--- zzzz-none-000/linux-3.10.107/arch/arc/include/asm/ptrace.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/arch/arc/include/asm/ptrace.h 2021-02-04 17:41:59.000000000 +0000 @@ -16,74 +16,97 @@ /* THE pt_regs: Defines how regs are saved during entry into kernel */ +#ifdef CONFIG_ISA_ARCOMPACT struct pt_regs { + + /* 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; + /* - * 1 word gutter after reg-file has been saved - * Technically not needed, Since SP always points to a "full" location - * (vs. "empty"). But pt_regs is shared with tools.... + * 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 */ - long res; + 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; + }; - /* Real registers */ - long bta; /* bta_l1, bta_l2, erbta */ - long lp_start; - long lp_end; - long lp_count; - long status32; /* status32_l1, status32_l2, erstatus */ - long ret; /* ilink1, ilink2 or eret */ - long blink; - long fp; - long r26; /* gp */ - long r12; - long r11; - long r10; - long r9; - long r8; - long r7; - long r6; - long r5; - long r4; - long r3; - long r2; - long r1; - long r0; - long sp; /* user/kernel sp depending on where we came from */ - long orig_r0; + unsigned long user_r25; +}; +#else + +struct pt_regs { + + unsigned long orig_r0; - /*to distinguish bet excp, syscall, irq */ union { struct { #ifdef CONFIG_CPU_BIG_ENDIAN - /* so that assembly code is same for LE/BE */ - unsigned long orig_r8:16, event:16; + unsigned long state:8, ecr_vec:8, + ecr_cause:8, ecr_param:8; #else - unsigned long event:16, orig_r8:16; + unsigned long ecr_param:8, ecr_cause:8, + ecr_vec:8, state:8; #endif }; - long orig_r8_word; + 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; + + /*------- 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 { - long res; /* Again this is not needed */ - long r25; - long r24; - long r23; - long r22; - long r21; - long r20; - long r19; - long r18; - long r17; - long r16; - long r15; - long r14; - long r13; + unsigned long r25, r24, r23, r22, r21, r20, r19, r18, r17, r16, r15, r14, r13; }; -#define instruction_pointer(regs) (unsigned long)((regs)->ret) +#define instruction_pointer(regs) ((regs)->ret) #define profile_pc(regs) instruction_pointer(regs) /* return 1 if user mode or 0 if kernel mode */ @@ -101,32 +124,27 @@ /* return 1 if PC in delay slot */ #define delay_mode(regs) ((regs->status32 & STATUS_DE_MASK) == STATUS_DE_MASK) -#define in_syscall(regs) (regs->event & orig_r8_IS_SCALL) -#define in_brkpt_trap(regs) (regs->event & orig_r8_IS_BRKPT) +#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 syscall_wont_restart(regs) (regs->event |= orig_r8_IS_SCALL_RESTARTED) -#define syscall_restartable(regs) !(regs->event & orig_r8_IS_SCALL_RESTARTED) +#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 - 4) - 1; \ + (struct pt_regs *)(pg_start + THREAD_SIZE) - 1; \ }) static inline long regs_return_value(struct pt_regs *regs) { - return regs->r0; + return (long)regs->r0; } #endif /* !__ASSEMBLY__ */ -#define orig_r8_IS_SCALL 0x0001 -#define orig_r8_IS_SCALL_RESTARTED 0x0002 -#define orig_r8_IS_BRKPT 0x0004 -#define orig_r8_IS_EXCPN 0x0008 -#define orig_r8_IS_IRQ1 0x0010 -#define orig_r8_IS_IRQ2 0x0020 - #endif /* __ASM_PTRACE_H */