Add more sparcv8plus comments.

bmomjian · bmomjian · commit 3c5665d088f8 · 2006-05-18T01:06:28.000Z
diff --git a/src/backend/port/tas/solaris_sparc.s b/src/backend/port/tas/solaris_sparc.s
@@ -22,13 +22,13 @@ pg_atomic_cas:
 	! by a sparcv8 CPU.  gcc continues to use "ldstub" because
 	! there is no indication which sparc version it is targeting.
 	!
-	! There actually is a trick for embedding "cas" for a compiler
-	! that is targeting sparcv8:
+	! It is actually possible to use "cas" for sparcv8 binaries if 
+	! -xarch=v8plus is used for compilation.  There is actually a
+	! trick for embedding "cas" in a sparcv8-targeted compiler, but
+	! it can only be run on a sparcv8plus cpus:
 	!
 	!   http://cvs.opensolaris.org/source/xref/on/usr/src/lib/libc/sparc/threads/sparc.il
 	!
-	! It is actually possible to use "cas" for sparcv8 binaries if 
-	! -xarch=v8plus is used for compilation.
 
 #ifdef __sparcv9
 	cas     [%o0],%o2,%o1

Original file line number	Diff line number	Diff line change
`@@ -22,13 +22,13 @@ pg_atomic_cas:`
`22`	`22`	`! by a sparcv8 CPU. gcc continues to use "ldstub" because`
`23`	`23`	`! there is no indication which sparc version it is targeting.`
`24`	`24`	`!`
`25`		`- ! There actually is a trick for embedding "cas" for a compiler`
`26`		`- ! that is targeting sparcv8:`
	`25`	`+ ! It is actually possible to use "cas" for sparcv8 binaries if`
	`26`	`+ ! -xarch=v8plus is used for compilation. There is actually a`
	`27`	`+ ! trick for embedding "cas" in a sparcv8-targeted compiler, but`
	`28`	`+ ! it can only be run on a sparcv8plus cpus:`
`27`	`29`	`!`
`28`	`30`	`! http://cvs.opensolaris.org/source/xref/on/usr/src/lib/libc/sparc/threads/sparc.il`
`29`	`31`	`!`
`30`		`- ! It is actually possible to use "cas" for sparcv8 binaries if`
`31`		`- ! -xarch=v8plus is used for compilation.`
`32`	`32`
`33`	`33`	`#ifdef __sparcv9`
`34`	`34`	`cas [%o0],%o2,%o1`