use alt signal stack when present for implementation-internal signals

[musl] / src / multibyte / internal.h

diff --git a/src/multibyte/internal.h b/src/multibyte/internal.h
index 427519a..45bbc6d 100644 (file)
--- a/src/multibyte/internal.h
+++ b/src/multibyte/internal.h
@@ -1,61 +1,24 @@
-/* 
- * This code was written by Rich Felker in 2010; no copyright is claimed.
- * This code is in the public domain. Attribution is appreciated but
- * unnecessary.
- */
-
-#define LIBC
-#ifndef LIBC
-/* rename functions not to conflict with libc */
-#ifndef myprefix
-#define myprefix fsmu8_
-#endif
-#define concat2(a,b) a ## b
-#define concat(a,b) concat2(a,b)
-#define prefix(b) concat(myprefix,b)
-
-#undef mblen
-#undef mbrlen
-#undef mbrtowc
-#undef mbsinit
-#undef mbsnrtowcs
-#undef mbsrtowcs
-#undef wcrtomb
-#undef wcsrtombs
-#undef wcstombs
-#undef wctomb
-#define mblen prefix(mblen)
-#define mbrlen prefix(mbrlen)
-#define mbrtowc prefix(mbrtowc)
-#define mbsinit prefix(mbsinit)
-#define mbsnrtowcs prefix(mbsnrtowcs)
-#define mbsrtowcs prefix(mbsrtowcs)
-#define mbstowcs prefix(mbstowcs)
-#define wcrtomb prefix(wcrtomb)
-#define wcsnrtombs prefix(wcsnrtombs)
-#define wcsrtombs prefix(wcsrtombs)
-#define wcstombs prefix(wcstombs)
-#define wctomb prefix(wctomb)
-
-#define bittab prefix(bittab)
-#else
 #define bittab __fsmu8
-#endif
 
-extern const uint32_t bittab[];
+#include <stdint.h>
+#include <features.h>
+
+extern hidden const uint32_t bittab[];
 
 /* Upper 6 state bits are a negative integer offset to bound-check next byte */
 /*    equivalent to: ( (b-0x80) | (b+offset) ) & ~0x3f      */
 #define OOB(c,b) (((((b)>>3)-0x10)|(((b)>>3)+((int32_t)(c)>>26))) & ~7)
 
 /* Interval [a,b). Either a must be 80 or b must be c0, lower 3 bits clear. */
-#define R(a,b) ((uint32_t)((a==0x80 ? 0x40-b : -a) << 23))
+#define R(a,b) ((uint32_t)((a==0x80 ? 0x40u-b : 0u-a) << 23))
 #define FAILSTATE R(0x80,0x80)
 
-#ifdef I_FAILED_TO_RTFM_RFC3629
-#define SA 0xc2
-#define SB 0xfe
-#else
-#define SA 0xc2
-#define SB 0xf5
-#endif
+#define SA 0xc2u
+#define SB 0xf4u
+
+/* Arbitrary encoding for representing code units instead of characters. */
+#define CODEUNIT(c) (0xdfff & (signed char)(c))
+#define IS_CODEUNIT(c) ((unsigned)(c)-0xdf80 < 0x80)
+
+/* Get inline definition of MB_CUR_MAX. */
+#include "locale_impl.h"