| /* |
| * Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com> |
| * Copyright (c) 2018 Foundries.io Ltd |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /** |
| * @file |
| * @brief RISCV public exception handling |
| * |
| * RISCV-specific kernel exception handling interface. |
| */ |
| |
| #ifndef ZEPHYR_INCLUDE_ARCH_RISCV_EXP_H_ |
| #define ZEPHYR_INCLUDE_ARCH_RISCV_EXP_H_ |
| |
| #ifndef _ASMLANGUAGE |
| #include <zephyr/types.h> |
| #include <zephyr/toolchain.h> |
| |
| #ifdef CONFIG_RISCV_SOC_CONTEXT_SAVE |
| #include <soc_context.h> |
| #endif |
| |
| #ifdef CONFIG_RISCV_SOC_HAS_ISR_STACKING |
| #include <soc_isr_stacking.h> |
| #endif |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* |
| * The name of the structure which contains soc-specific state, if |
| * any, as well as the soc_esf_t typedef below, are part of the RISC-V |
| * arch API. |
| * |
| * The contents of the struct are provided by a SOC-specific |
| * definition in soc_context.h. |
| */ |
| #ifdef CONFIG_RISCV_SOC_CONTEXT_SAVE |
| struct soc_esf { |
| SOC_ESF_MEMBERS; |
| }; |
| #endif |
| |
| #if defined(CONFIG_RISCV_SOC_HAS_ISR_STACKING) |
| SOC_ISR_STACKING_ESF_DECLARE; |
| #else |
| struct __esf { |
| unsigned long ra; /* return address */ |
| |
| unsigned long t0; /* Caller-saved temporary register */ |
| unsigned long t1; /* Caller-saved temporary register */ |
| unsigned long t2; /* Caller-saved temporary register */ |
| #if !defined(CONFIG_RISCV_ISA_RV32E) |
| unsigned long t3; /* Caller-saved temporary register */ |
| unsigned long t4; /* Caller-saved temporary register */ |
| unsigned long t5; /* Caller-saved temporary register */ |
| unsigned long t6; /* Caller-saved temporary register */ |
| #endif /* !CONFIG_RISCV_ISA_RV32E */ |
| |
| unsigned long a0; /* function argument/return value */ |
| unsigned long a1; /* function argument */ |
| unsigned long a2; /* function argument */ |
| unsigned long a3; /* function argument */ |
| unsigned long a4; /* function argument */ |
| unsigned long a5; /* function argument */ |
| #if !defined(CONFIG_RISCV_ISA_RV32E) |
| unsigned long a6; /* function argument */ |
| unsigned long a7; /* function argument */ |
| #endif /* !CONFIG_RISCV_ISA_RV32E */ |
| |
| unsigned long mepc; /* machine exception program counter */ |
| unsigned long mstatus; /* machine status register */ |
| |
| unsigned long s0; /* callee-saved s0 */ |
| |
| #ifdef CONFIG_USERSPACE |
| unsigned long sp; /* preserved (user or kernel) stack pointer */ |
| #endif |
| |
| #ifdef CONFIG_RISCV_SOC_CONTEXT_SAVE |
| struct soc_esf soc_context; |
| #endif |
| } __aligned(16); |
| #endif /* CONFIG_RISCV_SOC_HAS_ISR_STACKING */ |
| |
| typedef struct __esf z_arch_esf_t; |
| #ifdef CONFIG_RISCV_SOC_CONTEXT_SAVE |
| typedef struct soc_esf soc_esf_t; |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _ASMLANGUAGE */ |
| |
| #endif /* ZEPHYR_INCLUDE_ARCH_RISCV_EXP_H_ */ |