/* -*- mode:c; c-file-style:"k&r"; c-basic-offset: 4; tab-width:4; indent-tabs-mode:nil; mode:auto-fill; fill-column:78; -*- */
/* vim: set ts=4 sw=4 et tw=78 fo=cqt wm=0: */
/* Copyright (C) 2014 OSCAR lab, Stony Brook University
This file is part of Graphene Library OS.
Graphene Library OS 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.
Graphene Library OS 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 . */
/*
* shim_internal.h
*/
#ifndef _SHIM_INTERNAL_H_
#define _SHIM_INTERNAL_H_
#ifndef IN_SHIM
#error "this header file can only be used inside SHIM"
#endif
#define attribute_hidden __attribute__ ((visibility ("hidden")))
#define alias_str(name) #name
#define extern_alias(name) \
extern __typeof(name) shim_##name __attribute ((alias (alias_str(name))))
#include
#include
#include
#include
/* important macros */
#define get_cur_tid() (SHIM_GET_TLS()->tid)
#define PAL_NATIVE_ERRNO (SHIM_GET_TLS()->pal_errno)
#define INTERNAL_TID_BASE ((IDTYPE) 1 << (sizeof(IDTYPE) * 8 - 1))
#define IS_INTERNAL_TID(tid) ((tid) >= INTERNAL_TID_BASE)
#define IS_INTERNAL(thread) ((thread)->tid >= INTERNAL_TID_BASE)
#define TID_PRINTFMT
/* debug message printout */
# define DEBUGBUF_SIZE 80
struct debug_buf {
int start;
int end;
char buf[DEBUGBUF_SIZE];
};
# include
# include
# include
extern PAL_HANDLE debug_handle;
# include
void debug_printf (const char * fmt, ...);
void debug_puts (const char * str);
void debug_putch (int ch);
void debug_vprintf (const char * fmt, va_list * ap);
# define VMID_PREFIX "[P%04u] "
# define TID_PREFIX "[%-5u] "
# define NOID_PREFIX "[ ] "
# define debug(fmt, ...) \
do { \
if (debug_handle) \
debug_printf((fmt), ##__VA_ARGS__); \
} while (0)
/* print system messages */
#define SYSPRINT_BUFFER_SIZE 256
void handle_printf (PAL_HANDLE hdl, const char * fmt, ...);
#define __sys_printf(fmt, ...) \
do { \
PAL_HANDLE _hdl = __open_shim_stdio(); \
if (_hdl) \
handle_printf(_hdl, (fmt), ##__VA_ARGS__); \
} while (0)
#define __sys_fprintf(hdl, fmt, ...) \
do { \
handle_printf((hdl), (fmt), ##__VA_ARGS__); \
} while (0)
#define sys_printf(fmt, ...) \
do { \
master_lock(); \
__sys_printf((fmt), ##__VA_ARGS__); \
master_unlock(); \
} while (0)
#define sys_fprintf(hdl, fmt, ...) \
do { \
master_lock(); \
__sys_fprintf((hdl), (fmt), ##__VA_ARGS__); \
master_unlock(); \
} while (0)
extern PAL_HANDLE shim_stdio;
static inline PAL_HANDLE __open_shim_stdio (void)
{
if (shim_stdio == (PAL_HANDLE) -1)
return NULL;
if (shim_stdio)
return shim_stdio;
shim_stdio = DkStreamOpen("dev:tty", PAL_ACCESS_RDWR, 0, 0, 0);
if (!shim_stdio) {
shim_stdio = (PAL_HANDLE) -1;
return NULL;
}
return shim_stdio;
}
int shim_terminate (void);
/* assertions */
#define USE_PAUSE 1
#define USE_ASSERT 1
extern bool in_gdb;
static inline void do_pause (void);
#define BREAK_GDB() do { asm volatile ("int $3"); } while (0)
#if USE_PAUSE == 1
# define pause() \
do { \
if (in_gdb) BREAK_GDB(); else do_pause(); \
} while (0)
#else
# define pause() do { if (in_gdb) BREAK_GDB(); } while (0)
#endif
#define bug() \
do { \
__sys_printf("bug() " __FILE__ ":%d\n", __LINE__); \
pause(); \
shim_terminate(); \
} while (0)
#if USE_ASSERT == 1
# define assert(test) \
({ \
long _val = (long) (test); \
(!(_val)) \
? ({ \
__sys_printf("assert failed " __FILE__ ":%d " #test " (value:%x)\n", \
__LINE__, _val); \
pause(); \
shim_terminate(); }) \
: (void) 0; \
})
#else
# define assert(test) do {} while (0)
#endif
#define DEBUG_HERE() \
do { debug("%s (" __FILE__ ":%d)\n", __func__, __LINE__); } while (0)
/* definition for syscall table */
void handle_signal (bool delayed_only);
long convert_pal_errno (long err);
#define PAL_ERRNO convert_pal_errno(PAL_NATIVE_ERRNO)
#define SHIM_ARG_TYPE long
#ifdef PROFILE
# define ENTER_TIME SHIM_GET_TLS()->context.enter_time
# define BEGIN_SYSCALL_PROFILE() \
do { ENTER_TIME = GET_PROFILE_INTERVAL(); } while (0)
# define END_SYSCALL_PROFILE(name) \
do { unsigned long _interval = GET_PROFILE_INTERVAL(); \
if (_interval - ENTER_TIME > 1000) \
SAVE_PROFILE_INTERVAL_SET(syscall_##name##_slow, ENTER_TIME, _interval); \
else \
SAVE_PROFILE_INTERVAL_SET(syscall_##name, ENTER_TIME, _interval); \
ENTER_TIME = 0; } while (0)
#else
# define BEGIN_SYSCALL_PROFILE() do {} while (0)
# define END_SYSCALL_PROFILE(name) do {} while (0)
#endif
void check_stack_hook (void);
#define BEGIN_SHIM(name, args ...) \
SHIM_ARG_TYPE __shim_##name (args) { \
SHIM_ARG_TYPE ret = 0; \
/* handle_signal(true); */ \
/* check_stack_hook(); */ \
BEGIN_SYSCALL_PROFILE();
#define END_SHIM(name) \
END_SYSCALL_PROFILE(name); \
handle_signal(false); \
return ret; \
}
#define DEFINE_SHIM_SYSCALL(name, n, func, ...) \
DEFINE_PROFILE_INTERVAL(syscall_##name##_slow, syscall); \
DEFINE_PROFILE_INTERVAL(syscall_##name, syscall); \
SHIM_SYSCALL_##n (name, func, __VA_ARGS__) \
EXPORT_SHIM_SYSCALL (name, n, __VA_ARGS__)
#define PROTO_ARGS_0() void
#define PROTO_ARGS_1(t, a) t a
#define PROTO_ARGS_2(t, a, rest ...) t a, PROTO_ARGS_1(rest)
#define PROTO_ARGS_3(t, a, rest ...) t a, PROTO_ARGS_2(rest)
#define PROTO_ARGS_4(t, a, rest ...) t a, PROTO_ARGS_3(rest)
#define PROTO_ARGS_5(t, a, rest ...) t a, PROTO_ARGS_4(rest)
#define PROTO_ARGS_6(t, a, rest ...) t a, PROTO_ARGS_5(rest)
#define CAST_ARGS_0()
#define CAST_ARGS_1(t, a) (SHIM_ARG_TYPE) a
#define CAST_ARGS_2(t, a, rest ...) (SHIM_ARG_TYPE) a, CAST_ARGS_1(rest)
#define CAST_ARGS_3(t, a, rest ...) (SHIM_ARG_TYPE) a, CAST_ARGS_2(rest)
#define CAST_ARGS_4(t, a, rest ...) (SHIM_ARG_TYPE) a, CAST_ARGS_3(rest)
#define CAST_ARGS_5(t, a, rest ...) (SHIM_ARG_TYPE) a, CAST_ARGS_4(rest)
#define CAST_ARGS_6(t, a, rest ...) (SHIM_ARG_TYPE) a, CAST_ARGS_5(rest)
#define DEFINE_SHIM_FUNC(func, n, r, args ...) \
r func (PROTO_ARGS_##n (args));
#define TYPE_HASH(t) ({ const char * _s = #t; \
((uint16_t) _s[0] << 8) + _s[1]; })
#define POINTER_TYPE(t) ({ int _h = TYPE_HASH(t); \
_h == TYPE_HASH(void *) || _h == TYPE_HASH(char *) || \
_h == TYPE_HASH(const); })
#define EXPORT_SHIM_SYSCALL(name, n, r, args ...) \
r shim_##name (PROTO_ARGS_##n (args)) { \
SHIM_ARG_TYPE ret = __shim_##name (CAST_ARGS_##n (args)); \
if (POINTER_TYPE(r)) { \
if ((unsigned long) ret >= -4095L) return (r) 0; \
} else { \
if ((int) ret < 0) return (r) -1; \
} \
return (r) ret; \
}
#define PARSE_SYSCALL1(name, ...) \
if (debug_handle) \
parse_syscall_before(__NR_##name, #name, ##__VA_ARGS__);
#define PARSE_SYSCALL2(name, ...) \
if (debug_handle) \
parse_syscall_after(__NR_##name, #name, ##__VA_ARGS__);
void parse_syscall_before (int sysno, const char * name, int nr, ...);
void parse_syscall_after (int sysno, const char * name, int nr, ...);
#define SHIM_SYSCALL_0(name, func, r) \
BEGIN_SHIM(name, void) \
PARSE_SYSCALL1(name, 0); \
r __ret = func(); \
PARSE_SYSCALL2(name, 0, #r, __ret); \
ret = (SHIM_ARG_TYPE) __ret; \
END_SHIM(name)
#define SHIM_SYSCALL_1(name, func, r, t1, a1) \
BEGIN_SHIM(name, SHIM_ARG_TYPE __arg1) \
t1 a1 = (t1) __arg1; \
PARSE_SYSCALL1(name, 1, #t1, a1); \
r __ret = func(a1); \
PARSE_SYSCALL2(name, 1, #r, __ret, #t1, a1); \
ret = (SHIM_ARG_TYPE) __ret; \
END_SHIM(name)
#define SHIM_SYSCALL_2(name, func, r, t1, a1, t2, a2) \
BEGIN_SHIM(name, SHIM_ARG_TYPE __arg1, SHIM_ARG_TYPE __arg2) \
t1 a1 = (t1) __arg1; \
t2 a2 = (t2) __arg2; \
PARSE_SYSCALL1(name, 2, #t1, a1, #t2, a2); \
r __ret = func(a1, a2); \
PARSE_SYSCALL2(name, 2, #r, __ret, #t1, a1, #t2, a2); \
ret = (SHIM_ARG_TYPE) __ret; \
END_SHIM(name)
#define SHIM_SYSCALL_3(name, func, r, t1, a1, t2, a2, t3, a3) \
BEGIN_SHIM(name, SHIM_ARG_TYPE __arg1, SHIM_ARG_TYPE __arg2, \
SHIM_ARG_TYPE __arg3) \
t1 a1 = (t1) __arg1; \
t2 a2 = (t2) __arg2; \
t3 a3 = (t3) __arg3; \
PARSE_SYSCALL1(name, 3, #t1, a1, #t2, a2, #t3, a3); \
r __ret = func(a1, a2, a3); \
PARSE_SYSCALL2(name, 3, #r, __ret, #t1, a1, #t2, a2, #t3, a3); \
ret = (SHIM_ARG_TYPE) __ret; \
END_SHIM(name)
#define SHIM_SYSCALL_4(name, func, r, t1, a1, t2, a2, t3, a3, t4, a4) \
BEGIN_SHIM(name, SHIM_ARG_TYPE __arg1, SHIM_ARG_TYPE __arg2, \
SHIM_ARG_TYPE __arg3, SHIM_ARG_TYPE __arg4) \
t1 a1 = (t1) __arg1; \
t2 a2 = (t2) __arg2; \
t3 a3 = (t3) __arg3; \
t4 a4 = (t4) __arg4; \
PARSE_SYSCALL1(name, 4, #t1, a1, #t2, a2, #t3, a3, #t4, a4); \
r __ret = func(a1, a2, a3, a4); \
PARSE_SYSCALL2(name, 4, #r, __ret, #t1, a1, #t2, a2, #t3, a3, \
#t4, a4); \
ret = (SHIM_ARG_TYPE) __ret; \
END_SHIM(name)
#define SHIM_SYSCALL_5(name, func, r, t1, a1, t2, a2, t3, a3, t4, a4, t5, a5) \
BEGIN_SHIM(name, SHIM_ARG_TYPE __arg1, SHIM_ARG_TYPE __arg2, \
SHIM_ARG_TYPE __arg3, SHIM_ARG_TYPE __arg4, \
SHIM_ARG_TYPE __arg5) \
t1 a1 = (t1) __arg1; \
t2 a2 = (t2) __arg2; \
t3 a3 = (t3) __arg3; \
t4 a4 = (t4) __arg4; \
t5 a5 = (t5) __arg5; \
PARSE_SYSCALL1(name, 5, #t1, a1, #t2, a2, #t3, a3, #t4, a4, \
#t5, a5); \
r __ret = func(a1, a2, a3, a4, a5); \
PARSE_SYSCALL2(name, 5, #r, __ret, #t1, a1, #t2, a2, #t3, a3, \
#t4, a4, #t5, a5); \
ret = (SHIM_ARG_TYPE) __ret; \
END_SHIM(name)
#define SHIM_SYSCALL_6(name, func, r, t1, a1, t2, a2, t3, a3, t4, a4, t5, a5, t6, a6) \
BEGIN_SHIM(name, SHIM_ARG_TYPE __arg1, SHIM_ARG_TYPE __arg2, \
SHIM_ARG_TYPE __arg3, SHIM_ARG_TYPE __arg4, \
SHIM_ARG_TYPE __arg5, SHIM_ARG_TYPE __arg6) \
t1 a1 = (t1) __arg1; \
t2 a2 = (t2) __arg2; \
t3 a3 = (t3) __arg3; \
t4 a4 = (t4) __arg4; \
t5 a5 = (t5) __arg5; \
t6 a6 = (t6) __arg6; \
PARSE_SYSCALL1(name, 6, #t1, a1, #t2, a2, #t3, a3, #t4, a4, \
#t5, a5, #t6, a6); \
r __ret = func(a1, a2, a3, a4, a5, a6); \
PARSE_SYSCALL2(name, 6, #r, __ret, #t1, a1, #t2, a2, #t3, a3, \
#t4, a4, #t5, a5, #t6, a6); \
ret = (SHIM_ARG_TYPE) __ret; \
END_SHIM(name)
#define SHIM_PROTO_ARGS_0 void
#define SHIM_PROTO_ARGS_1 SHIM_ARG_TYPE __arg1
#define SHIM_PROTO_ARGS_2 SHIM_PROTO_ARGS_1, SHIM_ARG_TYPE __arg2
#define SHIM_PROTO_ARGS_3 SHIM_PROTO_ARGS_2, SHIM_ARG_TYPE __arg3
#define SHIM_PROTO_ARGS_4 SHIM_PROTO_ARGS_3, SHIM_ARG_TYPE __arg4
#define SHIM_PROTO_ARGS_5 SHIM_PROTO_ARGS_4, SHIM_ARG_TYPE __arg5
#define SHIM_PROTO_ARGS_6 SHIM_PROTO_ARGS_5, SHIM_ARG_TYPE __arg6
#define SHIM_PASS_ARGS_1 __arg1
#define SHIM_PASS_ARGS_2 SHIM_PASS_ARGS_1, __arg2
#define SHIM_PASS_ARGS_3 SHIM_PASS_ARGS_2, __arg3
#define SHIM_PASS_ARGS_4 SHIM_PASS_ARGS_3, __arg4
#define SHIM_PASS_ARGS_5 SHIM_PASS_ARGS_4, __arg5
#define SHIM_PASS_ARGS_6 SHIM_PASS_ARGS_5, __arg6
#define DO_SYSCALL(...) DO_SYSCALL2(__VA_ARGS__)
#define DO_SYSCALL2(n, ...) -ENOSYS
#define DO_SYSCALL_0(sysno) -ENOSYS
#define DO_SYSCALL_1(sysno, ...) DO_SYSCALL(1, sysno, SHIM_PASS_ARGS_1)
#define DO_SYSCALL_2(sysno, ...) DO_SYSCALL(2, sysno, SHIM_PASS_ARGS_2)
#define DO_SYSCALL_3(sysno, ...) DO_SYSCALL(3, sysno, SHIM_PASS_ARGS_3)
#define DO_SYSCALL_4(sysno, ...) DO_SYSCALL(4, sysno, SHIM_PASS_ARGS_4)
#define DO_SYSCALL_5(sysno, ...) DO_SYSCALL(5, sysno, SHIM_PASS_ARGS_5)
#define DO_SYSCALL_6(sysno, ...) DO_SYSCALL(6, sysno, SHIM_PASS_ARGS_6)
#define SHIM_SYSCALL_PASSTHROUGH(name, n, ...) \
DEFINE_PROFILE_INTERVAL(syscall_##name##_slow, syscall); \
DEFINE_PROFILE_INTERVAL(syscall_##name, syscall); \
BEGIN_SHIM(name, SHIM_PROTO_ARGS_##n) \
debug("WARNING: shim_" #name " not implemented\n"); \
ret = DO_SYSCALL_##n(__NR_##name); \
END_SHIM(name) \
EXPORT_SHIM_SYSCALL(name, n, __VA_ARGS__)
#ifndef container_of
/**
* container_of - cast a member of a structure out to the containing structure
* @ptr: the pointer to the member.
* @type: the type of the container struct this is embedded in.
* @member: the name of the member within the struct.
*
*/
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
#endif
#define CONCAT2(t1, t2) __CONCAT2(t1, t2)
#define __CONCAT2(t1, t2) t1##_##t2
#define CONCAT3(t1, t2, t3) __CONCAT3(t1, t2, t3)
#define __CONCAT3(t1, t2, t3) t1##_##t2##_##t3
/* Some SHIM internal errno */
#define EISLINK 141 /* the path is a link */
#define ECONTAINLINK 142 /* part of path contains a link */
#define ENOTLINK 143 /* the path is not a link */
#define ESKIPPED 144 /* skip looking up current path */
#define PAL_CB(member) (pal_control.member)
#define LOCK_FREE ((IDTYPE) -1)
extern bool lock_enabled;
static inline void enable_locking (void)
{
if (!lock_enabled)
lock_enabled = true;
}
static inline PAL_HANDLE thread_create (void * func, void * arg, int option)
{
assert(lock_enabled);
return DkThreadCreate(func, arg, option);
}
static inline void __disable_preempt (shim_tcb_t * tcb)
{
//tcb->context.syscall_nr += SYSCALL_NR_PREEMPT_INC;
tcb->context.preempt++;
//debug("disable preempt: %d\n", tcb->context.preempt & ~SIGNAL_DELAYED);
}
static inline void disable_preempt (shim_tcb_t * tcb)
{
if (!tcb && !(tcb = SHIM_GET_TLS()))
return;
__disable_preempt(tcb);
}
static inline void __enable_preempt (shim_tcb_t * tcb)
{
//tcb->context.syscall_nr -= SYSCALL_NR_PREEMPT_INC;
tcb->context.preempt--;
//debug("enable preempt: %d\n", tcb->context.preempt & ~SIGNAL_DELAYED);
}
void __handle_signal (shim_tcb_t * tcb, int sig, ucontext_t * uc);
static inline void enable_preempt (shim_tcb_t * tcb)
{
if (!tcb && !(tcb = SHIM_GET_TLS()))
return;
if (!(tcb->context.preempt & ~SIGNAL_DELAYED))
return;
if ((tcb->context.preempt & ~SIGNAL_DELAYED) == 1)
__handle_signal(tcb, 0, NULL);
__enable_preempt(tcb);
}
#define DEBUG_LOCK 0
#define lock_created(l) ((l).lock != NULL)
#define clear_lock(l) do { (l).lock = NULL; (l).owner = 0; } while (0)
#define create_lock(l) \
do { \
(l).lock = DkSemaphoreCreate(0, 1); \
/* (l).owner = LOCK_FREE; */ \
/* (l).reowned = 0; */ \
} while (0)
#define destroy_lock(l) \
do { \
DkObjectClose((l).lock); \
} while (0)
#define try_create_lock(l) \
do { if (!lock_created(l)) create_lock(l); } while (0)
#if DEBUG_LOCK == 1
# define lock(l) __lock(&(l), #l, __FILE__, __LINE__)
static inline void __lock (LOCKTYPE * l,
const char * name, const char * file, int line)
#else
# define lock(l) __lock(&(l))
static inline void __lock (LOCKTYPE * l)
#endif
{
if (!lock_enabled || !l->lock)
return;
shim_tcb_t * tcb = SHIM_GET_TLS();
disable_preempt(tcb);
#if DEBUG_LOCK == 1
debug("try lock(%s=%p) %s:%d\n", name, l, file, line);
#endif
while (!DkObjectsWaitAny(1, &l->lock, NO_TIMEOUT));
l->owner = tcb->tid;
#if DEBUG_LOCK == 1
debug("lock(%s=%p) by %s:%d\n", name, l, file, line);
#endif
}
#if DEBUG_LOCK == 1
# define unlock(l) __unlock(&(l), #l, __FILE__, __LINE__)
static inline void __unlock (LOCKTYPE * l,
const char * name, const char * file, int line)
#else
# define unlock(l) __unlock(&(l))
static inline void __unlock (LOCKTYPE * l)
#endif
{
if (!lock_enabled || !l->lock)
return;
shim_tcb_t * tcb = SHIM_GET_TLS();
#if DEBUG_LOCK == 1
debug("unlock(%s=%p) %s:%d\n", name, l, file, line);
#endif
l->owner = 0;
DkSemaphoreRelease(l->lock, 1);
enable_preempt(tcb);
}
static inline bool __locked (LOCKTYPE * l)
{
if (!lock_enabled || !l->lock)
return false;
shim_tcb_t * tcb = SHIM_GET_TLS();
return tcb->tid == l->owner;
}
#define locked(l) __locked(&(l))
#define DEBUG_MASTER_LOCK 0
extern LOCKTYPE __master_lock;
#if DEBUG_MASTER_LOCK == 1
# define master_lock() \
do { \
lock(__master_lock); \
pal_printf("maste lock " __FILE__ ":%d\n", __LINE__); \
} while (0)
# define master_unlock() \
do { \
pal_printf("maste unlock " __FILE__ ":%d\n", __LINE__); \
unlock(__master_lock); \
} while (0)
#else
# define master_lock() do { lock(__master_lock); } while (0)
# define master_unlock() do { unlock(__master_lock); } while (0)
#endif
static inline void create_lock_runtime (LOCKTYPE * l)
{
if (!lock_created(*l)) {
master_lock();
if (!lock_created(*l))
create_lock(*l);
master_unlock();
}
}
static inline void create_event (AEVENTTYPE * e)
{
if (!e->event)
e->event = DkStreamOpen("pipe:", PAL_ACCESS_RDWR, 0, 0,
PAL_OPTION_NONBLOCK);
}
#define event_created(e) ((e)->event != NULL)
#define event_handle(e) ((e)->event)
static inline void destroy_event (AEVENTTYPE * e)
{
if (e->event) {
DkObjectClose(e->event);
e->event = NULL;
}
}
static inline void set_event (AEVENTTYPE * e, int n)
{
if (e->event) {
char bytes[n];
DkStreamWrite(e->event, 0, n, bytes, NULL);
}
}
static inline void wait_event (AEVENTTYPE * e)
{
if (e->event) {
char byte;
int n;
do {
if (!DkObjectsWaitAny(1, &e->event, NO_TIMEOUT))
continue;
n = DkStreamRead(e->event, 0, 1, &byte, NULL, 0);
} while (!n);
}
}
static inline void clear_event (AEVENTTYPE * e)
{
if (e->event) {
char bytes[100];
int n;
do {
n = DkStreamRead(e->event, 0, 100, bytes, NULL, 0);
} while (n == 100);
}
}
static inline void do_pause (void)
{
bool go = false;
while (!go)
DkThreadDelayExecution(60 * 60 * 1000000ULL);
}
/* reference counter APIs */
#define REF_GET(ref) atomic_read(&ref)
#define REF_SET(ref, count) atomic_set(&ref, count)
static inline int __ref_inc (REFTYPE * ref)
{
register int _c;
do {
_c = atomic_read(ref);
assert(_c >= 0);
} while (atomic_cmpxchg(ref, _c, _c + 1) != _c);
return _c + 1;
}
#define REF_INC(ref) __ref_inc(&(ref))
static inline int __ref_dec (REFTYPE * ref)
{
register int _c;
do {
_c = atomic_read(ref);
assert(_c > 0);
if (!_c)
return 0;
} while (atomic_cmpxchg(ref, _c, _c - 1) != _c);
return _c - 1;
}
#define REF_DEC(ref) __ref_dec(&(ref))
/* interger hash functions */
static inline uint32_t hash32 (uint32_t key)
{
key = ~key + (key << 15);
key = key ^ (key >> 12);
key = key + (key << 2);
key = key ^ (key >> 4);
key = (key + (key << 3)) + (key << 11);
key = key ^ (key >> 16);
return key;
}
static inline uint64_t hash64 (uint64_t key)
{
key = (~key) + (key << 21);
key = key ^ (key >> 24);
key = (key + (key << 3)) + (key << 8);
key = key ^ (key >> 14);
key = (key + (key << 2)) + (key << 4);
key = key ^ (key >> 28);
key = key + (key << 31);
return key;
}
#ifndef __alloca
# define __alloca __builtin_alloca
#endif
extern unsigned long allocsize;
extern unsigned long allocshift;
extern unsigned long allocmask;
void * __system_malloc (size_t size);
void __system_free (void * addr, size_t size);
#define system_malloc(size) __system_malloc(size)
#define system_free(addr, size) __system_free(addr, size)
extern void * migrated_memory_start;
extern void * migrated_memory_end;
#define MEMORY_MIGRATED(mem) \
((void *) mem >= migrated_memory_start && \
(void *) mem < migrated_memory_end)
extern void * __load_address, * __load_address_end;
extern void * __code_address, * __code_address_end;
int shim_clean (void);
unsigned long parse_int (const char * str);
extern void * initial_stack;
extern const char ** initial_envp;
#define ALIGNED(addr) (!(((unsigned long) addr) & allocshift))
#define ALIGN_UP(addr) \
((typeof(addr)) ((((unsigned long) addr) + allocshift) & allocmask))
#define ALIGN_DOWN(addr) \
((typeof(addr)) (((unsigned long) addr) & allocmask))
#define switch_stack(stack_top) \
({ \
void * _rsp, * _rbp; \
void * _stack = (stack_top); \
asm volatile ("movq %%rsp, %0" : "=r"(_rsp) :: "memory"); \
asm volatile ("movq %%rbp, %0" : "=r"(_rbp) :: "memory"); \
_rsp = _stack - (_rbp - _rsp); \
_rbp = _stack; \
asm volatile ("movq %0, %%rsp" :: "r"(_rsp) : "memory"); \
asm volatile ("movq %0, %%rbp" :: "r"(_rbp) : "memory"); \
asm volatile ("movq %%rbp, %0" : "=r"(_stack) :: "memory"); \
_stack; \
})
#define current_stack() \
({ \
void * _rsp; \
asm volatile ("movq %%rsp, %0" : "=r"(_rsp) :: "memory"); \
_rsp; \
})
void get_brk_region (void ** start, void ** end, void ** current);
int init_randgen (void);
int init_brk (void);
int init_heap (void);
int init_internal_map (void);
int init_loader (void);
int init_manifest (PAL_HANDLE manifest_handle);
#endif /* _PAL_INTERNAL_H_ */