From ea32a06ed4deab6073649c829f69aef2a72f0c70 Mon Sep 17 00:00:00 2001
From: pbrook <pbrook@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed, 11 Aug 2004 21:02:47 +0000
Subject: [PATCH] * config/arm/arm-protos.h (arm_finalize_pic) Rename
... (arm_load_pic_register): ... to this. * config/arm/arm.c
(arm_finalize_pic): Rename ... (arm_load_pic_register): ... to this.
Always output insns at the current location. Load via low reg in thumb
mode. (arm_expand_prologue): Call arm_load_pic_register.
(thumb_expand_prologue): Ditto. * config/arm/arm.h (FINALIZE_PIC):
Remove. * config/arm/arm.md (builtin_setjmp_receiver): Call
arm_load_pic_register.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@85820 138bc75d-0d04-0410-961f-82ee72b054a4
---
gcc/ChangeLog | 13 +++++++++++
gcc/config/arm/arm-protos.h | 2 +-
gcc/config/arm/arm.c | 44 +++++++++++++++++++++++--------------
gcc/config/arm/arm.h | 2 --
gcc/config/arm/arm.md | 2 +-
5 files changed, 43 insertions(+), 20 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 55ceca11af7c..b3aa2f3cf072 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,16 @@
+2004-08-11 Paul Brook <paul@codesourcery.com>
+
+ * config/arm/arm-protos.h (arm_finalize_pic) Rename ...
+ (arm_load_pic_register): ... to this.
+ * config/arm/arm.c (arm_finalize_pic): Rename ...
+ (arm_load_pic_register): ... to this. Always output insns at the
+ current location. Load via low reg in thumb mode.
+ (arm_expand_prologue): Call arm_load_pic_register.
+ (thumb_expand_prologue): Ditto.
+ * config/arm/arm.h (FINALIZE_PIC): Remove.
+ * config/arm/arm.md (builtin_setjmp_receiver): Call
+ arm_load_pic_register.
+
2004-08-11 Paul Brook <paul@codesourcery.com>
* arm.c (thumb_force_lr_save): Add prototype.
diff --git a/gcc/config/arm/arm-protos.h b/gcc/config/arm/arm-protos.h
index 2f361cd63627..b6b2fc4d8163 100644
--- a/gcc/config/arm/arm-protos.h
+++ b/gcc/config/arm/arm-protos.h
@@ -27,7 +27,7 @@
extern void arm_override_options (void);
extern int use_return_insn (int, rtx);
extern int arm_regno_class (int);
-extern void arm_finalize_pic (int);
+extern void arm_load_pic_register (void);
extern int arm_volatile_func (void);
extern const char *arm_output_epilogue (rtx);
extern void arm_expand_prologue (void);
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 41c27efa9110..8493af03227a 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -3012,16 +3012,14 @@ thumb_find_work_register (int live_regs_mask)
abort ();
}
-/* Generate code to load the PIC register. PROLOGUE is true if
- called from arm_expand_prologue (in which case we want the
- generated insns at the start of the function); false if called
- by an exception receiver that needs the PIC register reloaded
- (in which case the insns are just dumped at the current location). */
+
+/* Generate code to load the PIC register. */
+
void
-arm_finalize_pic (int prologue ATTRIBUTE_UNUSED)
+arm_load_pic_register (void)
{
#ifndef AOF_ASSEMBLER
- rtx l1, pic_tmp, pic_tmp2, seq, pic_rtx;
+ rtx l1, pic_tmp, pic_tmp2, pic_rtx;
rtx global_offset_table;
if (current_function_uses_pic_offset_table == 0 || TARGET_SINGLE_PIC_BASE)
@@ -3030,7 +3028,6 @@ arm_finalize_pic (int prologue ATTRIBUTE_UNUSED)
if (!flag_pic)
abort ();
- start_sequence ();
l1 = gen_label_rtx ();
global_offset_table = gen_rtx_SYMBOL_REF (Pmode, "_GLOBAL_OFFSET_TABLE_");
@@ -3052,23 +3049,29 @@ arm_finalize_pic (int prologue ATTRIBUTE_UNUSED)
}
else
{
- emit_insn (gen_pic_load_addr_thumb (pic_offset_table_rtx, pic_rtx));
+ if (REGNO (pic_offset_table_rtx) > LAST_LO_REGNUM)
+ {
+ int reg;
+
+ /* We will have pushed the pic register, so should always be
+ able to find a work register. */
+ reg = thumb_find_work_register (thumb_compute_save_reg_mask ());
+ pic_tmp = gen_rtx_REG (SImode, reg);
+ emit_insn (gen_pic_load_addr_thumb (pic_tmp, pic_rtx));
+ emit_insn (gen_movsi (pic_offset_table_rtx, pic_tmp));
+ }
+ else
+ emit_insn (gen_pic_load_addr_thumb (pic_offset_table_rtx, pic_rtx));
emit_insn (gen_pic_add_dot_plus_four (pic_offset_table_rtx, l1));
}
- seq = get_insns ();
- end_sequence ();
- if (prologue)
- emit_insn_after (seq, get_insns ());
- else
- emit_insn (seq);
-
/* Need to emit this whether or not we obey regdecls,
since setjmp/longjmp can cause life info to screw up. */
emit_insn (gen_rtx_USE (VOIDmode, pic_offset_table_rtx));
#endif /* AOF_ASSEMBLER */
}
+
/* Return nonzero if X is valid as an ARM state addressing register. */
static int
arm_address_register_rtx_p (rtx x, int strict_p)
@@ -10693,6 +10696,10 @@ arm_expand_prologue (void)
hard_frame_pointer_rtx));
}
+
+ if (flag_pic)
+ arm_load_pic_register ();
+
/* If we are profiling, make sure no instructions are scheduled before
the call to mcount. Similarly if the user has requested no
scheduling in the prolog. */
@@ -13357,6 +13364,11 @@ thumb_expand_prologue (void)
return;
}
+ /* Load the pic recister before setting the frame pointer, so we can use r7
+ as a temporary work register. */
+ if (flag_pic)
+ arm_load_pic_register ();
+
offsets = arm_get_frame_offsets ();
if (frame_pointer_needed)
diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h
index c3ea52a70e81..ec924105e1a0 100644
--- a/gcc/config/arm/arm.h
+++ b/gcc/config/arm/arm.h
@@ -2277,8 +2277,6 @@ extern const char * arm_pic_register_string;
data addresses in memory. */
#define PIC_OFFSET_TABLE_REGNUM arm_pic_register
-#define FINALIZE_PIC arm_finalize_pic (1)
-
/* We can't directly access anything that contains a symbol,
nor can we indirect via the constant pool. */
#define LEGITIMATE_PIC_OPERAND_P(X) \
diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 88aea2776868..f19f8cd4ebeb 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -4462,7 +4462,7 @@
"flag_pic"
"
{
- arm_finalize_pic (0);
+ arm_load_pic_register ();
DONE;
}")
--
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