From c975de1534f4b4092ad75f85353eec32a9a31b92 Mon Sep 17 00:00:00 2001
From: Boris Gjenero <dreamlayers@rockbox.org>
Date: Mon, 22 Oct 2012 21:30:01 +0200
Subject: SH gcc 4.6.3 with link-time optimization, for Archos targets

This is work from FS#12431 synced to current HEAD and slightly
tweaked (gcc 4.6.2 -> 4.6.3, binutils 2.21.1 -> 2.22)

Change-Id: I76af91e80ac2a9c16a776c7f0a33cc51603bbf9b
---
 firmware/target/sh/adc-sh.c              |  2 +-
 firmware/target/sh/archos/audio-archos.c |  8 ++++----
 firmware/target/sh/archos/timer-archos.c |  2 +-
 firmware/target/sh/kernel-sh.c           |  2 +-
 firmware/target/sh/system-sh.c           | 11 ++++++++---
 5 files changed, 15 insertions(+), 10 deletions(-)

(limited to 'firmware/target')

diff --git a/firmware/target/sh/adc-sh.c b/firmware/target/sh/adc-sh.c
index 2e6d6407b8..17f829ad97 100644
--- a/firmware/target/sh/adc-sh.c
+++ b/firmware/target/sh/adc-sh.c
@@ -59,7 +59,7 @@ static void adc_tick(void)
     ADCSR = ADCSR_ADST | ADCSR_ADIE | ADCSR_SCAN | 3;
 }
 
-void ADITI(void) __attribute__((interrupt_handler));
+void ADITI(void) __attribute__((interrupt_handler)) USED_ATTR;
 void ADITI(void)
 {
     if(ADCSR & ADCSR_ADF)
diff --git a/firmware/target/sh/archos/audio-archos.c b/firmware/target/sh/archos/audio-archos.c
index 2c2579bec5..207f26f250 100644
--- a/firmware/target/sh/archos/audio-archos.c
+++ b/firmware/target/sh/archos/audio-archos.c
@@ -153,7 +153,7 @@ static void play_tick(void)
     }
 }
 
-void DEI3(void) __attribute__((interrupt_handler));
+void DEI3(void) __attribute__((interrupt_handler)) USED_ATTR;
 void DEI3(void)
 {
     const void* start;
@@ -177,7 +177,7 @@ void DEI3(void)
     CHCR3 &= ~0x0002; /* Clear DMA interrupt */
 }
 
-void IMIA1(void) __attribute__((interrupt_handler));
+void IMIA1(void) __attribute__((interrupt_handler)) USED_ATTR;
 void IMIA1(void) /* Timer 1 interrupt */
 {
     if(playing)
@@ -189,14 +189,14 @@ void IMIA1(void) /* Timer 1 interrupt */
 #endif
 }
 
-void IRQ6(void) __attribute__((interrupt_handler));
+void IRQ6(void) __attribute__((interrupt_handler)) USED_ATTR;
 void IRQ6(void) /* PB14: MAS stop demand IRQ */
 {
     SCR0 &= ~0x80;
 }
 
 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
-void IRQ3(void) __attribute__((interrupt_handler));
+void IRQ3(void) __attribute__((interrupt_handler)) USED_ATTR;
 void IRQ3(void) /* PA15: MAS demand IRQ */
 {
     /* Begin with setting the IRQ to edge sensitive */
diff --git a/firmware/target/sh/archos/timer-archos.c b/firmware/target/sh/archos/timer-archos.c
index 98a3afb4b6..251d68638a 100644
--- a/firmware/target/sh/archos/timer-archos.c
+++ b/firmware/target/sh/archos/timer-archos.c
@@ -23,7 +23,7 @@
 #include "system.h"
 #include "timer.h"
 
-void IMIA4(void) __attribute__((interrupt_handler));
+void IMIA4(void) __attribute__((interrupt_handler)) USED_ATTR;
 void IMIA4(void)
 {
     if (pfn_timer != NULL)
diff --git a/firmware/target/sh/kernel-sh.c b/firmware/target/sh/kernel-sh.c
index 65b27e47f0..d4cfaaa724 100644
--- a/firmware/target/sh/kernel-sh.c
+++ b/firmware/target/sh/kernel-sh.c
@@ -55,7 +55,7 @@ void tick_start(unsigned int interval_in_ms)
     TSTR |= 0x01; /* Start timer 1 */
 }
 
-void IMIA0(void) __attribute__ ((interrupt_handler));
+void IMIA0(void) __attribute__ ((interrupt_handler)) USED_ATTR;
 void IMIA0(void)
 {
     /* Run through the list of tick tasks */
diff --git a/firmware/target/sh/system-sh.c b/firmware/target/sh/system-sh.c
index e054801b57..921d08f7b4 100644
--- a/firmware/target/sh/system-sh.c
+++ b/firmware/target/sh/system-sh.c
@@ -180,6 +180,7 @@ asm (
  * Must go into the same section as the UIE() handler */
 
     "\t.text\n"
+    ".global\t_UIE4\n"
     "_UIE4:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n"
     "_UIE5:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n"
     "_UIE6:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n"
@@ -286,13 +287,17 @@ asm (
     "_UIE107:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n"
     "_UIE108:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n"
     "_UIE109:\tbsr\t_UIE\n\tmov.l\t@r15+,r4\n"
-
+    "_UIE:\tmov.l\t__UIE_k,r0\n"
+    "jmp\t@r0\n"
+    "nop\n"
+    ".align\t4\n"
+    "__UIE_k:\t.long\t__UIE\n"
 );
 
 extern void UIE4(void); /* needed for calculating the UIE number */
 
-void UIE (unsigned int pc) __attribute__((section(".text")));
-void UIE (unsigned int pc) /* Unexpected Interrupt or Exception */
+void _UIE (unsigned int pc) __attribute__((section(".text"))) USED_ATTR;
+void _UIE (unsigned int pc) /* Unexpected Interrupt or Exception */
 {
     unsigned int n;
 
-- 
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