#ifndef _BITS_SYSCALLS_H #define _BITS_SYSCALLS_H #ifndef _SYSCALL_H # error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead." #endif /* This includes the `__NR_<name>' syscall numbers taken from the Linux kernel * header files. It also defines the traditional `SYS_<name>' macros for older * programs. */ #include <bits/sysnum.h> #ifndef __set_errno # define __set_errno(val) (*__errno_location ()) = (val) #endif #ifndef SYS_ify # define SYS_ify(syscall_name) (__NR_##syscall_name) #endif #ifndef __ASSEMBLER__ #define __SYSCALL_CLOBBERS "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", \ "$14", "$15", "$24", "$25", "memory" #define _syscall0(type,name) \ type name(void) \ { \ long err; \ long sys_result; \ { \ register unsigned long __v0 asm("$2"); \ register unsigned long __a3 asm("$7"); \ __asm__ volatile ( \ ".set noreorder\n\t" \ "li $2, %2 # " #name "\n\t" \ "syscall\n\t" \ ".set reorder" \ : "=r" (__v0), "=r" (__a3) \ : "i" (SYS_ify(name)) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ sys_result = __v0; \ } \ if (err == 0) \ return (type) sys_result; \ __set_errno(sys_result); \ return (type)-1; \ } #define _syscall1(type,name,atype,a) \ type name(atype a) \ { \ long err; \ long sys_result; \ { \ register unsigned long __v0 asm("$2"); \ register unsigned long __a0 asm("$4") = (unsigned long) a; \ register unsigned long __a3 asm("$7"); \ __asm__ volatile ( \ ".set noreorder\n\t" \ "li $2, %3\t\t\t# " #name "\n\t" \ "syscall\n\t" \ ".set reorder" \ : "=r" (__v0), "=r" (__a3) \ : "r" (__a0), "i" (SYS_ify(name)) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ sys_result = __v0; \ } \ if (err == 0) \ return (type) sys_result; \ __set_errno(sys_result); \ return (type)-1; \ } #define _syscall2(type,name,atype,a,btype,b) \ type name(atype a,btype b) \ { \ long err; \ long sys_result; \ { \ register unsigned long __v0 asm("$2"); \ register unsigned long __a0 asm("$4") = (unsigned long) a; \ register unsigned long __a1 asm("$5") = (unsigned long) b; \ register unsigned long __a3 asm("$7"); \ __asm__ volatile ( \ ".set noreorder\n\t" \ "li $2, %4\t\t\t# " #name "\n\t" \ "syscall\n\t" \ ".set reorder" \ : "=r" (__v0), "=r" (__a3) \ : "r" (__a0), "r" (__a1), "i" (SYS_ify(name)) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ sys_result = __v0; \ } \ if (err == 0) \ return (type) sys_result; \ __set_errno(sys_result); \ return (type)-1; \ } #define _syscall3(type,name,atype,a,btype,b,ctype,c) \ type name (atype a, btype b, ctype c) \ { \ long err; \ long sys_result; \ { \ register unsigned long __v0 asm("$2"); \ register unsigned long __a0 asm("$4") = (unsigned long) a; \ register unsigned long __a1 asm("$5") = (unsigned long) b; \ register unsigned long __a2 asm("$6") = (unsigned long) c; \ register unsigned long __a3 asm("$7"); \ __asm__ volatile ( \ ".set noreorder\n\t" \ "li $2, %5\t\t\t# " #name "\n\t" \ "syscall\n\t" \ ".set reorder" \ : "=r" (__v0), "=r" (__a3) \ : "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ sys_result = __v0; \ } \ if (err == 0) \ return (type) sys_result; \ __set_errno(sys_result); \ return (type)-1; \ } #define _syscall4(type,name,atype,a,btype,b,ctype,c,dtype,d) \ type name (atype a, btype b, ctype c, dtype d) \ { \ long err; \ long sys_result; \ { \ register unsigned long __v0 asm("$2"); \ register unsigned long __a0 asm("$4") = (unsigned long) a; \ register unsigned long __a1 asm("$5") = (unsigned long) b; \ register unsigned long __a2 asm("$6") = (unsigned long) c; \ register unsigned long __a3 asm("$7") = (unsigned long) d; \ __asm__ volatile ( \ ".set noreorder\n\t" \ "li $2, %5\t\t\t# " #name "\n\t" \ "syscall\n\t" \ ".set reorder" \ : "=r" (__v0), "+r" (__a3) \ : "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ sys_result = __v0; \ } \ if (err == 0) \ return (type) sys_result; \ __set_errno(sys_result); \ return (type)-1; \ } #define _syscall5(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e) \ type name (atype a,btype b,ctype c,dtype d,etype e) \ { \ long err; \ long sys_result; \ const unsigned long *constE = (void*)(unsigned long) e; \ { \ register unsigned long __v0 asm("$2"); \ register unsigned long __a0 asm("$4") = (unsigned long) a; \ register unsigned long __a1 asm("$5") = (unsigned long) b; \ register unsigned long __a2 asm("$6") = (unsigned long) c; \ register unsigned long __a3 asm("$7") = (unsigned long) d; \ __asm__ volatile ( \ ".set noreorder\n\t" \ "lw $2, %6\n\t" \ "subu $29, 32\n\t" \ "sw $2, 16($29)\n\t" \ "li $2, %5\t\t\t# " #name "\n\t" \ "syscall\n\t" \ "addiu $29, 32\n\t" \ ".set reorder" \ : "=r" (__v0), "+r" (__a3) \ : "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)), \ "m" (constE) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ sys_result = __v0; \ } \ if (err == 0) \ return (type) sys_result; \ __set_errno(sys_result); \ return (type)-1; \ } #define _syscall6(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e,ftype,f) \ type name (atype a,btype b,ctype c,dtype d,etype e,ftype f) \ { \ long err; \ long sys_result; \ const unsigned long *constE = (void*)(unsigned long) e; \ const unsigned long *constF = (void*)(unsigned long) f; \ { \ register unsigned long __v0 asm("$2"); \ register unsigned long __a0 asm("$4") = (unsigned long) a; \ register unsigned long __a1 asm("$5") = (unsigned long) b; \ register unsigned long __a2 asm("$6") = (unsigned long) c; \ register unsigned long __a3 asm("$7") = (unsigned long) d; \ __asm__ volatile ( \ ".set noreorder\n\t" \ "lw $2, %6\n\t" \ "lw $8, %7\n\t" \ "subu $29, 32\n\t" \ "sw $2, 16($29)\n\t" \ "sw $8, 20($29)\n\t" \ "li $2, %5\t\t\t# " #name "\n\t" \ "syscall\n\t" \ "addiu $29, 32\n\t" \ ".set reorder" \ : "=r" (__v0), "+r" (__a3) \ : "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)), \ "m" (constE), "m" (constF) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ sys_result = __v0; \ } \ if (err == 0) \ return (type) sys_result; \ __set_errno(sys_result); \ return (type)-1; \ } #define _syscall7(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e,ftype,f,gtype,g) \ type name (atype a,btype b,ctype c,dtype d,etype e,ftype f,gtype g) \ { \ long err; \ long sys_result; \ const unsigned long *constE = (void*)(unsigned long) e; \ const unsigned long *constF = (void*)(unsigned long) f; \ const unsigned long *constG = (void*)(unsigned long) g; \ { \ register unsigned long __v0 asm("$2"); \ register unsigned long __a0 asm("$4") = (unsigned long) a; \ register unsigned long __a1 asm("$5") = (unsigned long) b; \ register unsigned long __a2 asm("$6") = (unsigned long) c; \ register unsigned long __a3 asm("$7") = (unsigned long) d; \ __asm__ volatile ( \ ".set noreorder\n\t" \ "lw $2, %6\n\t" \ "lw $8, %7\n\t" \ "lw $9, %8\n\t" \ "subu $29, 32\n\t" \ "sw $2, 16($29)\n\t" \ "sw $8, 20($29)\n\t" \ "sw $9, 24($29)\n\t" \ "li $2, %5\t\t\t# " #name "\n\t" \ "syscall\n\t" \ "addiu $29, 32\n\t" \ ".set reorder" \ : "=r" (__v0), "+r" (__a3) \ : "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)), \ "m" (constE), "m" (constF), "m" (constG) \ : __SYSCALL_CLOBBERS); \ err = __a3; \ sys_result = __v0; \ } \ if (err == 0) \ return (type) sys_result; \ __set_errno(sys_result); \ return (type)-1; \ } #endif /* __ASSEMBLER__ */ #endif /* _BITS_SYSCALLS_H */