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[64.2.3.195]) by mx.google.com with ESMTPSA id z5sm6481381igl.21.2014.09.03.14.19.25 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Wed, 03 Sep 2014 14:19:25 -0700 (PDT) Received: from localhost.localdomain (apinskidesktop [127.0.0.1]) by localhost.localdomain (8.14.3/8.14.3/Debian-9.4) with ESMTP id s83LJOq1031023 (version=TLSv1/SSLv3 cipher=DHE-DSS-AES256-SHA bits=256 verify=NO); Wed, 3 Sep 2014 14:19:24 -0700 Received: (from apinski@localhost) by localhost.localdomain (8.14.3/8.14.3/Submit) id s83LJOiC031022; Wed, 3 Sep 2014 14:19:24 -0700 From: Andrew Pinski To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, pinskia@gmail.com Subject: [PATCH 03/24] ARM64: Change some CONFIG_COMPAT over to use CONFIG_AARCH32_EL0 instead Date: Wed, 3 Sep 2014 14:18:57 -0700 Message-Id: <1409779158-30963-4-git-send-email-apinski@cavium.com> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1409779158-30963-1-git-send-email-apinski@cavium.com> References: <1409779158-30963-1-git-send-email-apinski@cavium.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140903_141948_503997_0A86E151 X-CRM114-Status: GOOD ( 21.86 ) X-Spam-Score: -1.4 (-) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-1.4 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [209.85.223.172 listed in list.dnswl.org] -0.7 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [209.85.223.172 listed in wl.mailspike.net] Cc: Andrew Pinski X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: , List-Help: , List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: apinski@cavium.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.220.177 as permitted sender) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 This patch changes CONFIG_COMPAT checks inside the arm64 which are AARCH32 specific Signed-off-by: Andrew Pinski --- arch/arm64/include/asm/arch_timer.h | 2 +- arch/arm64/include/asm/elf.h | 20 +++++++++++++++++--- arch/arm64/include/asm/fpsimd.h | 2 +- arch/arm64/include/asm/ptrace.h | 2 +- arch/arm64/include/asm/signal32.h | 4 ++-- arch/arm64/include/asm/stat.h | 4 ++-- arch/arm64/include/asm/unistd.h | 2 +- arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/asm-offsets.c | 2 +- arch/arm64/kernel/entry.S | 6 +++--- arch/arm64/kernel/head.S | 2 +- arch/arm64/kernel/ptrace.c | 34 ++++++++++++++++++++++++++++------ arch/arm64/kernel/signal.c | 15 +++++++++++++++ arch/arm64/kernel/traps.c | 2 +- arch/arm64/kernel/vdso.c | 5 +++-- 15 files changed, 78 insertions(+), 26 deletions(-) diff --git a/arch/arm64/include/asm/arch_timer.h b/arch/arm64/include/asm/arch_timer.h index 9400596..d9687d1 100644 --- a/arch/arm64/include/asm/arch_timer.h +++ b/arch/arm64/include/asm/arch_timer.h @@ -130,7 +130,7 @@ static inline void arch_timer_evtstrm_enable(int divider) | ARCH_TIMER_VIRT_EVT_EN; arch_timer_set_cntkctl(cntkctl); elf_hwcap |= HWCAP_EVTSTRM; -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 compat_elf_hwcap |= COMPAT_HWCAP_EVTSTRM; #endif } diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h index 01d3aab..b9217f0 100644 --- a/arch/arm64/include/asm/elf.h +++ b/arch/arm64/include/asm/elf.h @@ -171,14 +171,16 @@ extern unsigned long arch_randomize_brk(struct mm_struct *mm); #define COMPAT_ELF_ET_DYN_BASE (randomize_et_dyn(2 * TASK_SIZE_32 / 3)) +#ifdef CONFIG_AARCH32_EL0 + /* AArch32 registers. */ -#define COMPAT_ELF_NGREG 18 +#define COMPAT_A32_ELF_NGREG 18 typedef unsigned int compat_elf_greg_t; -typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG]; +typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_A32_ELF_NGREG]; /* AArch32 EABI. */ #define EF_ARM_EABI_MASK 0xff000000 -#define compat_elf_check_arch(x) (((x)->e_machine == EM_ARM) && \ +#define compat_a32_elf_check_arch(x) (((x)->e_machine == EM_ARM) && \ ((x)->e_flags & EF_ARM_EABI_MASK)) #define compat_start_thread compat_start_thread @@ -189,6 +191,18 @@ extern int aarch32_setup_vectors_page(struct linux_binprm *bprm, #define compat_arch_setup_additional_pages \ aarch32_setup_vectors_page +#else + +typedef elf_greg_t compat_elf_greg_t; +typedef elf_gregset_t compat_elf_gregset_t; +#define compat_a32_elf_check_arch(x) 0 +#define COMPAT_SET_PERSONALITY(ex) +#define COMPAT_ARCH_DLINFO + +#endif + +#define compat_elf_check_arch(x) compat_a32_elf_check_arch(x) + #endif /* CONFIG_COMPAT */ #endif diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h index 50f559f..63b19f1 100644 --- a/arch/arm64/include/asm/fpsimd.h +++ b/arch/arm64/include/asm/fpsimd.h @@ -52,7 +52,7 @@ struct fpsimd_partial_state { }; -#if defined(__KERNEL__) && defined(CONFIG_COMPAT) +#if defined(__KERNEL__) && defined(CONFIG_AARCH32_EL0) /* Masks for extracting the FPSR and FPCR from the FPSCR */ #define VFP_FPSCR_STAT_MASK 0xf800009f #define VFP_FPSCR_CTRL_MASK 0x07f79f00 diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h index 41ed9e1..690a380 100644 --- a/arch/arm64/include/asm/ptrace.h +++ b/arch/arm64/include/asm/ptrace.h @@ -113,7 +113,7 @@ struct pt_regs { #define arch_has_single_step() (1) -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 #define compat_thumb_mode(regs) \ (((regs)->pstate & COMPAT_PSR_T_BIT)) #else diff --git a/arch/arm64/include/asm/signal32.h b/arch/arm64/include/asm/signal32.h index eeaa975..522c345 100644 --- a/arch/arm64/include/asm/signal32.h +++ b/arch/arm64/include/asm/signal32.h @@ -17,7 +17,7 @@ #define __ASM_SIGNAL32_H #ifdef __KERNEL__ -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 #include #define AARCH32_KERN_SIGRET_CODE_OFFSET 0x500 @@ -47,6 +47,6 @@ static inline int compat_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t static inline void compat_setup_restart_syscall(struct pt_regs *regs) { } -#endif /* CONFIG_COMPAT */ +#endif /* CONFIG_AARCH32_EL0 */ #endif /* __KERNEL__ */ #endif /* __ASM_SIGNAL32_H */ diff --git a/arch/arm64/include/asm/stat.h b/arch/arm64/include/asm/stat.h index 15e3559..e3b5865 100644 --- a/arch/arm64/include/asm/stat.h +++ b/arch/arm64/include/asm/stat.h @@ -18,7 +18,7 @@ #include -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 #include @@ -57,5 +57,5 @@ struct stat64 { compat_u64 st_ino; }; -#endif +#endif /* CONFIG_AARCH32_EL0 */ #endif diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h index 6d2bf41..70e5559 100644 --- a/arch/arm64/include/asm/unistd.h +++ b/arch/arm64/include/asm/unistd.h @@ -13,7 +13,7 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 #define __ARCH_WANT_COMPAT_SYS_GETDENTS64 #define __ARCH_WANT_COMPAT_STAT64 #define __ARCH_WANT_SYS_GETHOSTNAME diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index df7ef87..6de85f5 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -17,7 +17,7 @@ arm64-obj-y := cputable.o debug-monitors.o entry.o irq.o fpsimd.o \ hyp-stub.o psci.o cpu_ops.o insn.o return_address.o \ cpuinfo.o -arm64-obj-$(CONFIG_COMPAT) += sys32.o kuser32.o signal32.o \ +arm64-obj-$(CONFIG_AARCH32_EL0) += sys32.o kuser32.o signal32.o \ sys_compat.o arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c index 9a9fce0..d9c429c 100644 --- a/arch/arm64/kernel/asm-offsets.c +++ b/arch/arm64/kernel/asm-offsets.c @@ -53,7 +53,7 @@ int main(void) DEFINE(S_X7, offsetof(struct pt_regs, regs[7])); DEFINE(S_LR, offsetof(struct pt_regs, regs[30])); DEFINE(S_SP, offsetof(struct pt_regs, sp)); -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 DEFINE(S_COMPAT_SP, offsetof(struct pt_regs, compat_sp)); #endif DEFINE(S_PSTATE, offsetof(struct pt_regs, pstate)); diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S index f0b5e51..9314352 100644 --- a/arch/arm64/kernel/entry.S +++ b/arch/arm64/kernel/entry.S @@ -196,7 +196,7 @@ ENTRY(vectors) ventry el0_fiq_invalid // FIQ 64-bit EL0 ventry el0_error_invalid // Error 64-bit EL0 -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 ventry el0_sync_compat // Synchronous 32-bit EL0 ventry el0_irq_compat // IRQ 32-bit EL0 ventry el0_fiq_invalid_compat // FIQ 32-bit EL0 @@ -236,7 +236,7 @@ el0_error_invalid: inv_entry 0, BAD_ERROR ENDPROC(el0_error_invalid) -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 el0_fiq_invalid_compat: inv_entry 0, BAD_FIQ, 32 ENDPROC(el0_fiq_invalid_compat) @@ -399,7 +399,7 @@ el0_sync: b.ge el0_dbg b el0_inv -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 .align 6 el0_sync_compat: kernel_entry 0, 32 diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index 8730690..d3e2768 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -323,7 +323,7 @@ CPU_LE( movk x0, #0x30d0, lsl #16 ) // Clear EE and E0E on LE systems mov x0, #0x33ff msr cptr_el2, x0 // Disable copro. traps to EL2 -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 msr hstr_el2, xzr // Disable CP15 traps to EL2 #endif diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index fe63ac5..033e07c 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include @@ -75,7 +76,7 @@ static void ptrace_hbptriggered(struct perf_event *bp, .si_addr = (void __user *)(bkpt->trigger), }; -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 int i; if (!is_compat_task()) @@ -617,6 +618,7 @@ static const struct user_regset_view user_aarch64_view = { #ifdef CONFIG_COMPAT #include +#ifdef CONFIG_AARCH32_EL0 enum compat_regset { REGSET_COMPAT_GPR, @@ -793,7 +795,7 @@ static int compat_vfp_set(struct task_struct *target, static const struct user_regset aarch32_regsets[] = { [REGSET_COMPAT_GPR] = { .core_note_type = NT_PRSTATUS, - .n = COMPAT_ELF_NGREG, + .n = COMPAT_A32_ELF_NGREG, .size = sizeof(compat_elf_greg_t), .align = sizeof(compat_elf_greg_t), .get = compat_gpr_get, @@ -991,8 +993,8 @@ static int compat_ptrace_sethbpregs(struct task_struct *tsk, compat_long_t num, } #endif /* CONFIG_HAVE_HW_BREAKPOINT */ -long compat_arch_ptrace(struct task_struct *child, compat_long_t request, - compat_ulong_t caddr, compat_ulong_t cdata) +long compat_a32_arch_ptrace(struct task_struct *child, compat_long_t request, + compat_ulong_t caddr, compat_ulong_t cdata) { unsigned long addr = caddr; unsigned long data = cdata; @@ -1068,11 +1070,31 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, return ret; } -#endif /* CONFIG_COMPAT */ +#else /* !CONFIG_AARCH32_EL0 */ +long compat_a32_arch_ptrace(struct task_struct *child, compat_long_t request, + compat_ulong_t caddr, compat_ulong_t cdata) +{ + return -EINVAL; +} +#endif /* !CONFIG_AARCH32_EL0 */ + +/* + * In ILP32, compat_arch_ptrace is used via the compat syscall, we don't need + * to do anything special for ILP32 though; only for AARCH32. + */ +long compat_arch_ptrace(struct task_struct *child, compat_long_t request, + compat_ulong_t caddr, compat_ulong_t cdata) +{ + if (is_compat_task()) + return compat_a32_arch_ptrace(child, request, caddr, cdata); + return compat_ptrace_request(child, request, caddr, cdata); +} +#endif + const struct user_regset_view *task_user_regset_view(struct task_struct *task) { -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 if (is_compat_thread(task_thread_info(task))) return &user_aarch32_view; #endif diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c index 6fa7921..8527d99 100644 --- a/arch/arm64/kernel/signal.c +++ b/arch/arm64/kernel/signal.c @@ -421,3 +421,18 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, fpsimd_restore_current_state(); } + +/* + * Some functions are needed for compat ptrace but we don't define + * them if we don't have AARCH32 support compiled in + */ +#if defined CONFIG_COMPAT && !defined CONFIG_AARCH32_EL0 +int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from) +{ + return -EFAULT; +} +int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from) +{ + return -EFAULT; +} +#endif diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 02cd3f0..38a56d1 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -288,7 +288,7 @@ long compat_arm_syscall(struct pt_regs *regs); asmlinkage long do_ni_syscall(struct pt_regs *regs) { -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 long ret; if (is_compat_task()) { ret = compat_arm_syscall(regs); diff --git a/arch/arm64/kernel/vdso.c b/arch/arm64/kernel/vdso.c index 32aeea0..a777ac3 100644 --- a/arch/arm64/kernel/vdso.c +++ b/arch/arm64/kernel/vdso.c @@ -35,6 +35,7 @@ #include #include #include +#include extern char vdso_start, vdso_end; static unsigned long vdso_pages; @@ -49,7 +50,7 @@ static union { } vdso_data_store __page_aligned_data; struct vdso_data *vdso_data = &vdso_data_store.data; -#ifdef CONFIG_COMPAT +#ifdef CONFIG_AARCH32_EL0 /* * Create and map the vectors page for AArch32 tasks. */ @@ -107,7 +108,7 @@ int aarch32_setup_vectors_page(struct linux_binprm *bprm, int uses_interp) return PTR_ERR_OR_ZERO(ret); } -#endif /* CONFIG_COMPAT */ +#endif /* CONFIG_AARCH32_EL0 */ static struct vm_special_mapping vdso_spec[2];