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-rw-r--r--community/gcc6/0001-i386-Move-struct-ix86_frame-to-machine_function.patch241
1 files changed, 0 insertions, 241 deletions
diff --git a/community/gcc6/0001-i386-Move-struct-ix86_frame-to-machine_function.patch b/community/gcc6/0001-i386-Move-struct-ix86_frame-to-machine_function.patch
deleted file mode 100644
index ecec2bad66e..00000000000
--- a/community/gcc6/0001-i386-Move-struct-ix86_frame-to-machine_function.patch
+++ /dev/null
@@ -1,241 +0,0 @@
-From b1d2df5090abc9202a7bf2d224ac90de22908d21 Mon Sep 17 00:00:00 2001
-From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
-Date: Mon, 15 Jan 2018 11:27:24 +0000
-Subject: [PATCH 01/13] i386: Move struct ix86_frame to machine_function
-
-Make ix86_frame available to i386 code generation. This is needed to
-backport the patch set of -mindirect-branch= to mitigate variant #2 of
-the speculative execution vulnerabilities on x86 processors identified
-by CVE-2017-5715, aka Spectre.
-
- Backport from mainline
- 2017-06-01 Bernd Edlinger <bernd.edlinger@hotmail.de>
-
- * config/i386/i386.c (ix86_frame): Moved to ...
- * config/i386/i386.h (ix86_frame): Here.
- (machine_function): Add frame.
- * config/i386/i386.c (ix86_compute_frame_layout): Repace the
- frame argument with &cfun->machine->frame.
- (ix86_can_use_return_insn_p): Don't pass &frame to
- ix86_compute_frame_layout. Copy frame from cfun->machine->frame.
- (ix86_can_eliminate): Likewise.
- (ix86_expand_prologue): Likewise.
- (ix86_expand_epilogue): Likewise.
- (ix86_expand_split_stack_prologue): Likewise.
----
- gcc/config/i386/i386.c | 68 ++++++++++----------------------------------------
- gcc/config/i386/i386.h | 53 ++++++++++++++++++++++++++++++++++++++-
- 2 files changed, 65 insertions(+), 56 deletions(-)
-
-diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
-index 8b5faac5129..a1ff32b648b 100644
---- a/gcc/config/i386/i386.c
-+++ b/gcc/config/i386/i386.c
-@@ -2434,53 +2434,6 @@ struct GTY(()) stack_local_entry {
- struct stack_local_entry *next;
- };
-
--/* Structure describing stack frame layout.
-- Stack grows downward:
--
-- [arguments]
-- <- ARG_POINTER
-- saved pc
--
-- saved static chain if ix86_static_chain_on_stack
--
-- saved frame pointer if frame_pointer_needed
-- <- HARD_FRAME_POINTER
-- [saved regs]
-- <- regs_save_offset
-- [padding0]
--
-- [saved SSE regs]
-- <- sse_regs_save_offset
-- [padding1] |
-- | <- FRAME_POINTER
-- [va_arg registers] |
-- |
-- [frame] |
-- |
-- [padding2] | = to_allocate
-- <- STACK_POINTER
-- */
--struct ix86_frame
--{
-- int nsseregs;
-- int nregs;
-- int va_arg_size;
-- int red_zone_size;
-- int outgoing_arguments_size;
--
-- /* The offsets relative to ARG_POINTER. */
-- HOST_WIDE_INT frame_pointer_offset;
-- HOST_WIDE_INT hard_frame_pointer_offset;
-- HOST_WIDE_INT stack_pointer_offset;
-- HOST_WIDE_INT hfp_save_offset;
-- HOST_WIDE_INT reg_save_offset;
-- HOST_WIDE_INT sse_reg_save_offset;
--
-- /* When save_regs_using_mov is set, emit prologue using
-- move instead of push instructions. */
-- bool save_regs_using_mov;
--};
--
- /* Which cpu are we scheduling for. */
- enum attr_cpu ix86_schedule;
-
-@@ -2572,7 +2525,7 @@ static unsigned int ix86_function_arg_boundary (machine_mode,
- const_tree);
- static rtx ix86_static_chain (const_tree, bool);
- static int ix86_function_regparm (const_tree, const_tree);
--static void ix86_compute_frame_layout (struct ix86_frame *);
-+static void ix86_compute_frame_layout (void);
- static bool ix86_expand_vector_init_one_nonzero (bool, machine_mode,
- rtx, rtx, int);
- static void ix86_add_new_builtins (HOST_WIDE_INT);
-@@ -10944,7 +10897,8 @@ ix86_can_use_return_insn_p (void)
- if (crtl->args.pops_args && crtl->args.size >= 32768)
- return 0;
-
-- ix86_compute_frame_layout (&frame);
-+ ix86_compute_frame_layout ();
-+ frame = cfun->machine->frame;
- return (frame.stack_pointer_offset == UNITS_PER_WORD
- && (frame.nregs + frame.nsseregs) == 0);
- }
-@@ -11355,8 +11309,8 @@ ix86_can_eliminate (const int from, const int to)
- HOST_WIDE_INT
- ix86_initial_elimination_offset (int from, int to)
- {
-- struct ix86_frame frame;
-- ix86_compute_frame_layout (&frame);
-+ ix86_compute_frame_layout ();
-+ struct ix86_frame frame = cfun->machine->frame;
-
- if (from == ARG_POINTER_REGNUM && to == HARD_FRAME_POINTER_REGNUM)
- return frame.hard_frame_pointer_offset;
-@@ -11395,8 +11349,9 @@ ix86_builtin_setjmp_frame_value (void)
- /* Fill structure ix86_frame about frame of currently computed function. */
-
- static void
--ix86_compute_frame_layout (struct ix86_frame *frame)
-+ix86_compute_frame_layout (void)
- {
-+ struct ix86_frame *frame = &cfun->machine->frame;
- unsigned HOST_WIDE_INT stack_alignment_needed;
- HOST_WIDE_INT offset;
- unsigned HOST_WIDE_INT preferred_alignment;
-@@ -12702,7 +12657,8 @@ ix86_expand_prologue (void)
- m->fs.sp_offset = INCOMING_FRAME_SP_OFFSET;
- m->fs.sp_valid = true;
-
-- ix86_compute_frame_layout (&frame);
-+ ix86_compute_frame_layout ();
-+ frame = m->frame;
-
- if (!TARGET_64BIT && ix86_function_ms_hook_prologue (current_function_decl))
- {
-@@ -13379,7 +13335,8 @@ ix86_expand_epilogue (int style)
- bool using_drap;
-
- ix86_finalize_stack_realign_flags ();
-- ix86_compute_frame_layout (&frame);
-+ ix86_compute_frame_layout ();
-+ frame = m->frame;
-
- m->fs.sp_valid = (!frame_pointer_needed
- || (crtl->sp_is_unchanging
-@@ -13876,7 +13833,8 @@ ix86_expand_split_stack_prologue (void)
- gcc_assert (flag_split_stack && reload_completed);
-
- ix86_finalize_stack_realign_flags ();
-- ix86_compute_frame_layout (&frame);
-+ ix86_compute_frame_layout ();
-+ frame = cfun->machine->frame;
- allocate = frame.stack_pointer_offset - INCOMING_FRAME_SP_OFFSET;
-
- /* This is the label we will branch to if we have enough stack
-diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
-index 8113f83c7fd..54144166172 100644
---- a/gcc/config/i386/i386.h
-+++ b/gcc/config/i386/i386.h
-@@ -2427,9 +2427,56 @@ enum avx_u128_state
-
- #define FASTCALL_PREFIX '@'
-
-+#ifndef USED_FOR_TARGET
-+/* Structure describing stack frame layout.
-+ Stack grows downward:
-+
-+ [arguments]
-+ <- ARG_POINTER
-+ saved pc
-+
-+ saved static chain if ix86_static_chain_on_stack
-+
-+ saved frame pointer if frame_pointer_needed
-+ <- HARD_FRAME_POINTER
-+ [saved regs]
-+ <- regs_save_offset
-+ [padding0]
-+
-+ [saved SSE regs]
-+ <- sse_regs_save_offset
-+ [padding1] |
-+ | <- FRAME_POINTER
-+ [va_arg registers] |
-+ |
-+ [frame] |
-+ |
-+ [padding2] | = to_allocate
-+ <- STACK_POINTER
-+ */
-+struct GTY(()) ix86_frame
-+{
-+ int nsseregs;
-+ int nregs;
-+ int va_arg_size;
-+ int red_zone_size;
-+ int outgoing_arguments_size;
-+
-+ /* The offsets relative to ARG_POINTER. */
-+ HOST_WIDE_INT frame_pointer_offset;
-+ HOST_WIDE_INT hard_frame_pointer_offset;
-+ HOST_WIDE_INT stack_pointer_offset;
-+ HOST_WIDE_INT hfp_save_offset;
-+ HOST_WIDE_INT reg_save_offset;
-+ HOST_WIDE_INT sse_reg_save_offset;
-+
-+ /* When save_regs_using_mov is set, emit prologue using
-+ move instead of push instructions. */
-+ bool save_regs_using_mov;
-+};
-+
- /* Machine specific frame tracking during prologue/epilogue generation. */
-
--#ifndef USED_FOR_TARGET
- struct GTY(()) machine_frame_state
- {
- /* This pair tracks the currently active CFA as reg+offset. When reg
-@@ -2475,6 +2522,9 @@ struct GTY(()) machine_function {
- int varargs_fpr_size;
- int optimize_mode_switching[MAX_386_ENTITIES];
-
-+ /* Cached initial frame layout for the current function. */
-+ struct ix86_frame frame;
-+
- /* Number of saved registers USE_FAST_PROLOGUE_EPILOGUE
- has been computed for. */
- int use_fast_prologue_epilogue_nregs;
-@@ -2554,6 +2604,7 @@ struct GTY(()) machine_function {
- #define ix86_current_function_calls_tls_descriptor \
- (ix86_tls_descriptor_calls_expanded_in_cfun && df_regs_ever_live_p (SP_REG))
- #define ix86_static_chain_on_stack (cfun->machine->static_chain_on_stack)
-+#define ix86_red_zone_size (cfun->machine->frame.red_zone_size)
-
- /* Control behavior of x86_file_start. */
- #define X86_FILE_START_VERSION_DIRECTIVE false
---
-2.16.3
-
generated by cgit v1.2.3 (git 2.41.0) at 2024-04-24 23:20:54 +0000