user: implement mlibc as the libc, finally.

It's finally done.. Signed-off-by: kaguya <vpshinomiya@protonmail.com>
2026-05-02 03:31:49 -04:00
parent 2fa39ad85a
commit 9a9b91c940
2387 changed files with 152741 additions and 315 deletions
@@ -0,0 +1,177 @@
+#ifndef _ABIBITS_SIGNAL_H
+#define _ABIBITS_SIGNAL_H
+
+#include <abi-bits/pid_t.h>
+#include <abi-bits/sigevent.h>
+#include <abi-bits/uid_t.h>
+#include <bits/size_t.h>
+
+typedef struct {
+	int si_signo;
+	int si_code;
+	int si_errno;
+	pid_t si_pid;
+	uid_t si_uid;
+	void *si_addr;
+	int si_status;
+	union sigval si_value;
+} siginfo_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Argument for signal() */
+typedef void (*__sighandler) (int);
+
+#define SIG_ERR ((__sighandler)(void *)(-1))
+#define SIG_DFL ((__sighandler)(void *)(-2))
+#define SIG_IGN ((__sighandler)(void *)(-3))
+
+#define SIGHUP     1
+#define SIGINT     2
+#define SIGQUIT    3
+#define SIGCONT    4
+#define SIGBUS     5
+#define SIGABRT    6
+#define SIGCHLD    7
+#define SIGFPE     8
+#define SIGKILL    9
+#define SIGILL    10
+#define SIGPIPE   11
+#define SIGSEGV   12
+#define SIGSTOP   13
+#define SIGALRM   14
+#define SIGTERM   15
+#define SIGTSTP   16
+#define SIGTTIN   17
+#define SIGTTOU   18
+#define SIGUSR1   19
+#define SIGUSR2   20
+#define SIGIO     21
+#define SIGPOLL   SIGIO
+#define SIGPROF   22
+#define SIGSYS    23
+#define SIGCANCEL SIGSYS
+#define SIGTRAP   24
+#define SIGURG    25
+#define SIGVTALRM 26
+#define SIGXCPU   27
+#define SIGXFSZ   28
+#define SIGWINCH  29
+#define SIGPWR    30
+
+/* siginfo->si_info constants */
+/* SIGBUS */
+#define BUS_ADRALN 1
+#define BUS_ADRERR 2
+#define BUS_OBJERR 3
+
+/* SIGILL */
+#define ILL_ILLOPC 1
+#define ILL_ILLOPN 2
+#define ILL_ILLADR 3
+#define ILL_ILLTRP 4
+#define ILL_PRVOPC 5
+#define ILL_PRVREG 6
+#define ILL_COPROC 7
+#define ILL_BADSTK 8
+#define ILL_BADIADDR 9
+
+/* SIGSEGV */
+#define SEGV_MAPERR 1
+#define SEGV_ACCERR 2
+
+/* TODO: replace this by uint64_t */
+typedef long sigset_t;
+
+#define SIGUNUSED SIGSYS
+
+/* constants for sigprocmask() */
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+#define SA_NOCLDSTOP (1 << 0)
+#define SA_ONSTACK (1 << 1)
+#define SA_RESETHAND (1 << 2)
+#define SA_RESTART (1 << 3)
+#define SA_SIGINFO (1 << 4)
+#define SA_NOCLDWAIT (1 << 5)
+#define SA_NODEFER (1 << 6)
+
+#define MINSIGSTKSZ 2048
+#define SIGSTKSZ 8192
+#define SS_ONSTACK 1
+#define SS_DISABLE 2
+
+typedef struct __stack {
+        void *ss_sp;
+        size_t ss_size;
+        int ss_flags;
+} stack_t;
+
+/* constants for sigev_notify of struct sigevent */
+#define SIGEV_NONE 1
+#define SIGEV_SIGNAL 2
+#define SIGEV_THREAD 3
+
+#define SI_ASYNCNL (-60)
+#define SI_TKILL (-6)
+#define SI_SIGIO (-5)
+#define SI_ASYNCIO (-4)
+#define SI_MESGQ (-3)
+#define SI_TIMER (-2)
+#define SI_QUEUE (-1)
+#define SI_USER 0
+#define SI_KERNEL 128
+
+#define NSIG 65
+#define _NSIG NSIG
+
+#define CLD_EXITED 1
+#define CLD_KILLED 2
+#define CLD_DUMPED 3
+#define CLD_TRAPPED 4
+#define CLD_STOPPED 5
+#define CLD_CONTINUED 6
+
+struct sigaction {
+	union {
+		void (*sa_handler)(int);
+		void (*sa_sigaction)(int, siginfo_t *, void *);
+	};
+	void (*sa_restorer)(void);
+	sigset_t sa_mask;
+	int sa_flags;
+};
+
+#if defined(__x86_64__) || defined(__aarch64__) || (defined(__riscv) && __riscv_xlen == 64)
+/* TODO: This is wrong for AArch64. */
+
+typedef struct {
+	unsigned long oldmask;
+	unsigned long gregs[16];
+	unsigned long pc, pr, sr;
+	unsigned long gbr, mach, macl;
+	unsigned long fpregs[16];
+	unsigned long xfpregs[16];
+	unsigned int fpscr, fpul, ownedfp;
+} mcontext_t;
+
+typedef struct __ucontext {
+	struct __ucontext *uc_link;
+	stack_t uc_stack;
+	mcontext_t uc_mcontext;
+	sigset_t uc_sigmask;
+} ucontext_t;
+
+#else
+#error "Missing architecture specific code."
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _ABIBITS_SIGNAL_H */