refactor headers, especially alltypes.h, and improve C++ ABI compat

the arch-specific bits/alltypes.h.sh has been replaced with a generic
alltypes.h.in and minimal arch-specific bits/alltypes.h.in.

this commit is intended to have no functional changes except:
- exposing additional symbols that POSIX allows but does not require
- changing the C++ name mangling for some types
- fixing the signedness of blksize_t on powerpc (POSIX requires signed)
- fixing the limit macros for sig_atomic_t on x86_64
- making dev_t an unsigned type (ABI matching goal, and more logical)

in addition, some types that were wrongly defined with long on 32-bit
archs were changed to int, and vice versa; this change is
non-functional except for the possibility of making pointer types
mismatch, and only affects programs that were using them incorrectly,
and only at build-time, not runtime.

the following changes were made in the interest of moving
non-arch-specific types out of the alltypes system and into the
headers they're associated with, and also will tend to improve
application compatibility:
- netdb.h now includes netinet/in.h (for socklen_t and uint32_t)
- netinet/in.h now includes sys/socket.h and inttypes.h
- sys/resource.h now includes sys/time.h (for struct timeval)
- sys/wait.h now includes signal.h (for siginfo_t)
- langinfo.h now includes nl_types.h (for nl_item)

for the types in stdint.h:
- types which are of no interest to other headers were moved out of
  the alltypes system.
- fast types for 8- and 64-bit are hard-coded (at least for now); only
  the 16- and 32-bit ones have reason to vary by arch.

and the following types have been changed for C++ ABI purposes;
- mbstate_t now has a struct tag, __mbstate_t
- FILE's struct tag has been changed to _IO_FILE
- DIR's struct tag has been changed to __dirstream
- locale_t's struct tag has been changed to __locale_struct
- pthread_t is defined as unsigned long in C++ mode only
- fpos_t now has a struct tag, _G_fpos64_t
- fsid_t's struct tag has been changed to __fsid_t
- idtype_t has been made an enum type (also required by POSIX)
- nl_catd has been changed from long to void *
- siginfo_t's struct tag has been removed
- sigset_t's has been given a struct tag, __sigset_t
- stack_t has been given a struct tag, sigaltstack
- suseconds_t has been changed to long on 32-bit archs
- [u]intptr_t have been changed from long to int rank on 32-bit archs
- dev_t has been made unsigned

summary of tests that have been performed against these changes:
- nsz's libc-test (diff -u before and after)
- C++ ABI check symbol dump (diff -u before, after, glibc)
- grepped for __NEED, made sure types needed are still in alltypes
- built gcc 3.4.6

Author: richfelker

Makefile

@@ -73,10 +73,10 @@ include/bits:
 	@test "$(ARCH)" || { echo "Please set ARCH in config.mak before running make." ; exit 1 ; }
 	ln -sf ../arch/$(ARCH)/bits $@
 
-include/bits/alltypes.h.sh: include/bits
+include/bits/alltypes.h.in: include/bits
 
-include/bits/alltypes.h: include/bits/alltypes.h.sh
-	sh $< > $@
+include/bits/alltypes.h: include/bits/alltypes.h.in include/alltypes.h.in tools/mkalltypes.sed
+	sed -f tools/mkalltypes.sed include/bits/alltypes.h.in include/alltypes.h.in > $@
 
 src/ldso/dynlink.lo: arch/$(ARCH)/reloc.h
 

arch/arm/bits/alltypes.h.in

@@ -0,0 +1,22 @@
+#define _Addr int
+#define _Int64 long long
+
+TYPEDEF __builtin_va_list va_list;
+TYPEDEF __builtin_va_list __isoc_va_list;
+
+#ifndef __cplusplus
+TYPEDEF unsigned wchar_t;
+#endif
+TYPEDEF int wint_t;
+
+TYPEDEF float float_t;
+TYPEDEF double double_t;
+
+TYPEDEF long time_t;
+TYPEDEF long suseconds_t;
+
+TYPEDEF struct { union { int __i[9]; unsigned __s[9]; } __u; } pthread_attr_t;
+TYPEDEF struct { union { int __i[6]; void *__p[6]; } __u; } pthread_mutex_t;
+TYPEDEF struct { union { int __i[12]; void *__p[12]; } __u; } pthread_cond_t;
+TYPEDEF struct { union { int __i[8]; void *__p[8]; } __u; } pthread_rwlock_t;
+TYPEDEF struct { union { int __i[5]; void *__p[5]; } __u; } pthread_barrier_t;

arch/arm/bits/alltypes.h.sh

@@ -1,17 +1,16 @@
-#define INT_FAST8_MIN   INT8_MIN
+typedef int32_t int_fast16_t;
+typedef int32_t int_fast32_t;
+typedef uint32_t uint_fast16_t;
+typedef uint32_t uint_fast32_t;
+
 #define INT_FAST16_MIN  INT32_MIN
 #define INT_FAST32_MIN  INT32_MIN
-#define INT_FAST64_MIN  INT64_MIN
 
-#define INT_FAST8_MAX   INT8_MAX
 #define INT_FAST16_MAX  INT32_MAX
 #define INT_FAST32_MAX  INT32_MAX
-#define INT_FAST64_MAX  INT64_MAX
 
-#define UINT_FAST8_MAX  UINT8_MAX
 #define UINT_FAST16_MAX UINT32_MAX
 #define UINT_FAST32_MAX UINT32_MAX
-#define UINT_FAST64_MAX UINT64_MAX
 
 #define INTPTR_MIN      INT32_MIN
 #define INTPTR_MAX      INT32_MAX

arch/arm/bits/stdint.h

@@ -0,0 +1,36 @@
+#define _Addr int
+#define _Int64 long long
+
+#if __GNUC__ >= 3
+TYPEDEF __builtin_va_list va_list;
+TYPEDEF __builtin_va_list __isoc_va_list;
+#else
+TYPEDEF struct __va_list * va_list;
+TYPEDEF struct __va_list * __isoc_va_list;
+#endif
+
+#ifndef __cplusplus
+#ifdef __WCHAR_TYPE__
+TYPEDEF __WCHAR_TYPE__ wchar_t;
+#else
+TYPEDEF long wchar_t;
+#endif
+#endif
+TYPEDEF long wint_t;
+
+#if defined(__FLT_EVAL_METHOD__) && __FLT_EVAL_METHOD__ == 0
+TYPEDEF float float_t;
+TYPEDEF double double_t;
+#else
+TYPEDEF long double float_t;
+TYPEDEF long double double_t;
+#endif
+
+TYPEDEF long time_t;
+TYPEDEF long suseconds_t;
+
+TYPEDEF struct { union { int __i[9]; unsigned __s[9]; } __u; } pthread_attr_t;
+TYPEDEF struct { union { int __i[6]; void *__p[6]; } __u; } pthread_mutex_t;
+TYPEDEF struct { union { int __i[12]; void *__p[12]; } __u; } pthread_cond_t;
+TYPEDEF struct { union { int __i[8]; void *__p[8]; } __u; } pthread_rwlock_t;
+TYPEDEF struct { union { int __i[5]; void *__p[5]; } __u; } pthread_barrier_t;

arch/i386/bits/alltypes.h.in

@@ -1,23 +1,20 @@
-#define INT_FAST8_MIN   INT8_MIN
+typedef int32_t int_fast16_t;
+typedef int32_t int_fast32_t;
+typedef uint32_t uint_fast16_t;
+typedef uint32_t uint_fast32_t;
+
 #define INT_FAST16_MIN  INT32_MIN
 #define INT_FAST32_MIN  INT32_MIN
-#define INT_FAST64_MIN  INT64_MIN
 
-#define INT_FAST8_MAX   INT8_MAX
 #define INT_FAST16_MAX  INT32_MAX
 #define INT_FAST32_MAX  INT32_MAX
-#define INT_FAST64_MAX  INT64_MAX
 
-#define UINT_FAST8_MAX  UINT8_MAX
 #define UINT_FAST16_MAX UINT32_MAX
 #define UINT_FAST32_MAX UINT32_MAX
-#define UINT_FAST64_MAX UINT64_MAX
 
 #define INTPTR_MIN      INT32_MIN
 #define INTPTR_MAX      INT32_MAX
 #define UINTPTR_MAX     UINT32_MAX
 #define PTRDIFF_MIN     INT32_MIN
 #define PTRDIFF_MAX     INT32_MAX
-#define SIG_ATOMIC_MIN  INT32_MIN
-#define SIG_ATOMIC_MAX  INT32_MAX
 #define SIZE_MAX        UINT32_MAX