From 18e76a6c47b0f62b2458430d4357f3eb68bfd759 Mon Sep 17 00:00:00 2001
From: Robert Morris <rtm@csail.mit.edu>
Date: Mon, 1 Jul 2019 17:01:50 -0400
Subject: sbrk() returns a pointer, so it should be 64 bits

---
 kernel/sysproc.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

(limited to 'kernel/sysproc.c')

diff --git a/kernel/sysproc.c b/kernel/sysproc.c
index e57e045..93ea9bc 100644
--- a/kernel/sysproc.c
+++ b/kernel/sysproc.c
@@ -6,32 +6,32 @@
 #include "memlayout.h"
 #include "proc.h"
 
-int
+uint64
 sys_exit(void)
 {
   exit();
   return 0;  // not reached
 }
 
-int
+uint64
 sys_getpid(void)
 {
   return myproc()->pid;
 }
 
-int
+uint64
 sys_fork(void)
 {
   return fork();
 }
 
-int
+uint64
 sys_wait(void)
 {
   return wait();
 }
 
-int
+uint64
 sys_sbrk(void)
 {
   int addr;
@@ -45,7 +45,7 @@ sys_sbrk(void)
   return addr;
 }
 
-int
+uint64
 sys_sleep(void)
 {
   int n;
@@ -66,7 +66,7 @@ sys_sleep(void)
   return 0;
 }
 
-int
+uint64
 sys_kill(void)
 {
   int pid;
@@ -78,7 +78,7 @@ sys_kill(void)
 
 // return how many clock tick interrupts have occurred
 // since start.
-int
+uint64
 sys_uptime(void)
 {
   uint xticks;
-- 
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