DrSocalkwe3n/luajit
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Windows/ARM64: Add initial support.

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Only builds with native ARM64 Visual Studio for now.
Thanks to vanc and Stephen Just. #593 #964
This commit is contained in:
Mike Pall
2023-09-10 05:20:22 +02:00
parent 566532b807
commit cb413bf8f4
7 changed files with 147 additions and 37 deletions
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24
src/lj_def.h
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@@ -146,15 +146,9 @@ typedef uintptr_t BloomFilter;
#define LJ_UNLIKELY(x) __builtin_expect(!!(x), 0)
#define lj_ffs(x) ((uint32_t)__builtin_ctz(x))
/* Don't ask ... */
#if defined(__INTEL_COMPILER) && (defined(__i386__) || defined(__x86_64__))
static LJ_AINLINE uint32_t lj_fls(uint32_t x)
{
uint32_t r; __asm__("bsrl %1, %0" : "=r" (r) : "rm" (x) : "cc"); return r;
}
#else
#define lj_fls(x) ((uint32_t)(__builtin_clz(x)^31))
#endif
#define lj_ffs64(x) ((uint32_t)__builtin_ctzll(x))
#define lj_fls64(x) ((uint32_t)(__builtin_clzll(x)^63))
#if defined(__arm__)
static LJ_AINLINE uint32_t lj_bswap(uint32_t x)
@@ -265,8 +259,12 @@ static LJ_AINLINE uint32_t lj_fls(uint32_t x)
#else
unsigned char _BitScanForward(unsigned long *, unsigned long);
unsigned char _BitScanReverse(unsigned long *, unsigned long);
unsigned char _BitScanForward64(unsigned long *, uint64_t);
unsigned char _BitScanReverse64(unsigned long *, uint64_t);
#pragma intrinsic(_BitScanForward)
#pragma intrinsic(_BitScanReverse)
#pragma intrinsic(_BitScanForward64)
#pragma intrinsic(_BitScanReverse64)
static LJ_AINLINE uint32_t lj_ffs(uint32_t x)
{
@@ -277,6 +275,16 @@ static LJ_AINLINE uint32_t lj_fls(uint32_t x)
{
unsigned long r; _BitScanReverse(&r, x); return (uint32_t)r;
}
static LJ_AINLINE uint32_t lj_ffs64(uint64_t x)
{
unsigned long r; _BitScanForward64(&r, x); return (uint32_t)r;
}
static LJ_AINLINE uint32_t lj_fls64(uint64_t x)
{
unsigned long r; _BitScanReverse64(&r, x); return (uint32_t)r;
}
#endif
unsigned long _byteswap_ulong(unsigned long);