Files
KirkOS/user/include/mlibc/sysdeps/linux/x86_64/arch-syscall.cpp
T
kaguya 9a9b91c940 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

79 lines
2.0 KiB
C++

#include <sys/syscall.h>
#include <bits/syscall.h>
using sc_word_t = __sc_word_t;
sc_word_t __do_syscall0(long sc) {
sc_word_t ret;
asm volatile ("syscall" : "=a"(ret)
: "a"(sc)
: "rcx", "r11", "memory");
return ret;
}
sc_word_t __do_syscall1(long sc,
sc_word_t arg1) {
sc_word_t ret;
asm volatile ("syscall" : "=a"(ret)
: "a"(sc), "D"(arg1)
: "rcx", "r11", "memory");
return ret;
}
sc_word_t __do_syscall2(long sc,
sc_word_t arg1, sc_word_t arg2) {
sc_word_t ret;
asm volatile ("syscall" : "=a"(ret)
: "a"(sc), "D"(arg1), "S"(arg2)
: "rcx", "r11", "memory");
return ret;
}
sc_word_t __do_syscall3(long sc,
sc_word_t arg1, sc_word_t arg2, sc_word_t arg3) {
sc_word_t ret;
asm volatile ("syscall" : "=a"(ret)
: "a"(sc), "D"(arg1), "S"(arg2), "d"(arg3)
: "rcx", "r11", "memory");
return ret;
}
sc_word_t __do_syscall4(long sc,
sc_word_t arg1, sc_word_t arg2, sc_word_t arg3,
sc_word_t arg4) {
sc_word_t ret;
register sc_word_t arg4_reg asm("r10") = arg4;
asm volatile ("syscall" : "=a"(ret)
: "a"(sc), "D"(arg1), "S"(arg2), "d"(arg3),
"r"(arg4_reg)
: "rcx", "r11", "memory");
return ret;
}
sc_word_t __do_syscall5(long sc,
sc_word_t arg1, sc_word_t arg2, sc_word_t arg3,
sc_word_t arg4, sc_word_t arg5) {
sc_word_t ret;
register sc_word_t arg4_reg asm("r10") = arg4;
register sc_word_t arg5_reg asm("r8") = arg5;
asm volatile ("syscall" : "=a"(ret)
: "a"(sc), "D"(arg1), "S"(arg2), "d"(arg3),
"r"(arg4_reg), "r"(arg5_reg)
: "rcx", "r11", "memory");
return ret;
}
sc_word_t __do_syscall6(long sc,
sc_word_t arg1, sc_word_t arg2, sc_word_t arg3,
sc_word_t arg4, sc_word_t arg5, sc_word_t arg6) {
sc_word_t ret;
register sc_word_t arg4_reg asm("r10") = arg4;
register sc_word_t arg5_reg asm("r8") = arg5;
register sc_word_t arg6_reg asm("r9") = arg6;
asm volatile ("syscall" : "=a"(ret)
: "a"(sc), "D"(arg1), "S"(arg2), "d"(arg3),
"r"(arg4_reg), "r"(arg5_reg), "r"(arg6_reg)
: "rcx", "r11", "memory");
return ret;
}