- call crt stuff correctly

git-svn-id: http://moon:8086/svn/mips@111 a8ebac50-d88d-4704-bea3-6648445a41b3

src/libsys/kernel.S

@@ -1,10 +1,13 @@
 #include <regdef.h>
 #include <xcpt_asm.h>
 
-		.section .exc_vect
+		.text
+		.section .exc_vect, "ax"
+		.align	2
 _xcpt_vector_tbl:
-		.fill	16, 4, 0		
+		la k0, _xcpt_handler
-			
+		jr k0
+		nop
 		.text
 
 LEAF(_xcpt_handler)

src/libsys/startup.S

@@ -1,3 +1,4 @@
+#include <regdef.h>
 		.file	"startup.S"
 	
 		.section .rodata
@@ -6,19 +7,27 @@ argv0:		.asciz		"\"This-MIPS-program\""
 argv:		.word		argv0	
 
 		.text
-		.section .init, "ax"
+		.section .start, "ax"
-		.extern board_init
+		.extern _init
-		.extern _exc_vect_start
+		.extern _bss_zero
-		.extern _xcpt_handler
 		.align	2
-_start:
 		.set	noreorder
 
-		# Set stack pointer 
+_start:
-		la $sp, stack_ptr
+		la sp, stack_ptr
-		# Set global pointer 
+		la gp, _gp
-		la $gp, _gp
+                la ra, _bss_zero
+		j _init
+		nop
 
+		.text
+		.section .text, "ax"
+                .globl _bss_zero
+		.extern board_init
+		.align	2
+		.set	noreorder
+
+_bss_zero:
 		# zero bss
 		la $8, __bss_start
 		la $9, _end
@@ -27,43 +36,26 @@ $zeroise:
 		bne $8, $9, $zeroise
 		addiu	$8, 4
 
-		# Install exception vector jump code
+_board_init:
-		la $t1, _exc_vect_copy_start
-		la $t2, _exc_vect_copy_end
-		la $t0, _exc_vect_start
-
-$install:	lw	$v0, 0($t1)
-		addiu	$t1, 4
-		sw	$v0, 0($t0)
-		bne	$t1, $t2, $install
-		addiu	$t0, 4
-		
-_init:
 		# Call board_init
-		la $k0, board_init
+		la k0, board_init
-		jalr $k0
+		jalr k0
 		nop
 
 		# Set environment
-		li	$a0, 1
+		li	a0, 1
-		la	$a1, argv
+		la	a1, argv
 
 		# Call main
-		la $k0, main
+		la k0, main
-		jalr $k0
+		jalr k0
 		nop
 
 		# Terminate after main returns
 _terminate:	
 		nop
-		la $t0, exit
+		la t0, exit
-		jalr $t0
+		jalr t0
-		move $a0, $v0
+		move a0, v0
-
-_exc_vect_copy_start:
-		la $k0, _xcpt_handler
-		jr $k0
-		nop
-_exc_vect_copy_end:
 
 		.set	reorder