esp-idf/components/riscv/vectors_clic.S

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5.7 KiB
ArmAsm

/*
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "sdkconfig.h"
#include "soc/soc.h"
/* If memory protection interrupts are meant to trigger a panic, attach them to panic handler,
* else, attach them to the interrupt handler. */
#if CONFIG_ESP_SYSTEM_MEMPROT_FEATURE
#define MEMPROT_ISR _panic_handler
#else
#define MEMPROT_ISR _interrupt_handler
#endif // CONFIG_ESP_SYSTEM_MEMPROT_FEATURE
#if CONFIG_ESP_IPC_ISR_ENABLE
#define IPC_ISR_HANDLER esp_ipc_isr_handler
#else
#define IPC_ISR_HANDLER _interrupt_handler
#endif // CONFIG_ESP_IPC_ISR_ENABLE
/* The system interrupts are not used for now, so trigger a panic every time one occurs. */
#define _system_int_handler _panic_handler
/* Handlers defined in the `vector.S` file, common to all RISC-V targets */
.global _interrupt_handler
.global _panic_handler
.section .exception_vectors_table.text
/* Prevent the compiler from generating 2-byte instruction in the vector tables */
.option push
.option norvc
/**
* Non-hardware vectored interrupt entry. MTVEC CSR points here.
*
* On targets that use CLIC as their interrupt controller, when an exception occurs, the CPU
* jumps to the address stored in MTVEC[31:6] << 6. The CPU will also jump to this location
* if an interrupt is configured as non-vectored (CLIC_INT_ATTR.shv = 0).
*
* Because of the left-shift `<< 6`, this entry must be aligned on 64.
*/
.global _vector_table
.type _vector_table, @function
.balign 0x40
_vector_table:
j _panic_handler
.size _vector_table, .-_vector_table
/**
* Vectored interrupt table. MTVT CSR points here.
*
* If an interrupt occurs and is configured as (hardware) vectored, the CPU will jump to
* MTVT[31:0] + 4 * interrupt_id
*
* In the case of the ESP32P4, the interrupt matrix, between the CPU interrupt lines
* and the peripherals, offers 32 lines. As such, the interrupt_id between 0 and 31.
*
* Since the interrupts are initialized as vectored on CPU start, we can manage the special
* interrupts ETS_T1_WDT_INUM, ETS_CACHEERR_INUM and ETS_MEMPROT_ERR_INUM here.
*/
.balign 0x40
.global _mtvt_table
.type _mtvt_table, @function
_mtvt_table:
.word _system_int_handler /* 0: System interrupt number. Exceptions are non-vectored, won't load this. */
.word _system_int_handler /* 1: System interrupt number */
.word _system_int_handler /* 2: System interrupt number */
.word _system_int_handler /* 3: System interrupt number */
.word _system_int_handler /* 4: System interrupt number */
.word _system_int_handler /* 5: System interrupt number */
.word _system_int_handler /* 6: System interrupt number */
.word _system_int_handler /* 7: System interrupt number */
.word _system_int_handler /* 8: System interrupt number */
.word _system_int_handler /* 9: System interrupt number */
.word _system_int_handler /* 10: System interrupt number */
.word _system_int_handler /* 11: System interrupt number */
.word _system_int_handler /* 12: System interrupt number */
.word _system_int_handler /* 13: System interrupt number */
.word _system_int_handler /* 14: System interrupt number */
.word _system_int_handler /* 15: System interrupt number */
.word _interrupt_handler /* 16: Free interrupt number */
.word _interrupt_handler /* 17: Free interrupt number */
.word _interrupt_handler /* 18: Free interrupt number */
.word _interrupt_handler /* 19: Free interrupt number */
.word _interrupt_handler /* 20: Free interrupt number */
.word _interrupt_handler /* 21: Free interrupt number */
.word _interrupt_handler /* 22: Free interrupt number */
.word _interrupt_handler /* 23: Free interrupt number */
.word _interrupt_handler /* 24: Free interrupt number */
.word _interrupt_handler /* 25: Free interrupt number */
.word _interrupt_handler /* 26: Free interrupt number */
.word _interrupt_handler /* 27: Free interrupt number */
.word _interrupt_handler /* 28: Free interrupt number */
.word _interrupt_handler /* 29: Free interrupt number */
.word _interrupt_handler /* 30: Free interrupt number */
.word _interrupt_handler /* 31: Free interrupt number */
.word _interrupt_handler /* 32: Free interrupt number */
.word _interrupt_handler /* 33: Free interrupt number */
.word _interrupt_handler /* 34: Free interrupt number */
.word _interrupt_handler /* 35: Free interrupt number */
.word _interrupt_handler /* 36: Free interrupt number */
.word _interrupt_handler /* 37: Free interrupt number */
.word _interrupt_handler /* 38: Free interrupt number */
.word _interrupt_handler /* 39: Free interrupt number */
.word _panic_handler /* 40: ETS_INT_WDT_INUM (+16) panic-interrupt (soc-level panic) */
.word _panic_handler /* 41: ETS_CACHEERR_INUM (+16) panic-interrupt (soc-level panic) */
.word MEMPROT_ISR /* 42: ETS_MEMPROT_ERR_INUM (+16) handler (soc-level panic) */
.word _interrupt_handler /* 43: Free interrupt number */
.word IPC_ISR_HANDLER /* 44: ETS_IPC_ISR_INUM (+16) handler*/
.word _interrupt_handler /* 45: Free interrupt number */
.word _interrupt_handler /* 46: Free interrupt number */
.word _interrupt_handler /* 47: Free interrupt number */
.size _mtvt_table, .-_mtvt_table
.option pop