From: Anatoly Sokolov <aesok@post.ru>
Date: Thu, 17 Jan 2008 20:52:27 +0000 (+0300)
Subject: avr.h (LINK_SPEC): Support -mrelax and -mpmem-wrap-around.
X-Git-Tag: releases/gcc-4.3.0~565
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2e152e16873f3774cbaf228cfdba670b18af51a0;p=thirdparty%2Fgcc.git

avr.h (LINK_SPEC): Support -mrelax and -mpmem-wrap-around.

	* config/avr/avr.h (LINK_SPEC): Support -mrelax and -mpmem-wrap-around.
	* config/avr/avr.opt (mrelax, mpmem-wrap-around): Add.

From-SVN: r131609
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c7e5849c0052..d00143afc385 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2008-01-17  Anatoly Sokolov <aesok@post.ru>
+
+	* config/avr/avr.h (LINK_SPEC): Support -mrelax and -mpmem-wrap-around.
+	* config/avr/avr.opt (mrelax, mpmem-wrap-around): Add.
+
 2008-01-17  Seongbae Park  <seongbae.park@gmail.com>
 
 	PR rtl-optimization/34400
diff --git a/gcc/config/avr/avr.h b/gcc/config/avr/avr.h
index bbabaef7372a..6b4b372c27c0 100644
--- a/gcc/config/avr/avr.h
+++ b/gcc/config/avr/avr.h
@@ -737,12 +737,21 @@ extern int avr_case_values_threshold;
 #define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;mmcu=avr35:-mmcu=avr3;\
 mmcu=*:-mmcu=%*}"
 
-#define LINK_SPEC " %{!mmcu*:-m avr2}\
+#define LINK_SPEC "\
+%{mrelax:--relax\
+         %{mpmem-wrap-around:%{mmcu=at90usb8*:--pmem-wrap-around=8k}\
+                             %{mmcu=atmega16*:--pmem-wrap-around=16k}\
+                             %{mmcu=atmega32*|\
+                               mmcu=at90can32*:--pmem-wrap-around=32k}\
+                             %{mmcu=atmega64*|\
+                               mmcu=at90can64*|\
+                               mmcu=at90usb64*:--pmem-wrap-around=64k}}}\
+%{!mmcu*: -m avr2}\
 %{mmcu=at90s1200|\
   mmcu=attiny11|\
   mmcu=attiny12|\
   mmcu=attiny15|\
-  mmcu=attiny28:-m avr1}\
+  mmcu=attiny28: -m avr1}\
 %{mmcu=attiny22|\
   mmcu=attiny26|\
   mmcu=at90s2*|\
@@ -756,19 +765,19 @@ mmcu=*:-mmcu=%*}"
   mmcu=attiny25|\
   mmcu=attiny261|\
   mmcu=attiny4*|\
-  mmcu=attiny8*:-m avr2}\
+  mmcu=attiny8*: -m avr2}\
 %{mmcu=atmega103|\
   mmcu=at43*|\
   mmcu=at76*|\
   mmcu=at90usb82|\
-  mmcu=at90usb162:-m avr3}\
+  mmcu=at90usb162: -m avr3}\
 %{mmcu=atmega8*|\
   mmcu=atmega48*|\
   mmcu=at90pwm1|\
   mmcu=at90pwm2|\
   mmcu=at90pwm2b|\
   mmcu=at90pwm3|\
-  mmcu=at90pwm3b:-m avr4}\
+  mmcu=at90pwm3b: -m avr4}\
 %{mmcu=atmega16*|\
   mmcu=atmega32*|\
   mmcu=atmega406|\
@@ -779,7 +788,7 @@ mmcu=*:-mmcu=%*}"
   mmcu=at90pwm316|\
   mmcu=at90usb64*|\
   mmcu=at90usb128*|\
-  mmcu=at94k:-m avr5}\
+  mmcu=at94k: -m avr5}\
 %{mmcu=atmega324*|\
   mmcu=atmega325*|\
   mmcu=atmega328p|\
diff --git a/gcc/config/avr/avr.opt b/gcc/config/avr/avr.opt
index 56d7db99f965..52382d75b2f3 100644
--- a/gcc/config/avr/avr.opt
+++ b/gcc/config/avr/avr.opt
@@ -58,3 +58,11 @@ Output instruction sizes to the asm file
 mtiny-stack
 Target Report Mask(TINY_STACK)
 Change only the low 8 bits of the stack pointer
+
+mrelax
+Target Report
+Relax branches
+
+mpmem-wrap-around
+Target Report
+Make the linker relaxation machine assume that a program counter wrap-around occures.