v4.19.13 snapshot.
diff --git a/arch/arc/include/asm/ptrace.h b/arch/arc/include/asm/ptrace.h
new file mode 100644
index 0000000..5a8cb22
--- /dev/null
+++ b/arch/arc/include/asm/ptrace.h
@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Amit Bhor, Sameer Dhavale: Codito Technologies 2004
+ */
+#ifndef __ASM_ARC_PTRACE_H
+#define __ASM_ARC_PTRACE_H
+
+#include <uapi/asm/ptrace.h>
+
+#ifndef __ASSEMBLY__
+
+/* THE pt_regs: Defines how regs are saved during entry into kernel */
+
+#ifdef CONFIG_ISA_ARCOMPACT
+struct pt_regs {
+
+#ifdef CONFIG_ARC_PLAT_EZNPS
+ unsigned long eflags; /* Extended FLAGS */
+ unsigned long gpa1; /* General Purpose Aux */
+#endif
+
+ /* Real registers */
+ unsigned long bta; /* bta_l1, bta_l2, erbta */
+
+ unsigned long lp_start, lp_end, lp_count;
+
+ unsigned long status32; /* status32_l1, status32_l2, erstatus */
+ unsigned long ret; /* ilink1, ilink2 or eret */
+ unsigned long blink;
+ unsigned long fp;
+ unsigned long r26; /* gp */
+
+ unsigned long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
+
+ unsigned long sp; /* User/Kernel depending on where we came from */
+ unsigned long orig_r0;
+
+ /*
+ * To distinguish bet excp, syscall, irq
+ * For traps and exceptions, Exception Cause Register.
+ * ECR: <00> <VV> <CC> <PP>
+ * Last word used by Linux for extra state mgmt (syscall-restart)
+ * For interrupts, use artificial ECR values to note current prio-level
+ */
+ union {
+ struct {
+#ifdef CONFIG_CPU_BIG_ENDIAN
+ unsigned long state:8, ecr_vec:8,
+ ecr_cause:8, ecr_param:8;
+#else
+ unsigned long ecr_param:8, ecr_cause:8,
+ ecr_vec:8, state:8;
+#endif
+ };
+ unsigned long event;
+ };
+
+ unsigned long user_r25;
+};
+#else
+
+struct pt_regs {
+
+ unsigned long orig_r0;
+
+ union {
+ struct {
+#ifdef CONFIG_CPU_BIG_ENDIAN
+ unsigned long state:8, ecr_vec:8,
+ ecr_cause:8, ecr_param:8;
+#else
+ unsigned long ecr_param:8, ecr_cause:8,
+ ecr_vec:8, state:8;
+#endif
+ };
+ unsigned long event;
+ };
+
+ unsigned long bta; /* bta_l1, bta_l2, erbta */
+
+ unsigned long user_r25;
+
+ unsigned long r26; /* gp */
+ unsigned long fp;
+ unsigned long sp; /* user/kernel sp depending on where we came from */
+
+ unsigned long r12, r30;
+
+#ifdef CONFIG_ARC_HAS_ACCL_REGS
+ unsigned long r58, r59; /* ACCL/ACCH used by FPU / DSP MPY */
+#endif
+
+ /*------- Below list auto saved by h/w -----------*/
+ unsigned long r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11;
+
+ unsigned long blink;
+ unsigned long lp_end, lp_start, lp_count;
+
+ unsigned long ei, ldi, jli;
+
+ unsigned long ret;
+ unsigned long status32;
+};
+
+#endif
+
+/* Callee saved registers - need to be saved only when you are scheduled out */
+
+struct callee_regs {
+ unsigned long r25, r24, r23, r22, r21, r20, r19, r18, r17, r16, r15, r14, r13;
+};
+
+#define instruction_pointer(regs) ((regs)->ret)
+#define profile_pc(regs) instruction_pointer(regs)
+
+/* return 1 if user mode or 0 if kernel mode */
+#define user_mode(regs) (regs->status32 & STATUS_U_MASK)
+
+#define user_stack_pointer(regs)\
+({ unsigned int sp; \
+ if (user_mode(regs)) \
+ sp = (regs)->sp;\
+ else \
+ sp = -1; \
+ sp; \
+})
+
+/* return 1 if PC in delay slot */
+#define delay_mode(regs) ((regs->status32 & STATUS_DE_MASK) == STATUS_DE_MASK)
+
+#define in_syscall(regs) ((regs->ecr_vec == ECR_V_TRAP) && !regs->ecr_param)
+#define in_brkpt_trap(regs) ((regs->ecr_vec == ECR_V_TRAP) && regs->ecr_param)
+
+#define STATE_SCALL_RESTARTED 0x01
+
+#define syscall_wont_restart(reg) (reg->state |= STATE_SCALL_RESTARTED)
+#define syscall_restartable(reg) !(reg->state & STATE_SCALL_RESTARTED)
+
+#define current_pt_regs() \
+({ \
+ /* open-coded current_thread_info() */ \
+ register unsigned long sp asm ("sp"); \
+ unsigned long pg_start = (sp & ~(THREAD_SIZE - 1)); \
+ (struct pt_regs *)(pg_start + THREAD_SIZE) - 1; \
+})
+
+static inline long regs_return_value(struct pt_regs *regs)
+{
+ return (long)regs->r0;
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* __ASM_PTRACE_H */