diff options
| author | Michael Shalayeff <mickey@cvs.openbsd.org> | 1998-12-23 16:26:27 +0000 |
|---|---|---|
| committer | Michael Shalayeff <mickey@cvs.openbsd.org> | 1998-12-23 16:26:27 +0000 |
| commit | fe14f09a834897ee5b23805bb81a4d9a6c09883c (patch) | |
| tree | 19bbb315b2e9de7dec2c1655918cc1dd680c89b1 /lib/libc/arch/hppa | |
| parent | df35df792ccd0958dca2315d2aef540afeb20743 (diff) | |
libc_r support
Diffstat (limited to 'lib/libc/arch/hppa')
| -rw-r--r-- | lib/libc/arch/hppa/SYS.h | 49 |
1 files changed, 42 insertions, 7 deletions
diff --git a/lib/libc/arch/hppa/SYS.h b/lib/libc/arch/hppa/SYS.h index 664ae9330a6..310ada7e8b4 100644 --- a/lib/libc/arch/hppa/SYS.h +++ b/lib/libc/arch/hppa/SYS.h @@ -1,4 +1,4 @@ -/* $OpenBSD: SYS.h,v 1.1 1998/08/28 20:59:41 mickey Exp $ */ +/* $OpenBSD: SYS.h,v 1.2 1998/12/23 16:26:26 mickey Exp $ */ /* * Copyright (c) 1998 Michael Shalayeff @@ -34,23 +34,58 @@ #include <machine/asm.h> #include <machine/vmparam.h> -#define RSYSCALL(x) !\ -ENTRY(x) !\ +#define __ENTRY(p,x) ENTRY(__CONCAT(p,x)) +#define __EXIT(p,x) EXIT(__CONCAT(p,x)) + + +#define __RSYSCALL(p,x) !\ +__ENTRY(p,x) !\ stw rp, FM_ERP(sr0,sp) !\ ldil L%SYSCALLGATE, r1 !\ ble 4(sr7, r1) !\ ldi __CONCAT(SYS_,x),r22!\ or,<> r0,r22,r0 !\ ldw FM_ERP(sr0,sp),rp !\ -EXIT(x) +__EXIT(p,x) -#define PSEUDO(x,y) !\ -ENTRY(x) !\ +#define __PSEUDO(p,x,y) !\ +__ENTRY(p,x) !\ stw rp, FM_ERP(sr0,sp) !\ ldil L%SYSCALLGATE, r1 !\ ble 4(sr7, r1) !\ ldi __CONCAT(SYS_,y),r22!\ or,<> r0,r22,r0 !\ ldw FM_ERP(sr0,sp),rp !\ -EXIT(x) +__EXIT(p,x) +/* + * Design note: + * + * When the syscalls need to be renamed so they can be handled + * specially by the threaded library, these macros insert `_thread_sys_' + * in front of their name. This avoids the need to #ifdef _THREAD_SAFE + * everywhere that the renamed function needs to be called. + * The PASSTHRU macro is later used for system calls that don't need + * wrapping. (XXX its a shame the loader can't do this aliasing) + */ +#ifdef _THREAD_SAFE +/* + * For the thread_safe versions, we prepend _thread_sys_ to the function + * name so that the 'C' wrapper can go around the real name. + */ +# define SYSCALL(x) __SYSCALL(_thread_sys_,x) +# define RSYSCALL(x) __RSYSCALL(_thread_sys_,x) +# define PSEUDO(x,y) __PSEUDO(_thread_sys_,x,y) +/*# define SYSENTRY(x) __ENTRY(_thread_sys_,x)*/ +/*# define PASSTHRU(x) __PASSTHRU(_thread_sys_,x)*/ +#else _THREAD_SAFE +/* + * The non-threaded library defaults to traditional syscalls where + * the function name matches the syscall name. + */ +# define SYSCALL(x) __SYSCALL(,x) +# define RSYSCALL(x) __RSYSCALL(,x) +# define PSEUDO(x,y) __PSEUDO(,x,y) +/*# define SYSENTRY(x) __ENTRY(,x)*/ +#endif _THREAD_SAFE + .globl cerror |