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Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/include/asm/pci.h8
-rw-r--r--arch/xtensa/include/asm/ptrace.h1
-rw-r--r--arch/xtensa/kernel/ptrace.c56
3 files changed, 12 insertions, 53 deletions
diff --git a/arch/xtensa/include/asm/pci.h b/arch/xtensa/include/asm/pci.h
index 66410acf18b..4609b0f15f1 100644
--- a/arch/xtensa/include/asm/pci.h
+++ b/arch/xtensa/include/asm/pci.h
@@ -56,14 +56,6 @@ struct pci_dev;
#define PCI_DMA_BUS_IS_PHYS (1)
-/* pci_unmap_{page,single} is a no-op, so */
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
-#define pci_unmap_addr(PTR, ADDR_NAME) (0)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
-#define pci_ubnmap_len(PTR, LEN_NAME) (0)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
-
/* Map a range of PCI memory or I/O space for a device into user space */
int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
enum pci_mmap_state mmap_state, int write_combine);
diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h
index 905e1e61965..3c549f79872 100644
--- a/arch/xtensa/include/asm/ptrace.h
+++ b/arch/xtensa/include/asm/ptrace.h
@@ -113,6 +113,7 @@ struct pt_regs {
#include <variant/core.h>
+# define arch_has_single_step() (1)
# define task_pt_regs(tsk) ((struct pt_regs*) \
(task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
# define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
diff --git a/arch/xtensa/kernel/ptrace.c b/arch/xtensa/kernel/ptrace.c
index 9486882ef0a..9d4e1ceb3f0 100644
--- a/arch/xtensa/kernel/ptrace.c
+++ b/arch/xtensa/kernel/ptrace.c
@@ -30,6 +30,17 @@
#include <asm/elf.h>
#include <asm/coprocessor.h>
+
+void user_enable_single_step(struct task_struct *child)
+{
+ child->ptrace |= PT_SINGLESTEP;
+}
+
+void user_disable_single_step(struct task_struct *child)
+{
+ child->ptrace &= ~PT_SINGLESTEP;
+}
+
/*
* Called by kernel/ptrace.c when detaching to disable single stepping.
*/
@@ -268,51 +279,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
ret = ptrace_pokeusr(child, addr, data);
break;
- /* continue and stop at next (return from) syscall */
-
- case PTRACE_SYSCALL:
- case PTRACE_CONT: /* restart after signal. */
- {
- ret = -EIO;
- if (!valid_signal(data))
- break;
- if (request == PTRACE_SYSCALL)
- set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
- else
- clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
- child->exit_code = data;
- /* Make sure the single step bit is not set. */
- child->ptrace &= ~PT_SINGLESTEP;
- wake_up_process(child);
- ret = 0;
- break;
- }
-
- /*
- * make the child exit. Best I can do is send it a sigkill.
- * perhaps it should be put in the status that it wants to
- * exit.
- */
- case PTRACE_KILL:
- ret = 0;
- if (child->exit_state == EXIT_ZOMBIE) /* already dead */
- break;
- child->exit_code = SIGKILL;
- child->ptrace &= ~PT_SINGLESTEP;
- wake_up_process(child);
- break;
-
- case PTRACE_SINGLESTEP:
- ret = -EIO;
- if (!valid_signal(data))
- break;
- clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
- child->ptrace |= PT_SINGLESTEP;
- child->exit_code = data;
- wake_up_process(child);
- ret = 0;
- break;
-
case PTRACE_GETREGS:
ret = ptrace_getregs(child, (void __user *) data);
break;