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Introduce native support for MacOS ARM64

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There's a new program named ape/ape-m1.c which will be used to build an
embeddable binary that can load ape and elf executables. The support is
mostly working so far, but still chasing down ABI issues.
This commit is contained in:
Justine Tunney 2023-05-18 19:05:08 -07:00
parent b852650c08
commit 1422e96b4e
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GPG key ID: BE714B4575D6E328
757 changed files with 2988 additions and 1321 deletions
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15
libc/tinymath/ilogbl.c
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@ -29,6 +29,7 @@
#include "libc/math.h"
#include "libc/tinymath/internal.h"
#include "libc/tinymath/ldshape.internal.h"
#if !(LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024)
asm(".ident\t\"\\n\\n\
Musl libc (MIT License)\\n\
@ -39,11 +40,10 @@ asm(".include \"libc/disclaimer.inc\"");
/**
* Returns log₂𝑥 exponent part of double.
*/
int ilogbl(long double x) {
#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
return ilogb(x);
#elif LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
// #pragma STDC FENV_ACCESS ON
int ilogbl(long double x)
{
#if LDBL_MANT_DIG == 64 && LDBL_MAX_EXP == 16384
// #pragma STDC FENV_ACCESS ON
union ldshape u = {x};
uint64_t m = u.i.m;
int e = u.i.se & 0x7fff;
@ -63,7 +63,7 @@ int ilogbl(long double x) {
}
return e - 0x3fff;
#elif LDBL_MANT_DIG == 113 && LDBL_MAX_EXP == 16384
// #pragma STDC FENV_ACCESS ON
// #pragma STDC FENV_ACCESS ON
union ldshape u = {x};
int e = u.i.se & 0x7fff;
@ -82,8 +82,7 @@ int ilogbl(long double x) {
return u.f ? FP_ILOGBNAN : INT_MAX;
}
return e - 0x3fff;
#else
#error "architecture unsupported"
#endif
}
#endif /* long double is long */