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243 lines
6.2 KiB
C++
243 lines
6.2 KiB
C++
/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
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This file is part of LibMaxsi.
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LibMaxsi is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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LibMaxsi is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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more details.
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You should have received a copy of the GNU Lesser General Public License
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along with LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
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syscall.h
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Assembly stubs for declaring system calls in libmaxsi.
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******************************************************************************/
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#ifndef LIBMAXSI_SYSCALL_H
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#define LIBMAXSI_SYSCALL_H
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namespace Maxsi
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{
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#ifdef SORTIX_KERNEL
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#warning ===
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#warning ===
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#warning ===
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#warning ===
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#warning ===
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#warning Sortix does not support syscalls from within the kernel, building this part of LibMaxsi should not be needed, and should not be used in kernel mode
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#warning ===
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#warning ===
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#warning ===
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#warning ===
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#warning ===
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#endif
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#define DECL_SYSCALL0(type,fn) type fn();
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#define DECL_SYSCALL1(type,fn,p1) type fn(p1);
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#define DECL_SYSCALL2(type,fn,p1,p2) type fn(p1,p2);
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#define DECL_SYSCALL3(type,fn,p1,p2,p3) type fn(p1,p2,p3);
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#define DECL_SYSCALL4(type,fn,p1,p2,p3,p4) type fn(p1,p2,p3,p4);
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#define DECL_SYSCALL5(type,fn,p1,p2,p3,p4,p5) type fn(p1,p2,p3,p4,p5);
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#ifdef PLATFORM_X86
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#define DEFN_SYSCALL0(type, fn, num) \
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inline type fn() \
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{ \
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type a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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return a; \
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}
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#define DEFN_SYSCALL1(type, fn, num, P1) \
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inline type fn(P1 p1) \
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{ \
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type a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((size_t)p1)); \
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return a; \
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}
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#define DEFN_SYSCALL2(type, fn, num, P1, P2) \
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inline type fn(P1 p1, P2 p2) \
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{ \
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type a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((size_t)p1), "c" ((size_t)p2)); \
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return a; \
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}
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#define DEFN_SYSCALL3(type, fn, num, P1, P2, P3) \
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inline type fn(P1 p1, P2 p2, P3 p3) \
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{ \
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type a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((size_t)p1), "c" ((size_t)p2), "d" ((size_t)p3)); \
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return a; \
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}
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#define DEFN_SYSCALL4(type, fn, num, P1, P2, P3, P4) \
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inline type fn(P1 p1, P2 p2, P3 p3, P4 p4) \
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{ \
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type a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((size_t)p1), "c" ((size_t)p2), "d" ((size_t)p3), "D" ((size_t)p4)); \
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return a; \
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}
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#define DEFN_SYSCALL5(type, fn, num, P1, P2, P3, P4, P5) \
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inline type fn(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) \
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{ \
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type a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((size_t)p1), "c" ((size_t)p2), "d" ((size_t)p3), "D" ((size_t)p4), "S" ((size_t)p5)); \
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return a; \
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}
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#define DEFN_SYSCALL0_VOID(fn, num) \
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inline void fn() \
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{ \
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size_t a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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}
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#define DEFN_SYSCALL1_VOID(fn, num, P1) \
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inline void fn(P1 p1) \
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{ \
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size_t a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((size_t)p1)); \
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}
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#define DEFN_SYSCALL2_VOID(fn, num, P1, P2) \
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inline void fn(P1 p1, P2 p2) \
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{ \
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size_t a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((size_t)p1), "c" ((size_t)p2)); \
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}
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#define DEFN_SYSCALL3_VOID(fn, num, P1, P2, P3) \
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inline void fn(P1 p1, P2 p2, P3 p3) \
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{ \
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size_t a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((size_t)p1), "c" ((size_t)p2), "d" ((size_t)p3)); \
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}
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#define DEFN_SYSCALL4_VOID(fn, num, P1, P2, P3, P4) \
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inline void fn(P1 p1, P2 p2, P3 p3, P4 p4) \
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{ \
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size_t a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((size_t)p1), "c" ((size_t)p2), "d" ((size_t)p3), "D" ((size_t)p4)); \
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}
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#define DEFN_SYSCALL5_VOID(fn, num, P1, P2, P3, P4, P5) \
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inline void fn(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) \
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{ \
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size_t a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num), "b" ((size_t)p1), "c" ((size_t)p2), "d" ((size_t)p3), "D" ((size_t)p4), "S" ((size_t)p5)); \
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}
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#else
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// TODO: Make these inline - though that requires a move advanced inline
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// assembly stub to force parameters into the right registers.
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#define DEFN_SYSCALL0(type, fn, num) \
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type fn() \
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{ \
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type a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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return a; \
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}
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#define DEFN_SYSCALL1(type, fn, num, P1) \
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type fn(P1 p1) \
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{ \
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type a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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return a; \
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}
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#define DEFN_SYSCALL2(type, fn, num, P1, P2) \
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type fn(P1 p1, P2 p2) \
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{ \
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type a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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return a; \
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}
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#define DEFN_SYSCALL3(type, fn, num, P1, P2, P3) \
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type fn(P1 p1, P2 p2, P3 p3) \
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{ \
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type a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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return a; \
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}
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#define DEFN_SYSCALL4(type, fn, num, P1, P2, P3, P4) \
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type fn(P1 p1, P2 p2, P3 p3, P4 p4) \
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{ \
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type a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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return a; \
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}
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#define DEFN_SYSCALL5(type, fn, num, P1, P2, P3, P4, P5) \
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type fn(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) \
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{ \
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type a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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return a; \
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}
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#define DEFN_SYSCALL0_VOID(fn, num) \
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void fn() \
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{ \
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size_t a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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}
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#define DEFN_SYSCALL1_VOID(fn, num, P1) \
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void fn(P1 p1) \
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{ \
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size_t a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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}
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#define DEFN_SYSCALL2_VOID(fn, num, P1, P2) \
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void fn(P1 p1, P2 p2) \
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{ \
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size_t a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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}
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#define DEFN_SYSCALL3_VOID(fn, num, P1, P2, P3) \
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void fn(P1 p1, P2 p2, P3 p3) \
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{ \
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size_t a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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}
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#define DEFN_SYSCALL4_VOID(fn, num, P1, P2, P3, P4) \
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void fn(P1 p1, P2 p2, P3 p3, P4 p4) \
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{ \
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size_t a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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}
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#define DEFN_SYSCALL5_VOID(fn, num, P1, P2, P3, P4, P5) \
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void fn(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) \
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{ \
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size_t a; \
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asm volatile("int $0x80" : "=a" (a) : "0" (num)); \
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}
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#endif
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}
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#endif
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