sh: Add DSP registers to regset interface. (5dadb343) · Commits · EulixOS / Software / Kernel

arch/sh/Kconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -23,7 +23,7 @@ config SUPERH32
		def_bool !SUPERH64
		select HAVE_KPROBES
		select HAVE_KRETPROBES
		select HAVE_ARCH_TRACEHOOK if (!SH_FPU && !SH_DSP)
		select HAVE_ARCH_TRACEHOOK if !SH_FPU

		config SUPERH64
		def_bool y if CPU_SH5

arch/sh/include/asm/elf.h

+2 −3

Original line number	Diff line number	Diff line
		@@ -108,11 +108,10 @@ typedef struct user_fpu_struct elf_fpregset_t;
		#define elf_check_fdpic(x) ((x)->e_flags & EF_SH_FDPIC)
		#define elf_check_const_displacement(x) ((x)->e_flags & EF_SH_PIC)

		#if defined(CONFIG_SUPERH32) && \
		(!defined(CONFIG_SH_FPU) && !defined(CONFIG_SH_DSP))
		#if defined(CONFIG_SUPERH32) && !defined(CONFIG_SH_FPU)
		/*
		* Enable dump using regset for general purpose registers, use this as
		* the default once the FPU and DSP registers are moved over also.
		* the default once the FPU registers are moved over also.
		*/
		#define CORE_DUMP_USE_REGSET
		#endif

arch/sh/include/asm/ptrace.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -123,6 +123,9 @@ extern void user_disable_single_step(struct task_struct *);
		#define task_pt_regs(task) \
		((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
		- sizeof(struct pt_dspregs) - sizeof(unsigned long)) - 1)
		#define task_pt_dspregs(task) \
		((struct pt_dspregs *) (task_stack_page(task) + THREAD_SIZE \
		- sizeof(unsigned long)) - 1)
		#else
		#define task_pt_regs(task) \
		((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \

arch/sh/kernel/ptrace_32.c

+59 −27

Original line number	Diff line number	Diff line
		@@ -145,11 +145,50 @@ static int genregs_set(struct task_struct *target,
		return ret;
		}

		#ifdef CONFIG_SH_DSP
		static int dspregs_get(struct task_struct *target,
		const struct user_regset *regset,
		unsigned int pos, unsigned int count,
		void kbuf, void __user ubuf)
		{
		const struct pt_dspregs *regs = task_pt_dspregs(target);
		int ret;

		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, regs,
		0, sizeof(struct pt_dspregs));
		if (!ret)
		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
		sizeof(struct pt_dspregs), -1);

		return ret;
		}

		static int dspregs_set(struct task_struct *target,
		const struct user_regset *regset,
		unsigned int pos, unsigned int count,
		const void kbuf, const void __user ubuf)
		{
		struct pt_dspregs *regs = task_pt_dspregs(target);
		int ret;

		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, regs,
		0, sizeof(struct pt_dspregs));
		if (!ret)
		ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
		sizeof(struct pt_dspregs), -1);

		return ret;
		}
		#endif

		/*
		* These are our native regset flavours.
		*/
		enum sh_regset {
		REGSET_GENERAL,
		#ifdef CONFIG_SH_DSP
		REGSET_DSP,
		#endif
		};

		static const struct user_regset sh_regsets[] = {
		@@ -166,6 +205,16 @@ static const struct user_regset sh_regsets[] = {
		.get = genregs_get,
		.set = genregs_set,
		},

		#ifdef CONFIG_SH_DSP
		[REGSET_DSP] = {
		.n = sizeof(struct pt_dspregs) / sizeof(long),
		.size = sizeof(long),
		.align = sizeof(long),
		.get = dspregs_get,
		.set = dspregs_set,
		},
		#endif
		};

		static const struct user_regset_view user_sh_native_view = {
		@@ -242,33 +291,16 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
		0, sizeof(struct pt_regs),
		(const void __user *)data);
		#ifdef CONFIG_SH_DSP
		case PTRACE_GETDSPREGS: {
		unsigned long dp;

		ret = -EIO;
		dp = ((unsigned long) child) + THREAD_SIZE -
		sizeof(struct pt_dspregs);
		if (((int ) (dp - 4)) == SR_FD) {
		copy_to_user((void )addr, (void ) dp,
		sizeof(struct pt_dspregs));
		ret = 0;
		}
		break;
		}

		case PTRACE_SETDSPREGS: {
		unsigned long dp;

		ret = -EIO;
		dp = ((unsigned long) child) + THREAD_SIZE -
		sizeof(struct pt_dspregs);
		if (((int ) (dp - 4)) == SR_FD) {
		copy_from_user((void ) dp, (void )addr,
		sizeof(struct pt_dspregs));
		ret = 0;
		}
		break;
		}
		case PTRACE_GETDSPREGS:
		return copy_regset_to_user(child, &user_sh_native_view,
		REGSET_DSP,
		0, sizeof(struct pt_dspregs),
		(void __user *)data);
		case PTRACE_SETDSPREGS:
		return copy_regset_from_user(child, &user_sh_native_view,
		REGSET_DSP,
		0, sizeof(struct pt_dspregs),
		(const void __user *)data);
		#endif
		#ifdef CONFIG_BINFMT_ELF_FDPIC
		case PTRACE_GETFDPIC: {