From 0120ae3031097eb092abd20bddac45f58762b1a9 Mon Sep 17 00:00:00 2001 From: avieira Date: Fri, 2 Dec 2016 15:22:43 +0000 Subject: Add support for ARMv8-M's Secure Extensions flag and intrinsics gcc/ChangeLog: 2016-12-02 Andre Vieira Thomas Preud'homme * config.gcc (extra_headers): Added arm_cmse.h. * config/arm/arm-arches.def (ARM_ARCH): (armv8-m): Add FL2_CMSE. (armv8-m.main): Likewise. (armv8-m.main+dsp): Likewise. * config/arm/arm-c.c (arm_cpu_builtins): Added __ARM_FEATURE_CMSE macro. * config/arm/arm-flags.h: Define FL2_CMSE. * config/arm.c (arm_arch_cmse): New. (arm_option_override): New error for unsupported cmse target. * config/arm/arm.h (arm_arch_cmse): New. * config/arm/arm.opt (mcmse): New. * config/arm/arm_cmse.h: New file. * doc/invoke.texi (ARM Options): Add -mcmse. * doc/sourcebuild.texi (arm_cmse_ok): Add new effective target. * doc/extend.texi: Add ARMv8-M Security Extensions entry. gcc/testsuite/ChangeLog: 2016-12-02 Andre Vieira Thomas Preud'homme * gcc.target/arm/cmse/cmse.exp: New. * gcc.target/arm/cmse/cmse-1.c: New. * gcc.target/arm/cmse/cmse-12.c: New. * lib/target-supports.exp (check_effective_target_arm_cmse_ok): New. libgcc/ChangeLog: 2016-12-02 Andre Vieira Thomas Preud'homme * config/arm/t-arm (HAVE_CMSE): New. * config/arm/cmse.c: New. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@243187 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/config/arm/arm-arches.def | 6 +- gcc/config/arm/arm-c.c | 8 ++ gcc/config/arm/arm-flags.h | 1 + gcc/config/arm/arm.c | 7 ++ gcc/config/arm/arm.h | 3 + gcc/config/arm/arm.opt | 4 + gcc/config/arm/arm_cmse.h | 192 ++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 218 insertions(+), 3 deletions(-) create mode 100644 gcc/config/arm/arm_cmse.h (limited to 'gcc/config') diff --git a/gcc/config/arm/arm-arches.def b/gcc/config/arm/arm-arches.def index cd79bc50585..71cabcc75e2 100644 --- a/gcc/config/arm/arm-arches.def +++ b/gcc/config/arm/arm-arches.def @@ -70,10 +70,10 @@ ARM_ARCH ("armv8.2-a+fp16", cortexa53, 8A, ARM_FSET_MAKE (FL_CO_PROC | FL_CRC32 | FL_FOR_ARCH8A, FL2_FOR_ARCH8_2A | FL2_FP16INST)) ARM_ARCH("armv8-m.base", cortexm23, 8M_BASE, - ARM_FSET_MAKE_CPU1 ( FL_FOR_ARCH8M_BASE)) + ARM_FSET_MAKE (FL_FOR_ARCH8M_BASE, FL2_CMSE)) ARM_ARCH("armv8-m.main", cortexm7, 8M_MAIN, - ARM_FSET_MAKE_CPU1(FL_CO_PROC | FL_FOR_ARCH8M_MAIN)) + ARM_FSET_MAKE (FL_CO_PROC | FL_FOR_ARCH8M_MAIN, FL2_CMSE)) ARM_ARCH("armv8-m.main+dsp", cortexm33, 8M_MAIN, - ARM_FSET_MAKE_CPU1(FL_CO_PROC | FL_ARCH7EM | FL_FOR_ARCH8M_MAIN)) + ARM_FSET_MAKE (FL_CO_PROC | FL_ARCH7EM | FL_FOR_ARCH8M_MAIN, FL2_CMSE)) ARM_ARCH("iwmmxt", iwmmxt, 5TE, ARM_FSET_MAKE_CPU1 (FL_LDSCHED | FL_STRONG | FL_FOR_ARCH5TE | FL_XSCALE | FL_IWMMXT)) ARM_ARCH("iwmmxt2", iwmmxt2, 5TE, ARM_FSET_MAKE_CPU1 (FL_LDSCHED | FL_STRONG | FL_FOR_ARCH5TE | FL_XSCALE | FL_IWMMXT | FL_IWMMXT2)) diff --git a/gcc/config/arm/arm-c.c b/gcc/config/arm/arm-c.c index 74417a6446d..b5921342f2e 100644 --- a/gcc/config/arm/arm-c.c +++ b/gcc/config/arm/arm-c.c @@ -77,6 +77,14 @@ arm_cpu_builtins (struct cpp_reader* pfile) def_or_undef_macro (pfile, "__ARM_32BIT_STATE", TARGET_32BIT); + if (arm_arch8 && !arm_arch_notm) + { + if (arm_arch_cmse && use_cmse) + builtin_define_with_int_value ("__ARM_FEATURE_CMSE", 3); + else + builtin_define ("__ARM_FEATURE_CMSE"); + } + if (TARGET_ARM_FEATURE_LDREX) builtin_define_with_int_value ("__ARM_FEATURE_LDREX", TARGET_ARM_FEATURE_LDREX); diff --git a/gcc/config/arm/arm-flags.h b/gcc/config/arm/arm-flags.h index 7ce059bcf87..fb498380938 100644 --- a/gcc/config/arm/arm-flags.h +++ b/gcc/config/arm/arm-flags.h @@ -70,6 +70,7 @@ #define FL2_ARCH8_2 (1U << 1) /* Architecture 8.2. */ #define FL2_FP16INST (1U << 2) /* FP16 Instructions for ARMv8.2 and later. */ +#define FL2_CMSE (1U << 3) /* ARMv8-M Security Extensions. */ /* Flags that only effect tuning, not available instructions. */ #define FL_TUNE (FL_WBUF | FL_VFPV2 | FL_STRONG | FL_LDSCHED \ diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 74cb64ce789..0d7d38a73f1 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -909,6 +909,9 @@ int arm_condexec_masklen = 0; /* Nonzero if chip supports the ARMv8 CRC instructions. */ int arm_arch_crc = 0; +/* Nonzero if chip supports the ARMv8-M security extensions. */ +int arm_arch_cmse = 0; + /* Nonzero if the core has a very small, high-latency, multiply unit. */ int arm_m_profile_small_mul = 0; @@ -3227,6 +3230,7 @@ arm_option_override (void) arm_arch_no_volatile_ce = ARM_FSET_HAS_CPU1 (insn_flags, FL_NO_VOLATILE_CE); arm_tune_cortex_a9 = (arm_tune == TARGET_CPU_cortexa9) != 0; arm_arch_crc = ARM_FSET_HAS_CPU1 (insn_flags, FL_CRC32); + arm_arch_cmse = ARM_FSET_HAS_CPU2 (insn_flags, FL2_CMSE); arm_m_profile_small_mul = ARM_FSET_HAS_CPU1 (insn_flags, FL_SMALLMUL); arm_fp16_inst = ARM_FSET_HAS_CPU2 (insn_flags, FL2_FP16INST); if (arm_fp16_inst) @@ -3494,6 +3498,9 @@ arm_option_override (void) if (target_slow_flash_data || target_pure_code) arm_disable_literal_pool = true; + if (use_cmse && !arm_arch_cmse) + error ("target CPU does not support ARMv8-M Security Extensions"); + /* Disable scheduling fusion by default if it's not armv7 processor or doesn't prefer ldrd/strd. */ if (flag_schedule_fusion == 2 diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h index 464710b2a98..3d627436c57 100644 --- a/gcc/config/arm/arm.h +++ b/gcc/config/arm/arm.h @@ -523,6 +523,9 @@ extern bool arm_disable_literal_pool; /* Nonzero if chip supports the ARMv8 CRC instructions. */ extern int arm_arch_crc; +/* Nonzero if chip supports the ARMv8-M Security Extensions. */ +extern int arm_arch_cmse; + #ifndef TARGET_DEFAULT #define TARGET_DEFAULT (MASK_APCS_FRAME) #endif diff --git a/gcc/config/arm/arm.opt b/gcc/config/arm/arm.opt index 8856976c6de..a37faccbb02 100644 --- a/gcc/config/arm/arm.opt +++ b/gcc/config/arm/arm.opt @@ -105,6 +105,10 @@ mfloat-abi= Target RejectNegative Joined Enum(float_abi_type) Var(arm_float_abi) Init(TARGET_DEFAULT_FLOAT_ABI) Specify if floating point hardware should be used. +mcmse +Target RejectNegative Var(use_cmse) +Specify that the compiler should target secure code as per ARMv8-M Security Extensions. + Enum Name(float_abi_type) Type(enum float_abi_type) Known floating-point ABIs (for use with the -mfloat-abi= option): diff --git a/gcc/config/arm/arm_cmse.h b/gcc/config/arm/arm_cmse.h new file mode 100644 index 00000000000..894343bb835 --- /dev/null +++ b/gcc/config/arm/arm_cmse.h @@ -0,0 +1,192 @@ +/* ARMv8-M Secure Extensions intrinsics include file. + + Copyright (C) 2015-2016 Free Software Foundation, Inc. + Contributed by ARM Ltd. + + This file is part of GCC. + + GCC is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3, or (at your + option) any later version. + + GCC is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public + License for more details. + + Under Section 7 of GPL version 3, you are granted additional + permissions described in the GCC Runtime Library Exception, version + 3.1, as published by the Free Software Foundation. + + You should have received a copy of the GNU General Public License and + a copy of the GCC Runtime Library Exception along with this program; + see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + . */ + + +#ifndef _GCC_ARM_CMSE_H +#define _GCC_ARM_CMSE_H + +#ifdef __cplusplus +extern "C" { +#endif + +#if __ARM_FEATURE_CMSE & 1 + +#include +#include + +#ifdef __ARM_BIG_ENDIAN + +typedef union { + struct cmse_address_info { +#if __ARM_FEATURE_CMSE & 2 + unsigned idau_region:8; + unsigned idau_region_valid:1; + unsigned secure:1; + unsigned nonsecure_readwrite_ok:1; + unsigned nonsecure_read_ok:1; +#else + unsigned :12; +#endif + unsigned readwrite_ok:1; + unsigned read_ok:1; +#if __ARM_FEATURE_CMSE & 2 + unsigned sau_region_valid:1; +#else + unsigned :1; +#endif + unsigned mpu_region_valid:1; +#if __ARM_FEATURE_CMSE & 2 + unsigned sau_region:8; +#else + unsigned :8; +#endif + unsigned mpu_region:8; + } flags; + unsigned value; +} cmse_address_info_t; + +#else + +typedef union { + struct cmse_address_info { + unsigned mpu_region:8; +#if __ARM_FEATURE_CMSE & 2 + unsigned sau_region:8; +#else + unsigned :8; +#endif + unsigned mpu_region_valid:1; +#if __ARM_FEATURE_CMSE & 2 + unsigned sau_region_valid:1; +#else + unsigned :1; +#endif + unsigned read_ok:1; + unsigned readwrite_ok:1; +#if __ARM_FEATURE_CMSE & 2 + unsigned nonsecure_read_ok:1; + unsigned nonsecure_readwrite_ok:1; + unsigned secure:1; + unsigned idau_region_valid:1; + unsigned idau_region:8; +#else + unsigned :12; +#endif + } flags; + unsigned value; +} cmse_address_info_t; + +#endif /* __ARM_BIG_ENDIAN */ + +#define cmse_TT_fptr(p) (__cmse_TT_fptr ((__cmse_fptr)(p))) + +typedef void (*__cmse_fptr)(void); + +#define __CMSE_TT_ASM(flags) \ +{ \ + cmse_address_info_t __result; \ + __asm__ ("tt" # flags " %0,%1" \ + : "=r"(__result) \ + : "r"(__p) \ + : "memory"); \ + return __result; \ +} + +__extension__ static __inline __attribute__ ((__always_inline__)) +cmse_address_info_t +__cmse_TT_fptr (__cmse_fptr __p) +__CMSE_TT_ASM () + +__extension__ static __inline __attribute__ ((__always_inline__)) +cmse_address_info_t +cmse_TT (void *__p) +__CMSE_TT_ASM () + +#define cmse_TTT_fptr(p) (__cmse_TTT_fptr ((__cmse_fptr)(p))) + +__extension__ static __inline __attribute__ ((__always_inline__)) +cmse_address_info_t +__cmse_TTT_fptr (__cmse_fptr __p) +__CMSE_TT_ASM (t) + +__extension__ static __inline __attribute__ ((__always_inline__)) +cmse_address_info_t +cmse_TTT (void *__p) +__CMSE_TT_ASM (t) + +#if __ARM_FEATURE_CMSE & 2 + +#define cmse_TTA_fptr(p) (__cmse_TTA_fptr ((__cmse_fptr)(p))) + +__extension__ static __inline __attribute__ ((__always_inline__)) +cmse_address_info_t +__cmse_TTA_fptr (__cmse_fptr __p) +__CMSE_TT_ASM (a) + +__extension__ static __inline __attribute__ ((__always_inline__)) +cmse_address_info_t +cmse_TTA (void *__p) +__CMSE_TT_ASM (a) + +#define cmse_TTAT_fptr(p) (__cmse_TTAT_fptr ((__cmse_fptr)(p))) + +__extension__ static __inline cmse_address_info_t +__attribute__ ((__always_inline__)) +__cmse_TTAT_fptr (__cmse_fptr __p) +__CMSE_TT_ASM (at) + +__extension__ static __inline cmse_address_info_t +__attribute__ ((__always_inline__)) +cmse_TTAT (void *__p) +__CMSE_TT_ASM (at) + +#define CMSE_AU_NONSECURE 2 +#define CMSE_MPU_NONSECURE 16 +#define CMSE_NONSECURE 18 + +#define cmse_nsfptr_create(p) ((typeof ((p))) ((intptr_t) (p) & ~1)) + +#define cmse_is_nsfptr(p) (!((intptr_t) (p) & 1)) + +#endif /* __ARM_FEATURE_CMSE & 2 */ + +#define CMSE_MPU_UNPRIV 4 +#define CMSE_MPU_READWRITE 1 +#define CMSE_MPU_READ 8 + +__extension__ void * +cmse_check_address_range (void *, size_t, int); + +#define cmse_check_pointed_object(p, f) \ + ((typeof ((p))) cmse_check_address_range ((p), sizeof (*(p)), (f))) + +#endif /* __ARM_FEATURE_CMSE & 1 */ + +#ifdef __cplusplus +} +#endif + +#endif /* _GCC_ARM_CMSE_H */ -- cgit v1.2.1