DrSocalkwe3n/luajit
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ARM: Add CPU detection.

Browse Source
This commit is contained in:
Mike Pall
2011-05-26 17:58:29 +02:00
parent 185554b682
commit ae3179926a
3 changed files with 34 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
src/lib_jit.c
View File

@@ -520,6 +520,10 @@ JIT_PARAMDEF(JIT_PARAMINIT)
};
#endif
#if LJ_TARGET_ARM && LJ_TARGET_LINUX
#include <sys/utsname.h>
#endif
/* Arch-dependent CPU detection. */
static uint32_t jit_cpudetect(lua_State *L)
{
@@ -563,7 +567,27 @@ static uint32_t jit_cpudetect(lua_State *L)
#endif
#endif
#elif LJ_TARGET_ARM
/* NYI */
/* Compile-time ARM CPU detection. */
#if __ARM_ARCH_7__ || __ARM_ARCH_7A__ || __ARM_ARCH_7R__
flags |= JIT_F_ARMV6|JIT_F_ARMV6T2|JIT_F_ARMV7;
#elif __ARM_ARCH_6T2__
flags |= JIT_F_ARMV6|JIT_F_ARMV6T2;
#elif __ARM_ARCH_6__ || __ARM_ARCH_6J__ || __ARM_ARCH_6Z__ || __ARM_ARCH_6ZK__
flags |= JIT_F_ARMV6;
#endif
/* Runtime ARM CPU detection. */
#if LJ_TARGET_LINUX
if (!(flags & JIT_F_ARMV7)) {
struct utsname ut;
uname(&ut);
if (strncmp(ut.machine, "armv", 4) == 0) {
if (ut.machine[4] >= '7')
flags |= JIT_F_ARMV6|JIT_F_ARMV6T2|JIT_F_ARMV7;
else if (ut.machine[4] == '6')
flags |= JIT_F_ARMV6;
}
}
#endif
#elif LJ_TARGET_PPC
/* Nothing to do. */
#else