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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a4c3733d32
Many of the privileged CSRs exist in a supervisor and machine version that are used very similarly. Provide versions of the CSR names and fields that map to either the S-mode or M-mode variant depending on a new CONFIG_RISCV_M_MODE kconfig symbol. Contains contributions from Damien Le Moal <Damien.LeMoal@wdc.com> and Paul Walmsley <paul.walmsley@sifive.com>. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> # for drivers/clocksource, drivers/irqchip [paul.walmsley@sifive.com: updated to apply] Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
107 lines
2.1 KiB
C
107 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 Regents of the University of California
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*/
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#ifndef _ASM_RISCV_PTRACE_H
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#define _ASM_RISCV_PTRACE_H
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#include <uapi/asm/ptrace.h>
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#include <asm/csr.h>
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#ifndef __ASSEMBLY__
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struct pt_regs {
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unsigned long epc;
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unsigned long ra;
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unsigned long sp;
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unsigned long gp;
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unsigned long tp;
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unsigned long t0;
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unsigned long t1;
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unsigned long t2;
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unsigned long s0;
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unsigned long s1;
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unsigned long a0;
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unsigned long a1;
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unsigned long a2;
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unsigned long a3;
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unsigned long a4;
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unsigned long a5;
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unsigned long a6;
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unsigned long a7;
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unsigned long s2;
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unsigned long s3;
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unsigned long s4;
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unsigned long s5;
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unsigned long s6;
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unsigned long s7;
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unsigned long s8;
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unsigned long s9;
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unsigned long s10;
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unsigned long s11;
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unsigned long t3;
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unsigned long t4;
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unsigned long t5;
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unsigned long t6;
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/* Supervisor/Machine CSRs */
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unsigned long status;
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unsigned long badaddr;
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unsigned long cause;
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/* a0 value before the syscall */
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unsigned long orig_a0;
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};
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#ifdef CONFIG_64BIT
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#define REG_FMT "%016lx"
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#else
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#define REG_FMT "%08lx"
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#endif
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#define user_mode(regs) (((regs)->status & SR_PP) == 0)
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/* Helpers for working with the instruction pointer */
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static inline unsigned long instruction_pointer(struct pt_regs *regs)
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{
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return regs->epc;
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}
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static inline void instruction_pointer_set(struct pt_regs *regs,
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unsigned long val)
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{
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regs->epc = val;
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}
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#define profile_pc(regs) instruction_pointer(regs)
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/* Helpers for working with the user stack pointer */
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static inline unsigned long user_stack_pointer(struct pt_regs *regs)
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{
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return regs->sp;
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}
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static inline void user_stack_pointer_set(struct pt_regs *regs,
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unsigned long val)
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{
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regs->sp = val;
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}
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/* Helpers for working with the frame pointer */
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static inline unsigned long frame_pointer(struct pt_regs *regs)
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{
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return regs->s0;
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}
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static inline void frame_pointer_set(struct pt_regs *regs,
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unsigned long val)
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{
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regs->s0 = val;
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}
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static inline unsigned long regs_return_value(struct pt_regs *regs)
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{
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return regs->a0;
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}
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_RISCV_PTRACE_H */
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