| entry.S (f163f0302ab69722c052519f4014814bf10026a9) | entry.S (24a9c54182b3758801b8ca6c8c237cc2ff654732) |
|---|---|
| 1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Copyright (C) 2012 Regents of the University of California 4 * Copyright (C) 2017 SiFive 5 */ 6 7#include <linux/init.h> 8#include <linux/linkage.h> --- 97 unchanged lines hidden (view full) --- 106.option norelax 107 la gp, __global_pointer$ 108.option pop 109 110#ifdef CONFIG_TRACE_IRQFLAGS 111 call __trace_hardirqs_off 112#endif 113 | 1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Copyright (C) 2012 Regents of the University of California 4 * Copyright (C) 2017 SiFive 5 */ 6 7#include <linux/init.h> 8#include <linux/linkage.h> --- 97 unchanged lines hidden (view full) --- 106.option norelax 107 la gp, __global_pointer$ 108.option pop 109 110#ifdef CONFIG_TRACE_IRQFLAGS 111 call __trace_hardirqs_off 112#endif 113 |
| 114#ifdef CONFIG_CONTEXT_TRACKING | 114#ifdef CONFIG_CONTEXT_TRACKING_USER |
| 115 /* If previous state is in user mode, call user_exit_callable(). */ 116 li a0, SR_PP 117 and a0, s1, a0 118 bnez a0, skip_context_tracking 119 call user_exit_callable 120skip_context_tracking: 121#endif 122 --- 48 unchanged lines hidden (view full) --- 171 /* 172 * When running is M-Mode (no MMU config), MPIE does not get set. 173 * As a result, we need to force enable interrupts here because 174 * handle_exception did not do set SR_IE as it always sees SR_PIE 175 * being cleared. 176 */ 177 csrs CSR_STATUS, SR_IE 178#endif | 115 /* If previous state is in user mode, call user_exit_callable(). */ 116 li a0, SR_PP 117 and a0, s1, a0 118 bnez a0, skip_context_tracking 119 call user_exit_callable 120skip_context_tracking: 121#endif 122 --- 48 unchanged lines hidden (view full) --- 171 /* 172 * When running is M-Mode (no MMU config), MPIE does not get set. 173 * As a result, we need to force enable interrupts here because 174 * handle_exception did not do set SR_IE as it always sees SR_PIE 175 * being cleared. 176 */ 177 csrs CSR_STATUS, SR_IE 178#endif |
| 179#if defined(CONFIG_TRACE_IRQFLAGS) || defined(CONFIG_CONTEXT_TRACKING) | 179#if defined(CONFIG_TRACE_IRQFLAGS) || defined(CONFIG_CONTEXT_TRACKING_USER) |
| 180 /* Recover a0 - a7 for system calls */ 181 REG_L a0, PT_A0(sp) 182 REG_L a1, PT_A1(sp) 183 REG_L a2, PT_A2(sp) 184 REG_L a3, PT_A3(sp) 185 REG_L a4, PT_A4(sp) 186 REG_L a5, PT_A5(sp) 187 REG_L a6, PT_A6(sp) --- 76 unchanged lines hidden (view full) --- 264 bnez s0, resume_kernel 265 266resume_userspace: 267 /* Interrupts must be disabled here so flags are checked atomically */ 268 REG_L s0, TASK_TI_FLAGS(tp) /* current_thread_info->flags */ 269 andi s1, s0, _TIF_WORK_MASK 270 bnez s1, work_pending 271 | 180 /* Recover a0 - a7 for system calls */ 181 REG_L a0, PT_A0(sp) 182 REG_L a1, PT_A1(sp) 183 REG_L a2, PT_A2(sp) 184 REG_L a3, PT_A3(sp) 185 REG_L a4, PT_A4(sp) 186 REG_L a5, PT_A5(sp) 187 REG_L a6, PT_A6(sp) --- 76 unchanged lines hidden (view full) --- 264 bnez s0, resume_kernel 265 266resume_userspace: 267 /* Interrupts must be disabled here so flags are checked atomically */ 268 REG_L s0, TASK_TI_FLAGS(tp) /* current_thread_info->flags */ 269 andi s1, s0, _TIF_WORK_MASK 270 bnez s1, work_pending 271 |
| 272#ifdef CONFIG_CONTEXT_TRACKING | 272#ifdef CONFIG_CONTEXT_TRACKING_USER |
| 273 call user_enter_callable 274#endif 275 276 /* Save unwound kernel stack pointer in thread_info */ 277 addi s0, sp, PT_SIZE_ON_STACK 278 REG_S s0, TASK_TI_KERNEL_SP(tp) 279 280 /* --- 322 unchanged lines hidden --- | 273 call user_enter_callable 274#endif 275 276 /* Save unwound kernel stack pointer in thread_info */ 277 addi s0, sp, PT_SIZE_ON_STACK 278 REG_S s0, TASK_TI_KERNEL_SP(tp) 279 280 /* --- 322 unchanged lines hidden --- |