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syscall: allow userspace to call new system calls

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Matheus
2023-06-26 23:19:18 -03:00
parent a193516bbf
commit 0bb9ed191a
2 changed files with 37 additions and 5 deletions
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kernel-src/arch/x86-64/syscall.asm
+9 -1
View File
@@ -16,6 +16,10 @@ extern syscall_exit
extern syscall_waitpid
extern syscall_munmap
extern syscall_getdents
extern syscall_dup
extern syscall_dup2
extern syscall_dup3
extern syscall_fcntl
syscalltab:
dq syscall_print
dq syscall_mmap
@@ -34,7 +38,11 @@ dq syscall_exit
dq syscall_waitpid
dq syscall_munmap
dq syscall_getdents
syscallcount equ 17
dq syscall_dup
dq syscall_dup2
dq syscall_dup3
dq syscall_fcntl
syscallcount equ 21
section .text
global arch_syscall_entry
; on entry:
patches/mlibc/jinx-working-patch.patch
+28 -4
View File
@@ -133,10 +133,10 @@ index 0000000..e5b087a
+
diff --git mlibc-workdir/sysdeps/astral/generic/generic.cpp mlibc-workdir/sysdeps/astral/generic/generic.cpp
new file mode 100644
index 0000000..c177a55
index 0000000..74b6be1
--- /dev/null
+++ mlibc-workdir/sysdeps/astral/generic/generic.cpp
@@ -0,0 +1,206 @@
@@ -0,0 +1,226 @@
+#include <bits/ensure.h>
+#include <mlibc/debug.hpp>
+#include <mlibc/all-sysdeps.hpp>
@@ -192,6 +192,26 @@ index 0000000..c177a55
+ return 0;
+ }
+
+ int sys_fcntl(int fd, int request, va_list args, int *result) {
+ long arg = va_arg(args, uint64_t);
+ long ret;
+ long err = syscall(SYSCALL_FCNTL, &ret, fd, request, arg);
+ *result = ret;
+ return err;
+ }
+
+ int sys_dup(int fd, int flags, int *newfd) {
+ long ret;
+ long err = syscall(SYSCALL_DUP, &ret, fd);
+ *newfd = ret;
+ return err;
+ }
+
+ int sys_dup2(int fd, int flags, int newfd) {
+ long ret;
+ return syscall(SYSCALL_DUP2, &ret, fd, newfd);
+ }
+
+ int sys_read_entries(int handle, void *buffer, size_t max_size, size_t *bytes_read) {
+ long ret;
+ long err = syscall(SYSCALL_GETDENTS, &ret, handle, (uint64_t)buffer, max_size);
@@ -362,10 +382,10 @@ index 0000000..990eca0
+#endif
diff --git mlibc-workdir/sysdeps/astral/include/astral/syscall.h mlibc-workdir/sysdeps/astral/include/astral/syscall.h
new file mode 100644
index 0000000..6b0e993
index 0000000..f884f36
--- /dev/null
+++ mlibc-workdir/sysdeps/astral/include/astral/syscall.h
@@ -0,0 +1,40 @@
@@ -0,0 +1,44 @@
+#ifndef _SYSCALL_H_INCLUDE
+#define _SYSCALL_H_INCLUDE
+
@@ -386,6 +406,10 @@ index 0000000..6b0e993
+#define SYSCALL_WAITPID 14
+#define SYSCALL_MUNMAP 15
+#define SYSCALL_GETDENTS 16
+#define SYSCALL_DUP 17
+#define SYSCALL_DUP2 18
+#define SYSCALL_DUP3 19
+#define SYSCALL_FCNTL 20
+
+#include <stddef.h>
+#include <stdint.h>