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/*
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/*
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 * Copyright (c) 2006 Ondrej Palkovsky
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 * Copyright (c) 2007 Michal Kebrt
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 * All rights reserved.
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 * All rights reserved.
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 *
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * are met:
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 */
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 */
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/** @addtogroup libcarm32  
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/** @addtogroup libcarm32  
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 * @{
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 * @{
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 */
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 */
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/** @file
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/** @file
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 * @ingroup libcarm32  
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 *  @brief psthread related declarations.
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 */
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 */
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#ifndef LIBC_arm32_PSTHREAD_H_
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#ifndef LIBC_arm32_PSTHREAD_H_
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#define LIBC_arm32_PSTHREAD_H_
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#define LIBC_arm32_PSTHREAD_H_
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#include <types.h>
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#include <types.h>
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#include <align.h>
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#include "thread.h"
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/** Size of a stack item */
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#define SP_DELTA    0   /* TODO */
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#define STACK_ITEM_SIZE     4
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/** Stack alignment - see <a href="http://www.arm.com/support/faqdev/14269.html">ABI</a> for details */
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#define STACK_ALIGNMENT     8
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#define SP_DELTA    (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT))
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/** Sets data to the context.
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 *  
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 *  @param c     Context (#context_t).
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 *  @param _pc   Program counter.
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 *  @param stack Stack address.
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 *  @param size  Stack size.
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 *  @param ptls  Pointer to the TCB.
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 */
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#define context_set(c, _pc, stack, size, ptls)          \
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    (c)->pc = (sysarg_t) (_pc);             \
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    (c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA;     \
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        (c)->tls = ((sysarg_t)(ptls)) + sizeof(tcb_t) + ARM_TP_OFFSET;
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/** Thread context.
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 *
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 *  Only registers preserved accross function calls are included. r9 is used
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 *  to store a TLS address. -ffixed-r9 gcc forces gcc not to use this
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 *  register. -mtp=soft forces gcc to use #__aeabi_read_tp to obtain
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 *  TLS address.
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 */
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typedef struct  {
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typedef struct  {
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    uint32_t sp;
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    uint32_t sp;
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    uint32_t pc;
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    uint32_t pc;
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    uint32_t r4;
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    uint32_t r5;
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    uint32_t r6;
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    uint32_t r7;
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    uint32_t r8;
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    uint32_t tls;
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    uint32_t tls;
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    uint32_t r10;
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    uint32_t r11;
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} context_t;
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} context_t;
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#endif
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#endif
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/** @}
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/** @}
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 */
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 */