| 0,0 → 1,90 |
|---|
| /* |
| * Copyright (c) 2007 Michal Kebrt |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| |
| /** @addtogroup libcarm32 |
| * @{ |
| */ |
| /** @file |
| * @brief Fibrils related declarations. |
| */ |
| |
| #ifndef LIBC_arm32_FIBRIL_H_ |
| #define LIBC_arm32_FIBRIL_H_ |
| |
| #include <types.h> |
| #include <align.h> |
| #include "thread.h" |
| |
| /** Size of a stack item */ |
| #define STACK_ITEM_SIZE 4 |
| |
| /** Stack alignment - see <a href="http://www.arm.com/support/faqdev/14269.html">ABI</a> for details */ |
| #define STACK_ALIGNMENT 8 |
| |
| #define SP_DELTA (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT)) |
| |
| |
| /** Sets data to the context. |
| * |
| * @param c Context (#context_t). |
| * @param _pc Program counter. |
| * @param stack Stack address. |
| * @param size Stack size. |
| * @param ptls Pointer to the TCB. |
| */ |
| #define context_set(c, _pc, stack, size, ptls) \ |
| (c)->pc = (sysarg_t) (_pc); \ |
| (c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA; \ |
| (c)->tls = ((sysarg_t)(ptls)) + sizeof(tcb_t) + ARM_TP_OFFSET; |
| |
| |
| /** Fibril context. |
| * |
| * Only registers preserved accross function calls are included. r9 is used |
| * to store a TLS address. -ffixed-r9 gcc forces gcc not to use this |
| * register. -mtp=soft forces gcc to use #__aeabi_read_tp to obtain |
| * TLS address. |
| */ |
| typedef struct { |
| uint32_t sp; |
| uint32_t pc; |
| uint32_t r4; |
| uint32_t r5; |
| uint32_t r6; |
| uint32_t r7; |
| uint32_t r8; |
| uint32_t tls; |
| uint32_t r10; |
| uint32_t r11; |
| } context_t; |
| |
| |
| #endif |
| |
| /** @} |
| */ |