From f49e21207cf6dd51e69b3339dac5182829bbb4f9 Mon Sep 17 00:00:00 2001 From: gdisirio Date: Mon, 3 Nov 2014 11:21:30 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7464 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/rt/ports/SIMIA32/GCC/chcore.c | 93 ++++++++++++++ os/rt/ports/SIMIA32/GCC/chcore.h | 250 ++++++++++++++++++++++++++++++++++++++ os/rt/ports/SIMIA32/GCC/chtypes.h | 77 ++++++++++++ os/rt/ports/SIMIA32/GCC/port.mk | 6 + 4 files changed, 426 insertions(+) create mode 100644 os/rt/ports/SIMIA32/GCC/chcore.c create mode 100644 os/rt/ports/SIMIA32/GCC/chcore.h create mode 100644 os/rt/ports/SIMIA32/GCC/chtypes.h create mode 100644 os/rt/ports/SIMIA32/GCC/port.mk (limited to 'os/rt/ports') diff --git a/os/rt/ports/SIMIA32/GCC/chcore.c b/os/rt/ports/SIMIA32/GCC/chcore.c new file mode 100644 index 000000000..24b38fa8f --- /dev/null +++ b/os/rt/ports/SIMIA32/GCC/chcore.c @@ -0,0 +1,93 @@ +/* + ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010, + 2011,2012,2013 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + + --- + + A special exception to the GPL can be applied should you wish to distribute + a combined work that includes ChibiOS/RT, without being obliged to provide + the source code for any proprietary components. See the file exception.txt + for full details of how and when the exception can be applied. +*/ + +/** + * @addtogroup SIMIA32_CORE + * @{ + */ + +#include + +#include "ch.h" +#include "hal.h" + +/** + * Performs a context switch between two threads. + * @param otp the thread to be switched out + * @param ntp the thread to be switched in + */ +__attribute__((used)) +static void __dummy(Thread *ntp, Thread *otp) { + (void)ntp; (void)otp; + + asm volatile ( +#if defined(WIN32) + ".globl @port_switch@8 \n\t" + "@port_switch@8:" +#elif defined(__APPLE__) + ".globl _port_switch \n\t" + "_port_switch:" +#else + ".globl port_switch \n\t" + "port_switch:" +#endif + "push %ebp \n\t" + "push %esi \n\t" + "push %edi \n\t" + "push %ebx \n\t" + "movl %esp, 12(%edx) \n\t" + "movl 12(%ecx), %esp \n\t" + "pop %ebx \n\t" + "pop %edi \n\t" + "pop %esi \n\t" + "pop %ebp \n\t" + "ret"); +} + +/** + * Halts the system. In this implementation it just exits the simulation. + */ +__attribute__((fastcall)) +void port_halt(void) { + + exit(2); +} + +/** + * @brief Start a thread by invoking its work function. + * @details If the work function returns @p chThdExit() is automatically + * invoked. + */ +__attribute__((cdecl, noreturn)) +void _port_thread_start(msg_t (*pf)(void *), void *p) { + + chSysUnlock(); + chThdExit(pf(p)); + while(1); +} + +/** @} */ diff --git a/os/rt/ports/SIMIA32/GCC/chcore.h b/os/rt/ports/SIMIA32/GCC/chcore.h new file mode 100644 index 000000000..06e28b35f --- /dev/null +++ b/os/rt/ports/SIMIA32/GCC/chcore.h @@ -0,0 +1,250 @@ +/* + ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010, + 2011,2012,2013 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + + --- + + A special exception to the GPL can be applied should you wish to distribute + a combined work that includes ChibiOS/RT, without being obliged to provide + the source code for any proprietary components. See the file exception.txt + for full details of how and when the exception can be applied. +*/ + +/** + * @addtogroup SIMIA32_CORE + * @{ + */ + +#ifndef _CHCORE_H_ +#define _CHCORE_H_ + +#if CH_DBG_ENABLE_STACK_CHECK +#error "option CH_DBG_ENABLE_STACK_CHECK not supported by this port" +#endif + +/** + * Macro defining the a simulated architecture into x86. + */ +#define CH_ARCHITECTURE_SIMIA32 + +/** + * Name of the implemented architecture. + */ +#define CH_ARCHITECTURE_NAME "Simulator" + +/** + * @brief Name of the architecture variant (optional). + */ +#define CH_CORE_VARIANT_NAME "x86 (integer only)" + +/** + * @brief Name of the compiler supported by this port. + */ +#define CH_COMPILER_NAME "GCC " __VERSION__ + +/** + * @brief Port-specific information string. + */ +#define CH_PORT_INFO "No preemption" + +/** + * 16 bytes stack alignment. + */ +typedef struct { + uint8_t a[16]; +} stkalign_t __attribute__((aligned(16))); + +/** + * Generic x86 register. + */ +typedef void *regx86; + +/** + * Interrupt saved context. + * This structure represents the stack frame saved during a preemption-capable + * interrupt handler. + */ +struct extctx { +}; + +/** + * System saved context. + * @note In this demo the floating point registers are not saved. + */ +struct intctx { + regx86 ebx; + regx86 edi; + regx86 esi; + regx86 ebp; + regx86 eip; +}; + +/** + * Platform dependent part of the @p Thread structure. + * This structure usually contains just the saved stack pointer defined as a + * pointer to a @p intctx structure. + */ +struct context { + struct intctx volatile *esp; +}; + +#define APUSH(p, a) (p) -= sizeof(void *), *(void **)(p) = (void*)(a) + +/* Darwin requires the stack to be aligned to a 16-byte boundary at + * the time of a call instruction (in case the called function needs + * to save MMX registers). This aligns to 'mod' module 16, so that we'll end + * up with the right alignment after pushing the args. */ +#define AALIGN(p, mask, mod) p = (void *)((((uintptr_t)(p) - mod) & ~mask) + mod) + +/** + * Platform dependent part of the @p chThdCreateI() API. + * This code usually setup the context switching frame represented by a + * @p intctx structure. + */ +#define SETUP_CONTEXT(workspace, wsize, pf, arg) { \ + uint8_t *esp = (uint8_t *)workspace + wsize; \ + APUSH(esp, 0); \ + uint8_t *savebp = esp; \ + AALIGN(esp, 15, 8); \ + APUSH(esp, arg); \ + APUSH(esp, pf); \ + APUSH(esp, 0); \ + esp -= sizeof(struct intctx); \ + ((struct intctx *)esp)->eip = _port_thread_start; \ + ((struct intctx *)esp)->ebx = 0; \ + ((struct intctx *)esp)->edi = 0; \ + ((struct intctx *)esp)->esi = 0; \ + ((struct intctx *)esp)->ebp = savebp; \ + tp->p_ctx.esp = (struct intctx *)esp; \ +} + +/** + * Stack size for the system idle thread. + */ +#ifndef PORT_IDLE_THREAD_STACK_SIZE +#define PORT_IDLE_THREAD_STACK_SIZE 256 +#endif + +/** + * Per-thread stack overhead for interrupts servicing, it is used in the + * calculation of the correct working area size. + * It requires stack space because the simulated "interrupt handlers" can + * invoke host library functions inside so it better have a lot of space. + */ +#ifndef PORT_INT_REQUIRED_STACK +#define PORT_INT_REQUIRED_STACK 16384 +#endif + +/** + * Enforces a correct alignment for a stack area size value. + */ +#define STACK_ALIGN(n) ((((n) - 1) | (sizeof(stkalign_t) - 1)) + 1) + + /** + * Computes the thread working area global size. + */ +#define THD_WA_SIZE(n) STACK_ALIGN(sizeof(Thread) + \ + sizeof(void *) * 4 + \ + sizeof(struct intctx) + \ + sizeof(struct extctx) + \ + (n) + (PORT_INT_REQUIRED_STACK)) + +/** + * Macro used to allocate a thread working area aligned as both position and + * size. + */ +#define WORKING_AREA(s, n) stkalign_t s[THD_WA_SIZE(n) / sizeof(stkalign_t)] + +/** + * IRQ prologue code, inserted at the start of all IRQ handlers enabled to + * invoke system APIs. + */ +#define PORT_IRQ_PROLOGUE() + +/** + * IRQ epilogue code, inserted at the end of all IRQ handlers enabled to + * invoke system APIs. + */ +#define PORT_IRQ_EPILOGUE() + +/** + * IRQ handler function declaration. + */ +#define PORT_IRQ_HANDLER(id) void id(void) + +/** + * Simulator initialization. + */ +#define port_init() + +/** + * Does nothing in this simulator. + */ +#define port_lock() asm volatile("nop") + +/** + * Does nothing in this simulator. + */ +#define port_unlock() asm volatile("nop") + +/** + * Does nothing in this simulator. + */ +#define port_lock_from_isr() + +/** + * Does nothing in this simulator. + */ +#define port_unlock_from_isr() + +/** + * Does nothing in this simulator. + */ +#define port_disable() + +/** + * Does nothing in this simulator. + */ +#define port_suspend() + +/** + * Does nothing in this simulator. + */ +#define port_enable() + +/** + * In the simulator this does a polling pass on the simulated interrupt + * sources. + */ +#define port_wait_for_interrupt() ChkIntSources() + +#ifdef __cplusplus +extern "C" { +#endif + __attribute__((fastcall)) void port_switch(Thread *ntp, Thread *otp); + __attribute__((fastcall)) void port_halt(void); + __attribute__((cdecl, noreturn)) void _port_thread_start(msg_t (*pf)(void *), + void *p); + void ChkIntSources(void); +#ifdef __cplusplus +} +#endif + +#endif /* _CHCORE_H_ */ + +/** @} */ diff --git a/os/rt/ports/SIMIA32/GCC/chtypes.h b/os/rt/ports/SIMIA32/GCC/chtypes.h new file mode 100644 index 000000000..a74b80a4b --- /dev/null +++ b/os/rt/ports/SIMIA32/GCC/chtypes.h @@ -0,0 +1,77 @@ +/* + ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010, + 2011,2012,2013 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + + --- + + A special exception to the GPL can be applied should you wish to distribute + a combined work that includes ChibiOS/RT, without being obliged to provide + the source code for any proprietary components. See the file exception.txt + for full details of how and when the exception can be applied. +*/ + +#ifndef _CHTYPES_H_ +#define _CHTYPES_H_ + +#include +#include +#include + +typedef bool bool_t; /**< Fast boolean type. */ +typedef uint8_t tmode_t; /**< Thread flags. */ +typedef uint8_t tstate_t; /**< Thread state. */ +typedef uint8_t trefs_t; /**< Thread references counter. */ +typedef uint8_t tslices_t; /**< Thread time slices counter. */ +typedef uint32_t tprio_t; /**< Thread priority. */ +typedef int32_t msg_t; /**< Inter-thread message. */ +typedef int32_t eventid_t; /**< Event Id. */ +typedef uint32_t eventmask_t; /**< Event mask. */ +typedef uint32_t flagsmask_t; /**< Event flags. */ +typedef uint32_t systime_t; /**< System time. */ +typedef int32_t cnt_t; /**< Resources counter. */ + +/** + * @brief Inline function modifier. + */ +#define INLINE inline + +/** + * @brief ROM constant modifier. + * @note It is set to use the "const" keyword in this port. + */ +#define ROMCONST const + +/** + * @brief Packed structure modifier (within). + * @note It uses the "packed" GCC attribute. + */ +#define PACK_STRUCT_STRUCT __attribute__((packed)) + +/** + * @brief Packed structure modifier (before). + * @note Empty in this port. + */ +#define PACK_STRUCT_BEGIN + +/** + * @brief Packed structure modifier (after). + * @note Empty in this port. + */ +#define PACK_STRUCT_END + +#endif /* _CHTYPES_H_ */ diff --git a/os/rt/ports/SIMIA32/GCC/port.mk b/os/rt/ports/SIMIA32/GCC/port.mk new file mode 100644 index 000000000..8f053abc4 --- /dev/null +++ b/os/rt/ports/SIMIA32/GCC/port.mk @@ -0,0 +1,6 @@ +# List of the ChibiOS/RT SIMIA32 port files. +PORTSRC = ${CHIBIOS}/os/ports/GCC/SIMIA32/chcore.c + +PORTASM = + +PORTINC = ${CHIBIOS}/os/ports/GCC/SIMIA32 -- cgit v1.2.3