Updated comments, removed a lot of dead code and other old debugging
functions.
This commit is contained in:
mark
parent
65bd075be8
commit
713cab03b9
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@ -1,4 +1,4 @@
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/* $NetBSD: syscall.c,v 1.3 1996/02/23 18:50:56 mark Exp $ */
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/* $NetBSD: syscall.c,v 1.4 1996/03/08 21:08:39 mark Exp $ */
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/*
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* Copyright (c) 1994,1995 Mark Brinicombe.
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@ -41,9 +41,6 @@
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* High level syscall handling
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*
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* Created : 09/11/94
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* Last updated : 28/08/95
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*
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* $Id: syscall.c,v 1.3 1996/02/23 18:50:56 mark Exp $
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*/
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#include <sys/param.h>
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@ -79,15 +76,18 @@
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#include "hydrabus.h"
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/*
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* CONTINUE_AFTER_SYSCALL_BUG is used to determine whether the kernel
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* should continue running following a swi instruction in SVC mode.
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* This was used for debugging.
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*/
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#define CONTINUE_AFTER_SYSCALL_BUG
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extern int pmap_debug_level;
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extern u_int *cursor_data;
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extern u_int kmodule_size;
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extern u_int kmodule_base;
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extern char *kstack;
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int syscallcode;
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trapframe_t syscallframe;
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u_int arm700bugcount = 0;
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extern int vnodeconsolebug;
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extern int usertraceback;
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@ -133,22 +133,6 @@ syscall(frame, code)
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cnt.v_syscall++;
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#ifdef DIAGNOSTIC
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/*
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* Brick wall time ... If the trap frame is not at the top of the stack then
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* we have reached "syscall in kernel mode" time.
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* This test is scheduled for deletion.
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*/
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if ((u_int)frame != 0xefbfffb8) {
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u_int s;
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s = splhigh();
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printf("nkt: trapframe=%08x code = %d curproc=%08x\n",
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(u_int)frame, code, (u_int)curproc);
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(void)splx(s);
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}
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if ((frame->tf_spsr & PSR_MODE) != PSR_USR32_MODE) {
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u_int s;
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@ -187,21 +171,6 @@ syscall(frame, code)
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*/
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if ((ReadWord(frame->tf_pc - 4) & 0x0f000000) != 0x0f000000) {
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u_int s;
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#if 0
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/* Report the condition */
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s = splhigh();
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printf("address=%08x [%08x] - not a swi\n", frame->tf_pc - 4, ReadWord(frame->tf_pc - 4));
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/* Up the debug level in case of page fault - bug occurs on page boundry */
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pmap_debug_level = 2;
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disassemble(frame->tf_pc - 4);
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pmap_debug_level = -4;
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(void)splx(s);
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#endif
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frame->tf_pc -= 4;
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++arm700bugcount;
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@ -214,9 +183,6 @@ syscall(frame, code)
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}
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#ifdef DIAGNOSTIC
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syscallcode = code;
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syscallframe = *frame;
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if ((GetCPSR() & PSR_MODE) != PSR_SVC32_MODE) {
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splhigh();
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@ -254,14 +220,6 @@ syscall(frame, code)
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callp = p->p_emul->e_sysent;
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switch (code) {
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case 0x1000:
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case 0x1001:
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case 0x1005:
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case 0x1006:
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printf("This call has been revoked (%04x) - Do not use\n", code);
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SYSCALL_SPECIAL_RETURN;
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break;
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case 0x1002:
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printf((char *)frame->tf_r0, frame->tf_r1, frame->tf_r2, frame->tf_r3);
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SYSCALL_SPECIAL_RETURN;
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@ -272,34 +230,23 @@ syscall(frame, code)
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SYSCALL_SPECIAL_RETURN;
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break;
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case 0x1004:
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/* case 0x1004:
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if (frame->tf_r0 != 0)
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panic((char *)frame->tf_r0, frame->tf_r1, frame->tf_r2,
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frame->tf_r3);
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panic("SYSCALL 0x1004 panic\n");
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break;
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break;*/
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case 0x1007:
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/* case 0x1007:
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pmap_debug(frame->tf_r0);
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SYSCALL_SPECIAL_RETURN;
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break;
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break;*/
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case 0x1008:
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switch (frame->tf_r0) {
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case 0 :
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debug_show_all_procs(frame->tf_r1, frame->tf_r2);
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break;
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case 1 :
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debug_show_fs(frame->tf_r1, frame->tf_r2);
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break;
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case 2 :
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debug_show_callout(frame->tf_r1, frame->tf_r2);
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break;
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#ifdef KSHELL
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case 3 :
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shell_vmmap(frame->tf_r1, frame->tf_r2);
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break;
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#endif
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#ifdef FPE
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case 4 :
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fpe_dump_prof();
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@ -326,18 +273,15 @@ syscall(frame, code)
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case 11:
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frame->tf_r0 = ReadShort(frame->tf_r1);
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break;
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case 12:
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/* case 12:
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shell_kstack(frame->tf_r1, frame->tf_r2);
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break;
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case 15:
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bcopy((char *)frame->tf_r1, (char *)cursor_data, frame->tf_r2);
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break;
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break;*/
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case 16:
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pmap_pagedir_dump();
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break;
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case 32:
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/* case 32:
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frame->tf_r0 = pmap_next_phys_page(frame->tf_r1);
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break;
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break;*/
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default:
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printf("Unknown SYS_special call (%d)\n", frame->tf_r0);
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break;
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@ -350,7 +294,7 @@ syscall(frame, code)
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frame->tf_r0 = pmap_page_attributes(frame->tf_r0);
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SYSCALL_SPECIAL_RETURN;
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break;
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/*
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case 0x1010:
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frame->tf_r0 = kmodule_base;
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SYSCALL_SPECIAL_RETURN;
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@ -382,6 +326,7 @@ syscall(frame, code)
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}
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SYSCALL_SPECIAL_RETURN;
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break;
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*/
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#if NHYDRABUS > 0
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case 0x1014:
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frame->tf_r0 = hydrascratch.physical;
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@ -470,11 +415,6 @@ syscall(frame, code)
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SYSCALL_SPECIAL_RETURN;
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break;
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#endif
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case 0x1029:
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check_stacks(pfind(frame->tf_r0));
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SYSCALL_SPECIAL_RETURN;
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break;
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case 0x102a:
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usertraceback = frame->tf_r0;
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SYSCALL_SPECIAL_RETURN;
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