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add inline_syscall to syscall with 2 param #1202

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Merged
merged 2 commits into from
Oct 21, 2025
Merged

add inline_syscall to syscall with 2 param #1202

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f0e017f
add inline_syscall to syscall with 2 param
SekaiArendelle Oct 18, 2025
84c81f1
remove redundant sys/syscall.h
SekaiArendelle Oct 20, 2025
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18 changes: 18 additions & 0 deletions include/fast_io_hosted/platforms/linux/aarch64.h
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Original file line number Diff line number Diff line change
@@ -1,5 +1,9 @@
#pragma once

#include <cstddef>
#include <cstdint>
#include <concepts>

namespace fast_io
{

Expand All @@ -24,6 +28,7 @@ inline return_value_type system_call(auto p1) noexcept
}

template <::std::uint_least64_t syscall_number>
[[noreturn]]
inline void system_call_no_return(auto p1) noexcept
{
register ::std::uint_least64_t x8 __asm__("x8") = syscall_number;
Expand All @@ -43,6 +48,18 @@ inline return_value_type system_call(auto p1, auto p2) noexcept
return static_cast<return_value_type>(x0);
}

template <::std::uint_least64_t syscall_number, ::std::signed_integral return_value_type>
requires(1 < sizeof(return_value_type))
[[__gnu__::__always_inline__]]
inline return_value_type inline_syscall(auto p1, auto p2) noexcept
{
register ::std::uint_least64_t x8 __asm__("x8") = syscall_number;
register ::std::uint_least64_t x0 __asm__("x0") = (::std::uint_least64_t)p1;
register ::std::uint_least64_t x1 __asm__("x1") = (::std::uint_least64_t)p2;
__asm__ __volatile__("svc 0" : "=r"(x0) : "r"(x8), "0"(x0), "r"(x1) : "memory", "cc");
return static_cast<return_value_type>(x0);
}

template <::std::uint_least64_t syscall_number, ::std::signed_integral return_value_type>
requires(1 < sizeof(return_value_type))
inline return_value_type system_call(auto p1, auto p2, auto p3) noexcept
Expand Down Expand Up @@ -101,6 +118,7 @@ inline return_value_type system_call(auto p1, auto p2, auto p3, auto p4, auto p5
}

template <::std::integral I>
[[noreturn]]
inline void fast_exit(I ret) noexcept
{
system_call_no_return<__NR_exit>(ret);
Expand Down
20 changes: 20 additions & 0 deletions include/fast_io_hosted/platforms/linux/amd64.h
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Original file line number Diff line number Diff line change
@@ -1,6 +1,10 @@
#pragma once
// https://github.com/bminor/glibc/master/sysdeps/unix/sysv/linux/x86_64/sysdep.h

#include <cstddef>
#include <cstdint>
#include <concepts>

namespace fast_io
{

Expand Down Expand Up @@ -31,6 +35,7 @@ inline return_value_type system_call(auto p1) noexcept
}

template <::std::uint_least64_t syscall_number>
[[noreturn]]
inline void system_call_no_return(auto p1) noexcept
{
::std::uint_least64_t ret;
Expand All @@ -55,6 +60,20 @@ inline return_value_type system_call(auto p1, auto p2) noexcept
return ret;
}

template <::std::uint_least64_t syscall_number, ::std::signed_integral return_value_type>
requires(1 < sizeof(return_value_type))
[[__gnu__::__always_inline__]]
inline return_value_type inline_syscall(auto p1, auto p2) noexcept
{
return_value_type ret;
__asm__ __volatile__("syscall"
: "=a"(ret)
// EDI RSI RDX
: "0"(syscall_number), "D"(p1), "S"(p2)
: "memory", "cc", "r11", "cx");
return ret;
}

template <::std::uint_least64_t syscall_number, ::std::signed_integral return_value_type>
requires(1 < sizeof(return_value_type))
inline return_value_type system_call(auto p1, auto p2, auto p3) noexcept
Expand Down Expand Up @@ -114,6 +133,7 @@ inline return_value_type system_call(auto p1, auto p2, auto p3, auto p4, auto p5
}

template <::std::integral I>
[[noreturn]]
inline void fast_exit(I ret) noexcept
{
system_call_no_return<__NR_exit>(ret);
Expand Down
14 changes: 14 additions & 0 deletions include/fast_io_hosted/platforms/linux/generic.h
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Original file line number Diff line number Diff line change
@@ -1,4 +1,8 @@
#pragma once

#include <cstddef>
#include <cstdint>
#include <concepts>
#include <unistd.h>
#include <sys/syscall.h>

Expand All @@ -13,14 +17,24 @@ inline return_value_type system_call(Args... args) noexcept
return static_cast<return_value_type>(ret);
}

template <::std::uint_least64_t syscall_number, ::std::signed_integral return_value_type>
requires(1 < sizeof(return_value_type))
[[__gnu__::__always_inline__]]
inline return_value_type inline_syscall(auto p1, auto p2) noexcept
{
static_assert(false, "force inline for generic syscall is not supported");
}

template <::std::size_t syscall_number>
[[noreturn]]
inline void system_call_no_return(auto p1) noexcept
{
::syscall(syscall_number, p1);
__builtin_unreachable();
}

template <::std::integral I>
[[noreturn]]
inline void fast_exit(I ret) noexcept
{
system_call_no_return<__NR_exit>(ret);
Expand Down
21 changes: 20 additions & 1 deletion include/fast_io_hosted/platforms/linux/loongarch64.h
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,10 @@ glibc loongarch
loongarch syscall is very similar to riscv. but it is using syscall instruction like x86_64
*/

#include <cstddef>
#include <cstdint>
#include <concepts>

namespace fast_io
{

Expand All @@ -31,13 +35,14 @@ inline return_value_type system_call(auto p1) noexcept
}

template <::std::uint_least64_t syscall_number>
[[noreturn]]
inline void system_call_no_return(auto p1) noexcept
{
register ::std::uint_least64_t a7 __asm__("$a7") = syscall_number;
register ::std::uint_least64_t a0 __asm__("$a0") = (::std::uint_least64_t)p1;
__asm__ __volatile__("syscall 0" : "+r"(a0) : "r"(a7) : "$t0", "$t1", "$t2", "$t3", "$t4",
"$t5", "$t6", "$t7", "$t8", "memory");
__builtin_unreachable();
__builtin_unreachable();
}

template <::std::uint_least64_t syscall_number, ::std::signed_integral return_value_type>
Expand All @@ -52,6 +57,19 @@ inline return_value_type system_call(auto p1, auto p2) noexcept
return static_cast<return_value_type>(a0);
}

template <::std::uint_least64_t syscall_number, ::std::signed_integral return_value_type>
requires(1 < sizeof(return_value_type))
[[__gnu__::__always_inline__]]
inline return_value_type inline_syscall(auto p1, auto p2) noexcept
{
register ::std::uint_least64_t a7 __asm__("$a7") = syscall_number;
register ::std::uint_least64_t a0 __asm__("$a0") = (::std::uint_least64_t)p1;
register ::std::uint_least64_t a1 __asm__("$a1") = (::std::uint_least64_t)p2;
__asm__ __volatile__("syscall 0" : "+r"(a0) : "r"(a7), "r"(a1) : "$t0", "$t1", "$t2", "$t3", "$t4",
"$t5", "$t6", "$t7", "$t8", "memory");
return static_cast<return_value_type>(a0);
}

template <::std::uint_least64_t syscall_number, ::std::signed_integral return_value_type>
requires(1 < sizeof(return_value_type))
inline return_value_type system_call(auto p1, auto p2, auto p3) noexcept
Expand Down Expand Up @@ -111,6 +129,7 @@ inline return_value_type system_call(auto p1, auto p2, auto p3, auto p4, auto p5
}

template <::std::integral I>
[[noreturn]]
inline void fast_exit(I ret) noexcept
{
system_call_no_return<__NR_exit>(ret);
Expand Down
18 changes: 18 additions & 0 deletions include/fast_io_hosted/platforms/linux/riscv64.h
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,10 @@
Do we need to deal with big endian with extra code???
*/

#include <cstddef>
#include <cstdint>
#include <concepts>

namespace fast_io
{

Expand All @@ -29,6 +33,7 @@ inline return_value_type system_call(auto p1) noexcept
}

template <::std::uint_least64_t syscall_number>
[[noreturn]]
inline void system_call_no_return(auto p1) noexcept
{
register ::std::uint_least64_t a7 __asm__("a7") = syscall_number;
Expand All @@ -48,6 +53,18 @@ inline return_value_type system_call(auto p1, auto p2) noexcept
return static_cast<return_value_type>(a0);
}

template <::std::uint_least64_t syscall_number, ::std::signed_integral return_value_type>
requires(1 < sizeof(return_value_type))
[[__gnu__::__always_inline__]]
inline return_value_type inline_syscall(auto p1, auto p2) noexcept
{
register ::std::uint_least64_t a7 __asm__("a7") = syscall_number;
register ::std::uint_least64_t a0 __asm__("a0") = (::std::uint_least64_t)p1;
register ::std::uint_least64_t a1 __asm__("a1") = (::std::uint_least64_t)p2;
__asm__ __volatile__("ecall" : "+r"(a0) : "r"(a7), "r"(a1) : "memory");
return static_cast<return_value_type>(a0);
}

template <::std::uint_least64_t syscall_number, ::std::signed_integral return_value_type>
requires(1 < sizeof(return_value_type))
inline return_value_type system_call(auto p1, auto p2, auto p3) noexcept
Expand Down Expand Up @@ -103,6 +120,7 @@ inline return_value_type system_call(auto p1, auto p2, auto p3, auto p4, auto p5
}

template <::std::integral I>
[[noreturn]]
inline void fast_exit(I ret) noexcept
{
system_call_no_return<__NR_exit>(ret);
Expand Down