diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc-4.9/0055-dwarf-reg-processing-helper.patch')
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-4.9/0055-dwarf-reg-processing-helper.patch | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0055-dwarf-reg-processing-helper.patch b/meta/recipes-devtools/gcc/gcc-4.9/0055-dwarf-reg-processing-helper.patch deleted file mode 100644 index 557dab0f31..0000000000 --- a/meta/recipes-devtools/gcc/gcc-4.9/0055-dwarf-reg-processing-helper.patch +++ /dev/null @@ -1,148 +0,0 @@ -From 4fd39f1329379e00f958394adde6be96f0caf21f Mon Sep 17 00:00:00 2001 -From: hainque <hainque@138bc75d-0d04-0410-961f-82ee72b054a4> -Date: Fri, 5 Dec 2014 16:53:22 +0000 -Subject: [PATCH] 2014-12-05 Olivier Hainque <hainque@adacore.com> - - * dwarf2cfi.c (init_one_dwarf_reg_size): New helper, processing - one particular reg for expand_builtin_init_dwarf_reg_sizes. - (expand_builtin_init_dwarf_reg_sizes): Rework to use helper and - account for dwarf register spans. - - - -git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218428 138bc75d-0d04-0410-961f-82ee72b054a4 - -Signed-off-by: Khem Raj <raj.khem@gmail.com> -Upstream-Status: Backport [gcc 5.0] - ---- - gcc/ChangeLog | 7 +++++ - gcc/dwarf2cfi.c | 98 +++++++++++++++++++++++++++++++++++++++++++++------------ - 2 files changed, 85 insertions(+), 20 deletions(-) - -Index: gcc-4.9.2/gcc/dwarf2cfi.c -=================================================================== ---- gcc-4.9.2.orig/gcc/dwarf2cfi.c -+++ gcc-4.9.2/gcc/dwarf2cfi.c -@@ -252,7 +252,59 @@ init_return_column_size (enum machine_mo - gen_int_mode (size, mode)); - } - --/* Generate code to initialize the register size table. */ -+/* Datastructure used by expand_builtin_init_dwarf_reg_sizes and -+ init_one_dwarf_reg_size to communicate on what has been done by the -+ latter. */ -+ -+typedef struct -+{ -+ /* Whether the dwarf return column was initialized. */ -+ bool wrote_return_column; -+ -+ /* For each hard register REGNO, whether init_one_dwarf_reg_size -+ was given REGNO to process already. */ -+ bool processed_regno [FIRST_PSEUDO_REGISTER]; -+ -+} init_one_dwarf_reg_state; -+ -+/* Helper for expand_builtin_init_dwarf_reg_sizes. Generate code to -+ initialize the dwarf register size table entry corresponding to register -+ REGNO in REGMODE. TABLE is the table base address, SLOTMODE is the mode to -+ use for the size entry to initialize, and INIT_STATE is the communication -+ datastructure conveying what we're doing to our caller. */ -+ -+static -+void init_one_dwarf_reg_size (int regno, machine_mode regmode, -+ rtx table, machine_mode slotmode, -+ init_one_dwarf_reg_state *init_state) -+{ -+ const unsigned int dnum = DWARF_FRAME_REGNUM (regno); -+ const unsigned int rnum = DWARF2_FRAME_REG_OUT (dnum, 1); -+ -+ const HOST_WIDE_INT slotoffset = rnum * GET_MODE_SIZE (slotmode); -+ const HOST_WIDE_INT regsize = GET_MODE_SIZE (regmode); -+ -+ init_state->processed_regno[regno] = true; -+ -+ if (rnum >= DWARF_FRAME_REGISTERS) -+ return; -+ -+ if (dnum == DWARF_FRAME_RETURN_COLUMN) -+ { -+ if (regmode == VOIDmode) -+ return; -+ init_state->wrote_return_column = true; -+ } -+ -+ if (slotoffset < 0) -+ return; -+ -+ emit_move_insn (adjust_address (table, slotmode, slotoffset), -+ gen_int_mode (regsize, slotmode)); -+} -+ -+/* Generate code to initialize the dwarf register size table located -+ at the provided ADDRESS. */ - - void - expand_builtin_init_dwarf_reg_sizes (tree address) -@@ -261,35 +313,40 @@ expand_builtin_init_dwarf_reg_sizes (tre - enum machine_mode mode = TYPE_MODE (char_type_node); - rtx addr = expand_normal (address); - rtx mem = gen_rtx_MEM (BLKmode, addr); -- bool wrote_return_column = false; -+ -+ init_one_dwarf_reg_state init_state; -+ -+ memset ((char *)&init_state, 0, sizeof (init_state)); - - for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) - { -- unsigned int dnum = DWARF_FRAME_REGNUM (i); -- unsigned int rnum = DWARF2_FRAME_REG_OUT (dnum, 1); -- -- if (rnum < DWARF_FRAME_REGISTERS) -- { -- HOST_WIDE_INT offset = rnum * GET_MODE_SIZE (mode); -- HOST_WIDE_INT size; -- enum machine_mode save_mode = targetm.dwarf_frame_reg_mode (i); -+ machine_mode save_mode; -+ rtx span; - -- if (dnum == DWARF_FRAME_RETURN_COLUMN) -+ /* No point in processing a register multiple times. This could happen -+ with register spans, e.g. when a reg is first processed as a piece of -+ a span, then as a register on its own later on. */ -+ -+ if (init_state.processed_regno[i]) -+ continue; -+ -+ save_mode = targetm.dwarf_frame_reg_mode (i); -+ span = targetm.dwarf_register_span (gen_rtx_REG (save_mode, i)); -+ if (!span) -+ init_one_dwarf_reg_size (i, save_mode, mem, mode, &init_state); -+ else -+ { -+ for (int si = 0; si < XVECLEN (span, 0); si++) - { -- if (save_mode == VOIDmode) -- continue; -- wrote_return_column = true; -- } -- size = GET_MODE_SIZE (save_mode); -- if (offset < 0) -- continue; -+ rtx reg = XVECEXP (span, 0, si); -+ init_one_dwarf_reg_size -+ (REGNO (reg), GET_MODE (reg), mem, mode, &init_state); -+ } - -- emit_move_insn (adjust_address (mem, mode, offset), -- gen_int_mode (size, mode)); - } - } - -- if (!wrote_return_column) -+ if (!init_state.wrote_return_column) - init_return_column_size (mode, mem, DWARF_FRAME_RETURN_COLUMN); - - #ifdef DWARF_ALT_FRAME_RETURN_COLUMN |