diff options
Diffstat (limited to 'nuttx/arch/z80/include/z8')
-rw-r--r-- | nuttx/arch/z80/include/z8/arch.h | 77 | ||||
-rw-r--r-- | nuttx/arch/z80/include/z8/irq.h | 148 |
2 files changed, 225 insertions, 0 deletions
diff --git a/nuttx/arch/z80/include/z8/arch.h b/nuttx/arch/z80/include/z8/arch.h new file mode 100644 index 000000000..d5f02a49a --- /dev/null +++ b/nuttx/arch/z80/include/z8/arch.h @@ -0,0 +1,77 @@ +/**************************************************************************** + * arch/z8/arch.h + * arch/chip/arch.h + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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/arch.h (via arch/arch.h) + */ + +#ifndef __ARCH_Z8_ARCH_H +#define __ARCH_Z8_ARCH_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +/**************************************************************************** + * Public Variables + ****************************************************************************/ + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +#ifdef __cplusplus +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + +#undef EXTERN +#ifdef __cplusplus +} +#endif + +#endif /* __ARCH_Z8_ARCH_H */ + diff --git a/nuttx/arch/z80/include/z8/irq.h b/nuttx/arch/z80/include/z8/irq.h new file mode 100644 index 000000000..91a5ffd1c --- /dev/null +++ b/nuttx/arch/z80/include/z8/irq.h @@ -0,0 +1,148 @@ +/**************************************************************************** + * arch/z8/irq.h + * arch/chip/irq.h + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 (via arch/irq.h) + */ + +#ifndef __ARCH_Z8_IRQ_H +#define __ARCH_Z8_IRQ_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* Z80 Interrupts */ + +#define Z80_RST0 (0) +#define Z80_RST1 (1) +#define Z80_RST2 (2) +#define Z80_RST3 (3) +#define Z80_RST4 (4) +#define Z80_RST5 (5) +#define Z80_RST6 (6) +#define Z80_RST7 (7) + +#define Z80_IRQ_SYSTIMER Z80_RST7 +#define NR_IRQS (8) + +/* IRQ Stack Frame Format + * + * This stack frame is created on each interrupt. These registers are stored + * in the TCB to many context switches. + */ + +#define XCPT_I (0) /* Offset 0: Saved I w/interrupt state in carry */ +#define XCPT_BC (1) /* Offset 1: Saved BC register */ +#define XCPT_DE (2) /* Offset 2: Saved DE register */ +#define XCPT_IX (3) /* Offset 3: Saved IX register */ +#define XCPT_IY (4) /* Offset 4: Saved IY register */ +#define XCPT_SP (5) /* Offset 5: Offset to SP at time of interrupt */ +#define XCPT_HL (6) /* Offset 6: Saved HL register */ +#define XCPT_AF (7) /* Offset 7: Saved AF register */ +#define XCPT_PC (8) /* Offset 8: Offset to PC at time of interrupt */ + +#define XCPTCONTEXT_REGS (9) +#define XCPTCONTEXT_SIZE (2 * XCPTCONTEXT_REGS) + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +#ifndef __ASSEMBLY__ + +/* This is the the type of the register save array */ + +typedef uint16 chipreg_t; + +/* This struct defines the way the registers are stored. */ + +struct xcptcontext +{ + /* Register save area */ + + uint16 regs[XCPTCONTEXT_REGS]; + + /* 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 */ + + /* The following retains that state during signal execution */ + + uint16 saved_pc; /* Saved return address */ + uint16 saved_i; /* Saved interrupt state */ +#endif +}; +#endif + +/**************************************************************************** + * Inline functions + ****************************************************************************/ + +/**************************************************************************** + * Public Variables + ****************************************************************************/ + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +#ifndef __ASSEMBLY__ +#ifdef __cplusplus +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + +EXTERN irqstate_t irqsave(void) __naked; +EXTERN void irqrestore(irqstate_t flags) __naked; + +#undef EXTERN +#ifdef __cplusplus +} +#endif +#endif + +#endif /* __ARCH_Z8_IRQ_H */ + |