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 +1,51 @@
+#ifndef _SYS_USER_H
+#define _SYS_USER_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* TODO: This assumes x86-64. */
+
+struct user_fpregs_struct {
+	uint16_t cwd, swd, ftw, fop;
+	uint64_t rip, rdp;
+	uint32_t mxcsr, mxcr_mask;
+	uint32_t st_space[32], xmm_space[64], padding[24];
+};
+
+struct user_regs_struct {
+	unsigned long r15, r14, r13, r12, rbp, rbx, r11, r10, r9, r8;
+	unsigned long rax, rcx, rdx, rsi, rdi, orig_rax, rip;
+	unsigned long cs, eflags, rsp, ss, fs_base, gs_base, ds, es, fs, gs;
+};
+
+struct user {
+	struct user_regs_struct regs;
+	int u_fpvalid;
+	struct user_fpregs_struct i387;
+	unsigned long u_tsize;
+	unsigned long u_dsize;
+	unsigned long u_ssize;
+	unsigned long start_code;
+	unsigned long start_stack;
+	long signal;
+	int reserved;
+	struct user_regs_struct	*u_ar0;
+	struct user_fpregs_struct *u_fpstate;
+	unsigned long magic;
+	char u_comm[32];
+	unsigned long u_debugreg[8];
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#define PAGE_SHIFT 12
+#define PAGE_SIZE (1UL << PAGE_SHIFT)
+#define PAGE_MASK (~(PAGE_SIZE - 1))
+
+#endif