From 65aa1698d3bb704f9fa6cb33bfd96ed99beb0156 Mon Sep 17 00:00:00 2001 From: phcoder Date: Mon, 19 Oct 2009 12:58:52 +0200 Subject: [PATCH] use $t9 instead of $ra as a base register --- kern/mips/startup.S | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/kern/mips/startup.S b/kern/mips/startup.S index fca319e22..afab3642e 100644 --- a/kern/mips/startup.S +++ b/kern/mips/startup.S @@ -42,13 +42,14 @@ kernel_image_size: .long 0 codestart: /* Decompress the payload. */ - addiu $t2, $ra, GRUB_KERNEL_CPU_RAW_SIZE - BASE_ADDR + move $t9, $ra + addiu $t2, $t9, GRUB_KERNEL_CPU_RAW_SIZE - BASE_ADDR lui $t1, %hi(compressed) addiu $t1, %lo(compressed) - lw $t3, (GRUB_KERNEL_CPU_COMPRESSED_SIZE - BASE_ADDR)($ra) + lw $t3, (GRUB_KERNEL_CPU_COMPRESSED_SIZE - BASE_ADDR)($t9) /* $t2 contains source compressed address, $t1 is destination, - $t3 is compressed size. FIXME: put LZMA here. Don't clober $ra + $t3 is compressed size. FIXME: put LZMA here. Don't clober $t9 */ reloccont: lb $t4, 0($t2) @@ -61,7 +62,7 @@ reloccont: /* Move the modules out of BSS. */ lui $t1, %hi(_start) addiu $t1, %lo(_start) - lw $t2, (GRUB_KERNEL_CPU_KERNEL_IMAGE_SIZE - BASE_ADDR)($ra) + lw $t2, (GRUB_KERNEL_CPU_KERNEL_IMAGE_SIZE - BASE_ADDR)($t9) addu $t2, $t1, $t2 lui $t1, %hi(_end) @@ -73,7 +74,7 @@ reloccont: /* Pass modules address as first argument. */ // move $a0, $t1 - lw $t3, (GRUB_KERNEL_CPU_TOTAL_MODULE_SIZE - BASE_ADDR)($ra) + lw $t3, (GRUB_KERNEL_CPU_TOTAL_MODULE_SIZE - BASE_ADDR)($t9) /* Backward copy. */ add $t1, $t1, $t3