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#include "arch/context_switching/syscall/main.hpp"
namespace teachos::arch::context_switching::syscall
{
auto syscall(type syscall_number, arguments args) -> response
{
asm volatile("mov %[input], %%rax"
: /* no output from call */
: [input] "m"(syscall_number)
: "memory");
asm volatile("mov %[input], %%rdi " : /* no output from call */ : [input] "m"(args.arg_0) : "memory");
asm volatile("mov %[input], %%rsi" : /* no output from call */ : [input] "m"(args.arg_1) : "memory");
asm volatile("mov %[input], %%rdx" : /* no output from call */ : [input] "m"(args.arg_2) : "memory");
asm volatile("mov %[input], %%r10" : /* no output from call */ : [input] "m"(args.arg_3) : "memory");
asm volatile("mov %[input], %%r8" : /* no output from call */ : [input] "m"(args.arg_4) : "memory");
asm volatile("mov %[input], %%r9" : /* no output from call */ : [input] "m"(args.arg_5) : "memory");
asm volatile("syscall");
arguments values{};
asm volatile("mov %%rdi, %[output]" : [output] "=m"(values.arg_0));
asm volatile("mov %%rsi, %[output]" : [output] "=m"(values.arg_1));
asm volatile("mov %%rdx, %[output]" : [output] "=m"(values.arg_2));
asm volatile("mov %%r10, %[output]" : [output] "=m"(values.arg_3));
asm volatile("mov %%r8, %[output]" : [output] "=m"(values.arg_4));
asm volatile("mov %%r9, %[output]" : [output] "=m"(values.arg_5));
error error_code{};
asm volatile("mov %%al, %[output]" : [output] "=m"(error_code));
return {error_code, values};
}
} // namespace teachos::arch::context_switching::syscall
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