libc: Add basic sys/param.h for programs that want it

libc/CMakeLists.txt

@@ -19,6 +19,7 @@ set(SOURCES
     src/env.cpp
     src/pwd.cpp
     src/grp.cpp
+    src/locale.cpp
     src/sys/stat.cpp
     src/sys/mman.cpp
     src/sys/wait.cpp

libc/include/bits/locale-cat.h

@@ -0,0 +1,18 @@
+/* bits/locale-cat.h: Locale categories. */
+
+#ifndef _BITS_LOCALE_CAT_H
+#define _BITS_LOCALE_CAT_H
+
+enum __libc_locale_category
+{
+    LC_ALL,      // Controls all locales.
+    LC_CTYPE,    // Character classification and case conversion.
+    LC_COLLATE,  // Collation order.
+    LC_MONETARY, // Monetary formatting.
+    LC_NUMERIC,  // Numeric, non-monetary formatting.
+    LC_TIME,     // Date and time formats.
+    LC_MESSAGES, // Formats of informative and diagnostic messages and interactive responses.
+    __num_locale_categories,
+};
+
+#endif

libc/include/locale.h

@@ -0,0 +1,20 @@
+/* locale.h: Locale category macros. */
+
+#ifndef _LOCALE_H
+#define _LOCALE_H
+
+#include <bits/locale-cat.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    // Query or set the current locale.
+    char* setlocale(int category, const char* locale);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

libc/include/stdlib.h

@@ -31,6 +31,9 @@ typedef struct
 
 #define RAND_MAX 32767
 
+#define EXIT_SUCCESS 0
+#define EXIT_FAILURE 1
+
 #ifdef __cplusplus
 extern "C"
 {
@@ -93,6 +96,9 @@ extern "C"
      * endptr if nonnull. */
     unsigned long strtoul(const char* str, char** endptr, int base);
 
+#define strtoll strtol
+#define strtoull strtoul
+
     /* Return the next pseudorandom number. */
     int rand();
 

libc/include/sys/param.h

@@ -0,0 +1,16 @@
+/* sys/param.h: Old-style BSD macros. */
+
+#ifndef _SYS_PARAM_H
+#define _SYS_PARAM_H
+
+#include <limits.h>
+
+#ifndef MIN
+#define MIN(a, b) (((a) < (b)) ? (a) : (b))
+#endif
+
+#ifndef MAX
+#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+#endif
+
+#endif

libc/src/locale.cpp

@@ -0,0 +1,12 @@
+#include <locale.h>
+
+static char s_default_locale[] = "C";
+
+extern "C"
+{
+    char* setlocale(int, const char*)
+    {
+        // FIXME: Set the current locale if <locale> is not NULL.
+        return s_default_locale;
+    }
+}