?? reg.h
字號(hào):
#ifndef __LX_REG_H__#define __LX_REG_H__#include "mips/cpu.h"#include "mips/prid.h" #include "mips.h"/* MIPS pt_regs offsets. */#define PT_R0 24#define PT_R1 28#define PT_R2 32#define PT_R3 36#define PT_R4 40#define PT_R5 44#define PT_R6 48#define PT_R7 52#define PT_R8 56#define PT_R9 60#define PT_R10 64#define PT_R11 68#define PT_R12 72#define PT_R13 76#define PT_R14 80#define PT_R15 84#define PT_R16 88#define PT_R17 92#define PT_R18 96#define PT_R19 100#define PT_R20 104#define PT_R21 108#define PT_R22 112#define PT_R23 116#define PT_R24 120#define PT_R25 124#define PT_R26 128#define PT_R27 132#define PT_R28 136#define PT_R29 140#define PT_R30 144#define PT_R31 148#define PT_LO 152#define PT_HI 156#define PT_EPC 160#define PT_BVADDR 164#define PT_STATUS 168#define PT_CAUSE 172#define PT_SIZE 176/* MIPS task_struct offsets. */#define TASK_STATE 0#define TASK_FLAGS 4#define TASK_SIGPENDING 8#define TASK_NEED_RESCHED 20#define TASK_COUNTER 24#define TASK_PRIORITY 28#define TASK_MM 928/* MIPS specific thread_struct offsets. */#define THREAD_REG16 560#define THREAD_REG17 564#define THREAD_REG18 568#define THREAD_REG19 572#define THREAD_REG20 576#define THREAD_REG21 580#define THREAD_REG22 584#define THREAD_REG23 588#define THREAD_REG29 592#define THREAD_REG30 596#define THREAD_REG31 600#define THREAD_STATUS 604#define THREAD_FPU 608#define THREAD_BVADDR 872#define THREAD_BUADDR 876#define THREAD_ECODE 880#define THREAD_TRAPNO 884#define THREAD_PGDIR 888#define THREAD_MFLAGS 892#define THREAD_CURDS 896#define THREAD_TRAMP 900#define THREAD_OLDCTX 904#define THREAD_DSEEPC 908#define THREAD_DSEAERPC 912/* Linux mm_struct offsets. */#define MM_COUNT 16#define MM_PGD 12#define MM_CONTEXT 36/* Linux sigcontext offsets. */#define SC_REGMASK 0#define SC_STATUS 4#define SC_PC 8#define SC_REGS 16#define SC_FPREGS 272#define SC_OWNEDFP 528#define SC_FPC_CSR 532#define SC_FPC_EIR 536#define SC_SSFLAGS 540#define SC_MDHI 544#define SC_MDLO 552#define SC_CAUSE 560#define SC_BADVADDR 564#define SC_SIGSET 568#define SAVE_AT \ sw $1, PT_R1(sp)#define SAVE_TEMP \ mfhi v1; \ sw $8, PT_R8(sp); \ sw $9, PT_R9(sp); \ sw v1, PT_HI(sp); \ mflo v1; \ sw $10,PT_R10(sp); \ sw $11, PT_R11(sp); \ sw v1, PT_LO(sp); \ sw $12, PT_R12(sp); \ sw $13, PT_R13(sp); \ sw $14, PT_R14(sp); \ sw $15, PT_R15(sp); \ sw $24, PT_R24(sp)#define SAVE_STATIC \ sw $16, PT_R16(sp); \ sw $17, PT_R17(sp); \ sw $18, PT_R18(sp); \ sw $19, PT_R19(sp); \ sw $20, PT_R20(sp); \ sw $21, PT_R21(sp); \ sw $22, PT_R22(sp); \ sw $23, PT_R23(sp); \ sw $30, PT_R30(sp)#define __str2(x) #x#define __str(x) __str2(x)#define save_static(frame) \ __asm__ __volatile__( \ "sw\t$16,"__str(PT_R16)"(%0)\n\t" \ "sw\t$17,"__str(PT_R17)"(%0)\n\t" \ "sw\t$18,"__str(PT_R18)"(%0)\n\t" \ "sw\t$19,"__str(PT_R19)"(%0)\n\t" \ "sw\t$20,"__str(PT_R20)"(%0)\n\t" \ "sw\t$21,"__str(PT_R21)"(%0)\n\t" \ "sw\t$22,"__str(PT_R22)"(%0)\n\t" \ "sw\t$23,"__str(PT_R23)"(%0)\n\t" \ "sw\t$30,"__str(PT_R30)"(%0)\n\t" \ : /* No outputs */ \ : "r" (frame))#define SAVE_SOME \ .set push; \ .set reorder; \ mfc0 k0,C0_STATUS; \ sll k0, 3; /* extract cu0 bit */ \ .set noreorder; \ bltz k0, 8f; \ move k1, sp; \8: \ move k0, sp; \ subu sp, k1, PT_SIZE; \ sw k0, PT_R29(sp); \ sw $3, PT_R3(sp); \ sw $0, PT_R0(sp); \ mfc0 v1, C0_STATUS; \ sw $2, PT_R2(sp); \ sw v1, PT_STATUS(sp); \ sw $4, PT_R4(sp); \ mfc0 v1, C0_CAUSE; \ sw $5, PT_R5(sp); \ sw v1, PT_CAUSE(sp); \ sw $6, PT_R6(sp); \ mfc0 v1, C0_EPC; \ sw $7, PT_R7(sp); \ sw v1, PT_EPC(sp); \ sw $25, PT_R25(sp); \ sw $28, PT_R28(sp); \ sw $31, PT_R31(sp); \ ori $28, sp, 0x1fff; \ xori $28, 0x1fff; \ .set pop#define SAVE_ALL \ SAVE_SOME; \ SAVE_AT; \ SAVE_TEMP; \ SAVE_STATIC#define RESTORE_AT \ lw $1, PT_R1(sp); \#define RESTORE_SP \ lw sp, PT_R29(sp)#define RESTORE_TEMP \ lw $24, PT_LO(sp); \ lw $8, PT_R8(sp); \ lw $9, PT_R9(sp); \ mtlo $24; \ lw $24, PT_HI(sp); \ lw $10,PT_R10(sp); \ lw $11, PT_R11(sp); \ mthi $24; \ lw $12, PT_R12(sp); \ lw $13, PT_R13(sp); \ lw $14, PT_R14(sp); \ lw $15, PT_R15(sp); \ lw $24, PT_R24(sp)#define RESTORE_STATIC \ lw $16, PT_R16(sp); \ lw $17, PT_R17(sp); \ lw $18, PT_R18(sp); \ lw $19, PT_R19(sp); \ lw $20, PT_R20(sp); \ lw $21, PT_R21(sp); \ lw $22, PT_R22(sp); \ lw $23, PT_R23(sp); \ lw $30, PT_R30(sp)#define RESTORE_SOME \ .set push; \ .set reorder; \ mfc0 t0, C0_STATUS; \ .set pop; \ ori t0, 0x1f; \ xori t0, 0x1f; \ mtc0 t0, C0_STATUS; \ li v1, 0xff00; \ and t0, v1; \ lw v0, PT_STATUS(sp); \ nor v1, $0, v1; \ and v0, v1; \ or v0, t0; \ mtc0 v0, C0_STATUS; \ lw v1, PT_EPC(sp); \ mtc0 v1, C0_EPC; \ lw $31, PT_R31(sp); \ lw $28, PT_R28(sp); \ lw $25, PT_R25(sp); \ lw $7, PT_R7(sp); \ lw $6, PT_R6(sp); \ lw $5, PT_R5(sp); \ lw $4, PT_R4(sp); \ lw $3, PT_R3(sp); \ lw $2, PT_R2(sp)#define RESTORE_ALL \ RESTORE_SOME; \ RESTORE_AT; \ RESTORE_TEMP; \ RESTORE_STATIC; \ RESTORE_SP/* * Move to kernel mode and disable interrupts. * Set cp0 enable bit as sign that we're running on the kernel stack */#define CLI \ mfc0 t0,C0_STATUS; \ li t1,ST0_CU0|0x1f; \ or t0,t1; \ xori t0,0x1f; \ mtc0 t0,CP0_STATUS/* * Move to kernel mode and enable interrupts. * Set cp0 enable bit as sign that we're running on the kernel stack */#define STI \ mfc0 t0,C0_STATUS; \ li t1,ST0_CU0|0x1f; \ or t0,t1; \ xori t0,0x1e; \ mtc0 t0,C0_STATUS/* * Just move to kernel mode and leave interrupts as they are. * Set cp0 enable bit as sign that we're running on the kernel stack */#define KMODE \ mfc0 t0,C0_STATUS; \ li t1,ST0_CU0|0x1e; \ or t0,t1; \ xori t0,0x1e; \ mtc0 t0,C0_STATUS#endif /* __LX_REG_H__ */?? 快捷鍵說明
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