diff options
| -rw-r--r-- | arch/arm64/include/asm/asm-offsets.h | 1 | ||||
| -rw-r--r-- | arch/arm64/include/asm/assembler.h | 109 | ||||
| -rw-r--r-- | arch/arm64/kernel/asm-offsets.c | 108 | ||||
| -rw-r--r-- | arch/arm64/mm/proc-macros.S | 55 |
4 files changed, 273 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/asm-offsets.h b/arch/arm64/include/asm/asm-offsets.h new file mode 100644 index 000000000000..d370ee36a182 --- /dev/null +++ b/arch/arm64/include/asm/asm-offsets.h @@ -0,0 +1 @@ +#include <generated/asm-offsets.h> diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h new file mode 100644 index 000000000000..da2a13e8f1e6 --- /dev/null +++ b/arch/arm64/include/asm/assembler.h @@ -0,0 +1,109 @@ +/* + * Based on arch/arm/include/asm/assembler.h + * + * Copyright (C) 1996-2000 Russell King + * Copyright (C) 2012 ARM Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#ifndef __ASSEMBLY__ +#error "Only include this from assembly code" +#endif + +#include <asm/ptrace.h> + +/* + * Stack pushing/popping (register pairs only). Equivalent to store decrement + * before, load increment after. + */ + .macro push, xreg1, xreg2 + stp \xreg1, \xreg2, [sp, #-16]! + .endm + + .macro pop, xreg1, xreg2 + ldp \xreg1, \xreg2, [sp], #16 + .endm + +/* + * Enable and disable interrupts. + */ + .macro disable_irq + msr daifset, #2 + .endm + + .macro enable_irq + msr daifclr, #2 + .endm + +/* + * Save/disable and restore interrupts. + */ + .macro save_and_disable_irqs, olddaif + mrs \olddaif, daif + disable_irq + .endm + + .macro restore_irqs, olddaif + msr daif, \olddaif + .endm + +/* + * Enable and disable debug exceptions. + */ + .macro disable_dbg + msr daifset, #8 + .endm + + .macro enable_dbg + msr daifclr, #8 + .endm + + .macro disable_step, tmp + mrs \tmp, mdscr_el1 + bic \tmp, \tmp, #1 + msr mdscr_el1, \tmp + .endm + + .macro enable_step, tmp + mrs \tmp, mdscr_el1 + orr \tmp, \tmp, #1 + msr mdscr_el1, \tmp + .endm + + .macro enable_dbg_if_not_stepping, tmp + mrs \tmp, mdscr_el1 + tbnz \tmp, #1, 9990f + enable_dbg +9990: + .endm + +/* + * SMP data memory barrier + */ + .macro smp_dmb, opt +#ifdef CONFIG_SMP + dmb \opt +#endif + .endm + +#define USER(l, x...) \ +9999: x; \ + .section __ex_table,"a"; \ + .align 3; \ + .quad 9999b,l; \ + .previous + +/* + * Register aliases. + */ +lr .req x30 // link register diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c new file mode 100644 index 000000000000..a2a4d810bea3 --- /dev/null +++ b/arch/arm64/kernel/asm-offsets.c @@ -0,0 +1,108 @@ +/* + * Based on arch/arm/kernel/asm-offsets.c + * + * Copyright (C) 1995-2003 Russell King + * 2001-2002 Keith Owens + * Copyright (C) 2012 ARM Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/dma-mapping.h> +#include <asm/thread_info.h> +#include <asm/memory.h> +#include <asm/cputable.h> +#include <asm/vdso_datapage.h> +#include <linux/kbuild.h> + +int main(void) +{ + DEFINE(TSK_ACTIVE_MM, offsetof(struct task_struct, active_mm)); + BLANK(); + DEFINE(TI_FLAGS, offsetof(struct thread_info, flags)); + DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count)); + DEFINE(TI_ADDR_LIMIT, offsetof(struct thread_info, addr_limit)); + DEFINE(TI_TASK, offsetof(struct thread_info, task)); + DEFINE(TI_EXEC_DOMAIN, offsetof(struct thread_info, exec_domain)); + DEFINE(TI_CPU, offsetof(struct thread_info, cpu)); + BLANK(); + DEFINE(THREAD_CPU_CONTEXT, offsetof(struct task_struct, thread.cpu_context)); + BLANK(); + DEFINE(S_X0, offsetof(struct pt_regs, regs[0])); + DEFINE(S_X1, offsetof(struct pt_regs, regs[1])); + DEFINE(S_X2, offsetof(struct pt_regs, regs[2])); + DEFINE(S_X3, offsetof(struct pt_regs, regs[3])); + DEFINE(S_X4, offsetof(struct pt_regs, regs[4])); + DEFINE(S_X5, offsetof(struct pt_regs, regs[5])); + DEFINE(S_X6, offsetof(struct pt_regs, regs[6])); + DEFINE(S_X7, offsetof(struct pt_regs, regs[7])); + DEFINE(S_LR, offsetof(struct pt_regs, regs[30])); + DEFINE(S_SP, offsetof(struct pt_regs, sp)); +#ifdef CONFIG_COMPAT + DEFINE(S_COMPAT_SP, offsetof(struct pt_regs, compat_sp)); +#endif + DEFINE(S_PSTATE, offsetof(struct pt_regs, pstate)); + DEFINE(S_PC, offsetof(struct pt_regs, pc)); + DEFINE(S_ORIG_X0, offsetof(struct pt_regs, orig_x0)); + DEFINE(S_SYSCALLNO, offsetof(struct pt_regs, syscallno)); + DEFINE(S_FRAME_SIZE, sizeof(struct pt_regs)); + BLANK(); + DEFINE(MM_CONTEXT_ID, offsetof(struct mm_struct, context.id)); + BLANK(); + DEFINE(VMA_VM_MM, offsetof(struct vm_area_struct, vm_mm)); + DEFINE(VMA_VM_FLAGS, offsetof(struct vm_area_struct, vm_flags)); + BLANK(); + DEFINE(VM_EXEC, VM_EXEC); + BLANK(); + DEFINE(PAGE_SZ, PAGE_SIZE); + BLANK(); + DEFINE(CPU_INFO_SZ, sizeof(struct cpu_info)); + DEFINE(CPU_INFO_SETUP, offsetof(struct cpu_info, cpu_setup)); + BLANK(); + DEFINE(DMA_BIDIRECTIONAL, DMA_BIDIRECTIONAL); + DEFINE(DMA_TO_DEVICE, DMA_TO_DEVICE); + DEFINE(DMA_FROM_DEVICE, DMA_FROM_DEVICE); + BLANK(); + DEFINE(CLOCK_REALTIME, CLOCK_REALTIME); + DEFINE(CLOCK_MONOTONIC, CLOCK_MONOTONIC); + DEFINE(CLOCK_REALTIME_RES, MONOTONIC_RES_NSEC); + DEFINE(CLOCK_REALTIME_COARSE, CLOCK_REALTIME_COARSE); + DEFINE(CLOCK_MONOTONIC_COARSE,CLOCK_MONOTONIC_COARSE); + DEFINE(CLOCK_COARSE_RES, LOW_RES_NSEC); + DEFINE(NSEC_PER_SEC, NSEC_PER_SEC); + BLANK(); + DEFINE(VDSO_CS_CYCLE_LAST, offsetof(struct vdso_data, cs_cycle_last)); + DEFINE(VDSO_XTIME_CLK_SEC, offsetof(struct vdso_data, xtime_clock_sec)); + DEFINE(VDSO_XTIME_CLK_NSEC, offsetof(struct vdso_data, xtime_clock_nsec)); + DEFINE(VDSO_XTIME_CRS_SEC, offsetof(struct vdso_data, xtime_coarse_sec)); + DEFINE(VDSO_XTIME_CRS_NSEC, offsetof(struct vdso_data, xtime_coarse_nsec)); + DEFINE(VDSO_WTM_CLK_SEC, offsetof(struct vdso_data, wtm_clock_sec)); + DEFINE(VDSO_WTM_CLK_NSEC, offsetof(struct vdso_data, wtm_clock_nsec)); + DEFINE(VDSO_TB_SEQ_COUNT, offsetof(struct vdso_data, tb_seq_count)); + DEFINE(VDSO_CS_MULT, offsetof(struct vdso_data, cs_mult)); + DEFINE(VDSO_CS_SHIFT, offsetof(struct vdso_data, cs_shift)); + DEFINE(VDSO_TZ_MINWEST, offsetof(struct vdso_data, tz_minuteswest)); + DEFINE(VDSO_TZ_DSTTIME, offsetof(struct vdso_data, tz_dsttime)); + DEFINE(VDSO_USE_SYSCALL, offsetof(struct vdso_data, use_syscall)); + BLANK(); + DEFINE(TVAL_TV_SEC, offsetof(struct timeval, tv_sec)); + DEFINE(TVAL_TV_USEC, offsetof(struct timeval, tv_usec)); + DEFINE(TSPEC_TV_SEC, offsetof(struct timespec, tv_sec)); + DEFINE(TSPEC_TV_NSEC, offsetof(struct timespec, tv_nsec)); + BLANK(); + DEFINE(TZ_MINWEST, offsetof(struct timezone, tz_minuteswest)); + DEFINE(TZ_DSTTIME, offsetof(struct timezone, tz_dsttime)); + return 0; +} diff --git a/arch/arm64/mm/proc-macros.S b/arch/arm64/mm/proc-macros.S new file mode 100644 index 000000000000..8957b822010b --- /dev/null +++ b/arch/arm64/mm/proc-macros.S @@ -0,0 +1,55 @@ +/* + * Based on arch/arm/mm/proc-macros.S + * + * Copyright (C) 2012 ARM Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <asm/asm-offsets.h> +#include <asm/thread_info.h> + +/* + * vma_vm_mm - get mm pointer from vma pointer (vma->vm_mm) + */ + .macro vma_vm_mm, rd, rn + ldr \rd, [\rn, #VMA_VM_MM] + .endm + +/* + * mmid - get context id from mm pointer (mm->context.id) + */ + .macro mmid, rd, rn + ldr \rd, [\rn, #MM_CONTEXT_ID] + .endm + +/* + * dcache_line_size - get the minimum D-cache line size from the CTR register. + */ + .macro dcache_line_size, reg, tmp + mrs \tmp, ctr_el0 // read CTR + lsr \tmp, \tmp, #16 + and \tmp, \tmp, #0xf // cache line size encoding + mov \reg, #4 // bytes per word + lsl \reg, \reg, \tmp // actual cache line size + .endm + +/* + * icache_line_size - get the minimum I-cache line size from the CTR register. + */ + .macro icache_line_size, reg, tmp + mrs \tmp, ctr_el0 // read CTR + and \tmp, \tmp, #0xf // cache line size encoding + mov \reg, #4 // bytes per word + lsl \reg, \reg, \tmp // actual cache line size + .endm |
