/trunk/uspace/libc/arch/arm32/include/psthread.h |
---|
1,5 → 1,5 |
/* |
* Copyright (c) 2006 Ondrej Palkovsky |
* Copyright (c) 2007 Michal Kebrt |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
29,8 → 29,8 |
/** @addtogroup libcarm32 |
* @{ |
*/ |
/** @file |
* @ingroup libcarm32 |
/** @file |
* @brief psthread related declarations. |
*/ |
#ifndef LIBC_arm32_PSTHREAD_H_ |
37,15 → 37,53 |
#define LIBC_arm32_PSTHREAD_H_ |
#include <types.h> |
#include <align.h> |
#include "thread.h" |
#define SP_DELTA 0 /* TODO */ |
/** 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; |
/** Thread 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 |
/** @} |
/trunk/uspace/libc/arch/arm32/include/syscall.h |
---|
1,5 → 1,5 |
/* |
* Copyright (c) 2005 Martin Decky |
* Copyright (c) 2007 Michal Kebrt |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
26,11 → 26,11 |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup libc |
/** @addtogroup libcarm32 |
* @{ |
*/ |
/** |
* @file |
/** @file |
* @brief Empty. |
*/ |
#ifndef LIBC_arm32_SYSCALL_H_ |
/trunk/uspace/libc/arch/arm32/include/atomic.h |
---|
1,5 → 1,5 |
/* |
* Copyright (c) 2005 Jakub Jermar |
* Copyright (c) 2007 Michal Kebrt |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
30,6 → 30,7 |
* @{ |
*/ |
/** @file |
* @brief Atomic operations. |
*/ |
#ifndef LIBC_arm32_ATOMIC_H_ |
37,26 → 38,80 |
/** Atomic addition. |
* |
* @param val Atomic value. |
* @param imm Value to add. |
* @param val Where to add. |
* @param i Value to be added. |
* |
* @return Value after addition. |
*/ |
static inline long atomic_add(atomic_t *val, int imm) |
static inline long atomic_add(atomic_t *val, int i) |
{ |
/* TODO */ |
return (val->count += imm); |
int ret; |
volatile long * mem = &(val->count); |
asm volatile ( |
"1: \n" |
"ldr r2, [%1] \n" |
"add r3, r2, %2 \n" |
"str r3, %0 \n" |
"swp r3, r3, [%1] \n" |
"cmp r3, r2 \n" |
"bne 1b \n" |
: "=m" (ret) |
: "r" (mem), "r" (i) |
: "r3", "r2" |
); |
return ret; |
} |
/** Atomic increment. |
* |
* @param val Variable to be incremented. |
*/ |
static inline void atomic_inc(atomic_t *val) { atomic_add(val, 1); } |
/** Atomic decrement. |
* |
* @param val Variable to be decremented. |
*/ |
static inline void atomic_dec(atomic_t *val) { atomic_add(val, -1); } |
static inline long atomic_preinc(atomic_t *val) { return atomic_add(val, 1) + 1; } |
static inline long atomic_predec(atomic_t *val) { return atomic_add(val, -1) - 1; } |
static inline long atomic_postinc(atomic_t *val) { return atomic_add(val, 1); } |
static inline long atomic_postdec(atomic_t *val) { return atomic_add(val, -1); } |
/** Atomic pre-increment. |
* |
* @param val Variable to be incremented. |
* @return Value after incrementation. |
*/ |
static inline long atomic_preinc(atomic_t *val) { return atomic_add(val, 1); } |
/** Atomic pre-decrement. |
* |
* @param val Variable to be decremented. |
* @return Value after decrementation. |
*/ |
static inline long atomic_predec(atomic_t *val) { return atomic_add(val, -1); } |
/** Atomic post-increment. |
* |
* @param val Variable to be incremented. |
* @return Value before incrementation. |
*/ |
static inline long atomic_postinc(atomic_t *val) { return atomic_add(val, 1) - 1; } |
/** Atomic post-decrement. |
* |
* @param val Variable to be decremented. |
* @return Value before decrementation. |
*/ |
static inline long atomic_postdec(atomic_t *val) { return atomic_add(val, -1) + 1; } |
#endif |
/** @} |
/trunk/uspace/libc/arch/arm32/include/endian.h |
---|
29,7 → 29,8 |
/** @addtogroup libcarm32 |
* @{ |
*/ |
/** @file |
/** @file |
* @brief Endianness definition. |
*/ |
#ifndef LIBC_arm32_ENDIAN_H_ |
/trunk/uspace/libc/arch/arm32/include/stackarg.h |
---|
1,5 → 1,5 |
/* |
* Copyright (c) 2006 Josef Cejka |
* Copyright (c) 2007 Michal Kebrt |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
30,6 → 30,7 |
* @{ |
*/ |
/** @file |
* @brief Empty. |
*/ |
#ifndef LIBC_arm32_STACKARG_H_ |
/trunk/uspace/libc/arch/arm32/include/faddr.h |
---|
1,5 → 1,5 |
/* |
* Copyright (c) 2005 Jakub Jermar |
* Copyright (c) 2007 Michal Kebrt |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
29,7 → 29,8 |
/** @addtogroup libcarm32 |
* @{ |
*/ |
/** @file |
/** @file |
* @brief Function address conversion. |
*/ |
#ifndef LIBC_arm32_FADDR_H_ |
37,13 → 38,9 |
#include <libarch/types.h> |
/** |
/** Calculate absolute address of function referenced by fptr pointer. |
* |
* Calculate absolute address of function |
* referenced by fptr pointer. |
* |
* @param f Function pointer. |
* |
*/ |
#define FADDR(f) (f) |
/trunk/uspace/libc/arch/arm32/include/limits.h |
---|
1,5 → 1,5 |
/* |
* Copyright (c) 2006 Josef Cejka |
* Copyright (c) 2007 Michal Kebrt |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
29,17 → 29,17 |
/** @addtogroup libcarm32 |
* @{ |
*/ |
/** @file |
* @ingroup libcarm32 |
/** @file |
* @brief Limits declarations. |
*/ |
#ifndef LIBC_arm32__LIMITS_H_ |
#define LIBC_arm32__LIMITS_H_ |
# define LONG_MIN MIN_INT32 |
# define LONG_MAX MAX_INT32 |
# define ULONG_MIN MIN_UINT32 |
# define ULONG_MAX MAX_UINT32 |
#define LONG_MIN MIN_INT32 |
#define LONG_MAX MAX_INT32 |
#define ULONG_MIN MIN_UINT32 |
#define ULONG_MAX MAX_UINT32 |
#endif |
/trunk/uspace/libc/arch/arm32/include/types.h |
---|
29,8 → 29,8 |
/** @addtogroup libcarm32 |
* @{ |
*/ |
/** @file |
* @ingroup libcarm32 |
/** @file |
* @brief Definitions of basic types like #uintptr_t. |
*/ |
#ifndef LIBC_arm32_TYPES_H_ |
/trunk/uspace/libc/arch/arm32/include/config.h |
---|
29,7 → 29,8 |
/** @addtogroup libcarm32 |
* @{ |
*/ |
/** @file |
/** @file |
* @brief Configuration constants. |
*/ |
#ifndef LIBC_arm32_CONFIG_H_ |
/trunk/uspace/libc/arch/arm32/include/thread.h |
---|
1,5 → 1,5 |
/* |
* Copyright (c) 2006 Jakub Jermar |
* Copyright (c) 2007 Pavel Jancik, Michal Kebrt |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
26,10 → 26,11 |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup libcia64 |
/** @addtogroup libcarm32 |
* @{ |
*/ |
/** @file |
* @brief Uspace threads and TLS. |
*/ |
#ifndef LIBC_arm32_THREAD_H_ |
37,24 → 38,61 |
#include <unistd.h> |
/** Stack initial size. */ |
#define THREAD_INITIAL_STACK_PAGES_NO 1 |
/** Offsets for accessing __thread variables are shifted 8 bytes higher. */ |
#define ARM_TP_OFFSET (-8) |
/** TCB (Thread Control Block) struct. |
* |
* TLS starts just after this struct. |
*/ |
typedef struct { |
/** psthread data. */ |
void *pst_data; |
/* TODO */ |
} tcb_t; |
/** Sets TLS address to the r9 register. |
* |
* @param tcb TCB (TLS starts behind) |
*/ |
static inline void __tcb_set(tcb_t *tcb) |
{ |
/* TODO */ |
void *tls = (void *)tcb; |
tls += sizeof(tcb_t) + ARM_TP_OFFSET; |
asm volatile ( |
"mov r9, %0" |
: |
: "r"(tls) |
); |
} |
/** Returns TCB address. |
* |
* @return TCB address (starts before TLS which address is stored in r9 register). |
*/ |
static inline tcb_t *__tcb_get(void) |
{ |
/* TODO */ |
return NULL; |
void *ret; |
asm volatile ( |
"mov %0, r9" |
: "=r"(ret) |
); |
return (tcb_t *)(ret - ARM_TP_OFFSET - sizeof(tcb_t)); |
} |
/** Returns TLS address stored. |
* |
* Implemented in assembly. |
* |
* @return TLS address stored in r9 register |
*/ |
extern uintptr_t __aeabi_read_tp(void); |
#endif |
/** @} |