modified i386_solaris port

scrappy · scrappy · commit 14cd0ca3bd20 · 1996-07-25T19:48:24.000Z
submitted by: dr. george
diff --git a/src/backend/port/i386_solaris/Makefile.inc b/src/backend/port/i386_solaris/Makefile.inc
@@ -7,14 +7,14 @@
 #
 #
 # IDENTIFICATION
-#    $Header: /cvsroot/pgsql/src/backend/port/i386_solaris/Attic/Makefile.inc,v 1.3 1996/07/25 07:27:08 scrappy Exp $
+#    $Header: /cvsroot/pgsql/src/backend/port/i386_solaris/Attic/Makefile.inc,v 1.4 1996/07/25 19:48:24 scrappy Exp $
 #
 #-------------------------------------------------------------------------
 
 CFLAGS+= -DUSE_POSIX_TIME -DNEED_ISINF -DNEED_RUSAGE -DNO_EMPTY_STMTS
 
 LDADD+= -ll -ldl
 
-SUBSRCS+= port.c 
+SUBSRCS+= port.c tas.s
 
 HEADERS+= machine.h port-protos.h rusagestub.h
diff --git a/src/backend/port/i386_solaris/tas.s b/src/backend/port/i386_solaris/tas.s
@@ -0,0 +1,35 @@
+/=============================================================================
+/ tas.s -- test and set lock for i386_solaris
+/=============================================================================
+
+        .file   "tas.s"
+        .text
+        .align  16
+.L1.text:
+
+        .globl  tas
+tas:
+        pushl   %ebp            /save prev base pointer
+        movl    %esp,%ebp       /new base pointer
+        pushl   %ebx            /save prev bx
+        movl    8(%ebp),%ebx    /load bx with address of lock
+        pushl   %ebx            /save prev bx
+        movl    8(%ebp),%ebx    /load bx with address of lock
+        movl    $255,%eax       /put something in ax
+        xchgb   %al,(%ebx)      /swap lock value with "0"
+        cmpb    $0,%al          /did we get the lock?
+        jne     .Locked
+        subl    %eax,%eax       /yes, we got it -- return 0
+        jmp     .Finish
+        .align  4
+.Locked:
+        movl    $1,%eax         /no, we didn't get it - return 1
+.Finish:
+        popl    %ebx            /restore prev bx
+        movl    %ebp,%esp       /restore stack state
+        popl    %ebp
+        ret                     /return
+        .align  4
+        .type   tas,@function
+        .size   tas,.-tas
+

Original file line number	Diff line number	Diff line change
`@@ -7,14 +7,14 @@`
`7`	`7`	`#`
`8`	`8`	`#`
`9`	`9`	`# IDENTIFICATION`
`10`		`-# $Header: /cvsroot/pgsql/src/backend/port/i386_solaris/Attic/Makefile.inc,v 1.3 1996/07/25 07:27:08 scrappy Exp $`
	`10`	`+# $Header: /cvsroot/pgsql/src/backend/port/i386_solaris/Attic/Makefile.inc,v 1.4 1996/07/25 19:48:24 scrappy Exp $`
`11`	`11`	`#`
`12`	`12`	`#-------------------------------------------------------------------------`
`13`	`13`
`14`	`14`	`CFLAGS+= -DUSE_POSIX_TIME -DNEED_ISINF -DNEED_RUSAGE -DNO_EMPTY_STMTS`
`15`	`15`
`16`	`16`	`LDADD+= -ll -ldl`
`17`	`17`
`18`		`-SUBSRCS+= port.c`
	`18`	`+SUBSRCS+= port.c tas.s`
`19`	`19`
`20`	`20`	`HEADERS+= machine.h port-protos.h rusagestub.h`