Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

In setregs(), set SF_FLAGS_CALLEE_SAVED in the new process' trapframe

Browse Source 
to ensure the callee-saved set will be restored when we switch to it.
(It doesn't actually matter to the new process; it just inherits some
crud in those registers from the kernel if we don't set the bit).

Also ensure the strings pointer in r7 is sign-extended.
This commit is contained in:
scw 2002-09-04 14:13:28 +00:00
parent 99355049c8
commit 5496168b35
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sys/arch/sh5/sh5/process_machdep.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: process_machdep.c,v 1.2 2002/09/01 11:40:54 scw Exp $ */
/* $NetBSD: process_machdep.c,v 1.3 2002/09/04 14:13:28 scw Exp $ */
/*
* Copyright 2002 Wasabi Systems, Inc.
@ -72,6 +72,7 @@ setregs(struct proc *p, struct exec_package *pack, u_long stack)
tf->tf_state.sf_spc = pack->ep_entry;
tf->tf_state.sf_ssr = SH5_CONREG_SR_MMU;
tf->tf_state.sf_flags = SF_FLAGS_CALLEE_SAVED;
tf->tf_caller.r2 = (register_t) argc; /* argc */
tf->tf_caller.r3 = (register_t) (sstack + sizeof(long)); /* argv */
@ -82,7 +83,7 @@ setregs(struct proc *p, struct exec_package *pack, u_long stack)
* passed by the dynamic loader. The kernel always sets them to 0.
*/
tf->tf_caller.r7 = (register_t) (uintptr_t) p->p_psstr;
tf->tf_caller.r7 = (register_t)(long)p->p_psstr;
/* Align the stack as required by the SH-5 ABI */
tf->tf_caller.r15 = (register_t) (sstack & ~0xf);