Commit a95c6790 authored by bellard's avatar bellard
Browse files

arm support


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@221 c046a42c-6fe2-441c-8c8c-71466251a162
parent 0f533160
......@@ -238,7 +238,10 @@ static inline void stb(void *ptr, int v)
*(uint8_t *)ptr = v;
}
#ifdef WORDS_BIGENDIAN
/* NOTE: on arm, putting 2 in /proc/sys/debug/alignment so that the
kernel handles unaligned load/stores may give better results, but
it is a system wide setting : bad */
#if defined(WORDS_BIGENDIAN) || defined(__arm__)
/* conservative code for little endian unaligned accesses */
static inline int lduw(void *ptr)
......@@ -329,24 +332,50 @@ static inline float ldfl(void *ptr)
return u.f;
}
static inline void stfl(void *ptr, float v)
{
union {
float f;
uint32_t i;
} u;
u.f = v;
stl(ptr, u.i);
}
#if defined(__arm__) && !defined(WORDS_BIGENDIAN)
/* NOTE: arm is horrible as double 32 bit words are stored in big endian ! */
static inline double ldfq(void *ptr)
{
union {
double d;
uint64_t i;
uint32_t tab[2];
} u;
u.i = ldq(ptr);
u.tab[1] = ldl(ptr);
u.tab[0] = ldl(ptr + 4);
return u.d;
}
static inline void stfl(void *ptr, float v)
static inline void stfq(void *ptr, double v)
{
union {
float f;
uint32_t i;
double d;
uint32_t tab[2];
} u;
u.f = v;
stl(ptr, u.i);
u.d = v;
stl(ptr, u.tab[1]);
stl(ptr + 4, u.tab[0]);
}
#else
static inline double ldfq(void *ptr)
{
union {
double d;
uint64_t i;
} u;
u.i = ldq(ptr);
return u.d;
}
static inline void stfq(void *ptr, double v)
......@@ -358,6 +387,7 @@ static inline void stfq(void *ptr, double v)
u.d = v;
stq(ptr, u.i);
}
#endif
#else
......
......@@ -246,6 +246,18 @@ static inline int testandset (int *p)
}
#endif
#ifdef __arm__
static inline int testandset (int *spinlock)
{
register unsigned int ret;
__asm__ __volatile__("swp %0, %1, [%2]"
: "=r"(ret)
: "0"(1), "r"(spinlock));
return ret;
}
#endif
typedef int spinlock_t;
#define SPIN_LOCK_UNLOCKED 0
......
......@@ -104,6 +104,16 @@ static void inline flush_icache_range(unsigned long start, unsigned long stop)
#endif
#ifdef __arm__
static inline void flush_icache_range(unsigned long start, unsigned long stop)
{
register unsigned long _beg __asm ("a1") = start;
register unsigned long _end __asm ("a2") = stop;
register unsigned long _flg __asm ("a3") = 0;
__asm __volatile__ ("swi 0x9f0002" : : "r" (_beg), "r" (_end), "r" (_flg));
}
#endif
extern FILE *logfile;
extern int loglevel;
......@@ -166,6 +176,7 @@ enum {
NB_OPS,
};
#include "dyngen.h"
#include "op-i386.h"
/* operand size */
......
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