From: Richard Earnshaw <rearnsha@arm.com>
To: <binutils@sourceware.org>
Cc: <nickc@redhat.com>, Richard Earnshaw <rearnsha@arm.com>
Subject: [PATCH 06/11] arm: change default FPUs from FPA to none
Date: Mon, 3 Jun 2024 12:49:07 +0100 [thread overview]
Message-ID: <20240603114912.4065598-7-rearnsha@arm.com> (raw)
In-Reply-To: <20240603114912.4065598-1-rearnsha@arm.com>
[-- Attachment #1: Type: text/plain, Size: 381 bytes --]
Change the cases where the default FPU was FPA to none. This should
ensure that any code that used settings to pick the floating-point
order will not silently produce a different output. The options that
explicitly set the FPA remain for the moment.
---
gas/config/tc-arm.c | 125 ++++++++++++++++++++++----------------------
1 file changed, 63 insertions(+), 62 deletions(-)
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: 0006-arm-change-default-FPUs-from-FPA-to-none.patch --]
[-- Type: text/x-patch; name="0006-arm-change-default-FPUs-from-FPA-to-none.patch", Size: 8965 bytes --]
diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 1ba7bb31ac5..12610fd8766 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -118,19 +118,20 @@ static bool out_of_range_p (offsetT value, offsetT bits)
#ifndef FPU_DEFAULT
# ifdef TE_LINUX
-# define FPU_DEFAULT FPU_ARCH_FPA
+# define FPU_DEFAULT FPU_NONE
# elif defined (TE_NetBSD)
# ifdef OBJ_ELF
# define FPU_DEFAULT FPU_ARCH_SOFTVFP /* Soft-float, but VFP order. */
# else
/* Legacy a.out format. */
-# define FPU_DEFAULT FPU_ARCH_FPA /* Soft-float, but FPA order. */
+# define FPU_DEFAULT FPU_NONE /* Soft-float, no FPU. */
# endif
# elif defined (TE_VXWORKS)
# define FPU_DEFAULT FPU_ARCH_SOFTVFP /* Soft-float, VFP order. */
# else
- /* For backwards compatibility, default to FPA. */
-# define FPU_DEFAULT FPU_ARCH_FPA
+ /* For backwards compatibility, default to no-fpu so that we don't
+ get silent code changes of FP literal data. */
+# define FPU_DEFAULT FPU_NONE
# endif
#endif /* ifndef FPU_DEFAULT */
@@ -31247,142 +31248,142 @@ static const struct arm_cpu_option_table arm_cpus[] =
{
ARM_CPU_OPT ("all", NULL, ARM_ANY,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm1", NULL, ARM_ARCH_V1,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm2", NULL, ARM_ARCH_V2,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm250", NULL, ARM_ARCH_V2S,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm3", NULL, ARM_ARCH_V2S,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm6", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm60", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm600", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm610", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm620", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm7", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm7m", NULL, ARM_ARCH_V3M,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm7d", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm7dm", NULL, ARM_ARCH_V3M,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm7di", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm7dmi", NULL, ARM_ARCH_V3M,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm70", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm700", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm700i", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm710", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm710t", NULL, ARM_ARCH_V4T,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm720", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm720t", NULL, ARM_ARCH_V4T,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm740t", NULL, ARM_ARCH_V4T,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm710c", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm7100", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm7500", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm7500fe", NULL, ARM_ARCH_V3,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm7t", NULL, ARM_ARCH_V4T,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm7tdmi", NULL, ARM_ARCH_V4T,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm7tdmi-s", NULL, ARM_ARCH_V4T,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm8", NULL, ARM_ARCH_V4,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm810", NULL, ARM_ARCH_V4,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("strongarm", NULL, ARM_ARCH_V4,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("strongarm1", NULL, ARM_ARCH_V4,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("strongarm110", NULL, ARM_ARCH_V4,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("strongarm1100", NULL, ARM_ARCH_V4,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("strongarm1110", NULL, ARM_ARCH_V4,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm9", NULL, ARM_ARCH_V4T,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm920", "ARM920T", ARM_ARCH_V4T,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm920t", NULL, ARM_ARCH_V4T,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm922t", NULL, ARM_ARCH_V4T,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm940t", NULL, ARM_ARCH_V4T,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("arm9tdmi", NULL, ARM_ARCH_V4T,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("fa526", NULL, ARM_ARCH_V4,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
ARM_CPU_OPT ("fa626", NULL, ARM_ARCH_V4,
ARM_ARCH_NONE,
- FPU_ARCH_FPA),
+ FPU_NONE),
/* For V5 or later processors we default to using VFP; but the user
should really set the FPU type explicitly. */
@@ -31654,7 +31655,7 @@ static const struct arm_cpu_option_table arm_cpus[] =
/* Maverick extensions are no-longer supported, but we can still
recognize the CPU name and treat it like an Arm920T. */
ARM_CPU_OPT ("ep9312", "ARM920T", ARM_ARCH_V4T,
- ARM_ARCH_NONE, FPU_ARCH_FPA),
+ ARM_ARCH_NONE, FPU_NONE),
/* Marvell processors. */
ARM_CPU_OPT ("marvell-pj4", NULL, ARM_ARCH_V7A,
@@ -31963,17 +31964,17 @@ static const struct arm_ext_table armv8r_ext_table[] =
static const struct arm_arch_option_table arm_archs[] =
{
- ARM_ARCH_OPT ("all", ARM_ANY, FPU_ARCH_FPA),
- ARM_ARCH_OPT ("armv1", ARM_ARCH_V1, FPU_ARCH_FPA),
- ARM_ARCH_OPT ("armv2", ARM_ARCH_V2, FPU_ARCH_FPA),
- ARM_ARCH_OPT ("armv2a", ARM_ARCH_V2S, FPU_ARCH_FPA),
- ARM_ARCH_OPT ("armv2s", ARM_ARCH_V2S, FPU_ARCH_FPA),
- ARM_ARCH_OPT ("armv3", ARM_ARCH_V3, FPU_ARCH_FPA),
- ARM_ARCH_OPT ("armv3m", ARM_ARCH_V3M, FPU_ARCH_FPA),
- ARM_ARCH_OPT ("armv4", ARM_ARCH_V4, FPU_ARCH_FPA),
- ARM_ARCH_OPT ("armv4xm", ARM_ARCH_V4xM, FPU_ARCH_FPA),
- ARM_ARCH_OPT ("armv4t", ARM_ARCH_V4T, FPU_ARCH_FPA),
- ARM_ARCH_OPT ("armv4txm", ARM_ARCH_V4TxM, FPU_ARCH_FPA),
+ ARM_ARCH_OPT ("all", ARM_ANY, FPU_NONE),
+ ARM_ARCH_OPT ("armv1", ARM_ARCH_V1, FPU_NONE),
+ ARM_ARCH_OPT ("armv2", ARM_ARCH_V2, FPU_NONE),
+ ARM_ARCH_OPT ("armv2a", ARM_ARCH_V2S, FPU_NONE),
+ ARM_ARCH_OPT ("armv2s", ARM_ARCH_V2S, FPU_NONE),
+ ARM_ARCH_OPT ("armv3", ARM_ARCH_V3, FPU_NONE),
+ ARM_ARCH_OPT ("armv3m", ARM_ARCH_V3M, FPU_NONE),
+ ARM_ARCH_OPT ("armv4", ARM_ARCH_V4, FPU_NONE),
+ ARM_ARCH_OPT ("armv4xm", ARM_ARCH_V4xM, FPU_NONE),
+ ARM_ARCH_OPT ("armv4t", ARM_ARCH_V4T, FPU_NONE),
+ ARM_ARCH_OPT ("armv4txm", ARM_ARCH_V4TxM, FPU_NONE),
ARM_ARCH_OPT ("armv5", ARM_ARCH_V5, FPU_ARCH_SOFTVFP),
ARM_ARCH_OPT ("armv5t", ARM_ARCH_V5T, FPU_ARCH_SOFTVFP),
ARM_ARCH_OPT ("armv5txm", ARM_ARCH_V5TxM, FPU_ARCH_SOFTVFP),
next prev parent reply other threads:[~2024-06-03 11:49 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-03 11:49 [PATCH 00/11] arm: Remove FPA support from gas/binutils Richard Earnshaw
2024-06-03 11:49 ` [PATCH 01/11] arm: remove FPA related tests Richard Earnshaw
2024-06-03 11:49 ` [PATCH 02/11] arm: rename FPU_ARCH_VFP to FPU_ARCH_SOFTVFP Richard Earnshaw
2024-06-03 11:49 ` [PATCH 03/11] arm: default to softvfp on armv6 or later cores Richard Earnshaw
2024-06-03 11:49 ` [PATCH 04/11] arm: adjust FPU selection logic Richard Earnshaw
2024-06-03 11:49 ` [PATCH 05/11] arm: redirect fp constant data directives through a wrapper Richard Earnshaw
2024-06-03 11:49 ` Richard Earnshaw [this message]
2024-06-03 11:49 ` [PATCH 07/11] arm: remove options to select the FPA Richard Earnshaw
2024-06-03 11:49 ` [PATCH 08/11] arm: remove FPA instructions from assembler Richard Earnshaw
2024-06-03 11:49 ` [PATCH 09/11] arm: remove disassembly support for the FPA co-processor Richard Earnshaw
2024-06-03 11:49 ` [PATCH 10/11] arm: minor documentation cleanup given removal of FPA Richard Earnshaw
2024-06-03 11:49 ` [PATCH 11/11] NEWS: arm: note that FPA support has been removed Richard Earnshaw
2024-06-03 15:14 [PATCH 00/11] [resend] arm: Remove FPA support from gas/binutils Richard Earnshaw
2024-06-03 15:15 ` [PATCH 06/11] arm: change default FPUs from FPA to none Richard Earnshaw
2024-06-04 11:56 [PATCH 00/11] [2nd resend] arm: Remove FPA support from gas/binutils Richard Earnshaw
2024-06-04 11:56 ` [PATCH 06/11] arm: change default FPUs from FPA to none Richard Earnshaw
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