All kinds of stuff

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 108 insertions, 3 deletions

diff --git a/common.h b/common.h
index b9b7174..446f438 100644
--- a/common.h
+++ b/common.h
@@ -1,23 +1,68 @@
 /* See LICENSE file for copyright and license details. */
 #ifdef REQUIRE_FLEXABLE_OR_NPARAMS
-# if defined(__clang__) || defined(__GNUC__)
+# if defined(__clang__)
 #  define LIBSYSCALLS_FLEXABLE_OR_NPARAMS_
+#  pragma clang diagnostic ignored "-Wgnu-flexible-array-initializer"
+# elif defined(__GNUC__)
+#  define LIBSYSCALLS_FLEXABLE_OR_NPARAMS_
+#  pragma GCC diagnostic ignored "-Wpedantic"
 # else
 #  define LIBSYSCALLS_FLEXABLE_OR_NPARAMS_ NPARAMS
 #  warning Setting LIBSYSCALLS_FLEXABLE_OR_NPARAMS_ to NPARAMS as it is not known that the compiler supports static allocation of structs with flexible arrays
 # endif
 #endif
+#ifdef REQUIRE_FLEXABLE_OR_NFIELDS
+# if defined(__clang__)
+#  define LIBSYSCALLS_FLEXABLE_OR_NFIELDS_
+#  pragma clang diagnostic ignored "-Wgnu-flexible-array-initializer"
+# elif defined(__GNUC__)
+#  define LIBSYSCALLS_FLEXABLE_OR_NFIELDS_
+#  pragma GCC diagnostic ignored "-Wpedantic"
+# else
+#  define LIBSYSCALLS_FLEXABLE_OR_NFIELDS_ NFIELDS
+#  warning Setting LIBSYSCALLS_FLEXABLE_OR_NFIELDS_ to NFIELDS as it is not known that the compiler supports static allocation of structs with flexible arrays
+# endif
+#endif
 #include "libsyscalls.h"
 
+#include <stdalign.h>
 #include <stddef.h>
 #include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+#if defined(__clang__)
+/* We expect the user to use -Weverything */
+# pragma clang diagnostic ignored "-Wimplicit-fallthrough" /* we use GCC's fall though comments */
+# pragma clang diagnostic ignored "-Wcovered-switch-default" /* the user may input something invalid due to version differences */
+# pragma clang diagnostic ignored "-Wc++98-compat" /* don't care about C++, especially not for internal code */
+# pragma clang diagnostic ignored "-Wgnu-zero-variadic-macro-arguments" /* TODO how does that make sense in C23? */
+# pragma clang diagnostic ignored "-Wunsafe-buffer-usage" /* clang doesn't know what it is doing */
+# pragma clang diagnostic ignored "-Wvla" /* we prefer VLA over alloca (easier to support), and we are careful */
+#elif defined(__GNUC__)
+/* We expect the user to use -Wall -Wextra mand maybe some other flags */
+# pragma GCC diagnostic ignored "-Wnonnull-compare" /* why should I trust that the user is using the same compiler? */
+# pragma GCC diagnostic ignored "-Winline" /* it's just a preference, up to the compiler to decide */
+#endif
 
-#define COMMA ,
+
+#if defined(__GNUC__)
+# define PURE_FUNCTION __attribute__((__pure__))
+#else
+# define PURE_FUNCTION
+#endif
 
 
+#define COMMA ,
+
 #define MISALIGNMENT(ADDR, ALIGN) (((ADDR) - ((ADDR) % (uintptr_t)(ALIGN))) % (uintptr_t)(ALIGN))
 #define ALIGN_BUF(BUF, ALIGN) (&(BUF)[(size_t)MISALIGNMENT((uintptr_t)(char *)(BUF), (ALIGN))])
 #define ELEMSOF(ARR) (sizeof(ARR) / sizeof *(ARR))
+#define MAX(A, B) ((A) > (B) ? (A) : (B))
+#define LOWEST_BIT(X) ((X) & ~((X) - 1))
+#define POST_HIGHEST_OF_CONSECUTIVELY_BITS(X) ((X) + LOWEST_BIT(X))
 
 
 struct libsyscalls_symbol_printer_data {
@@ -26,6 +71,61 @@ struct libsyscalls_symbol_printer_data {
 	char buf[];
 };
 
+enum endian {
+	Big,
+	Little
+};
+
+
+#define LIST_ARCH_SPECS(X, D) /*             byte  intptr  size_t  endian    sign  */\
+	X(LIBSYSCALLS_ARCH_ALPHA_LE,         8,    64,     64,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_ALPHA_BE,         8,    64,     64,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_AMD64,            8,    64,     64,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_AMD64_X32,        8,    32,     32,     Little,   TWOS_COMPLEMENT) D\
+	/*
+	X(LIBSYSCALLS_ARCH_ARM_OABI_LE,      8,    TODO,   TODO,   Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_ARM_OABI_BE,      8,    TODO,   TODO,   Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_ARM_EABI_LE,      8,    TODO,   TODO,   Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_ARM_EABI_BE,      8,    TODO,   TODO,   Big,      TWOS_COMPLEMENT) D\
+	*/\
+	X(LIBSYSCALLS_ARCH_IA64_LE,          8,    64,     64,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_IA64_BE,          8,    64,     64,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_IA64_P32_LE,      8,    32,     32,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_IA64_P32_BE,      8,    32,     32,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_M68K,             8,    32,     32,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_MICROBLAZE_32_LE, 8,    32,     32,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_MICROBLAZE_32_BE, 8,    32,     32,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_MICROBLAZE_64_LE, 8,    64,     64,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_MICROBLAZE_64_BE, 8,    64,     64,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_MIPS_O32_LE,      8,    32,     32,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_MIPS_O32_BE,      8,    32,     32,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_MIPS_N32_LE,      8,    32,     32,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_MIPS_N32_BE,      8,    32,     32,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_MIPS_N64_LE,      8,    64,     64,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_MIPS_N64_BE,      8,    64,     64,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_PARISC_32,        8,    32,     32,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_PARISC_64,        8,    64,     64,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_POWERPC_32_LE,    8,    32,     32,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_POWERPC_32_BE,    8,    32,     32,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_POWERPC_64_LE,    8,    64,     64,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_POWERPC_64_BE,    8,    64,     64,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_POWERPC_NOSPU_LE, 8,    64,     64,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_POWERPC_NOSPU_BE, 8,    64,     64,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_POWERPC_SPU_LE,   8,    64,     64,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_POWERPC_SPU_BE,   8,    64,     64,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_S390_32,          8,    32,     32,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_S390_64,          8,    64,     64,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_SH_LE,            8,    32,     32,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_SH_BE,            8,    32,     32,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_SPARC_32,         8,    32,     32,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_SPARC_64_LE,      8,    64,     64,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_SPARC_64_BE,      8,    64,     64,     Big,      TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_I386,             8,    32,     32,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_XTENSA_LE,        8,    32,     32,     Little,   TWOS_COMPLEMENT) D\
+	X(LIBSYSCALLS_ARCH_XTENSA_BE,        8,    32,     32,     Big,      TWOS_COMPLEMENT)
+	/* Don't forget to update SUPPORTED_ARCHES in Makefile */
+	/* TODO (alignment) means that it is missing in libsyscalls_get_integer_alignment.c and must also be added thither */
+
 
 #include "generated/oses.h"
 #include "generated/arches.h"
@@ -47,9 +147,14 @@ LIST_OSES(X,)
 #endif
 
 
+#define COUNT_LIST_(...) 1
+#define COUNT_LIST(LIST_MACRO) (LIST_MACRO(COUNT_LIST_,, +,))
+
+#define COUNT_ARGS(...) (0 __VA_OPT__(+ COUNT_ARGS_1(__VA_ARGS__)))
 #define COUNT_ARG_PAIRS(...) (0 __VA_OPT__(+ COUNT_ARG_PAIRS_1(__VA_ARGS__)))
 
-/* mk/generate.mk reads these two lines, do not format them as multiline macros! */
+/* mk/generate.mk reads these three lines, do not format them as multiline macros! */
+#define COUNT_ARGS_1(x, ...) 1 __VA_OPT__(+ COUNT_ARGS_2(__VA_ARGS__))
 #define COUNT_ARG_PAIRS_1(x1, x2, ...) 1 __VA_OPT__(+ COUNT_ARG_PAIRS_2(__VA_ARGS__))
 #define PARAMS_BUILD_TYPES_1(x, A, ...) LIBSYSCALLS_TYPE_##A __VA_OPT__(, PARAMS_BUILD_TYPES_2(__VA_ARGS__))