user: implement mlibc as the libc, finally.

It's finally done..

Signed-off-by: kaguya <vpshinomiya@protonmail.com>

ext2_root/usr/include/bits/ansi/fenv.h

@@ -0,0 +1,93 @@
+#ifndef MLIBC_FENV_H
+#define MLIBC_FENV_H
+
+#if defined(__x86_64__) || defined(__i386__)
+
+#define FE_DENORMAL 2
+#define FE_DIVBYZERO 4
+#define FE_INEXACT 32
+#define FE_INVALID 1
+#define FE_OVERFLOW 8
+#define FE_UNDERFLOW 16
+
+#define FE_ALL_EXCEPT (FE_DENORMAL | FE_DIVBYZERO | FE_INEXACT | FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW)
+
+#define FE_TONEAREST 0
+#define FE_DOWNWARD 0x400
+#define FE_UPWARD 0x800
+#define FE_TOWARDZERO 0xC00
+
+#elif defined(__aarch64__)
+
+#define FE_INVALID 1
+#define FE_DIVBYZERO 2
+#define FE_OVERFLOW 4
+#define FE_UNDERFLOW 8
+#define FE_INEXACT 16
+
+#define FE_ALL_EXCEPT 31
+
+#define FE_TONEAREST 0
+#define FE_UPWARD 0x400000
+#define FE_DOWNWARD 0x800000
+#define FE_TOWARDZERO 0xC00000
+
+#elif defined(__riscv) && __riscv_xlen == 64
+
+#define FE_INEXACT 1
+#define FE_UNDERFLOW 2
+#define FE_OVERFLOW 4
+#define FE_DIVBYZERO 8
+#define FE_INVALID 16
+
+#define FE_ALL_EXCEPT 31
+
+#define FE_TONEAREST 0
+#define FE_TOWARDZERO 1
+#define FE_DOWNWARD 2
+#define FE_UPWARD 3
+
+#elif defined (__m68k__)
+
+#if __HAVE_68881__ || __mcffpu__ || __HAVE_FPU_
+
+#define FE_INEXACT    8
+#define FE_DIVBYZERO  16
+#define FE_UNDERFLOW  32
+#define FE_OVERFLOW   64
+#define FE_INVALID    128
+
+#define FE_ALL_EXCEPT 0xf8
+
+#define FE_TONEAREST  0
+#define FE_TOWARDZERO 16
+#define FE_DOWNWARD   32
+#define FE_UPWARD     48
+
+#else
+
+#define FE_ALL_EXCEPT 0
+#define FE_TONEAREST  0
+
+#endif
+
+#elif defined(__loongarch64)
+
+#define FE_INEXACT 0x010000
+#define FE_UNDERFLOW 0x020000
+#define FE_OVERFLOW 0x040000
+#define FE_DIVBYZERO 0x080000
+#define FE_INVALID 0x100000
+
+#define FE_ALL_EXCEPT (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
+
+#define FE_TONEAREST 0x000
+#define FE_TOWARDZERO 0x100
+#define FE_UPWARD 0x200
+#define FE_DOWNWARD 0x300
+
+#else
+#error Unknown architecture
+#endif
+
+#endif /* MLIBC_FENV_H */

ext2_root/usr/include/bits/ansi/time_t.h

@@ -0,0 +1,8 @@
+
+#ifndef MLIBC_TIME_T
+#define MLIBC_TIME_T
+
+typedef long time_t;
+
+#endif
+

ext2_root/usr/include/bits/ansi/timespec.h

@@ -0,0 +1,13 @@
+
+#ifndef MLIBC_TIMESPEC_H
+#define MLIBC_TIMESPEC_H
+
+#include <bits/ansi/time_t.h>
+
+struct timespec {
+	time_t tv_sec;
+	long tv_nsec;
+};
+
+#endif /* MLIBC_TIMESPEC_H */
+