Delete backported patch which are present in 4.9.2 backport patched from upstream gcc trunk to fix [YOCTO #6824] Change-Id: Ia0067940471d4c5d9d62089bf6f18f3a9c2bfedd (From OE-Core rev: bdd8d7db74ad6927cd54f38c3e87246a36b2c319) Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
149 lines
4.8 KiB
Diff
149 lines
4.8 KiB
Diff
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
|