Changeset 2217ac3 in mainline for arch/ia64/src

Timestamp:

2005-05-03T11:30:21Z (20 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

0f4e706

Parents:

2a0047fc

Message:

More IA-64 work.
IA-64 putchar() for Ski simulator.
Linker script changes.

Location:

arch/ia64/src

Files:

• putchar.c (modified) (1 diff)
• start.S (modified) (1 diff)

arch/ia64/src/putchar.c

@@ -29 +29 @@
 #include <putchar.h>
 #include <arch/types.h>
+#include <arch/ski/ski.h>
 
 void putchar(char ch)
 {
+        __asm__ (
+                "mov r15=%0\n"
+                "mov r32=%1\n"          /* r32 is in0 */
+                "break 0x80000\n"       /* modifies r8 */
+                :
+                : "i" (SKI_CONSOLE_PUTC), "r" (ch)
+                : "r15", "in0", "r8"
+        );
+        
+        if (ch == '\n') putchar('\r');
 }

arch/ia64/src/start.S

@@ -33 +33 @@
 .global kernel_image_start
 
+stack0:
 kernel_image_start:
         # initialize gp (Global Pointer) register
-        mov r1=0x1000
+        mov r1=kernel_image_start;
 
-        # initialize Ski console using SSC (Simulator System Sall)
+        # set stack pointer to some sane value
+        mov r12=stack0
+        
+        # initialize Ski console using SSC (Simulator System Call)
         mov r15=SKI_CONSOLE_INIT
         break 0x80000
 
 0:
-        mov r15=SKI_CONSOLE_PUTC
-        mov r32='.'
-        break 0x80000
-
         br 0b