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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /arch/xtensa/include/asm/ptrace.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/xtensa/include/asm/ptrace.h')
-rw-r--r--arch/xtensa/include/asm/ptrace.h119
1 files changed, 119 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h
new file mode 100644
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--- /dev/null
+++ b/arch/xtensa/include/asm/ptrace.h
@@ -0,0 +1,119 @@
+/*
+ * include/asm-xtensa/ptrace.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.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+#ifndef _XTENSA_PTRACE_H
+#define _XTENSA_PTRACE_H
+
+#include <asm/kmem_layout.h>
+#include <uapi/asm/ptrace.h>
+
+/*
+ * Kernel stack
+ *
+ * +-----------------------+ -------- STACK_SIZE
+ * | register file | |
+ * +-----------------------+ |
+ * | struct pt_regs | |
+ * +-----------------------+ | ------ PT_REGS_OFFSET
+ * double : 16 bytes spill area : | ^
+ * excetion :- - - - - - - - - - - -: | |
+ * frame : struct pt_regs : | |
+ * :- - - - - - - - - - - -: | |
+ * | | | |
+ * | memory stack | | |
+ * | | | |
+ * ~ ~ ~ ~
+ * ~ ~ ~ ~
+ * | | | |
+ * | | | |
+ * +-----------------------+ | | --- STACK_BIAS
+ * | struct task_struct | | | ^
+ * current --> +-----------------------+ | | |
+ * | struct thread_info | | | |
+ * +-----------------------+ --------
+ */
+
+#define NO_SYSCALL (-1)
+
+#ifndef __ASSEMBLY__
+
+#include <asm/coprocessor.h>
+#include <asm/core.h>
+
+/*
+ * This struct defines the way the registers are stored on the
+ * kernel stack during a system call or other kernel entry.
+ */
+struct pt_regs {
+ unsigned long pc; /* 4 */
+ unsigned long ps; /* 8 */
+ unsigned long depc; /* 12 */
+ unsigned long exccause; /* 16 */
+ unsigned long excvaddr; /* 20 */
+ unsigned long debugcause; /* 24 */
+ unsigned long wmask; /* 28 */
+ unsigned long lbeg; /* 32 */
+ unsigned long lend; /* 36 */
+ unsigned long lcount; /* 40 */
+ unsigned long sar; /* 44 */
+ unsigned long windowbase; /* 48 */
+ unsigned long windowstart; /* 52 */
+ unsigned long syscall; /* 56 */
+ unsigned long icountlevel; /* 60 */
+ unsigned long scompare1; /* 64 */
+ unsigned long threadptr; /* 68 */
+
+ /* Additional configurable registers that are used by the compiler. */
+ xtregs_opt_t xtregs_opt;
+
+ /* Make sure the areg field is 16 bytes aligned. */
+ int align[0] __attribute__ ((aligned(16)));
+
+ /* current register frame.
+ * Note: The ESF for kernel exceptions ends after 16 registers!
+ */
+ unsigned long areg[XCHAL_NUM_AREGS];
+};
+
+# define arch_has_single_step() (1)
+# define task_pt_regs(tsk) ((struct pt_regs*) \
+ (task_stack_page(tsk) + KERNEL_STACK_SIZE) - 1)
+# define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
+# define instruction_pointer(regs) ((regs)->pc)
+# define return_pointer(regs) (MAKE_PC_FROM_RA((regs)->areg[0], \
+ (regs)->areg[1]))
+
+# ifndef CONFIG_SMP
+# define profile_pc(regs) instruction_pointer(regs)
+# else
+# define profile_pc(regs) \
+ ({ \
+ in_lock_functions(instruction_pointer(regs)) ? \
+ return_pointer(regs) : instruction_pointer(regs); \
+ })
+# endif
+
+#define user_stack_pointer(regs) ((regs)->areg[1])
+
+static inline unsigned long regs_return_value(struct pt_regs *regs)
+{
+ return regs->areg[2];
+}
+
+int do_syscall_trace_enter(struct pt_regs *regs);
+void do_syscall_trace_leave(struct pt_regs *regs);
+
+#else /* __ASSEMBLY__ */
+
+# include <asm/asm-offsets.h>
+#define PT_REGS_OFFSET (KERNEL_STACK_SIZE - PT_USER_SIZE)
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _XTENSA_PTRACE_H */