Re: [PATCH v3 26/29] nios2: ptrace support
On Tue, Sep 16, 2014 at 5:43 PM, Tobias Klauser wrote:
>
> This could be simplified to:
>
> long arch_ptrace(struct task_struct *child, long request, unsigned long addr,
> unsigned long data)
> {
> return ptrace_request(child, request, addr, data);
> }
Okay, will change this.
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Re: [PATCH v3 26/29] nios2: ptrace support
On 2014-09-08 at 11:22:37 +0200, Ley Foon Tan wrote:
> Add ptrace support for nios2.
>
> Signed-off-by: Ley Foon Tan
> ---
> arch/nios2/include/asm/ptrace.h | 33 +++
> arch/nios2/include/uapi/asm/ptrace.h | 120
> arch/nios2/kernel/ptrace.c | 176
> +++
> 3 files changed, 329 insertions(+)
> create mode 100644 arch/nios2/include/asm/ptrace.h
> create mode 100644 arch/nios2/include/uapi/asm/ptrace.h
> create mode 100644 arch/nios2/kernel/ptrace.c
[...]
> diff --git a/arch/nios2/kernel/ptrace.c b/arch/nios2/kernel/ptrace.c
> new file mode 100644
> index 000..bcbf748
> --- /dev/null
> +++ b/arch/nios2/kernel/ptrace.c
[...]
> +long arch_ptrace(struct task_struct *child, long request, unsigned long addr,
> + unsigned long data)
> +{
> + int ret = -EIO;
> +
> + pr_debug("REQ=%ld: ADDR =0x%lx, DATA=0x%lx)\n", request, addr, data);
> +
> + switch (request) {
> + default:
> + ret = ptrace_request(child, request, addr, data);
> + break;
> + }
> +
> + return ret;
> +}
This could be simplified to:
long arch_ptrace(struct task_struct *child, long request, unsigned long addr,
unsigned long data)
{
return ptrace_request(child, request, addr, data);
}
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[PATCH v3 26/29] nios2: ptrace support
Add ptrace support for nios2.
Signed-off-by: Ley Foon Tan
---
arch/nios2/include/asm/ptrace.h | 33 +++
arch/nios2/include/uapi/asm/ptrace.h | 120
arch/nios2/kernel/ptrace.c | 176 +++
3 files changed, 329 insertions(+)
create mode 100644 arch/nios2/include/asm/ptrace.h
create mode 100644 arch/nios2/include/uapi/asm/ptrace.h
create mode 100644 arch/nios2/kernel/ptrace.c
diff --git a/arch/nios2/include/asm/ptrace.h b/arch/nios2/include/asm/ptrace.h
new file mode 100644
index 000..20fb1cf
--- /dev/null
+++ b/arch/nios2/include/asm/ptrace.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2013 Altera Corporation
+ * Copyright (C) 2010 Tobias Klauser
+ * Copyright (C) 2004 Microtronix Datacom Ltd
+ *
+ * based on m68k asm/processor.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_NIOS2_PTRACE_H
+#define _ASM_NIOS2_PTRACE_H
+
+#include
+
+#ifndef __ASSEMBLY__
+#define user_mode(regs)(((regs)->estatus & ESTATUS_EU))
+
+#define instruction_pointer(regs) ((regs)->ra)
+#define profile_pc(regs) instruction_pointer(regs)
+#define user_stack_pointer(regs) ((regs)->sp)
+extern void show_regs(struct pt_regs *);
+
+#define current_pt_regs() \
+ ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE)\
+ - 1)
+
+int do_syscall_trace_enter(void);
+void do_syscall_trace_exit(void);
+#endif /* __ASSEMBLY__ */
+#endif /* _ASM_NIOS2_PTRACE_H */
diff --git a/arch/nios2/include/uapi/asm/ptrace.h
b/arch/nios2/include/uapi/asm/ptrace.h
new file mode 100644
index 000..e83a7c9
--- /dev/null
+++ b/arch/nios2/include/uapi/asm/ptrace.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2010 Tobias Klauser
+ * Copyright (C) 2004 Microtronix Datacom Ltd
+ *
+ * based on m68k asm/processor.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _UAPI_ASM_NIOS2_PTRACE_H
+#define _UAPI_ASM_NIOS2_PTRACE_H
+
+#ifndef __ASSEMBLY__
+
+/*
+ * Register numbers used by 'ptrace' system call interface.
+ */
+
+/* GP registers */
+#define PTR_R0 0
+#define PTR_R1 1
+#define PTR_R2 2
+#define PTR_R3 3
+#define PTR_R4 4
+#define PTR_R5 5
+#define PTR_R6 6
+#define PTR_R7 7
+#define PTR_R8 8
+#define PTR_R9 9
+#define PTR_R1010
+#define PTR_R1111
+#define PTR_R1212
+#define PTR_R1313
+#define PTR_R1414
+#define PTR_R1515
+#define PTR_R1616
+#define PTR_R1717
+#define PTR_R1818
+#define PTR_R1919
+#define PTR_R2020
+#define PTR_R2121
+#define PTR_R2222
+#define PTR_R2323
+#define PTR_R2424
+#define PTR_R2525
+#define PTR_GP 26
+#define PTR_SP 27
+#define PTR_FP 28
+#define PTR_EA 29
+#define PTR_BA 30
+#define PTR_RA 31
+/* Control registers */
+#define PTR_PC 32
+#define PTR_STATUS 33
+#define PTR_ESTATUS34
+#define PTR_BSTATUS35
+#define PTR_IENABLE36
+#define PTR_IPENDING 37
+#define PTR_CPUID 38
+#define PTR_CTL6 39
+#define PTR_CTL7 40
+#define PTR_PTEADDR41
+#define PTR_TLBACC 42
+#define PTR_TLBMISC43
+
+#define NUM_PTRACE_REG (PTR_TLBMISC + 1)
+
+/* this struct defines the way the registers are stored on the
+ stack during a system call.
+
+ There is a fake_regs in setup.c that has to match pt_regs.*/
+
+struct pt_regs {
+ unsigned long r8; /* r8-r15 Caller-saved GP registers */
+ unsigned long r9;
+ unsigned long r10;
+ unsigned long r11;
+ unsigned long r12;
+ unsigned long r13;
+ unsigned long r14;
+ unsigned long r15;
+ unsigned long r1; /* Assembler temporary */
+ unsigned long r2; /* Retval LS 32bits */
+ unsigned long r3; /* Retval MS 32bits */
+ unsigned long r4; /* r4-r7 Register arguments */
+ unsigned long r5;
+ unsigned long r6;
+ unsigned long r7;
+ unsigned long orig_r2; /* Copy of r2 ?? */
+ unsigned long ra; /* Return address */
+ unsigned long fp; /* Frame pointer */
+ unsigned long sp; /* Stack pointer */
+ unsigned long gp; /* Global pointer */
+ unsigned long estatus;
+ unsigned long ea; /* Exception return address (pc) */
+ unsigned long orig_r7;
+};
+
+/*
+ * This i
