From ca55abf319c2f815cb2c84655b25482829c1646d Mon Sep 17 00:00:00 2001
From: deischen <deischen@FreeBSD.org>
Date: Mon, 29 Jan 2001 03:23:46 +0000
Subject: Clean up syscall generation in libc by removing HIDDEN_SYSCALLS and
 treating (almost) all system calls the same way:

	__sys_foo - actual syscall
	foo, _foo - weak definitions to __sys_foo

Change PSEUDO syscalls (currently only _exit and _getlogin) to
be __sys_foo (T) and _foo (W).

Add $FreeBSD$ to a few files to satisfy commitprep.

Suggested by:	bde
---
 lib/libc/amd64/SYS.h            | 37 ++++++-------------------------------
 lib/libc/amd64/sys/Makefile.inc |  6 +-----
 lib/libc/amd64/sys/pipe.S       |  2 +-
 lib/libc/amd64/sys/sigreturn.S  |  2 +-
 4 files changed, 9 insertions(+), 38 deletions(-)

(limited to 'lib/libc/amd64')

diff --git a/lib/libc/amd64/SYS.h b/lib/libc/amd64/SYS.h
index 2d58562..ba56bce 100644
--- a/lib/libc/amd64/SYS.h
+++ b/lib/libc/amd64/SYS.h
@@ -42,32 +42,6 @@
 #include "DEFS.h"
 
 #define	SYSCALL(x)	2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror));	\
-			ENTRY(__CONCAT(_,x));				\
-			.weak CNAME(x);					\
-			.set CNAME(x),CNAME(__CONCAT(_,x));		\
-			lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b
-
-#define	RSYSCALL(x)	SYSCALL(x); ret
-
-#define	PSEUDO(x,y)	ENTRY(__CONCAT(_,x));				\
-			.weak CNAME(x);					\
-			.set CNAME(x),CNAME(__CONCAT(_,x));		\
-			lea __CONCAT(SYS_,y), %eax; KERNCALL; ret
-
-/* gas messes up offset -- although we don't currently need it, do for BCS */
-#define	LCALL(x,y)	.byte 0x9a ; .long y; .word x
-
-/*
- * Design note:
- *
- * The macros PSYSCALL() and PRSYSCALL() are intended for use where a
- * syscall needs to be renamed in the threaded library.
- */
-/*
- * For the thread_safe versions, we prepend __sys_ to the function
- * name so that the 'C' wrapper can go around the real name.
- */
-#define	PSYSCALL(x)	2: PIC_PROLOGUE; jmp PIC_PLT(HIDENAME(cerror));	\
 			ENTRY(__CONCAT(__sys_,x));			\
 			.weak CNAME(x);					\
 			.set CNAME(x),CNAME(__CONCAT(__sys_,x));	\
@@ -75,14 +49,15 @@
 			.set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \
 			lea __CONCAT(SYS_,x),%eax; KERNCALL; jb 2b
 
-#define	PRSYSCALL(x)	PSYSCALL(x); ret
+#define	RSYSCALL(x)	SYSCALL(x); ret
 
-#define	PPSEUDO(x,y)	ENTRY(__CONCAT(__sys_,x));			\
-			.weak CNAME(x);					\
-			.set CNAME(x),CNAME(__CONCAT(__sys_,x));	\
+#define	PSEUDO(x)	ENTRY(__CONCAT(__sys_,x));			\
 			.weak CNAME(__CONCAT(_,x));			\
 			.set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)); \
-			lea __CONCAT(SYS_,y), %eax; KERNCALL; ret
+			lea __CONCAT(SYS_,x), %eax; KERNCALL; ret
+
+/* gas messes up offset -- although we don't currently need it, do for BCS */
+#define	LCALL(x,y)	.byte 0x9a ; .long y; .word x
 
 #ifdef __ELF__
 #define KERNCALL	int $0x80	/* Faster */
diff --git a/lib/libc/amd64/sys/Makefile.inc b/lib/libc/amd64/sys/Makefile.inc
index 4a60875..98d9deb 100644
--- a/lib/libc/amd64/sys/Makefile.inc
+++ b/lib/libc/amd64/sys/Makefile.inc
@@ -14,11 +14,7 @@ NOASM=	__semctl.o break.o exit.o ftruncate.o getdomainname.o getlogin.o \
 	semop.o setdomainname.o shmat.o shmctl.o shmdt.o shmget.o sstk.o \
 	truncate.o uname.o vfork.o yield.o
 
-PSEUDO=	_getlogin.o
-
-# Pseudo syscalls that are renamed as __sys_{pseudo} so that libc_r can
-# override them with replacements.
-PSEUDOR=	_exit.o
+PSEUDO=	_getlogin.o _exit.o
 
 .if ${LIB} == "c"
 MAN2+=	i386_get_ioperm.2 i386_get_ldt.2 i386_vm86.2
diff --git a/lib/libc/amd64/sys/pipe.S b/lib/libc/amd64/sys/pipe.S
index 1684611..fca1187 100644
--- a/lib/libc/amd64/sys/pipe.S
+++ b/lib/libc/amd64/sys/pipe.S
@@ -43,7 +43,7 @@
 
 #include "SYS.h"
 
-PSYSCALL(pipe)
+SYSCALL(pipe)
 	movl	4(%esp),%ecx
 	movl	%eax,(%ecx)
 	movl	%edx,4(%ecx)
diff --git a/lib/libc/amd64/sys/sigreturn.S b/lib/libc/amd64/sys/sigreturn.S
index 7405c34..449149f 100644
--- a/lib/libc/amd64/sys/sigreturn.S
+++ b/lib/libc/amd64/sys/sigreturn.S
@@ -48,5 +48,5 @@
  * must be saved.   On FreeBSD, this is not the case.
  */
 
-PSYSCALL(sigreturn)
+SYSCALL(sigreturn)
 	ret
-- 
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