/************************************************************************************ * arch/sh/include/sh1/irq.h * * Copyright (C) 2008 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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. * ************************************************************************************/ /* This file should never be included directed but, rather, * only indirectly through nuttx/irq.h */ #ifndef __ARCH_SH_INCLUDE_SH1_IRQ_H #define __ARCH_SH_INCLUDE_SH1_IRQ_H /************************************************************************************ * Included Files ************************************************************************************/ #include #include /************************************************************************************ * Definitions ************************************************************************************/ /* IRQ channels */ /* In the current implementation, CMON catches the following IRQ. * Support for traps can be provided by simply enabling the following, adding * vectors in sh1_head.S and adding handlers in sh1_vector.S */ /* Illegal instructions / Address errors */ #if 0 /* Handled by CMON */ # define SH1_INVINSTR_IRQ (0) /* General invalid instruction */ # define SH1_INVSLOT_IRQ (1) /* Invalid slot instruction */ # define SH1_BUSERR_IRQ (2) /* CPU bus error */ # define SH1_DMAERR_IRQ (3) /* DMA bus error */ # define SH1_NMI_IRQ (4) /* NMI */ # define SH1_USRBRK_IRQ (6) /* User break */ # define SH1_TRAP_IRQBASE (7) # define SH1_TRAP0_IRQ SH1_TRAP_IRQBASE /* TRAPA instruction (user break) */ # define SH1_TRAP1_IRQ (SH1_TRAP_IRQBASE+1) /* " " " " " " " " */ # define SH1_TRAP2_IRQ (SH1_TRAP_IRQBASE+2) /* " " " " " " " " */ # define SH1_TRAP3_IRQ (SH1_TRAP_IRQBASE+3) /* " " " " " " " " */ # define SH1_TRAP4_IRQ (SH1_TRAP_IRQBASE+4) /* " " " " " " " " */ # define SH1_TRAP5_IRQ (SH1_TRAP_IRQBASE+5) /* " " " " " " " " */ # define SH1_TRAP6_IRQ (SH1_TRAP_IRQBASE+6) /* " " " " " " " " */ # define SH1_TRAP7_IRQ (SH1_TRAP_IRQBASE+7) /* " " " " " " " " */ # define SH1_TRAP8_IRQ (SH1_TRAP_IRQBASE+8) /* " " " " " " " " */ # define SH1_TRAP9_IRQ (SH1_TRAP_IRQBASE+9) /* " " " " " " " " */ # define SH1_TRAP10_IRQ (SH1_TRAP_IRQBASE+10) /* " " " " " " " " */ # define SH1_TRAP11_IRQ (SH1_TRAP_IRQBASE+11) /* " " " " " " " " */ # define SH1_TRAP12_IRQ (SH1_TRAP_IRQBASE+12) /* " " " " " " " " */ # define SH1_TRAP13_IRQ (SH1_TRAP_IRQBASE+13) /* " " " " " " " " */ # define SH1_TRAP14_IRQ (SH1_TRAP_IRQBASE+14) /* " " " " " " " " */ # define SH1_TRAP15_IRQ (SH1_TRAP_IRQBASE+15) /* " " " " " " " " */ # define SH1_TRAP16_IRQ (SH1_TRAP_IRQBASE+16) /* " " " " " " " " */ # define SH1_TRAP17_IRQ (SH1_TRAP_IRQBASE+17) /* " " " " " " " " */ # define SH1_TRAP18_IRQ (SH1_TRAP_IRQBASE+18) /* " " " " " " " " */ # define SH1_TRAP19_IRQ (SH1_TRAP_IRQBASE+19) /* " " " " " " " " */ # define SH1_TRAP20_IRQ (SH1_TRAP_IRQBASE+20) /* " " " " " " " " */ # define SH1_TRAP21_IRQ (SH1_TRAP_IRQBASE+21) /* " " " " " " " " */ # define SH1_TRAP22_IRQ (SH1_TRAP_IRQBASE+22) /* " " " " " " " " */ # define SH1_TRAP23_IRQ (SH1_TRAP_IRQBASE+23) /* " " " " " " " " */ # define SH1_TRAP24_IRQ (SH1_TRAP_IRQBASE+24) /* " " " " " " " " */ # define SH1_TRAP25_IRQ (SH1_TRAP_IRQBASE+25) /* " " " " " " " " */ # define SH1_TRAP26_IRQ (SH1_TRAP_IRQBASE+26) /* " " " " " " " " */ # define SH1_TRAP27_IRQ (SH1_TRAP_IRQBASE+27) /* " " " " " " " " */ # define SH1_TRAP28_IRQ (SH1_TRAP_IRQBASE+28) /* " " " " " " " " */ # define SH1_TRAP29_IRQ (SH1_TRAP_IRQBASE+29) /* " " " " " " " " */ # define SH1_TRAP30_IRQ (SH1_TRAP_IRQBASE+30) /* " " " " " " " " */ # define SH1_TRAP31_IRQ (SH1_TRAP_IRQBASE+31) /* " " " " " " " " */ # define SH1_IRQ_IRQBASE (SH1_TRAP_IRQBASE+32) /* Interrupts */ # define SH1_IRQ0_IRQ SH1_IRQ_IRQBASE /* IRQ0 */ # define SH1_IRQ1_IRQ (SH1_IRQ_IRQBASE+1) /* IRQ1 */ # define SH1_IRQ2_IRQ (SH1_IRQ_IRQBASE+2) /* IRQ2 */ # define SH1_IRQ3_IRQ (SH1_IRQ_IRQBASE+3) /* IRQ3 */ # define SH1_IRQ4_IRQ (SH1_IRQ_IRQBASE+4) /* IRQ4 */ # define SH1_IRQ5_IRQ (SH1_IRQ_IRQBASE+5) /* IRQ5 */ # define SH1_IRQ6_IRQ (SH1_IRQ_IRQBASE+6) /* IRQ6 */ # define SH1_IRQ7_IRQ (SH1_IRQ_IRQBASE+7) /* IRQ7 */ # define SH1_CHIP_IRQBASE (SH1_IRQ_IRQBASE+8) #else # define SH1_CHIP_IRQBASE (0) #endif /* On-chip modules -- The following may be unique to the 7032 */ #ifdef CONFIG_ARCH_SH7032 /* DMAC */ #ifdef CONFIG_SH1_DMAC0 /* DMAC0 */ # define SH1_DEI0_IRQ SH1_CHIP_IRQBASE /* DEI0 */ # define SH1_DMAC1_IRQBASE (SH1_CHIP_IRQBASE+1) #else # define SH1_DMAC1_IRQBASE SH1_CHIP_IRQBASE #endif #ifdef CONFIG_SH1_DMAC1 /* DMAC1 */ # define SH1_DEI1_IRQ SH1_DMAC1_IRQBASE /* DEI1 */ # define SH1_DMAC2_IRQBASE (SH1_DMAC1_IRQBASE+1) #else # define SH1_DMAC2_IRQBASE SH1_DMAC1_IRQBASE #endif #ifdef CONFIG_SH1_DMAC2 /* DMAC2 */ # define SH1_DEI2_IRQ SH1_DMAC2_IRQBASE /* DEI2 */ # define SH1_DMAC3_IRQBASE (SH1_DMAC2_IRQBASE+1) #else # define SH1_DMAC3_IRQBASE SH1_DMAC2_IRQBASE #endif #ifdef CONFIG_SH1_DMAC3 /* DMAC3 */ # define SH1_DEI3_IRQ SH1_DMAC3_IRQBASE /* DEI3 */ # define SH1_ITU0_IRQBASE (SH1_DMAC3_IRQBASE+1) #else # define SH1_ITU0_IRQBASE SH1_DMAC3_IRQBASE #endif /* ITU */ /* ITU0 is the system clock and is always defined */ #define SH1_IMIA0_IRQ SH1_ITU0_IRQBASE /* IMIA0 */ #define SH1_IMIB0_IRQ (SH1_ITU0_IRQBASE+1) /* IMIB0 */ #define SH1_OVI0_IRQ (SH1_ITU0_IRQBASE+2) /* OVI0 */ #define SH1_ITU1_IRQBASE (SH1_ITU0_IRQBASE+3) #ifdef CONFIG_SH1_ITU1 /* ITU1 */ # define SH1_IMIA1_IRQ SH1_ITU1_IRQBASE /* IMIA1 */ # define SH1_IMIB1_IRQ (SH1_ITU1_IRQBASE+1) /* IMIB1 */ # define SH1_OVI1_IRQ (SH1_ITU1_IRQBASE+2) /* OVI1 */ # define SH1_ITU2_IRQBASE (SH1_ITU1_IRQBASE+3) #else # define SH1_ITU2_IRQBASE SH1_ITU1_IRQBASE #endif #ifdef CONFIG_SH1_ITU2 /* ITU2 */ # define SH1_IMIA2_IRQ SH1_ITU2_IRQBASE /* IMIA2 */ # define SH1_IMIB2_IRQ (SH1_ITU2_IRQBASE+1) /* IMIB2 */ # define SH1_OVI2_IRQ (SH1_ITU2_IRQBASE+2) /* OVI2 */ # define SH1_ITU3_IRQBASE (SH1_ITU2_IRQBASE+3) #else # define SH1_ITU3_IRQBASE SH1_ITU2_IRQBASE #endif #ifdef CONFIG_SH1_ITU3 /* ITU3 */ # define SH1_IMIA3_IRQ SH1_ITU3_IRQBASE /* IMIA3 */ # define SH1_IMIB3_IRQ (SH1_ITU3_IRQBASE+1) /* IMIB3 */ # define SH1_OVI3_IRQ (SH1_ITU3_IRQBASE+2) /* OVI3 */ # define SH1_ITU4_IRQBASE (SH1_ITU3_IRQBASE+3) #else # define SH1_ITU4_IRQBASE SH1_ITU3_IRQBASE #endif #ifdef CONFIG_SH1_ITU4 /* ITU4 */ # define SH1_IMIA4_IRQ SH1_ITU4_IRQBASE /* IMIA4 */ # define SH1_IMIB4_IRQ (SH1_ITU4_IRQBASE+1) /* IMIB4 */ # define SH1_OVI4_IRQ (SH1_ITU4_IRQBASE+2) /* OVI4 */ # define SH1_SCI0_IRQBASE (SH1_ITU4_IRQBASE+3) #else # define SH1_SCI0_IRQBASE SH1_ITU4_IRQBASE #endif /* SCI */ #define SH1_ERI_IRQ_OFFSET (0) /* ERI0 */ #define SH1_RXI_IRQ_OFFSET (1) /* RxI0 */ #define SH1_TXI_IRQ_OFFSET (2) /* TxI0 */ #define SH1_TEI_IRQ_OFFSET (3) /* TEI0 */ #define SH1_SCI_NIRQS (4) #ifdef CONFIG_SH1_SCI0 /* SCI0 */ # define SH1_ERI0_IRQ (SH1_SCI0_IRQBASE+SH1_ERI_IRQ_OFFSET) /* ERI0 */ # define SH1_RXI0_IRQ (SH1_SCI0_IRQBASE+SH1_RXI_IRQ_OFFSET) /* RxI0 */ # define SH1_TXI0_IRQ (SH1_SCI0_IRQBASE+SH1_TXI_IRQ_OFFSET) /* TxI0 */ # define SH1_TEI0_IRQ (SH1_SCI0_IRQBASE+SH1_TEI_IRQ_OFFSET) /* TEI0 */ # define SH1_SCI1_IRQBASE (SH1_SCI0_IRQBASE+SH1_SCI_NIRQS) #else # define SH1_SCI1_IRQBASE SH1_SCI0_IRQBASE #endif #ifdef CONFIG_SH1_SCI1 /* SCI1 */ # define SH1_ERI1_IRQ (SH1_SCI1_IRQBASE+SH1_ERI_IRQ_OFFSET) /* ERI1 */ # define SH1_RXI1_IRQ (SH1_SCI1_IRQBASE+SH1_RXI_IRQ_OFFSET) /* RxI1 */ # define SH1_TXI1_IRQ (SH1_SCI1_IRQBASE+SH1_TXI_IRQ_OFFSET) /* TxI1 */ # define SH1_TEI1_IRQ (SH1_SCI1_IRQBASE+SH1_TEI_IRQ_OFFSET) /* TEI1 */ # define SH1_PEI_IRQBASE (SH1_SCI1_IRQBASE+SH1_SCI_NIRQS) #else # define SH1_PEI_IRQBASE SH1_SCI1_IRQBASE #endif #ifdef CONFIG_SH1_PCU # define SH1_PEI_IRQ SH1_PEI_IRQBASE /* Parity control unit PEI */ # define SH1_AD_IRQBASE (SH1_PEI_IRQBASE+1) #else # define SH1_AD_IRQBASE SH1_PEI_IRQBASE #endif #ifdef CONFIG_SH1_AD # define SH1_ADITI_IRQ SH1_AD_IRQBASE /* A/D ITI */ # define SH1_WDT_IRQBASE (SH1_AD_IRQBASE+1) #else # define SH1_WDT_IRQBASE SH1_AD_IRQBASE #endif #ifdef CONFIG_SH1_WDT # define SH1_WDTITI_IRQ SH1_WDT_IRQBASE /* WDT ITI */ # define SH1_CMI_IRQBASE (SH1_WDT_IRQBASE+1) #else # define SH1_CMI_IRQBASE SH1_WDT_IRQBASE #endif #ifdef CONFIG_SH1_CMI # define SH1_CMI_IRQ SH1_CMI_IRQBASE /* REF CMI */ # define NR_IRQS (SH1_CMI_IRQBASE+1) /* Total number of supported IRQs */ #else # define NR_IRQS SH1_CMI_IRQBASE /* Total number of supported IRQs */ #endif #define SH1_SYSTIMER_IRQ SH1_IMIA0_IRQ #endif /* Vector table offets **************************************************************/ /* The following provides the vector numbers for each IRQ. The IRQ numbers (above) * form the densely packet number space used by the system to identify IRQs. The * following are the (relatively) loosely spaced offsets that identify the location * of the corresponding vector in the vector table. * * These offsets are specified as a vector number (suitably for indexing an array * of uint32) but would have to by multiplied by 4 to get an addressable, byte * offset. */ /* Resets */ #define SH1_PWRONPC_VNDX (0) /* 0: Power-on reset (hard, NMI high) PC*/ #define SH1_PWRONSP_VNDX (1) /* 1: Power-on reset (hard, NMI high) SP */ #define SH1_MRESETPC_VNDX (2) /* 2: Power-on reset (hard, NMI high) PC*/ #define SH1_MRESETSP_VNDX (3) /* 3: Power-on reset (hard, NMI high) SP */ /* Illegal instructions / Address errors */ #define SH1_INVINSTR_VNDX (4) /* 4: General invalid instruction */ /* 5: Reserved for system */ #define SH1_INVSLOT_VNDX (6) /* 6: Invalid slot instruction */ /* 7-8: Reserved for system */ #define SH1_BUSERR_VNDX (9) /* 9: CPU bus error */ #define SH1_DMAERR_VNDX (10) /* 10: DMA bus error */ /* NMI, user break */ #define SH1_NMI_VNDX (11) /* 11: NMI */ #define SH1_USRBRK_VNDX (12) /* 12: User break */ /* 13-31: Reserved for system */ /* Trap instruction */ #define SH1_TRAP_VNDX (32) /* 32-63: TRAPA instruction (user break) */ #define SH1_TRAP0_VNDX (32) /* 32: TRAPA instruction (user break) */ #define SH1_TRAP1_VNDX (33) /* 33: " " " " " " " " */ #define SH1_TRAP2_VNDX (34) /* 34: " " " " " " " " */ #define SH1_TRAP3_VNDX (35) /* 35: " " " " " " " " */ #define SH1_TRAP4_VNDX (36) /* 36: " " " " " " " " */ #define SH1_TRAP5_VNDX (37) /* 37: " " " " " " " " */ #define SH1_TRAP6_VNDX (38) /* 38: " " " " " " " " */ #define SH1_TRAP7_VNDX (39) /* 39: " " " " " " " " */ #define SH1_TRAP8_VNDX (40) /* 40: " " " " " " " " */ #define SH1_TRAP9_VNDX (41) /* 41: " " " " " " " " */ #define SH1_TRAP10_VNDX (42) /* 42: " " " " " " " " */ #define SH1_TRAP11_VNDX (43) /* 43: " " " " " " " " */ #define SH1_TRAP12_VNDX (44) /* 44: " " " " " " " " */ #define SH1_TRAP13_VNDX (45) /* 45: " " " " " " " " */ #define SH1_TRAP14_VNDX (46) /* 46: " " " " " " " " */ #define SH1_TRAP15_VNDX (47) /* 47: " " " " " " " " */ #define SH1_TRAP16_VNDX (48) /* 48: " " " " " " " " */ #define SH1_TRAP17_VNDX (49) /* 49: " " " " " " " " */ #define SH1_TRAP18_VNDX (50) /* 50: " " " " " " " " */ #define SH1_TRAP19_VNDX (51) /* 51: " " " " " " " " */ #define SH1_TRAP20_VNDX (52) /* 52: " " " " " " " " */ #define SH1_TRAP21_VNDX (53) /* 53: " " " " " " " " */ #define SH1_TRAP22_VNDX (54) /* 54: " " " " " " " " */ #define SH1_TRAP23_VNDX (55) /* 55: " " " " " " " " */ #define SH1_TRAP24_VNDX (56) /* 56: " " " " " " " " */ #define SH1_TRAP25_VNDX (57) /* 57: " " " " " " " " */ #define SH1_TRAP26_VNDX (58) /* 58: " " " " " " " " */ #define SH1_TRAP27_VNDX (59) /* 59: " " " " " " " " */ #define SH1_TRAP28_VNDX (60) /* 60: " " " " " " " " */ #define SH1_TRAP29_VNDX (61) /* 61: " " " " " " " " */ #define SH1_TRAP30_VNDX (62) /* 62: " " " " " " " " */ #define SH1_TRAP31_VNDX (63) /* 63: " " " " " " " " */ /* Interrupts */ #define SH1_IRQ_VNDX (64) /* 64-71: IRQ0-7 */ #define SH1_IRQ0_VNDX (64) /* 64: IRQ0 */ #define SH1_IRQ1_VNDX (65) /* 65: IRQ1 */ #define SH1_IRQ2_VNDX (66) /* 66: IRQ2 */ #define SH1_IRQ3_VNDX (67) /* 67: IRQ3 */ #define SH1_IRQ4_VNDX (68) /* 68: IRQ4 */ #define SH1_IRQ5_VNDX (69) /* 69: IRQ5 */ #define SH1_IRQ6_VNDX (70) /* 70: IRQ6 */ #define SH1_IRQ7_VNDX (71) /* 71: IRQ7 */ #define SH1_LASTCMN_VNDX (71) #define SH1_NCMN_VECTORS (72) /* On-chip modules -- The following may be unique to the 7032 */ #ifdef CONFIG_ARCH_SH7032 /* DMAC */ #define SH1_DMAC0_VNDX (72) /* 72-73: DMAC0 */ #define SH1_DEI0_VNDX (72) /* 72: DMAC0 DEI0 */ /* 73: Reserved */ #define SH1_DMAC1_VNDX (74) /* 74-75: DMAC1 */ #define SH1_DEI1_VNDX (74) /* 74: DMAC1 DEI1 */ /* 75: Reserved */ #define SH1_DMAC2_VNDX (76) /* 76-77: DMAC2 */ #define SH1_DEI2_VNDX (76) /* 76: DMAC2 DEI2 */ /* 77: Reserved */ #define SH1_DMAC3_VNDX (78) /* 78-79: DMAC3 */ #define SH1_DEI3_VNDX (78) /* 78: DMAC3 DEI3 */ /* 79: Reserved */ /* ITU */ #define SH1_IMIA0_VNDX (80) /* 80: ITU0 IMIA0 */ #define SH1_IMIB0_VNDX (81) /* 81: IMIB0 */ #define SH1_OVI0_VNDX (82) /* 82: OVI0 */ /* 83: Reserved */ #define SH1_IMIA1_VNDX (84) /* 84: ITU1 IMIA1 */ #define SH1_IMIB1_VNDX (85) /* 85: IMIB1 */ #define SH1_OVI1_VNDX (86) /* 86: OVI1 */ /* 87: Reserved */ #define SH1_IMIA2_VNDX (88) /* 88: ITU2 IMIA2 */ #define SH1_IMIB2_VNDX (89) /* 89: IMIB2 */ #define SH1_OVI2_VNDX (90) /* 90: OVI2 */ /* 91: Reserved */ #define SH1_IMIA3_VNDX (92) /* 92: ITU3 IMIA3 */ #define SH1_IMIB3_VNDX (93) /* 93: IMIB3 */ #define SH1_OVI3_VNDX (94) /* 94: OVI3 */ /* 95: Reserved */ #define SH1_IMIA4_VNDX (96) /* 96: ITU4 IMIA4 */ #define SH1_IMIB4_VNDX (97) /* 97: IMIB4 */ #define SH1_OVI4_VNDX (98) /* 98: OVI4 */ /* 99: Reserved */ /* SCI */ #define SH1_ERI0_VNDX (100) /* 100: SCI0 ERI0 */ #define SH1_RXI0_VNDX (101) /* 101: RxI0 */ #define SH1_TXI0_VNDX (102) /* 102: TxI0 */ #define SH1_TEI0_VNDX (103) /* 103: TEI0 */ #define SH1_ERI1_VNDX (104) /* 104: SCI1 ERI1 */ #define SH1_RXI1_VNDX (105) /* 105: RxI1 */ #define SH1_TXI1_VNDX (106) /* 106: TxI1 */ #define SH1_TEI1_VNDX (107) /* 107: TEI1 */ #define SH1_PEI_VNDX (108) /* 108: Parity control unit PEI */ #define SH1_ADITI_VNDX (109) /* 109: A/D ITI */ /* 110-111: Reserved */ #define SH1_WDTITI_VNDX (112) /* 112: WDT ITI */ #define SH1_CMI_VNDX (113) /* 113: REF CMI */ /* 114-115: Reserved */ /* 116-255 reserved */ #endif #define SH1_LAST_VNDX (255) #define SH1_NVECTORS (256) /* IRQ Stack Frame Format. The SH-1 has a push down stack. The PC * and SR are pushed by hardware at the time an IRQ is taken. */ /* Saved to the stacked by up_vector */ #define REG_R8 (0) #define REG_R9 (1) #define REG_R10 (2) #define REG_R11 (3) #define REG_R12 (4) #define REG_R13 (5) #define REG_R14 (6) #define REG_PR (7) #define REG_GBR (8) /* The value of the stack pointer *before* the interrupt occurred */ #define REG_R15 (9) #define REG_SP REG_R15 /* These registers do not need to be preserved by up_saveusercontext */ #define REG_MACL (10) #define REG_MACH (11) #define REG_R0 (12) #define REG_R1 (13) #define REG_R2 (14) #define REG_R3 (15) #define REG_R5 (16) #define REG_R6 (17) #define REG_R7 (18) /* Saved to the stack by the trampoline logic */ #define REG_R4 (19) /* Pushed by hardware when the exception is taken */ #define REG_PC (20) #define REG_SR (21) #define XCPTCONTEXT_REGS (22) #define XCPTCONTEXT_SIZE (4 * XCPTCONTEXT_REGS) /************************************************************************************ * Public Types ************************************************************************************/ /* This struct defines the way the registers are stored. We need to save: */ #ifndef __ASSEMBLY__ struct xcptcontext { /* The following function pointer is non-zero if there are pending signals * to be processed. */ #ifndef CONFIG_DISABLE_SIGNALS void *sigdeliver; /* Actual type is sig_deliver_t */ /* These are saved copies of LR and SR used during signal processing. */ uint32 saved_pc; uint32 saved_sr; #endif /* Register save area */ uint32 regs[XCPTCONTEXT_REGS]; }; #endif /************************************************************************************ * Public Data ************************************************************************************/ #ifndef __ASSEMBLY__ #ifdef __cplusplus #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif /************************************************************************************ * Inline Functions ************************************************************************************/ #ifndef __ASSEMBLY__ /* Get the current value of the SR */ static inline irqstate_t __getsr(void) { irqstate_t flags; __asm__ __volatile__ ("stc sr, %0" : "=r" (flags)); return flags; } /* Set the new value of the SR */ static inline void __setsr(irqstate_t sr) { __asm__ __volatile__ ("ldc %0, sr" : : "r" (sr)); } /* Return the current interrupt enable state & disable IRQs */ static inline irqstate_t irqsave(void) { irqstate_t flags = __getsr(); __setsr(flags | 0x000000f0); return flags; } /* Disable IRQs */ static inline void irqdisable(void) { uint32 flags = __getsr(); __setsr(flags | 0x000000f0); } /* Enable IRQs */ static inline void irqenable(void) { uint32 flags = __getsr(); __setsr(flags & ~0x000000f0); } /* Restore saved IRQ state */ static inline void irqrestore(irqstate_t flags) { if ((flags & 0x000000f0) != 0x000000f0) { irqenable(); } else { irqdisable(); } } #endif /************************************************************************************ * Public Functions ************************************************************************************/ #undef EXTERN #ifdef __cplusplus } #endif #endif #endif /* __ARCH_SH_INCLUDE_SH1_IRQ_H */