/**************************************************************************** * arch/misoc/include/lm32/irq.h * * Copyright (C) 2016 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * Ramtin Amin * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ #ifndef __ARCH_MISOC_INCLUDE_LM32_IRQ_H #define __ARCH_MISOC_INCLUDE_LM32_IRQ_H /**************************************************************************** * Included Files ****************************************************************************/ #include #include /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* 32 True interrupts plus the sofware interrupt */ #define LM32_NINTERRUPTS 32 #define LM32_IRQ_SWINT 32 #define NR_IRQS 33 /* Registers */ #define REG_X0_NDX 0 /* Holds the value zero */ #define REG_X1_NDX 1 /* General-purpose/argument 0/return value 0 */ #define REG_X2_NDX 2 /* General-purpose/argument 1/return value 1 */ #define REG_X3_NDX 3 /* General-purpose/argument 2 */ #define REG_X4_NDX 4 /* General-purpose/argument 3 */ #define REG_X5_NDX 5 /* General-purpose/argument 4 */ #define REG_X6_NDX 6 /* General-purpose/argument 5 */ #define REG_X7_NDX 7 /* General-purpose/argument 6 */ #define REG_X8_NDX 8 /* General-purpose/argument 7 */ #define REG_X9_NDX 9 /* General-purpose */ #define REG_X10_NDX 10 /* General-purpose */ #define REG_X11_NDX 11 /* General-purpose */ #define REG_X12_NDX 12 /* General-purpose */ #define REG_X13_NDX 13 /* General-purpose */ #define REG_X14_NDX 14 /* General-purpose */ #define REG_X15_NDX 15 /* General-purpose */ #define REG_X16_NDX 16 /* General-purpose */ #define REG_X17_NDX 17 /* General-purpose */ #define REG_X18_NDX 18 /* General-purpose */ #define REG_X19_NDX 19 /* General-purpose */ #define REG_X20_NDX 20 /* General-purpose */ #define REG_X21_NDX 21 /* General-purpose */ #define REG_X22_NDX 22 /* General-purpose */ #define REG_X23_NDX 23 /* General-purpose */ #define REG_X24_NDX 24 /* General-purpose */ #define REG_X25_NDX 25 /* General-purpose */ #define REG_X26_NDX 26 /* General-purpose/global pointer */ #define REG_X27_NDX 27 /* General-purpose/frame pointer */ #define REG_X28_NDX 28 /* Stack pointer */ #define REG_X29_NDX 29 /* General-purpose/return address */ #define REG_X30_NDX 30 /* Exception address */ #define REG_X31_NDX 31 /* Breakpoint address */ #define REG_X32_NDX 32 /* Reg IE */ /* Interrupt Context register */ #define XCPTCONTEXT_REGS 33 #define XCPTCONTEXT_SIZE (4 * XCPTCONTEXT_REGS) #ifdef __ASSEMBLY__ # define REG_X0 (4*REG_X0_NDX) # define REG_X1 (4*REG_X1_NDX) # define REG_X2 (4*REG_X2_NDX) # define REG_X3 (4*REG_X3_NDX) # define REG_X4 (4*REG_X4_NDX) # define REG_X5 (4*REG_X5_NDX) # define REG_X6 (4*REG_X6_NDX) # define REG_X7 (4*REG_X7_NDX) # define REG_X8 (4*REG_X8_NDX) # define REG_X9 (4*REG_X9_NDX) # define REG_X10 (4*REG_X10_NDX) # define REG_X11 (4*REG_X11_NDX) # define REG_X12 (4*REG_X12_NDX) # define REG_X13 (4*REG_X13_NDX) # define REG_X14 (4*REG_X14_NDX) # define REG_X15 (4*REG_X15_NDX) # define REG_X16 (4*REG_X16_NDX) # define REG_X17 (4*REG_X17_NDX) # define REG_X18 (4*REG_X18_NDX) # define REG_X19 (4*REG_X19_NDX) # define REG_X20 (4*REG_X20_NDX) # define REG_X21 (4*REG_X21_NDX) # define REG_X22 (4*REG_X22_NDX) # define REG_X23 (4*REG_X23_NDX) # define REG_X24 (4*REG_X24_NDX) # define REG_X25 (4*REG_X25_NDX) # define REG_X26 (4*REG_X26_NDX) # define REG_X27 (4*REG_X27_NDX) # define REG_X28 (4*REG_X28_NDX) # define REG_X29 (4*REG_X29_NDX) # define REG_X30 (4*REG_X30_NDX) # define REG_X31 (4*REG_X31_NDX) # define REG_INT_CTX (4*REG_X32_NDX) #else # define REG_X0 REG_X0_NDX # define REG_X1 REG_X1_NDX # define REG_X2 REG_X2_NDX # define REG_X3 REG_X3_NDX # define REG_X4 REG_X4_NDX # define REG_X5 REG_X5_NDX # define REG_X6 REG_X6_NDX # define REG_X7 REG_X7_NDX # define REG_X8 REG_X8_NDX # define REG_X9 REG_X9_NDX # define REG_X10 REG_X10_NDX # define REG_X11 REG_X11_NDX # define REG_X12 REG_X12_NDX # define REG_X13 REG_X13_NDX # define REG_X14 REG_X14_NDX # define REG_X15 REG_X15_NDX # define REG_X16 REG_X16_NDX # define REG_X17 REG_X17_NDX # define REG_X18 REG_X18_NDX # define REG_X19 REG_X19_NDX # define REG_X20 REG_X20_NDX # define REG_X21 REG_X21_NDX # define REG_X22 REG_X22_NDX # define REG_X23 REG_X23_NDX # define REG_X24 REG_X24_NDX # define REG_X25 REG_X25_NDX # define REG_X26 REG_X26_NDX # define REG_X27 REG_X27_NDX # define REG_X28 REG_X28_NDX # define REG_X29 REG_X29_NDX # define REG_X30 REG_X30_NDX # define REG_X31 REG_X31_NDX # define REG_INT_CTX REG_X32_NDX #endif /* Register aliases */ #define REG_GP REG_X26 #define REG_FP REG_X27 #define REG_SP REG_X28 #define REG_RA REG_X29 #define REG_EA REG_X30 #define REG_BA REG_X31 #define REG_EPC REG_X30 #define REG_A0 REG_X1 #define REG_A1 REG_X2 #define REG_A2 REG_X3 #define REG_A3 REG_X4 #define REG_A4 REG_X5 #define REG_A5 REG_X6 #define REG_A6 REG_X7 #define REG_A7 REG_X8 #define REG_IE REG_INT_CTX /**************************************************************************** * Public Types ****************************************************************************/ #ifndef __ASSEMBLY__ struct xcptcontext { #ifndef CONFIG_DISABLE_SIGNALS /* The following function pointer is non-NULL if there are pending signals * to be processed. */ void *sigdeliver; /* Actual type is sig_deliver_t */ /* These additional register save locations are used to implement the * signal delivery trampoline. */ uint32_t saved_epc; /* Trampoline PC */ uint32_t saved_int_ctx; /* Interrupt context with interrupts disabled. */ # ifdef CONFIG_BUILD_KERNEL /* This is the saved address to use when returning from a user-space * signal handler. */ uint32_t sigreturn; # endif #endif #ifdef CONFIG_BUILD_KERNEL /* The following array holds information needed to return from each nested * system call. */ uint8_t nsyscalls; struct xcpt_syscall_s syscall[CONFIG_SYS_NNEST]; #endif /* Register save area */ uint32_t regs[XCPTCONTEXT_REGS]; }; #endif /* __ASSEMBLY__ */ #endif /* __ARCH_MISOC_INCLUDE_LM32_IRQ_H */