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[src/trunk]: src/sys/arch/xen Remove dead code. This looks like a leftover fr...
details: https://anonhg.NetBSD.org/src/rev/175c5454d1fb
branches: trunk
changeset: 324905:175c5454d1fb
user: maxv <maxv%NetBSD.org@localhost>
date: Thu Jul 26 15:26:10 2018 +0000
description:
Remove dead code. This looks like a leftover from when our Xen port was
being developed (2004), and it seems to have been copied from the Xen
kernel examples. It can't have any use, so get rid of it. Also remove
vprintk, unused.
diffstat:
sys/arch/xen/include/xen.h | 3 +-
sys/arch/xen/xen/xen_debug.c | 366 +------------------------------------------
2 files changed, 3 insertions(+), 366 deletions(-)
diffs (truncated from 419 to 300 lines):
diff -r f168b2b621b4 -r 175c5454d1fb sys/arch/xen/include/xen.h
--- a/sys/arch/xen/include/xen.h Thu Jul 26 15:06:14 2018 +0000
+++ b/sys/arch/xen/include/xen.h Thu Jul 26 15:26:10 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: xen.h,v 1.37 2016/07/07 06:55:40 msaitoh Exp $ */
+/* $NetBSD: xen.h,v 1.38 2018/07/26 15:26:10 maxv Exp $ */
/*
*
@@ -79,7 +79,6 @@
#include <sys/stdarg.h>
void printk(const char *, ...);
-void vprintk(const char *, va_list);
#endif
#endif
diff -r f168b2b621b4 -r 175c5454d1fb sys/arch/xen/xen/xen_debug.c
--- a/sys/arch/xen/xen/xen_debug.c Thu Jul 26 15:06:14 2018 +0000
+++ b/sys/arch/xen/xen/xen_debug.c Thu Jul 26 15:26:10 2018 +0000
@@ -1,7 +1,6 @@
-/* $NetBSD: xen_debug.c,v 1.9 2016/07/07 06:55:40 msaitoh Exp $ */
+/* $NetBSD: xen_debug.c,v 1.10 2018/07/26 15:26:10 maxv Exp $ */
/*
- *
* Copyright (c) 2004 Christian Limpach.
* All rights reserved.
*
@@ -27,7 +26,6 @@
*/
/*
- *
* Copyright (c) 2002-2003, K A Fraser & R Neugebauer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -49,9 +47,8 @@
* DEALINGS IN THE SOFTWARE.
*/
-
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xen_debug.c,v 1.9 2016/07/07 06:55:40 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xen_debug.c,v 1.10 2018/07/26 15:26:10 maxv Exp $");
#define XENDEBUG
@@ -62,7 +59,6 @@
#include <xen/hypervisor.h>
#ifdef XENDEBUG
-
#define PRINTK_BUFSIZE 1024
void
printk(const char *fmt, ...)
@@ -77,362 +73,4 @@
buf[ret] = 0;
(void)HYPERVISOR_console_io(CONSOLEIO_write, ret, buf);
}
-
-void
-vprintk(const char *fmt, va_list ap)
-{
- int ret;
- static char buf[PRINTK_BUFSIZE];
-
- ret = vsnprintf(buf, PRINTK_BUFSIZE - 1, fmt, ap);
- buf[ret] = 0;
- (void)HYPERVISOR_console_io(CONSOLEIO_write, ret, buf);
-}
-
#endif
-
-#ifdef XENDEBUG_LOW
-
-int xen_once = 0;
-
-void hypervisor_callback(void);
-void failsafe_callback(void);
-
-void xen_dbglow_init(void);
-void
-xen_dbglow_init(void)
-{
- start_info_t *si;
-#if 0
- int i;
-#endif
-
- si = &xen_start_info;
-
- HYPERVISOR_set_callbacks(
- __KERNEL_CS, (unsigned long)hypervisor_callback,
- __KERNEL_CS, (unsigned long)failsafe_callback);
-
- trap_init();
-
- /* __sti(); */
-
- /* print out some useful information */
- printk(version);
- printk("start_info: %p\n", si);
- printk(" nr_pages: %lu", si->nr_pages);
- printk(" shared_inf: %p (was %p)\n", HYPERVISOR_shared_info,
- si->shared_info);
- printk(" pt_base: %p", (void *)si->pt_base);
- printk(" mod_start: 0x%lx\n", si->mod_start);
- printk(" mod_len: %lu\n", si->mod_len);
-#if 0
- printk(" net_rings: ");
- for (i = 0; i < MAX_DOMAIN_VIFS; i++) {
- if (si->net_rings[i] == 0)
- break;
- printk(" %lx", si->net_rings[i]);
- };
- printk("\n");
- printk(" blk_ring: 0x%lx\n", si->blk_ring);
-#endif
- printk(" dom_id: %d\n", si->dom_id);
- printk(" flags: 0x%lx\n", si->flags);
- printk(" cmd_line: %s\n", si->cmd_line ?
- (const char *)si->cmd_line : "NULL");
-}
-
-
-void xen_dbg0(char *);
-void
-xen_dbg0(char *end)
-{
- struct cpu_info *ci;
-
- ci = &cpu_info_primary;
- if (xen_once)
- printk("xencpu level %d ipending %08x master %08x\n",
- ci->ci_ilevel, ci->ci_ipending,
- HYPERVISOR_shared_info->events_mask);
- /* ipending %08x imask %08x iunmask %08x */
- /* ci->ci_imask[IPL_NET], ci->ci_iunmask[IPL_NET]); */
-}
-
-void xen_dbg1(void *esp, int ss);
-void
-xen_dbg1(void *esp, int ss)
-{
-#if 1
- struct cpu_info *ci;
-
- ci = &cpu_info_primary;
- if (xen_once)
- printk("xenhighlevel %d ipending %08x master %08x events %08x\n",
- ci->ci_ilevel, ci->ci_ipending,
- HYPERVISOR_shared_info->events_mask, HYPERVISOR_shared_info->events);
-#else
- printk("stack switch %p %d/%d, sp %p\n", esp, ss, IDXSEL(ss), &ss);
-#endif
-}
-
-void xen_dbg2(void);
-void
-xen_dbg2(void)
-{
- if (xen_once)
- printk("xen_dbg2\n");
-}
-
-void xen_dbg3(void *, void *);
-void
-xen_dbg3(void *ss, void *esp)
-{
- if (xen_once)
- printk("xen_dbg3 %p %p\n", ss, esp);
-}
-
-void xen_dbg4(void *);
-void
-xen_dbg4(void *esi)
-{
-
- printk("xen_dbg4 %p\n", esi);
- for(;;);
-}
-
-
-
-
-static void do_exit(void);
-
-/*
- * These are assembler stubs in vector.S.
- * They are the actual entry points for virtual exceptions.
- */
-void divide_error(void);
-void debug(void);
-void int3(void);
-void overflow(void);
-void bounds(void);
-void invalid_op(void);
-void device_not_available(void);
-void double_fault(void);
-void coprocessor_segment_overrun(void);
-void invalid_TSS(void);
-void segment_not_present(void);
-void stack_segment(void);
-void general_protection(void);
-void page_fault(void);
-void coprocessor_error(void);
-void simd_coprocessor_error(void);
-void alignment_check(void);
-void spurious_interrupt_bug(void);
-void machine_check(void);
-
-static void
-dump_regs(struct pt_regs *regs)
-{
- int in_kernel = 1;
- unsigned long esp;
- unsigned short ss;
-
- esp = (unsigned long) (®s->esp);
- ss = __KERNEL_DS;
- if (regs->xcs & 2) {
- in_kernel = 0;
- esp = regs->esp;
- ss = regs->xss & 0xffff;
- }
- printf("EIP: %04x:[<%08lx>]\n",
- 0xffff & regs->xcs, regs->eip);
- printf("EFLAGS: %08lx\n",regs->eflags);
- printf("eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n",
- regs->eax, regs->ebx, regs->ecx, regs->edx);
- printf("esi: %08lx edi: %08lx ebp: %08lx esp: %08lx\n",
- regs->esi, regs->edi, regs->ebp, esp);
- printf("ds: %04x es: %04x ss: %04x\n",
- regs->xds & 0xffff, regs->xes & 0xffff, ss);
- printf("\n");
-}
-
-
-static inline void
-dump_code(unsigned eip)
-{
- unsigned *ptr = (unsigned *)eip;
- int x;
-
- printk("Bytes at eip:\n");
- for (x = -4; x < 5; x++)
- printf("%x", ptr[x]);
-}
-
-
-/*
- * C handlers here have their parameter-list constructed by the
- * assembler stubs above. Each one gets a pointer to a list
- * of register values (to be restored at end of exception).
- * Some will also receive an error code -- this is the code that
- * was generated by the processor for the underlying real exception.
- *
- * Note that the page-fault exception is special. It also receives
- * the faulting linear address. Normally this would be found in
- * register CR2, but that is not accessible in a virtualised OS.
- */
-
-static void inline
-do_trap(int trapnr, char *str, struct pt_regs *regs, long error_code)
-{
-
- printk("FATAL: Unhandled Trap (see mini-os:traps.c)");
- printf("%d %s", trapnr, str);
- dump_regs(regs);
- dump_code(regs->eip);
-
- do_exit();
-}
-
-#define DO_ERROR(trapnr, str, name) \
-void do_##name(struct pt_regs *regs, long error_code); \
-void do_##name(struct pt_regs *regs, long error_code) \
-{ \
- do_trap(trapnr, str, regs, error_code); \
-}
-
-#define DO_ERROR_INFO(trapnr, str, name, sicode, siaddr) \
-void do_##name(struct pt_regs *regs, long error_code); \
-void do_##name(struct pt_regs *regs, long error_code) \
-{ \
- do_trap(trapnr, str, regs, error_code); \
-}
-
-DO_ERROR_INFO( 0, "divide error", divide_error, FPE_INTDIV, regs->eip)
-DO_ERROR( 3, "int3", int3)
-DO_ERROR( 4, "overflow", overflow)
-DO_ERROR( 5, "bounds", bounds)
-DO_ERROR_INFO( 6, "invalid operand", invalid_op, ILL_ILLOPN, regs->eip)
-DO_ERROR( 7, "device not available", device_not_available)
-DO_ERROR( 8, "double fault", double_fault)
-DO_ERROR( 9, "coprocessor segment overrun", coprocessor_segment_overrun)
-DO_ERROR(10, "invalid TSS", invalid_TSS)
-DO_ERROR(11, "segment not present", segment_not_present)
-DO_ERROR(12, "stack segment", stack_segment)
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