From: Ahmad Sharif <asharif@google.com>
Date: Thu, 8 Nov 2012 23:14:44 +0000 (-0800)
Subject: ads2gas.pl: convert push/pop and whole keywords.
X-Git-Tag: v1.2.0~30
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7ebcaeb0fa;p=libvpx

ads2gas.pl: convert push/pop and whole keywords.

This change converts push to stmdb and pop to ldmia. In addition word boundaries
are obeyed using \b avoiding substituion where not appropriate.

Patch provided by ihf@chromium.org.

TEST=Used on many Daisy assembly files.
BUG=None.

Change-Id: Ie5b197b158edd0467294551d0b640c8db6530d95
---

diff --git a/build/make/ads2gas.pl b/build/make/ads2gas.pl
index ba70242dc..95be467ab 100755
--- a/build/make/ads2gas.pl
+++ b/build/make/ads2gas.pl
@@ -61,26 +61,26 @@ while (<STDIN>)
     s/:SHR:/ >> /g;
 
     # Convert ELSE to .else
-    s/ELSE/.else/g;
+    s/\bELSE\b/.else/g;
 
     # Convert ENDIF to .endif
-    s/ENDIF/.endif/g;
+    s/\bENDIF\b/.endif/g;
 
     # Convert ELSEIF to .elseif
-    s/ELSEIF/.elseif/g;
+    s/\bELSEIF\b/.elseif/g;
 
     # Convert LTORG to .ltorg
-    s/LTORG/.ltorg/g;
+    s/\bLTORG\b/.ltorg/g;
 
     # Convert endfunc to nothing.
-    s/endfunc//ig;
+    s/\bendfunc\b//ig;
 
     # Convert FUNCTION to nothing.
-    s/FUNCTION//g;
-    s/function//g;
+    s/\bFUNCTION\b//g;
+    s/\bfunction\b//g;
 
-    s/ENTRY//g;
-    s/MSARMASM/0/g;
+    s/\bENTRY\b//g;
+    s/\bMSARMASM\b/0/g;
     s/^\s+end\s+$//g;
 
     # Convert IF :DEF:to .if
@@ -149,11 +149,15 @@ while (<STDIN>)
     s/^([a-zA-Z_0-9\$]+)/$1:/ if !/EQU/;
 
     # ALIGN directive
-    s/ALIGN/.balign/g;
+    s/\bALIGN\b/.balign/g;
 
     # ARM code
     s/\sARM/.arm/g;
 
+    # push/pop
+    s/(push\s+)(r\d+)/stmdb sp\!, \{$2\}/g;
+    s/(pop\s+)(r\d+)/ldmia sp\!, \{$2\}/g;
+
     # NEON code
     s/(vld1.\d+\s+)(q\d+)/$1\{$2\}/g;
     s/(vtbl.\d+\s+[^,]+),([^,]+)/$1,\{$2\}/g;
@@ -189,7 +193,7 @@ while (<STDIN>)
     s/(\S+\s+)EQU(\s+\S+)/.equ $1, $2/;
 
     # Begin macro definition
-    if (/MACRO/) {
+    if (/\bMACRO\b/) {
         $_ = <STDIN>;
         s/^/.macro/;
         s/\$//g;                # remove formal param reference
@@ -198,7 +202,7 @@ while (<STDIN>)
 
     # For macros, use \ to reference formal params
     s/\$/\\/g;                  # End macro definition
-    s/MEND/.endm/;              # No need to tell it where to stop assembling
+    s/\bMEND\b/.endm/;              # No need to tell it where to stop assembling
     next if /^\s*END\s*$/;
     print;
     print "$comment_sub$comment\n" if defined $comment;