWARF exception handling support. + +Changelog + +2013-03-18 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 +@@ -1959,6 +1959,11 @@ + if (frame_pointer_needed && (regno == HARD_FRAME_POINTER_REGNUM)) + return 1; + ++ if (crtl->calls_eh_return ++ && regno == MB_ABI_SUB_RETURN_ADDR_REGNUM) { ++ return 1; ++ } ++ + if (!crtl->is_leaf) + { + if (regno == MB_ABI_SUB_RETURN_ADDR_REGNUM) +@@ -1986,6 +1991,13 @@ + return 1; + } + ++ if (crtl->calls_eh_return ++ && (regno == EH_RETURN_DATA_REGNO (0) ++ || regno == EH_RETURN_DATA_REGNO (1))) ++ { ++ return 1; ++ } ++ + return 0; + } + +@@ -3067,6 +3079,12 @@ + emit_insn (gen_addsi3 (stack_pointer_rtx, stack_pointer_rtx, fsiz_rtx)); + } + ++ if (crtl->calls_eh_return) ++ emit_insn (gen_addsi3 (stack_pointer_rtx, ++ stack_pointer_rtx, ++ gen_rtx_raw_REG (SImode, ++ MB_EH_STACKADJ_REGNUM))); ++ + emit_jump_insn (gen_return_internal (gen_rtx_REG (Pmode, GP_REG_FIRST + + MB_ABI_SUB_RETURN_ADDR_REGNUM))); + } +@@ -3364,10 +3382,13 @@ + if (count != 0) + return NULL_RTX; + +- return gen_rtx_PLUS (Pmode, +- get_hard_reg_initial_val (Pmode, +- MB_ABI_SUB_RETURN_ADDR_REGNUM), +- GEN_INT (8)); ++ return get_hard_reg_initial_val (Pmode, ++ MB_ABI_SUB_RETURN_ADDR_REGNUM); ++} ++ ++void microblaze_eh_return (rtx op0) ++{ ++ emit_insn (gen_movsi(gen_rtx_MEM(Pmode, stack_pointer_rtx), op0)); + } + + /* Queue an .ident string in the queue of top-level asm statements. +Index: b/gcc/config/microblaze/microblaze.h +=================================================================== +--- a/gcc/config/microblaze/microblaze.h ++++ b/gcc/config/microblaze/microblaze.h +@@ -184,6 +184,21 @@ + #define INCOMING_RETURN_ADDR_RTX \ + gen_rtx_REG (VOIDmode, GP_REG_FIRST + MB_ABI_SUB_RETURN_ADDR_REGNUM) + ++/* Specifies the offset from INCOMING_RETURN_ADDR_RTX and the actual return PC. */ ++#define RETURN_ADDR_OFFSET (8) ++ ++/* Describe how we implement __builtin_eh_return. */ ++#define EH_RETURN_DATA_REGNO(N) (((N) < 2) ? MB_ABI_FIRST_ARG_REGNUM + (N) : INVALID_REGNUM) ++ ++#define MB_EH_STACKADJ_REGNUM MB_ABI_INT_RETURN_VAL2_REGNUM ++#define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, MB_EH_STACKADJ_REGNUM) ++ ++/* Select a format to encode pointers in exception handling data. CODE ++ is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is ++ true if the symbol may be affected by dynamic relocations. */ ++#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ ++ ((flag_pic || GLOBAL) ? DW_EH_PE_aligned : DW_EH_PE_absptr) ++ + /* Use DWARF 2 debugging information by default. */ + #define DWARF2_DEBUGGING_INFO + #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG +Index: b/gcc/config/microblaze/microblaze.md +=================================================================== +--- a/gcc/config/microblaze/microblaze.md ++++ b/gcc/config/microblaze/microblaze.md +@@ -2272,4 +2272,15 @@ + (set_attr "mode" "SI") + (set_attr "length" "4")]) + ++; This is used in compiling the unwind routines. ++(define_expand "eh_return" ++ [(use (match_operand 0 "general_operand" ""))] ++ "" ++ " ++{ ++ microblaze_eh_return(operands[0]); ++ DONE; ++}") ++ + (include "sync.md") ++ |