patch-2.4.19 linux-2.4.19/arch/ppc64/xmon/xmon.c
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- Lines: 2841
- Date:
Fri Aug 2 17:39:43 2002
- Orig file:
linux-2.4.18/arch/ppc64/xmon/xmon.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -urN linux-2.4.18/arch/ppc64/xmon/xmon.c linux-2.4.19/arch/ppc64/xmon/xmon.c
@@ -0,0 +1,2840 @@
+/*
+ * Routines providing a simple monitor for use on the PowerMac.
+ *
+ * Copyright (C) 1996 Paul Mackerras.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/mm.h>
+#include <linux/reboot.h>
+#include <asm/ptrace.h>
+#include <asm/string.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+#include <asm/processor.h>
+#include <asm/pgtable.h>
+#include <asm/mmu.h>
+#include <asm/mmu_context.h>
+#include <asm/naca.h>
+#include <asm/paca.h>
+#include <asm/ppcdebug.h>
+#include "nonstdio.h"
+#include "privinst.h"
+
+#define scanhex xmon_scanhex
+#define skipbl xmon_skipbl
+
+#ifdef CONFIG_SMP
+static unsigned long cpus_in_xmon = 0;
+static unsigned long got_xmon = 0;
+static volatile int take_xmon = -1;
+#endif /* CONFIG_SMP */
+
+static unsigned long adrs;
+static int size = 1;
+static unsigned long ndump = 64;
+static unsigned long nidump = 16;
+static unsigned long ncsum = 4096;
+static int termch;
+
+static u_int bus_error_jmp[100];
+#define setjmp xmon_setjmp
+#define longjmp xmon_longjmp
+
+#define memlist_entry list_entry
+#define memlist_next(x) ((x)->next)
+#define memlist_prev(x) ((x)->prev)
+
+
+/* Max number of stack frames we are willing to produce on a backtrace. */
+#define MAXFRAMECOUNT 50
+
+/* Breakpoint stuff */
+struct bpt {
+ unsigned long address;
+ unsigned instr;
+ unsigned long count;
+ unsigned char enabled;
+ char funcname[64]; /* function name for humans */
+};
+
+#define NBPTS 16
+static struct bpt bpts[NBPTS];
+static struct bpt dabr;
+static struct bpt iabr;
+static unsigned bpinstr = 0x7fe00008; /* trap */
+
+/* Prototypes */
+extern void (*debugger_fault_handler)(struct pt_regs *);
+static int cmds(struct pt_regs *);
+static int mread(unsigned long, void *, int);
+static int mwrite(unsigned long, void *, int);
+static void handle_fault(struct pt_regs *);
+static void byterev(unsigned char *, int);
+static void memex(void);
+static int bsesc(void);
+static void dump(void);
+static void prdump(unsigned long, long);
+#ifdef __MWERKS__
+static void prndump(unsigned, int);
+static int nvreadb(unsigned);
+#endif
+static int ppc_inst_dump(unsigned long, long);
+void print_address(unsigned long);
+static int getsp(void);
+static void dump_hash_table(void);
+static void backtrace(struct pt_regs *);
+static void excprint(struct pt_regs *);
+static void prregs(struct pt_regs *);
+static void memops(int);
+static void memlocate(void);
+static void memzcan(void);
+static void memdiffs(unsigned char *, unsigned char *, unsigned, unsigned);
+int skipbl(void);
+int scanhex(unsigned long *valp);
+static void scannl(void);
+static int hexdigit(int);
+void getstring(char *, int);
+static void flush_input(void);
+static int inchar(void);
+static void take_input(char *);
+/* static void openforth(void); */
+static unsigned long read_spr(int);
+static void write_spr(int, unsigned long);
+static void super_regs(void);
+static void print_sysmap(void);
+static void remove_bpts(void);
+static void insert_bpts(void);
+static struct bpt *at_breakpoint(unsigned long pc);
+static void bpt_cmds(void);
+static void cacheflush(void);
+#ifdef CONFIG_SMP
+static void cpu_cmd(void);
+#endif /* CONFIG_SMP */
+static void csum(void);
+static void mem_translate(void);
+static void mem_check(void);
+static void mem_find_real(void);
+static void mem_find_vsid(void);
+static void mem_check_full_group(void);
+static void mem_check_pagetable_vsids (void);
+
+static void mem_map_check_slab(void);
+static void mem_map_lock_pages(void);
+static void mem_map_check_hash(void);
+static void mem_check_dup_rpn (void);
+static void debug_trace(void);
+
+extern int print_insn_big_powerpc(FILE *, unsigned long, unsigned long);
+extern void printf(const char *fmt, ...);
+extern void xmon_vfprintf(void *f, const char *fmt, va_list ap);
+extern int xmon_putc(int c, void *f);
+extern int putchar(int ch);
+extern int xmon_read_poll(void);
+extern int setjmp(u_int *);
+extern void longjmp(u_int *, int);
+extern unsigned long _ASR;
+
+pte_t *find_linux_pte(pgd_t *pgdir, unsigned long va); /* from htab.c */
+
+#define GETWORD(v) (((v)[0] << 24) + ((v)[1] << 16) + ((v)[2] << 8) + (v)[3])
+
+static char *help_string = "\
+Commands:\n\
+ b show breakpoints\n\
+ bd set data breakpoint\n\
+ bi set instruction breakpoint\n\
+ bc clear breakpoint\n\
+ d dump bytes\n\
+ di dump instructions\n\
+ df dump float values\n\
+ dd dump double values\n\
+ e print exception information\n\
+ f flush cache\n\
+ h dump hash table\n\
+ m examine/change memory\n\
+ mm move a block of memory\n\
+ ms set a block of memory\n\
+ md compare two blocks of memory\n\
+ ml locate a block of memory\n\
+ mz zero a block of memory\n\
+ mx translation information for an effective address\n\
+ mi show information about memory allocation\n\
+ M print System.map\n\
+ p show the task list\n\
+ r print registers\n\
+ s single step\n\
+ S print special registers\n\
+ t print backtrace\n\
+ T Enable/Disable PPCDBG flags\n\
+ x exit monitor\n\
+ z reboot\n\
+ Z halt\n\
+";
+
+static int xmon_trace[NR_CPUS];
+#define SSTEP 1 /* stepping because of 's' command */
+#define BRSTEP 2 /* stepping over breakpoint */
+
+/*
+ * Stuff for reading and writing memory safely
+ */
+extern inline void sync(void)
+{
+ asm volatile("sync; isync");
+}
+
+extern inline void __delay(unsigned int loops)
+{
+ if (loops != 0)
+ __asm__ __volatile__("mtctr %0; 1: bdnz 1b" : :
+ "r" (loops) : "ctr");
+}
+
+/* (Ref: 64-bit PowerPC ELF ABI Spplement; Ian Lance Taylor, Zembu Labs).
+ A PPC stack frame looks like this:
+
+ High Address
+ Back Chain
+ FP reg save area
+ GP reg save area
+ Local var space
+ Parameter save area (SP+48)
+ TOC save area (SP+40)
+ link editor doubleword (SP+32)
+ compiler doubleword (SP+24)
+ LR save (SP+16)
+ CR save (SP+8)
+ Back Chain (SP+0)
+
+ Note that the LR (ret addr) may not be saved in the current frame if
+ no functions have been called from the current function.
+ */
+
+/*
+ A traceback table typically follows each function.
+ The find_tb_table() func will fill in this struct. Note that the struct
+ is not an exact match with the encoded table defined by the ABI. It is
+ defined here more for programming convenience.
+ */
+struct tbtable {
+ unsigned long flags; /* flags: */
+#define TBTAB_FLAGSGLOBALLINK (1L<<47)
+#define TBTAB_FLAGSISEPROL (1L<<46)
+#define TBTAB_FLAGSHASTBOFF (1L<<45)
+#define TBTAB_FLAGSINTPROC (1L<<44)
+#define TBTAB_FLAGSHASCTL (1L<<43)
+#define TBTAB_FLAGSTOCLESS (1L<<42)
+#define TBTAB_FLAGSFPPRESENT (1L<<41)
+#define TBTAB_FLAGSNAMEPRESENT (1L<<38)
+#define TBTAB_FLAGSUSESALLOCA (1L<<37)
+#define TBTAB_FLAGSSAVESCR (1L<<33)
+#define TBTAB_FLAGSSAVESLR (1L<<32)
+#define TBTAB_FLAGSSTORESBC (1L<<31)
+#define TBTAB_FLAGSFIXUP (1L<<30)
+#define TBTAB_FLAGSPARMSONSTK (1L<<0)
+ unsigned char fp_saved; /* num fp regs saved f(32-n)..f31 */
+ unsigned char gpr_saved; /* num gpr's saved */
+ unsigned char fixedparms; /* num fixed point parms */
+ unsigned char floatparms; /* num float parms */
+ unsigned char parminfo[32]; /* types of args. null terminated */
+#define TBTAB_PARMFIXED 1
+#define TBTAB_PARMSFLOAT 2
+#define TBTAB_PARMDFLOAT 3
+ unsigned int tb_offset; /* offset from start of func */
+ unsigned long funcstart; /* addr of start of function */
+ char name[64]; /* name of function (null terminated)*/
+};
+static int find_tb_table(unsigned long codeaddr, struct tbtable *tab);
+
+void
+xmon(struct pt_regs *excp)
+{
+ struct pt_regs regs;
+ int cmd;
+ unsigned long msr;
+
+ if (excp == NULL) {
+ /* Ok, grab regs as they are now.
+ This won't do a particularily good job because the
+ prologue has already been executed.
+ ToDo: We could reach back into the callers save
+ area to do a better job of representing the
+ caller's state.
+ */
+ asm volatile ("std 0,0(%0)\n\
+ std 1,8(%0)\n\
+ std 2,16(%0)\n\
+ std 3,24(%0)\n\
+ std 4,32(%0)\n\
+ std 5,40(%0)\n\
+ std 6,48(%0)\n\
+ std 7,56(%0)\n\
+ std 8,64(%0)\n\
+ std 9,72(%0)\n\
+ std 10,80(%0)\n\
+ std 11,88(%0)\n\
+ std 12,96(%0)\n\
+ std 13,104(%0)\n\
+ std 14,112(%0)\n\
+ std 15,120(%0)\n\
+ std 16,128(%0)\n\
+ std 17,136(%0)\n\
+ std 18,144(%0)\n\
+ std 19,152(%0)\n\
+ std 20,160(%0)\n\
+ std 21,168(%0)\n\
+ std 22,176(%0)\n\
+ std 23,184(%0)\n\
+ std 24,192(%0)\n\
+ std 25,200(%0)\n\
+ std 26,208(%0)\n\
+ std 27,216(%0)\n\
+ std 28,224(%0)\n\
+ std 29,232(%0)\n\
+ std 30,240(%0)\n\
+ std 31,248(%0)" : : "b" (®s));
+ printf("xmon called\n");
+ /* Fetch the link reg for this stack frame.
+ NOTE: the prev printf fills in the lr. */
+ regs.nip = regs.link = ((unsigned long *)(regs.gpr[1]))[2];
+ regs.msr = get_msr();
+ regs.ctr = get_ctr();
+ regs.xer = get_xer();
+ regs.ccr = get_cr();
+ regs.trap = 0;
+ excp = ®s;
+ }
+
+ msr = get_msr();
+ set_msrd(msr & ~MSR_EE); /* disable interrupts */
+ excprint(excp);
+#ifdef CONFIG_SMP
+ if (test_and_set_bit(smp_processor_id(), &cpus_in_xmon))
+ for (;;)
+ ;
+ while (test_and_set_bit(0, &got_xmon)) {
+ if (take_xmon == smp_processor_id()) {
+ take_xmon = -1;
+ break;
+ }
+ }
+ /*
+ * XXX: breakpoints are removed while any cpu is in xmon
+ */
+#endif /* CONFIG_SMP */
+ remove_bpts();
+ cmd = cmds(excp);
+ if (cmd == 's') {
+ xmon_trace[smp_processor_id()] = SSTEP;
+ excp->msr |= 0x400;
+ } else if (at_breakpoint(excp->nip)) {
+ xmon_trace[smp_processor_id()] = BRSTEP;
+ excp->msr |= 0x400;
+ } else {
+ xmon_trace[smp_processor_id()] = 0;
+ insert_bpts();
+ }
+#ifdef CONFIG_SMP
+ clear_bit(0, &got_xmon);
+ clear_bit(smp_processor_id(), &cpus_in_xmon);
+#endif /* CONFIG_SMP */
+ set_msrd(msr); /* restore interrupt enable */
+}
+
+/* Code can call this to get a backtrace and continue. */
+void
+xmon_backtrace(const char *fmt, ...)
+{
+ va_list ap;
+ struct pt_regs regs;
+
+
+ /* Ok, grab regs as they are now.
+ This won't do a particularily good job because the
+ prologue has already been executed.
+ ToDo: We could reach back into the callers save
+ area to do a better job of representing the
+ caller's state.
+ */
+ asm volatile ("std 0,0(%0)\n\
+ std 1,8(%0)\n\
+ std 2,16(%0)\n\
+ std 3,24(%0)\n\
+ std 4,32(%0)\n\
+ std 5,40(%0)\n\
+ std 6,48(%0)\n\
+ std 7,56(%0)\n\
+ std 8,64(%0)\n\
+ std 9,72(%0)\n\
+ std 10,80(%0)\n\
+ std 11,88(%0)\n\
+ std 12,96(%0)\n\
+ std 13,104(%0)\n\
+ std 14,112(%0)\n\
+ std 15,120(%0)\n\
+ std 16,128(%0)\n\
+ std 17,136(%0)\n\
+ std 18,144(%0)\n\
+ std 19,152(%0)\n\
+ std 20,160(%0)\n\
+ std 21,168(%0)\n\
+ std 22,176(%0)\n\
+ std 23,184(%0)\n\
+ std 24,192(%0)\n\
+ std 25,200(%0)\n\
+ std 26,208(%0)\n\
+ std 27,216(%0)\n\
+ std 28,224(%0)\n\
+ std 29,232(%0)\n\
+ std 30,240(%0)\n\
+ std 31,248(%0)" : : "b" (®s));
+ /* Fetch the link reg for this stack frame.
+ NOTE: the prev printf fills in the lr. */
+ regs.nip = regs.link = ((unsigned long *)(regs.gpr[1]))[2];
+ regs.msr = get_msr();
+ regs.ctr = get_ctr();
+ regs.xer = get_xer();
+ regs.ccr = get_cr();
+ regs.trap = 0;
+
+ va_start(ap, fmt);
+ xmon_vfprintf(stdout, fmt, ap);
+ xmon_putc('\n', stdout);
+ va_end(ap);
+ take_input("\n");
+ backtrace(®s);
+}
+
+/* Call this to poll for ^C during busy operations.
+ * Returns true if the user has hit ^C.
+ */
+int
+xmon_interrupted(void)
+{
+ int ret = xmon_read_poll();
+ if (ret == 3) {
+ printf("\n^C interrupted.\n");
+ return 1;
+ }
+ return 0;
+}
+
+
+void
+xmon_irq(int irq, void *d, struct pt_regs *regs)
+{
+ unsigned long flags;
+ __save_flags(flags);
+ __cli();
+ printf("Keyboard interrupt\n");
+ xmon(regs);
+ __restore_flags(flags);
+}
+
+int
+xmon_bpt(struct pt_regs *regs)
+{
+ struct bpt *bp;
+
+ bp = at_breakpoint(regs->nip);
+ if (!bp)
+ return 0;
+ if (bp->count) {
+ --bp->count;
+ remove_bpts();
+ excprint(regs);
+ xmon_trace[smp_processor_id()] = BRSTEP;
+ regs->msr |= 0x400;
+ } else {
+ printf("Stopped at breakpoint %x (%lx %s)\n", (bp - bpts)+1, bp->address, bp->funcname);
+ xmon(regs);
+ }
+ return 1;
+}
+
+int
+xmon_sstep(struct pt_regs *regs)
+{
+ if (!xmon_trace[smp_processor_id()])
+ return 0;
+ if (xmon_trace[smp_processor_id()] == BRSTEP) {
+ xmon_trace[smp_processor_id()] = 0;
+ insert_bpts();
+ } else {
+ xmon(regs);
+ }
+ return 1;
+}
+
+int
+xmon_dabr_match(struct pt_regs *regs)
+{
+ if (dabr.enabled && dabr.count) {
+ --dabr.count;
+ remove_bpts();
+ excprint(regs);
+ xmon_trace[smp_processor_id()] = BRSTEP;
+ regs->msr |= 0x400;
+ } else {
+ dabr.instr = regs->nip;
+ xmon(regs);
+ }
+ return 1;
+}
+
+int
+xmon_iabr_match(struct pt_regs *regs)
+{
+ if (iabr.enabled && iabr.count) {
+ --iabr.count;
+ remove_bpts();
+ excprint(regs);
+ xmon_trace[smp_processor_id()] = BRSTEP;
+ regs->msr |= 0x400;
+ } else {
+ xmon(regs);
+ }
+ return 1;
+}
+
+static struct bpt *
+at_breakpoint(unsigned long pc)
+{
+ int i;
+ struct bpt *bp;
+
+ if (dabr.enabled && pc == dabr.instr)
+ return &dabr;
+ if (iabr.enabled && pc == iabr.address)
+ return &iabr;
+ bp = bpts;
+ for (i = 0; i < NBPTS; ++i, ++bp)
+ if (bp->enabled && pc == bp->address)
+ return bp;
+ return 0;
+}
+
+static void
+insert_bpts()
+{
+ int i;
+ struct bpt *bp;
+
+ if (naca->platform != PLATFORM_PSERIES)
+ return;
+ bp = bpts;
+ for (i = 0; i < NBPTS; ++i, ++bp) {
+ if (!bp->enabled)
+ continue;
+ if (mread(bp->address, &bp->instr, 4) != 4
+ || mwrite(bp->address, &bpinstr, 4) != 4) {
+ printf("Couldn't insert breakpoint at %x, disabling\n",
+ bp->address);
+ bp->enabled = 0;
+ } else {
+ store_inst((void *)bp->address);
+ }
+ }
+
+ if (!__is_processor(PV_POWER4)) {
+ if (dabr.enabled)
+ set_dabr(dabr.address);
+ if (iabr.enabled)
+ set_iabr(iabr.address);
+ }
+}
+
+static void
+remove_bpts()
+{
+ int i;
+ struct bpt *bp;
+ unsigned instr;
+
+ if (naca->platform != PLATFORM_PSERIES)
+ return;
+ if (!__is_processor(PV_POWER4)) {
+ set_dabr(0);
+ set_iabr(0);
+ }
+
+ bp = bpts;
+ for (i = 0; i < NBPTS; ++i, ++bp) {
+ if (!bp->enabled)
+ continue;
+ if (mread(bp->address, &instr, 4) == 4
+ && instr == bpinstr
+ && mwrite(bp->address, &bp->instr, 4) != 4)
+ printf("Couldn't remove breakpoint at %x\n",
+ bp->address);
+ else
+ store_inst((void *)bp->address);
+ }
+}
+
+static char *last_cmd;
+
+/* Command interpreting routine */
+static int
+cmds(struct pt_regs *excp)
+{
+ int cmd;
+
+ last_cmd = NULL;
+ for(;;) {
+#ifdef CONFIG_SMP
+ printf("%d:", smp_processor_id());
+#endif /* CONFIG_SMP */
+ printf("mon> ");
+ fflush(stdout);
+ flush_input();
+ termch = 0;
+ cmd = skipbl();
+ if( cmd == '\n' ) {
+ if (last_cmd == NULL)
+ continue;
+ take_input(last_cmd);
+ last_cmd = NULL;
+ cmd = inchar();
+ }
+ switch (cmd) {
+ case 'z':
+ printf("Rebooting machine now...");
+ machine_restart(NULL);
+ break;
+ case 'Z':
+ printf("Halting machine now...");
+ machine_halt();
+ break;
+ case 'm':
+ cmd = inchar();
+ switch (cmd) {
+ case 'm':
+ case 's':
+ case 'd':
+ memops(cmd);
+ break;
+ case 'l':
+ memlocate();
+ break;
+ case 'z':
+ memzcan();
+ break;
+ case 'x':
+ mem_translate();
+ break;
+ case 'c':
+ mem_check();
+ break;
+ case 'g':
+ mem_check_full_group();
+ break;
+ case 'j':
+ mem_map_check_slab();
+ break;
+ case 'h':
+ mem_map_check_hash();
+ break;
+ case 'f':
+ mem_find_real();
+ break;
+ case 'e':
+ mem_find_vsid();
+ break;
+ case 'r':
+ mem_check_dup_rpn();
+ break;
+ case 'i':
+ show_mem();
+ break;
+ case 'o':
+ mem_check_pagetable_vsids ();
+ break;
+ case 'q':
+ mem_map_lock_pages() ;
+ break;
+ default:
+ termch = cmd;
+ memex();
+ }
+ break;
+ case 'd':
+ dump();
+ break;
+ case 'r':
+ if (excp != NULL)
+ prregs(excp); /* print regs */
+ break;
+ case 'e':
+ if (excp == NULL)
+ printf("No exception information\n");
+ else
+ excprint(excp);
+ break;
+ case 'M':
+ print_sysmap();
+ break;
+ case 'S':
+ super_regs();
+ break;
+ case 't':
+ backtrace(excp);
+ break;
+ case 'f':
+ cacheflush();
+ break;
+ case 'h':
+ dump_hash_table();
+ break;
+ case 's':
+ case 'x':
+ case EOF:
+ return cmd;
+ case '?':
+ printf(help_string);
+ break;
+ case 'p':
+ show_state();
+ break;
+ case 'b':
+ bpt_cmds();
+ break;
+ case 'C':
+ csum();
+ break;
+#ifdef CONFIG_SMP
+ case 'c':
+ cpu_cmd();
+ break;
+#endif /* CONFIG_SMP */
+ case 'T':
+ debug_trace();
+ break;
+ default:
+ printf("Unrecognized command: ");
+ do {
+ if( ' ' < cmd && cmd <= '~' )
+ putchar(cmd);
+ else
+ printf("\\x%x", cmd);
+ cmd = inchar();
+ } while (cmd != '\n');
+ printf(" (type ? for help)\n");
+ break;
+ }
+ }
+}
+
+#ifdef CONFIG_SMP
+static void cpu_cmd(void)
+{
+ unsigned long cpu;
+ int timeout;
+ int cmd;
+
+ cmd = inchar();
+ if (cmd == 'i') {
+ printf("stopping all cpus\n");
+ /* interrupt other cpu(s) */
+ cpu = MSG_ALL_BUT_SELF;
+ smp_send_xmon_break(cpu);
+ return;
+ }
+ termch = cmd;
+ if (!scanhex(&cpu)) {
+ /* print cpus waiting or in xmon */
+ printf("cpus stopped:");
+ for (cpu = 0; cpu < NR_CPUS; ++cpu) {
+ if (test_bit(cpu, &cpus_in_xmon)) {
+ printf(" %d", cpu);
+ if (cpu == smp_processor_id())
+ printf("*", cpu);
+ }
+ }
+ printf("\n");
+ return;
+ }
+ /* try to switch to cpu specified */
+ take_xmon = cpu;
+ timeout = 10000000;
+ while (take_xmon >= 0) {
+ if (--timeout == 0) {
+ /* yes there's a race here */
+ take_xmon = -1;
+ printf("cpu %u didn't take control\n", cpu);
+ return;
+ }
+ }
+ /* now have to wait to be given control back */
+ while (test_and_set_bit(0, &got_xmon)) {
+ if (take_xmon == smp_processor_id()) {
+ take_xmon = -1;
+ break;
+ }
+ }
+}
+#endif /* CONFIG_SMP */
+
+static unsigned short fcstab[256] = {
+ 0x0000, 0x1189, 0x2312, 0x329b, 0x4624, 0x57ad, 0x6536, 0x74bf,
+ 0x8c48, 0x9dc1, 0xaf5a, 0xbed3, 0xca6c, 0xdbe5, 0xe97e, 0xf8f7,
+ 0x1081, 0x0108, 0x3393, 0x221a, 0x56a5, 0x472c, 0x75b7, 0x643e,
+ 0x9cc9, 0x8d40, 0xbfdb, 0xae52, 0xdaed, 0xcb64, 0xf9ff, 0xe876,
+ 0x2102, 0x308b, 0x0210, 0x1399, 0x6726, 0x76af, 0x4434, 0x55bd,
+ 0xad4a, 0xbcc3, 0x8e58, 0x9fd1, 0xeb6e, 0xfae7, 0xc87c, 0xd9f5,
+ 0x3183, 0x200a, 0x1291, 0x0318, 0x77a7, 0x662e, 0x54b5, 0x453c,
+ 0xbdcb, 0xac42, 0x9ed9, 0x8f50, 0xfbef, 0xea66, 0xd8fd, 0xc974,
+ 0x4204, 0x538d, 0x6116, 0x709f, 0x0420, 0x15a9, 0x2732, 0x36bb,
+ 0xce4c, 0xdfc5, 0xed5e, 0xfcd7, 0x8868, 0x99e1, 0xab7a, 0xbaf3,
+ 0x5285, 0x430c, 0x7197, 0x601e, 0x14a1, 0x0528, 0x37b3, 0x263a,
+ 0xdecd, 0xcf44, 0xfddf, 0xec56, 0x98e9, 0x8960, 0xbbfb, 0xaa72,
+ 0x6306, 0x728f, 0x4014, 0x519d, 0x2522, 0x34ab, 0x0630, 0x17b9,
+ 0xef4e, 0xfec7, 0xcc5c, 0xddd5, 0xa96a, 0xb8e3, 0x8a78, 0x9bf1,
+ 0x7387, 0x620e, 0x5095, 0x411c, 0x35a3, 0x242a, 0x16b1, 0x0738,
+ 0xffcf, 0xee46, 0xdcdd, 0xcd54, 0xb9eb, 0xa862, 0x9af9, 0x8b70,
+ 0x8408, 0x9581, 0xa71a, 0xb693, 0xc22c, 0xd3a5, 0xe13e, 0xf0b7,
+ 0x0840, 0x19c9, 0x2b52, 0x3adb, 0x4e64, 0x5fed, 0x6d76, 0x7cff,
+ 0x9489, 0x8500, 0xb79b, 0xa612, 0xd2ad, 0xc324, 0xf1bf, 0xe036,
+ 0x18c1, 0x0948, 0x3bd3, 0x2a5a, 0x5ee5, 0x4f6c, 0x7df7, 0x6c7e,
+ 0xa50a, 0xb483, 0x8618, 0x9791, 0xe32e, 0xf2a7, 0xc03c, 0xd1b5,
+ 0x2942, 0x38cb, 0x0a50, 0x1bd9, 0x6f66, 0x7eef, 0x4c74, 0x5dfd,
+ 0xb58b, 0xa402, 0x9699, 0x8710, 0xf3af, 0xe226, 0xd0bd, 0xc134,
+ 0x39c3, 0x284a, 0x1ad1, 0x0b58, 0x7fe7, 0x6e6e, 0x5cf5, 0x4d7c,
+ 0xc60c, 0xd785, 0xe51e, 0xf497, 0x8028, 0x91a1, 0xa33a, 0xb2b3,
+ 0x4a44, 0x5bcd, 0x6956, 0x78df, 0x0c60, 0x1de9, 0x2f72, 0x3efb,
+ 0xd68d, 0xc704, 0xf59f, 0xe416, 0x90a9, 0x8120, 0xb3bb, 0xa232,
+ 0x5ac5, 0x4b4c, 0x79d7, 0x685e, 0x1ce1, 0x0d68, 0x3ff3, 0x2e7a,
+ 0xe70e, 0xf687, 0xc41c, 0xd595, 0xa12a, 0xb0a3, 0x8238, 0x93b1,
+ 0x6b46, 0x7acf, 0x4854, 0x59dd, 0x2d62, 0x3ceb, 0x0e70, 0x1ff9,
+ 0xf78f, 0xe606, 0xd49d, 0xc514, 0xb1ab, 0xa022, 0x92b9, 0x8330,
+ 0x7bc7, 0x6a4e, 0x58d5, 0x495c, 0x3de3, 0x2c6a, 0x1ef1, 0x0f78
+};
+
+#define FCS(fcs, c) (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
+
+static void
+csum(void)
+{
+ unsigned int i;
+ unsigned short fcs;
+ unsigned char v;
+
+ if (!scanhex(&adrs))
+ return;
+ if (!scanhex(&ncsum))
+ return;
+ fcs = 0xffff;
+ for (i = 0; i < ncsum; ++i) {
+ if (mread(adrs+i, &v, 1) == 0) {
+ printf("csum stopped at %x\n", adrs+i);
+ break;
+ }
+ fcs = FCS(fcs, v);
+ }
+ printf("%x\n", fcs);
+}
+
+static char *breakpoint_help_string =
+ "Breakpoint command usage:\n"
+ "b show breakpoints\n"
+ "b <addr> [cnt] set breakpoint at given instr addr\n"
+ "bc clear all breakpoints\n"
+ "bc <n/addr> clear breakpoint number n or at addr\n"
+ "bi <addr> [cnt] set hardware instr breakpoint (broken?)\n"
+ "bd <addr> [cnt] set hardware data breakpoint (broken?)\n"
+ "";
+
+static void
+bpt_cmds(void)
+{
+ int cmd;
+ unsigned long a;
+ int mode, i;
+ struct bpt *bp;
+ struct tbtable tab;
+
+ cmd = inchar();
+ switch (cmd) {
+ case 'd': /* bd - hardware data breakpoint */
+ if (__is_processor(PV_POWER4)) {
+ printf("Not implemented on POWER4\n");
+ break;
+ }
+ mode = 7;
+ cmd = inchar();
+ if (cmd == 'r')
+ mode = 5;
+ else if (cmd == 'w')
+ mode = 6;
+ else
+ termch = cmd;
+ dabr.address = 0;
+ dabr.count = 0;
+ dabr.enabled = scanhex(&dabr.address);
+ scanhex(&dabr.count);
+ if (dabr.enabled)
+ dabr.address = (dabr.address & ~7) | mode;
+ break;
+ case 'i': /* bi - hardware instr breakpoint */
+ if (__is_processor(PV_POWER4)) {
+ printf("Not implemented on POWER4\n");
+ break;
+ }
+ iabr.address = 0;
+ iabr.count = 0;
+ iabr.enabled = scanhex(&iabr.address);
+ if (iabr.enabled)
+ iabr.address |= 3;
+ scanhex(&iabr.count);
+ break;
+ case 'c':
+ if (!scanhex(&a)) {
+ /* clear all breakpoints */
+ for (i = 0; i < NBPTS; ++i)
+ bpts[i].enabled = 0;
+ iabr.enabled = 0;
+ dabr.enabled = 0;
+ printf("All breakpoints cleared\n");
+ } else {
+ if (a <= NBPTS && a >= 1) {
+ /* assume a breakpoint number */
+ --a; /* bp nums are 1 based */
+ bp = &bpts[a];
+ } else {
+ /* assume a breakpoint address */
+ bp = at_breakpoint(a);
+ }
+ if (bp == 0) {
+ printf("No breakpoint at %x\n", a);
+ } else {
+ printf("Cleared breakpoint %x (%lx %s)\n", (bp - bpts)+1, bp->address, bp->funcname);
+ bp->enabled = 0;
+ }
+ }
+ break;
+ case '?':
+ printf(breakpoint_help_string);
+ break;
+ default:
+ termch = cmd;
+ cmd = skipbl();
+ if (cmd == '?') {
+ printf(breakpoint_help_string);
+ break;
+ }
+ termch = cmd;
+ if (!scanhex(&a)) {
+ /* print all breakpoints */
+ int bpnum;
+
+ printf(" type address count\n");
+ if (dabr.enabled) {
+ printf(" data %.16lx %8x [", dabr.address & ~7,
+ dabr.count);
+ if (dabr.address & 1)
+ printf("r");
+ if (dabr.address & 2)
+ printf("w");
+ printf("]\n");
+ }
+ if (iabr.enabled)
+ printf(" inst %.16lx %8x\n", iabr.address & ~3,
+ iabr.count);
+ for (bp = bpts, bpnum = 1; bp < &bpts[NBPTS]; ++bp, ++bpnum)
+ if (bp->enabled)
+ printf("%2x trap %.16lx %8x %s\n", bpnum, bp->address, bp->count, bp->funcname);
+ break;
+ }
+ bp = at_breakpoint(a);
+ if (bp == 0) {
+ for (bp = bpts; bp < &bpts[NBPTS]; ++bp)
+ if (!bp->enabled)
+ break;
+ if (bp >= &bpts[NBPTS]) {
+ printf("Sorry, no free breakpoints. Please clear one first.\n");
+ break;
+ }
+ }
+ bp->enabled = 1;
+ bp->address = a;
+ bp->count = 0;
+ scanhex(&bp->count);
+ /* Find the function name just once. */
+ bp->funcname[0] = '\0';
+ if (find_tb_table(bp->address, &tab) && tab.name[0]) {
+ /* Got a nice name for it. */
+ int delta = bp->address - tab.funcstart;
+ sprintf(bp->funcname, "%s+0x%x", tab.name, delta);
+ }
+ printf("Set breakpoint %2x trap %.16lx %8x %s\n", (bp-bpts)+1, bp->address, bp->count, bp->funcname);
+ break;
+ }
+}
+
+/* Very cheap human name for vector lookup. */
+static
+const char *getvecname(unsigned long vec)
+{
+ char *ret;
+ switch (vec) {
+ case 0x100: ret = "(System Reset)"; break;
+ case 0x200: ret = "(Machine Check)"; break;
+ case 0x300: ret = "(Data Access)"; break;
+ case 0x400: ret = "(Instruction Access)"; break;
+ case 0x500: ret = "(Hardware Interrupt)"; break;
+ case 0x600: ret = "(Alignment)"; break;
+ case 0x700: ret = "(Program Check)"; break;
+ case 0x800: ret = "(FPU Unavailable)"; break;
+ case 0x900: ret = "(Decrementer)"; break;
+ case 0xc00: ret = "(System Call)"; break;
+ case 0xd00: ret = "(Single Step)"; break;
+ case 0xf00: ret = "(Performance Monitor)"; break;
+ default: ret = "";
+ }
+ return ret;
+}
+
+static void
+backtrace(struct pt_regs *excp)
+{
+ unsigned long sp;
+ unsigned long lr;
+ unsigned long stack[3];
+ struct pt_regs regs;
+ struct tbtable tab;
+ int framecount;
+ char *funcname;
+ /* declare these as raw ptrs so we don't get func descriptors */
+ extern void *ret_from_except, *ret_from_syscall_1;
+
+ if (excp != NULL) {
+ lr = excp->link;
+ sp = excp->gpr[1];
+ } else {
+ /* Use care not to call any function before this point
+ so the saved lr has a chance of being good. */
+ asm volatile ("mflr %0" : "=r" (lr) :);
+ sp = getsp();
+ }
+ scanhex(&sp);
+ scannl();
+ for (framecount = 0;
+ sp != 0 && framecount < MAXFRAMECOUNT;
+ sp = stack[0], framecount++) {
+ if (mread(sp, stack, sizeof(stack)) != sizeof(stack))
+ break;
+#if 0
+ if (lr != 0) {
+ stack[2] = lr; /* fake out the first saved lr. It may not be saved yet. */
+ lr = 0;
+ }
+#endif
+ printf("%.16lx %.16lx", sp, stack[2]);
+ /* TAI -- for now only the ones cast to unsigned long will match.
+ * Need to test the rest...
+ */
+ if ((stack[2] == (unsigned long)ret_from_except &&
+ (funcname = "ret_from_except"))
+ || (stack[2] == (unsigned long)ret_from_syscall_1 &&
+ (funcname = "ret_from_syscall_1"))
+#if 0
+ || stack[2] == (unsigned) &ret_from_syscall_2
+ || stack[2] == (unsigned) &do_signal_ret
+#endif
+ ) {
+ printf(" %s\n", funcname);
+ if (mread(sp+112, ®s, sizeof(regs)) != sizeof(regs))
+ break;
+ printf("exception: %lx %s regs %lx\n", regs.trap, getvecname(regs.trap), sp+112);
+ printf(" %.16lx", regs.nip);
+ if ((regs.nip & 0xffffffff00000000UL) &&
+ find_tb_table(regs.nip, &tab)) {
+ int delta = regs.nip-tab.funcstart;
+ if (delta < 0)
+ printf(" <unknown code>");
+ else
+ printf(" %s+0x%x", tab.name, delta);
+ }
+ printf("\n");
+ if (regs.gpr[1] < sp) {
+ printf("<Stack drops into 32-bit userspace %.16lx>\n", regs.gpr[1]);
+ break;
+ }
+
+ sp = regs.gpr[1];
+ if (mread(sp, stack, sizeof(stack)) != sizeof(stack))
+ break;
+ } else {
+ if (stack[2] && find_tb_table(stack[2], &tab)) {
+ int delta = stack[2]-tab.funcstart;
+ if (delta < 0)
+ printf(" <unknown code>");
+ else
+ printf(" %s+0x%x", tab.name, delta);
+ }
+ printf("\n");
+ }
+ if (stack[0] && stack[0] <= sp) {
+ if ((stack[0] & 0xffffffff00000000UL) == 0)
+ printf("<Stack drops into 32-bit userspace %.16lx>\n", stack[0]);
+ else
+ printf("<Corrupt stack. Next backchain is %.16lx>\n", stack[0]);
+ break;
+ }
+ }
+ if (framecount >= MAXFRAMECOUNT)
+ printf("<Punt. Too many stack frames>\n");
+}
+
+int
+getsp()
+{
+ int x;
+
+ asm("mr %0,1" : "=r" (x) :);
+ return x;
+}
+
+spinlock_t exception_print_lock = SPIN_LOCK_UNLOCKED;
+
+void
+excprint(struct pt_regs *fp)
+{
+ struct task_struct *c;
+ struct tbtable tab;
+ unsigned long flags;
+
+ spin_lock_irqsave(&exception_print_lock, flags);
+
+#ifdef CONFIG_SMP
+ printf("cpu %d: ", smp_processor_id());
+#endif /* CONFIG_SMP */
+
+ printf("Vector: %lx %s at [%lx]\n", fp->trap, getvecname(fp->trap), fp);
+ printf(" pc: %lx", fp->nip);
+ if (find_tb_table(fp->nip, &tab) && tab.name[0]) {
+ /* Got a nice name for it */
+ int delta = fp->nip - tab.funcstart;
+ printf(" (%s+0x%x)", tab.name, delta);
+ }
+ printf("\n");
+ printf(" lr: %lx", fp->link);
+ if (find_tb_table(fp->link, &tab) && tab.name[0]) {
+ /* Got a nice name for it */
+ int delta = fp->link - tab.funcstart;
+ printf(" (%s+0x%x)", tab.name, delta);
+ }
+ printf("\n");
+ printf(" sp: %lx\n", fp->gpr[1]);
+ printf(" msr: %lx\n", fp->msr);
+
+ if (fp->trap == 0x300 || fp->trap == 0x600) {
+ printf(" dar: %lx\n", fp->dar);
+ printf(" dsisr: %lx\n", fp->dsisr);
+ }
+
+ /* XXX: need to copy current or we die. Why? */
+ c = current;
+ printf(" current = 0x%lx\n", c);
+ printf(" paca = 0x%lx\n", get_paca());
+ if (c) {
+ printf(" current = %lx, pid = %ld, comm = %s\n",
+ c, c->pid, c->comm);
+ }
+
+ spin_unlock_irqrestore(&exception_print_lock, flags);
+}
+
+void
+prregs(struct pt_regs *fp)
+{
+ int n;
+ unsigned long base;
+
+ if (scanhex((void *)&base))
+ fp = (struct pt_regs *) base;
+ for (n = 0; n < 16; ++n)
+ printf("R%.2ld = %.16lx R%.2ld = %.16lx\n", n, fp->gpr[n],
+ n+16, fp->gpr[n+16]);
+ printf("pc = %.16lx msr = %.16lx\nlr = %.16lx cr = %.16lx\n",
+ fp->nip, fp->msr, fp->link, fp->ccr);
+ printf("ctr = %.16lx xer = %.16lx trap = %8lx\n",
+ fp->ctr, fp->xer, fp->trap);
+}
+
+void
+cacheflush(void)
+{
+ int cmd;
+ unsigned long nflush;
+
+ cmd = inchar();
+ if (cmd != 'i')
+ termch = cmd;
+ scanhex((void *)&adrs);
+ if (termch != '\n')
+ termch = 0;
+ nflush = 1;
+ scanhex(&nflush);
+ nflush = (nflush + 31) / 32;
+ if (cmd != 'i') {
+ for (; nflush > 0; --nflush, adrs += 0x20)
+ cflush((void *) adrs);
+ } else {
+ for (; nflush > 0; --nflush, adrs += 0x20)
+ cinval((void *) adrs);
+ }
+}
+
+unsigned long
+read_spr(int n)
+{
+ unsigned int instrs[2];
+ unsigned long (*code)(void);
+ unsigned long opd[3];
+
+ instrs[0] = 0x7c6002a6 + ((n & 0x1F) << 16) + ((n & 0x3e0) << 6);
+ instrs[1] = 0x4e800020;
+ opd[0] = (unsigned long)instrs;
+ opd[1] = 0;
+ opd[2] = 0;
+ store_inst(instrs);
+ store_inst(instrs+1);
+ code = (unsigned long (*)(void)) opd;
+
+ return code();
+}
+
+void
+write_spr(int n, unsigned long val)
+{
+ unsigned int instrs[2];
+ unsigned long (*code)(unsigned long);
+ unsigned long opd[3];
+
+ instrs[0] = 0x7c6003a6 + ((n & 0x1F) << 16) + ((n & 0x3e0) << 6);
+ instrs[1] = 0x4e800020;
+ opd[0] = (unsigned long)instrs;
+ opd[1] = 0;
+ opd[2] = 0;
+ store_inst(instrs);
+ store_inst(instrs+1);
+ code = (unsigned long (*)(unsigned long)) opd;
+
+ code(val);
+}
+
+static unsigned long regno;
+extern char exc_prolog;
+extern char dec_exc;
+
+void
+print_sysmap(void)
+{
+ extern char *sysmap;
+ if ( sysmap )
+ printf("System.map: \n%s", sysmap);
+}
+
+void
+super_regs()
+{
+ int i, cmd;
+ unsigned long val;
+ struct paca_struct* ptrPaca = NULL;
+ struct ItLpPaca* ptrLpPaca = NULL;
+ struct ItLpRegSave* ptrLpRegSave = NULL;
+
+ cmd = skipbl();
+ if (cmd == '\n') {
+ unsigned long sp, toc;
+ asm("mr %0,1" : "=r" (sp) :);
+ asm("mr %0,2" : "=r" (toc) :);
+
+ printf("msr = %.16lx sprg0= %.16lx\n", get_msr(), get_sprg0());
+ printf("pvr = %.16lx sprg1= %.16lx\n", get_pvr(), get_sprg1());
+ printf("dec = %.16lx sprg2= %.16lx\n", get_dec(), get_sprg2());
+ printf("sp = %.16lx sprg3= %.16lx\n", sp, get_sprg3());
+ printf("toc = %.16lx dar = %.16lx\n", toc, get_dar());
+ printf("srr0 = %.16lx srr1 = %.16lx\n", get_srr0(), get_srr1());
+ printf("asr = %.16lx\n", mfasr());
+ for (i = 0; i < 8; ++i)
+ printf("sr%.2ld = %.16lx sr%.2ld = %.16lx\n", i, get_sr(i), i+8, get_sr(i+8));
+
+ // Dump out relevant Paca data areas.
+ printf("Paca: \n");
+ ptrPaca = get_paca();
+
+ printf(" Local Processor Control Area (LpPaca): \n");
+ ptrLpPaca = ptrPaca->xLpPacaPtr;
+ printf(" Saved Srr0=%.16lx Saved Srr1=%.16lx \n", ptrLpPaca->xSavedSrr0, ptrLpPaca->xSavedSrr1);
+ printf(" Saved Gpr3=%.16lx Saved Gpr4=%.16lx \n", ptrLpPaca->xSavedGpr3, ptrLpPaca->xSavedGpr4);
+ printf(" Saved Gpr5=%.16lx \n", ptrLpPaca->xSavedGpr5);
+
+ printf(" Local Processor Register Save Area (LpRegSave): \n");
+ ptrLpRegSave = ptrPaca->xLpRegSavePtr;
+ printf(" Saved Sprg0=%.16lx Saved Sprg1=%.16lx \n", ptrLpRegSave->xSPRG0, ptrLpRegSave->xSPRG0);
+ printf(" Saved Sprg2=%.16lx Saved Sprg3=%.16lx \n", ptrLpRegSave->xSPRG2, ptrLpRegSave->xSPRG3);
+ printf(" Saved Msr =%.16lx Saved Nia =%.16lx \n", ptrLpRegSave->xMSR, ptrLpRegSave->xNIA);
+
+ return;
+ }
+
+ scanhex(®no);
+ switch (cmd) {
+ case 'w':
+ val = read_spr(regno);
+ scanhex(&val);
+ write_spr(regno, val);
+ /* fall through */
+ case 'r':
+ printf("spr %lx = %lx\n", regno, read_spr(regno));
+ break;
+ case 's':
+ val = get_sr(regno);
+ scanhex(&val);
+ set_sr(regno, val);
+ break;
+ case 'm':
+ val = get_msr();
+ scanhex(&val);
+ set_msrd(val);
+ break;
+ }
+ scannl();
+}
+
+#if 0
+static void
+openforth()
+{
+ int c;
+ char *p;
+ char cmd[1024];
+ int args[5];
+ extern int (*prom_entry)(int *);
+
+ p = cmd;
+ c = skipbl();
+ while (c != '\n') {
+ *p++ = c;
+ c = inchar();
+ }
+ *p = 0;
+ args[0] = (int) "interpret";
+ args[1] = 1;
+ args[2] = 1;
+ args[3] = (int) cmd;
+ (*prom_entry)(args);
+ printf("\n");
+ if (args[4] != 0)
+ printf("error %x\n", args[4]);
+}
+#endif
+
+#ifndef CONFIG_PPC64BRIDGE
+static void
+dump_hash_table_seg(unsigned seg, unsigned start, unsigned end)
+{
+ extern void *Hash;
+ extern unsigned long Hash_size;
+ unsigned *htab = Hash;
+ unsigned hsize = Hash_size;
+ unsigned v, hmask, va, last_va;
+ int found, last_found, i;
+ unsigned *hg, w1, last_w2, last_va0;
+
+ last_found = 0;
+ hmask = hsize / 64 - 1;
+ va = start;
+ start = (start >> 12) & 0xffff;
+ end = (end >> 12) & 0xffff;
+ for (v = start; v < end; ++v) {
+ found = 0;
+ hg = htab + (((v ^ seg) & hmask) * 16);
+ w1 = 0x80000000 | (seg << 7) | (v >> 10);
+ for (i = 0; i < 8; ++i, hg += 2) {
+ if (*hg == w1) {
+ found = 1;
+ break;
+ }
+ }
+ if (!found) {
+ w1 ^= 0x40;
+ hg = htab + ((~(v ^ seg) & hmask) * 16);
+ for (i = 0; i < 8; ++i, hg += 2) {
+ if (*hg == w1) {
+ found = 1;
+ break;
+ }
+ }
+ }
+ if (!(last_found && found && (hg[1] & ~0x180) == last_w2 + 4096)) {
+ if (last_found) {
+ if (last_va != last_va0)
+ printf(" ... %x", last_va);
+ printf("\n");
+ }
+ if (found) {
+ printf("%x to %x", va, hg[1]);
+ last_va0 = va;
+ }
+ last_found = found;
+ }
+ if (found) {
+ last_w2 = hg[1] & ~0x180;
+ last_va = va;
+ }
+ va += 4096;
+ }
+ if (last_found)
+ printf(" ... %x\n", last_va);
+}
+
+#else /* CONFIG_PPC64BRIDGE */
+static void
+dump_hash_table_seg(unsigned seg, unsigned start, unsigned end)
+{
+ extern void *Hash;
+ extern unsigned long Hash_size;
+ unsigned *htab = Hash;
+ unsigned hsize = Hash_size;
+ unsigned v, hmask, va, last_va;
+ int found, last_found, i;
+ unsigned *hg, w1, last_w2, last_va0;
+
+ last_found = 0;
+ hmask = hsize / 128 - 1;
+ va = start;
+ start = (start >> 12) & 0xffff;
+ end = (end >> 12) & 0xffff;
+ for (v = start; v < end; ++v) {
+ found = 0;
+ hg = htab + (((v ^ seg) & hmask) * 32);
+ w1 = 1 | (seg << 12) | ((v & 0xf800) >> 4);
+ for (i = 0; i < 8; ++i, hg += 4) {
+ if (hg[1] == w1) {
+ found = 1;
+ break;
+ }
+ }
+ if (!found) {
+ w1 ^= 2;
+ hg = htab + ((~(v ^ seg) & hmask) * 32);
+ for (i = 0; i < 8; ++i, hg += 4) {
+ if (hg[1] == w1) {
+ found = 1;
+ break;
+ }
+ }
+ }
+ if (!(last_found && found && (hg[3] & ~0x180) == last_w2 + 4096)) {
+ if (last_found) {
+ if (last_va != last_va0)
+ printf(" ... %x", last_va);
+ printf("\n");
+ }
+ if (found) {
+ printf("%x to %x", va, hg[3]);
+ last_va0 = va;
+ }
+ last_found = found;
+ }
+ if (found) {
+ last_w2 = hg[3] & ~0x180;
+ last_va = va;
+ }
+ va += 4096;
+ }
+ if (last_found)
+ printf(" ... %x\n", last_va);
+}
+#endif /* CONFIG_PPC64BRIDGE */
+
+static unsigned long hash_ctx;
+static unsigned long hash_start;
+static unsigned long hash_end;
+
+static void
+dump_hash_table()
+{
+ int seg;
+ unsigned seg_start, seg_end;
+
+ hash_ctx = 0;
+ hash_start = 0;
+ hash_end = 0xfffff000;
+ scanhex(&hash_ctx);
+ scanhex(&hash_start);
+ scanhex(&hash_end);
+ printf("Mappings for context %x\n", hash_ctx);
+ seg_start = hash_start;
+ for (seg = hash_start >> 28; seg <= hash_end >> 28; ++seg) {
+ seg_end = (seg << 28) | 0x0ffff000;
+ if (seg_end > hash_end)
+ seg_end = hash_end;
+ dump_hash_table_seg((hash_ctx << 4) + seg, seg_start, seg_end);
+ seg_start = seg_end + 0x1000;
+ }
+}
+
+int
+mread(unsigned long adrs, void *buf, int size)
+{
+ volatile int n;
+ char *p, *q;
+
+ n = 0;
+ if( setjmp(bus_error_jmp) == 0 ){
+ debugger_fault_handler = handle_fault;
+ sync();
+ p = (char *) adrs;
+ q = (char *) buf;
+ switch (size) {
+ case 2: *(short *)q = *(short *)p; break;
+ case 4: *(int *)q = *(int *)p; break;
+ default:
+ for( ; n < size; ++n ) {
+ *q++ = *p++;
+ sync();
+ }
+ }
+ sync();
+ /* wait a little while to see if we get a machine check */
+ __delay(200);
+ n = size;
+ }
+ debugger_fault_handler = 0;
+ return n;
+}
+
+int
+mwrite(unsigned long adrs, void *buf, int size)
+{
+ volatile int n;
+ char *p, *q;
+
+ n = 0;
+ if( setjmp(bus_error_jmp) == 0 ){
+ debugger_fault_handler = handle_fault;
+ sync();
+ p = (char *) adrs;
+ q = (char *) buf;
+ switch (size) {
+ case 2: *(short *)p = *(short *)q; break;
+ case 4: *(int *)p = *(int *)q; break;
+ default:
+ for( ; n < size; ++n ) {
+ *p++ = *q++;
+ sync();
+ }
+ }
+ sync();
+ /* wait a little while to see if we get a machine check */
+ __delay(200);
+ n = size;
+ } else {
+ printf("*** Error writing address %x\n", adrs + n);
+ }
+ debugger_fault_handler = 0;
+ return n;
+}
+
+static int fault_type;
+static char *fault_chars[] = { "--", "**", "##" };
+
+static void
+handle_fault(struct pt_regs *regs)
+{
+ fault_type = regs->trap == 0x200? 0: regs->trap == 0x300? 1: 2;
+ longjmp(bus_error_jmp, 1);
+}
+
+#define SWAP(a, b, t) ((t) = (a), (a) = (b), (b) = (t))
+
+void
+byterev(unsigned char *val, int size)
+{
+ int t;
+
+ switch (size) {
+ case 2:
+ SWAP(val[0], val[1], t);
+ break;
+ case 4:
+ SWAP(val[0], val[3], t);
+ SWAP(val[1], val[2], t);
+ break;
+ case 8: /* is there really any use for this? */
+ SWAP(val[0], val[7], t);
+ SWAP(val[1], val[6], t);
+ SWAP(val[2], val[5], t);
+ SWAP(val[3], val[4], t);
+ break;
+ }
+}
+
+static int brev;
+static int mnoread;
+
+static char *memex_help_string =
+ "Memory examine command usage:\n"
+ "m [addr] [flags] examine/change memory\n"
+ " addr is optional. will start where left off.\n"
+ " flags may include chars from this set:\n"
+ " b modify by bytes (default)\n"
+ " w modify by words (2 byte)\n"
+ " l modify by longs (4 byte)\n"
+ " d modify by doubleword (8 byte)\n"
+ " r toggle reverse byte order mode\n"
+ " n do not read memory (for i/o spaces)\n"
+ " . ok to read (default)\n"
+ "NOTE: flags are saved as defaults\n"
+ "";
+
+static char *memex_subcmd_help_string =
+ "Memory examine subcommands:\n"
+ " hexval write this val to current location\n"
+ " 'string' write chars from string to this location\n"
+ " ' increment address\n"
+ " ^ decrement address\n"
+ " / increment addr by 0x10. //=0x100, ///=0x1000, etc\n"
+ " \\ decrement addr by 0x10. \\\\=0x100, \\\\\\=0x1000, etc\n"
+ " ` clear no-read flag\n"
+ " ; stay at this addr\n"
+ " v change to byte mode\n"
+ " w change to word (2 byte) mode\n"
+ " l change to long (4 byte) mode\n"
+ " u change to doubleword (8 byte) mode\n"
+ " m addr change current addr\n"
+ " n toggle no-read flag\n"
+ " r toggle byte reverse flag\n"
+ " < count back up count bytes\n"
+ " > count skip forward count bytes\n"
+ " x exit this mode\n"
+ "";
+
+void
+memex()
+{
+ int cmd, inc, i, nslash;
+ unsigned long n;
+ unsigned char val[16];
+
+ scanhex((void *)&adrs);
+ cmd = skipbl();
+ if (cmd == '?') {
+ printf(memex_help_string);
+ return;
+ } else {
+ termch = cmd;
+ }
+ last_cmd = "m\n";
+ while ((cmd = skipbl()) != '\n') {
+ switch( cmd ){
+ case 'b': size = 1; break;
+ case 'w': size = 2; break;
+ case 'l': size = 4; break;
+ case 'd': size = 8; break;
+ case 'r': brev = !brev; break;
+ case 'n': mnoread = 1; break;
+ case '.': mnoread = 0; break;
+ }
+ }
+ if( size <= 0 )
+ size = 1;
+ else if( size > 8 )
+ size = 8;
+ for(;;){
+ if (!mnoread)
+ n = mread(adrs, val, size);
+ printf("%.16x%c", adrs, brev? 'r': ' ');
+ if (!mnoread) {
+ if (brev)
+ byterev(val, size);
+ putchar(' ');
+ for (i = 0; i < n; ++i)
+ printf("%.2x", val[i]);
+ for (; i < size; ++i)
+ printf("%s", fault_chars[fault_type]);
+ }
+ putchar(' ');
+ inc = size;
+ nslash = 0;
+ for(;;){
+ if( scanhex(&n) ){
+ for (i = 0; i < size; ++i)
+ val[i] = n >> (i * 8);
+ if (!brev)
+ byterev(val, size);
+ mwrite(adrs, val, size);
+ inc = size;
+ }
+ cmd = skipbl();
+ if (cmd == '\n')
+ break;
+ inc = 0;
+ switch (cmd) {
+ case '\'':
+ for(;;){
+ n = inchar();
+ if( n == '\\' )
+ n = bsesc();
+ else if( n == '\'' )
+ break;
+ for (i = 0; i < size; ++i)
+ val[i] = n >> (i * 8);
+ if (!brev)
+ byterev(val, size);
+ mwrite(adrs, val, size);
+ adrs += size;
+ }
+ adrs -= size;
+ inc = size;
+ break;
+ case ',':
+ adrs += size;
+ break;
+ case '.':
+ mnoread = 0;
+ break;
+ case ';':
+ break;
+ case 'x':
+ case EOF:
+ scannl();
+ return;
+ case 'b':
+ case 'v':
+ size = 1;
+ break;
+ case 'w':
+ size = 2;
+ break;
+ case 'l':
+ size = 4;
+ break;
+ case 'u':
+ size = 8;
+ break;
+ case '^':
+ adrs -= size;
+ break;
+ break;
+ case '/':
+ if (nslash > 0)
+ adrs -= 1 << nslash;
+ else
+ nslash = 0;
+ nslash += 4;
+ adrs += 1 << nslash;
+ break;
+ case '\\':
+ if (nslash < 0)
+ adrs += 1 << -nslash;
+ else
+ nslash = 0;
+ nslash -= 4;
+ adrs -= 1 << -nslash;
+ break;
+ case 'm':
+ scanhex((void *)&adrs);
+ break;
+ case 'n':
+ mnoread = 1;
+ break;
+ case 'r':
+ brev = !brev;
+ break;
+ case '<':
+ n = size;
+ scanhex(&n);
+ adrs -= n;
+ break;
+ case '>':
+ n = size;
+ scanhex(&n);
+ adrs += n;
+ break;
+ case '?':
+ printf(memex_subcmd_help_string);
+ break;
+ }
+ }
+ adrs += inc;
+ }
+}
+
+int
+bsesc()
+{
+ int c;
+
+ c = inchar();
+ switch( c ){
+ case 'n': c = '\n'; break;
+ case 'r': c = '\r'; break;
+ case 'b': c = '\b'; break;
+ case 't': c = '\t'; break;
+ }
+ return c;
+}
+
+#define isxdigit(c) (('0' <= (c) && (c) <= '9') \
+ || ('a' <= (c) && (c) <= 'f') \
+ || ('A' <= (c) && (c) <= 'F'))
+void
+dump()
+{
+ int c;
+
+ c = inchar();
+ if ((isxdigit(c) && c != 'f' && c != 'd') || c == '\n')
+ termch = c;
+ scanhex((void *)&adrs);
+ if( termch != '\n')
+ termch = 0;
+ if( c == 'i' ){
+ scanhex(&nidump);
+ if( nidump == 0 )
+ nidump = 16;
+ adrs += ppc_inst_dump(adrs, nidump);
+ last_cmd = "di\n";
+ } else {
+ scanhex(&ndump);
+ if( ndump == 0 )
+ ndump = 64;
+ prdump(adrs, ndump);
+ adrs += ndump;
+ last_cmd = "d\n";
+ }
+}
+
+void
+prdump(unsigned long adrs, long ndump)
+{
+ long n, m, c, r, nr;
+ unsigned char temp[16];
+
+ for( n = ndump; n > 0; ){
+ printf("%.16lx", adrs);
+ putchar(' ');
+ r = n < 16? n: 16;
+ nr = mread(adrs, temp, r);
+ adrs += nr;
+ for( m = 0; m < r; ++m ){
+ if ((m & 7) == 0 && m > 0)
+ putchar(' ');
+ if( m < nr )
+ printf("%.2x", temp[m]);
+ else
+ printf("%s", fault_chars[fault_type]);
+ }
+ for(; m < 16; ++m )
+ printf(" ");
+ printf(" |");
+ for( m = 0; m < r; ++m ){
+ if( m < nr ){
+ c = temp[m];
+ putchar(' ' <= c && c <= '~'? c: '.');
+ } else
+ putchar(' ');
+ }
+ n -= r;
+ for(; m < 16; ++m )
+ putchar(' ');
+ printf("|\n");
+ if( nr < r )
+ break;
+ }
+}
+
+int
+ppc_inst_dump(unsigned long adr, long count)
+{
+ int nr, dotted;
+ unsigned long first_adr;
+ unsigned long inst, last_inst;
+ unsigned char val[4];
+
+ dotted = 0;
+ for (first_adr = adr; count > 0; --count, adr += 4){
+ nr = mread(adr, val, 4);
+ if( nr == 0 ){
+ const char *x = fault_chars[fault_type];
+ printf("%.16lx %s%s%s%s\n", adr, x, x, x, x);
+ break;
+ }
+ inst = GETWORD(val);
+ if (adr > first_adr && inst == last_inst) {
+ if (!dotted) {
+ printf(" ...\n");
+ dotted = 1;
+ }
+ continue;
+ }
+ dotted = 0;
+ last_inst = inst;
+ printf("%.16lx ", adr);
+ printf("%.8x\t", inst);
+ print_insn_big_powerpc(stdout, inst, adr); /* always returns 4 */
+ printf("\n");
+ }
+ return adr - first_adr;
+}
+
+void
+print_address(unsigned long addr)
+{
+ printf("0x%lx", addr);
+}
+
+/*
+ * Memory operations - move, set, print differences
+ */
+static unsigned long mdest; /* destination address */
+static unsigned long msrc; /* source address */
+static unsigned long mval; /* byte value to set memory to */
+static unsigned long mcount; /* # bytes to affect */
+static unsigned long mdiffs; /* max # differences to print */
+
+void
+memops(int cmd)
+{
+ scanhex((void *)&mdest);
+ if( termch != '\n' )
+ termch = 0;
+ scanhex((void *)(cmd == 's'? &mval: &msrc));
+ if( termch != '\n' )
+ termch = 0;
+ scanhex((void *)&mcount);
+ switch( cmd ){
+ case 'm':
+ memmove((void *)mdest, (void *)msrc, mcount);
+ break;
+ case 's':
+ memset((void *)mdest, mval, mcount);
+ break;
+ case 'd':
+ if( termch != '\n' )
+ termch = 0;
+ scanhex((void *)&mdiffs);
+ memdiffs((unsigned char *)mdest, (unsigned char *)msrc, mcount, mdiffs);
+ break;
+ }
+}
+
+void
+memdiffs(unsigned char *p1, unsigned char *p2, unsigned nb, unsigned maxpr)
+{
+ unsigned n, prt;
+
+ prt = 0;
+ for( n = nb; n > 0; --n )
+ if( *p1++ != *p2++ )
+ if( ++prt <= maxpr )
+ printf("%.16x %.2x # %.16x %.2x\n", p1 - 1,
+ p1[-1], p2 - 1, p2[-1]);
+ if( prt > maxpr )
+ printf("Total of %d differences\n", prt);
+}
+
+static unsigned mend;
+static unsigned mask;
+
+void
+memlocate()
+{
+ unsigned a, n;
+ unsigned char val[4];
+
+ last_cmd = "ml";
+ scanhex((void *)&mdest);
+ if (termch != '\n') {
+ termch = 0;
+ scanhex((void *)&mend);
+ if (termch != '\n') {
+ termch = 0;
+ scanhex((void *)&mval);
+ mask = ~0;
+ if (termch != '\n') termch = 0;
+ scanhex((void *)&mask);
+ }
+ }
+ n = 0;
+ for (a = mdest; a < mend; a += 4) {
+ if (mread(a, val, 4) == 4
+ && ((GETWORD(val) ^ mval) & mask) == 0) {
+ printf("%.16x: %.16x\n", a, GETWORD(val));
+ if (++n >= 10)
+ break;
+ }
+ }
+}
+
+static unsigned long mskip = 0x1000;
+static unsigned long mlim = 0xffffffff;
+
+void
+memzcan()
+{
+ unsigned char v;
+ unsigned a;
+ int ok, ook;
+
+ scanhex(&mdest);
+ if (termch != '\n') termch = 0;
+ scanhex(&mskip);
+ if (termch != '\n') termch = 0;
+ scanhex(&mlim);
+ ook = 0;
+ for (a = mdest; a < mlim; a += mskip) {
+ ok = mread(a, &v, 1);
+ if (ok && !ook) {
+ printf("%.8x .. ", a);
+ fflush(stdout);
+ } else if (!ok && ook)
+ printf("%.8x\n", a - mskip);
+ ook = ok;
+ if (a + mskip < a)
+ break;
+ }
+ if (ook)
+ printf("%.8x\n", a - mskip);
+}
+
+/* Input scanning routines */
+int
+skipbl()
+{
+ int c;
+
+ if( termch != 0 ){
+ c = termch;
+ termch = 0;
+ } else
+ c = inchar();
+ while( c == ' ' || c == '\t' )
+ c = inchar();
+ return c;
+}
+
+int
+scanhex(vp)
+unsigned long *vp;
+{
+ int c, d;
+ unsigned long v;
+
+ c = skipbl();
+ d = hexdigit(c);
+ if( d == EOF ){
+ termch = c;
+ return 0;
+ }
+ v = 0;
+ do {
+ v = (v << 4) + d;
+ c = inchar();
+ d = hexdigit(c);
+ } while( d != EOF );
+ termch = c;
+ *vp = v;
+ return 1;
+}
+
+void
+scannl()
+{
+ int c;
+
+ c = termch;
+ termch = 0;
+ while( c != '\n' )
+ c = inchar();
+}
+
+int
+hexdigit(int c)
+{
+ if( '0' <= c && c <= '9' )
+ return c - '0';
+ if( 'A' <= c && c <= 'F' )
+ return c - ('A' - 10);
+ if( 'a' <= c && c <= 'f' )
+ return c - ('a' - 10);
+ return EOF;
+}
+
+void
+getstring(char *s, int size)
+{
+ int c;
+
+ c = skipbl();
+ do {
+ if( size > 1 ){
+ *s++ = c;
+ --size;
+ }
+ c = inchar();
+ } while( c != ' ' && c != '\t' && c != '\n' );
+ termch = c;
+ *s = 0;
+}
+
+static char line[256];
+static char *lineptr;
+
+void
+flush_input()
+{
+ lineptr = NULL;
+}
+
+int
+inchar()
+{
+ if (lineptr == NULL || *lineptr == 0) {
+ if (fgets(line, sizeof(line), stdin) == NULL) {
+ lineptr = NULL;
+ return EOF;
+ }
+ lineptr = line;
+ }
+ return *lineptr++;
+}
+
+void
+take_input(str)
+char *str;
+{
+ lineptr = str;
+}
+
+
+/* Starting at codeaddr scan forward for a tbtable and fill in the
+ given table. Return non-zero if successful at doing something.
+ */
+static int
+find_tb_table(unsigned long codeaddr, struct tbtable *tab)
+{
+ unsigned long codeaddr_max;
+ unsigned long tbtab_start;
+ int nr;
+ int instr;
+ int num_parms;
+
+ if (tab == NULL)
+ return 0;
+ memset(tab, 0, sizeof(tab));
+
+ /* Scan instructions starting at codeaddr for 128k max */
+ for (codeaddr_max = codeaddr + 128*1024*4;
+ codeaddr < codeaddr_max;
+ codeaddr += 4) {
+ nr = mread(codeaddr, &instr, 4);
+ if (nr != 4)
+ return 0; /* Bad read. Give up promptly. */
+ if (instr == 0) {
+ /* table should follow. */
+ int version;
+ unsigned long flags;
+ tbtab_start = codeaddr; /* save it to compute func start addr */
+ codeaddr += 4;
+ nr = mread(codeaddr, &flags, 8);
+ if (nr != 8)
+ return 0; /* Bad read or no tb table. */
+ tab->flags = flags;
+ version = (flags >> 56) & 0xff;
+ if (version != 0)
+ continue; /* No tb table here. */
+ /* Now, like the version, some of the flags are values
+ that are more conveniently extracted... */
+ tab->fp_saved = (flags >> 24) & 0x3f;
+ tab->gpr_saved = (flags >> 16) & 0x3f;
+ tab->fixedparms = (flags >> 8) & 0xff;
+ tab->floatparms = (flags >> 1) & 0x7f;
+ codeaddr += 8;
+ num_parms = tab->fixedparms + tab->floatparms;
+ if (num_parms) {
+ unsigned int parminfo;
+ int parm;
+ if (num_parms > 32)
+ return 1; /* incomplete */
+ nr = mread(codeaddr, &parminfo, 4);
+ if (nr != 4)
+ return 1; /* incomplete */
+ /* decode parminfo...32 bits.
+ A zero means fixed. A one means float and the
+ following bit determines single (0) or double (1).
+ */
+ for (parm = 0; parm < num_parms; parm++) {
+ if (parminfo & 0x80000000) {
+ parminfo <<= 1;
+ if (parminfo & 0x80000000)
+ tab->parminfo[parm] = TBTAB_PARMDFLOAT;
+ else
+ tab->parminfo[parm] = TBTAB_PARMSFLOAT;
+ } else {
+ tab->parminfo[parm] = TBTAB_PARMFIXED;
+ }
+ parminfo <<= 1;
+ }
+ codeaddr += 4;
+ }
+ if (flags & TBTAB_FLAGSHASTBOFF) {
+ nr = mread(codeaddr, &tab->tb_offset, 4);
+ if (nr != 4)
+ return 1; /* incomplete */
+ if (tab->tb_offset > 0) {
+ tab->funcstart = tbtab_start - tab->tb_offset;
+ }
+ codeaddr += 4;
+ }
+ /* hand_mask appears to be always be omitted. */
+ if (flags & TBTAB_FLAGSHASCTL) {
+ /* Assume this will never happen for C or asm */
+ return 1; /* incomplete */
+ }
+ if (flags & TBTAB_FLAGSNAMEPRESENT) {
+ short namlen;
+ nr = mread(codeaddr, &namlen, 2);
+ if (nr != 2)
+ return 1; /* incomplete */
+ if (namlen >= sizeof(tab->name))
+ namlen = sizeof(tab->name)-1;
+ codeaddr += 2;
+ nr = mread(codeaddr, tab->name, namlen);
+ tab->name[namlen] = '\0';
+ codeaddr += namlen;
+ }
+ return 1;
+ }
+ }
+ return 0; /* hit max...sorry. */
+}
+
+void
+mem_translate()
+{
+ int c;
+ unsigned long ea, va, vsid, vpn, page, hpteg_slot_primary, hpteg_slot_secondary, primary_hash, i, *steg, esid, stabl;
+ HPTE * hpte;
+ struct mm_struct * mm;
+ pte_t *ptep = NULL;
+ void * pgdir;
+
+ c = inchar();
+ if ((isxdigit(c) && c != 'f' && c != 'd') || c == '\n')
+ termch = c;
+ scanhex((void *)&ea);
+
+ if ((ea >= KRANGE_START) && (ea <= (KRANGE_START + (1UL<<60)))) {
+ ptep = 0;
+ vsid = get_kernel_vsid(ea);
+ va = ( vsid << 28 ) | ( ea & 0x0fffffff );
+ } else {
+ // if in vmalloc range, use the vmalloc page directory
+ if ( ( ea >= VMALLOC_START ) && ( ea <= VMALLOC_END ) ) {
+ mm = &init_mm;
+ vsid = get_kernel_vsid( ea );
+ }
+ // if in ioremap range, use the ioremap page directory
+ else if ( ( ea >= IMALLOC_START ) && ( ea <= IMALLOC_END ) ) {
+ mm = &ioremap_mm;
+ vsid = get_kernel_vsid( ea );
+ }
+ // if in user range, use the current task's page directory
+ else if ( ( ea >= USER_START ) && ( ea <= USER_END ) ) {
+ mm = current->mm;
+ vsid = get_vsid(mm->context, ea );
+ }
+ pgdir = mm->pgd;
+ va = ( vsid << 28 ) | ( ea & 0x0fffffff );
+ ptep = find_linux_pte( pgdir, ea );
+ }
+
+ vpn = ((vsid << 28) | (((ea) & 0xFFFF000))) >> 12;
+ page = vpn & 0xffff;
+ esid = (ea >> 28) & 0xFFFFFFFFF;
+
+ // Search the primary group for an available slot
+ primary_hash = ( vsid & 0x7fffffffff ) ^ page;
+ hpteg_slot_primary = ( primary_hash & htab_data.htab_hash_mask ) * HPTES_PER_GROUP;
+ hpteg_slot_secondary = ( ~primary_hash & htab_data.htab_hash_mask ) * HPTES_PER_GROUP;
+
+ printf("ea : %.16lx\n", ea);
+ printf("esid : %.16lx\n", esid);
+ printf("vsid : %.16lx\n", vsid);
+
+ printf("\nSoftware Page Table\n-------------------\n");
+ printf("ptep : %.16lx\n", ((unsigned long *)ptep));
+ if(ptep) {
+ printf("*ptep : %.16lx\n", *((unsigned long *)ptep));
+ }
+
+ hpte = htab_data.htab + hpteg_slot_primary;
+ printf("\nHardware Page Table\n-------------------\n");
+ printf("htab base : %.16lx\n", htab_data.htab);
+ printf("slot primary : %.16lx\n", hpteg_slot_primary);
+ printf("slot secondary : %.16lx\n", hpteg_slot_secondary);
+ printf("\nPrimary Group\n");
+ for (i=0; i<8; ++i) {
+ if ( hpte->dw0.dw0.v != 0 ) {
+ printf("%d: (hpte)%.16lx %.16lx\n", i, hpte->dw0.dword0, hpte->dw1.dword1);
+ printf(" vsid: %.13lx api: %.2lx hash: %.1lx\n",
+ (hpte->dw0.dw0.avpn)>>5,
+ (hpte->dw0.dw0.avpn) & 0x1f,
+ (hpte->dw0.dw0.h));
+ printf(" rpn: %.13lx \n", (hpte->dw1.dw1.rpn));
+ printf(" pp: %.1lx \n",
+ ((hpte->dw1.dw1.pp0)<<2)|(hpte->dw1.dw1.pp));
+ printf(" wimgn: %.2lx reference: %.1lx change: %.1lx\n",
+ ((hpte->dw1.dw1.w)<<4)|
+ ((hpte->dw1.dw1.i)<<3)|
+ ((hpte->dw1.dw1.m)<<2)|
+ ((hpte->dw1.dw1.g)<<1)|
+ ((hpte->dw1.dw1.n)<<0),
+ hpte->dw1.dw1.r, hpte->dw1.dw1.c);
+ }
+ hpte++;
+ }
+
+ printf("\nSecondary Group\n");
+ // Search the secondary group
+ hpte = htab_data.htab + hpteg_slot_secondary;
+ for (i=0; i<8; ++i) {
+ if(hpte->dw0.dw0.v) {
+ printf("%d: (hpte)%.16lx %.16lx\n", i, hpte->dw0.dword0, hpte->dw1.dword1);
+ printf(" vsid: %.13lx api: %.2lx hash: %.1lx\n",
+ (hpte->dw0.dw0.avpn)>>5,
+ (hpte->dw0.dw0.avpn) & 0x1f,
+ (hpte->dw0.dw0.h));
+ printf(" rpn: %.13lx \n", (hpte->dw1.dw1.rpn));
+ printf(" pp: %.1lx \n",
+ ((hpte->dw1.dw1.pp0)<<2)|(hpte->dw1.dw1.pp));
+ printf(" wimgn: %.2lx reference: %.1lx change: %.1lx\n",
+ ((hpte->dw1.dw1.w)<<4)|
+ ((hpte->dw1.dw1.i)<<3)|
+ ((hpte->dw1.dw1.m)<<2)|
+ ((hpte->dw1.dw1.g)<<1)|
+ ((hpte->dw1.dw1.n)<<0),
+ hpte->dw1.dw1.r, hpte->dw1.dw1.c);
+ }
+ hpte++;
+ }
+
+ printf("\nHardware Segment Table\n-----------------------\n");
+ stabl = (unsigned long)(KERNELBASE+(_ASR&0xFFFFFFFFFFFFFFFE));
+ steg = (unsigned long *)((stabl) | ((esid & 0x1f) << 7));
+
+ printf("stab base : %.16lx\n", stabl);
+ printf("slot : %.16lx\n", steg);
+
+ for (i=0; i<8; ++i) {
+ printf("%d: (ste) %.16lx %.16lx\n", i,
+ *((unsigned long *)(steg+i*2)),*((unsigned long *)(steg+i*2+1)) );
+ }
+}
+
+void mem_check()
+{
+ unsigned long htab_size_bytes;
+ unsigned long htab_end;
+ unsigned long last_rpn;
+ HPTE *hpte1, *hpte2;
+
+ htab_size_bytes = htab_data.htab_num_ptegs * 128; // 128B / PTEG
+ htab_end = (unsigned long)htab_data.htab + htab_size_bytes;
+ // last_rpn = (naca->physicalMemorySize-1) >> PAGE_SHIFT;
+ last_rpn = 0xfffff;
+
+ printf("\nHardware Page Table Check\n-------------------\n");
+ printf("htab base : %.16lx\n", htab_data.htab);
+ printf("htab size : %.16lx\n", htab_size_bytes);
+
+#if 1
+ for(hpte1 = htab_data.htab; hpte1 < (HPTE *)htab_end; hpte1++) {
+ if ( hpte1->dw0.dw0.v != 0 ) {
+ if ( hpte1->dw1.dw1.rpn <= last_rpn ) {
+ for(hpte2 = hpte1+1; hpte2 < (HPTE *)htab_end; hpte2++) {
+ if ( hpte2->dw0.dw0.v != 0 ) {
+ if(hpte1->dw1.dw1.rpn == hpte2->dw1.dw1.rpn) {
+ printf(" Duplicate rpn: %.13lx \n", (hpte1->dw1.dw1.rpn));
+ printf(" hpte1: %16.16lx *hpte1: %16.16lx %16.16lx\n",
+ hpte1, hpte1->dw0.dword0, hpte1->dw1.dword1);
+ printf(" hpte2: %16.16lx *hpte2: %16.16lx %16.16lx\n",
+ hpte2, hpte2->dw0.dword0, hpte2->dw1.dword1);
+ }
+ }
+ }
+ } else {
+ printf(" Bogus rpn: %.13lx \n", (hpte1->dw1.dw1.rpn));
+ printf(" hpte: %16.16lx *hpte: %16.16lx %16.16lx\n",
+ hpte1, hpte1->dw0.dword0, hpte1->dw1.dword1);
+ }
+ }
+ }
+#endif
+ printf("\nDone -------------------\n");
+}
+
+void mem_find_real()
+{
+ unsigned long htab_size_bytes;
+ unsigned long htab_end;
+ unsigned long last_rpn;
+ HPTE *hpte1;
+ unsigned long pa, rpn;
+ int c;
+
+ c = inchar();
+ if ((isxdigit(c) && c != 'f' && c != 'd') || c == '\n')
+ termch = c;
+ scanhex((void *)&pa);
+ rpn = pa >> 12;
+
+ htab_size_bytes = htab_data.htab_num_ptegs * 128; // 128B / PTEG
+ htab_end = (unsigned long)htab_data.htab + htab_size_bytes;
+ // last_rpn = (naca->physicalMemorySize-1) >> PAGE_SHIFT;
+ last_rpn = 0xfffff;
+
+ printf("\nMem Find RPN\n-------------------\n");
+ printf("htab base : %.16lx\n", htab_data.htab);
+ printf("htab size : %.16lx\n", htab_size_bytes);
+
+ for(hpte1 = htab_data.htab; hpte1 < (HPTE *)htab_end; hpte1++) {
+ if ( hpte1->dw0.dw0.v != 0 ) {
+ if ( hpte1->dw1.dw1.rpn == rpn ) {
+ printf(" Found rpn: %.13lx \n", (hpte1->dw1.dw1.rpn));
+ printf(" hpte: %16.16lx *hpte1: %16.16lx %16.16lx\n",
+ hpte1, hpte1->dw0.dword0, hpte1->dw1.dword1);
+ }
+ }
+ }
+ printf("\nDone -------------------\n");
+}
+
+void mem_find_vsid()
+{
+ unsigned long htab_size_bytes;
+ unsigned long htab_end;
+ HPTE *hpte1;
+ unsigned long vsid;
+ int c;
+
+ c = inchar();
+ if ((isxdigit(c) && c != 'f' && c != 'd') || c == '\n')
+ termch = c;
+ scanhex((void *)&vsid);
+
+ htab_size_bytes = htab_data.htab_num_ptegs * 128; // 128B / PTEG
+ htab_end = (unsigned long)htab_data.htab + htab_size_bytes;
+
+ printf("\nMem Find VSID\n-------------------\n");
+ printf("htab base : %.16lx\n", htab_data.htab);
+ printf("htab size : %.16lx\n", htab_size_bytes);
+
+ for(hpte1 = htab_data.htab; hpte1 < (HPTE *)htab_end; hpte1++) {
+ if ( hpte1->dw0.dw0.v != 0 ) {
+ if ( ((hpte1->dw0.dw0.avpn)>>5) == vsid ) {
+ printf(" Found vsid: %.16lx \n", ((hpte1->dw0.dw0.avpn) >> 5));
+ printf(" hpte: %16.16lx *hpte1: %16.16lx %16.16lx\n",
+ hpte1, hpte1->dw0.dword0, hpte1->dw1.dword1);
+ }
+ }
+ }
+ printf("\nDone -------------------\n");
+}
+
+void mem_map_check_slab()
+{
+ int i, slab_count;
+
+ i = max_mapnr;
+ slab_count = 0;
+
+ while (i-- > 0) {
+ if (PageSlab(mem_map+i)){
+ printf(" slab entry - mem_map entry =%p \n", mem_map+i);
+ slab_count ++;
+ }
+ }
+
+ printf(" count of pages for slab = %d \n", slab_count);
+}
+
+void mem_map_lock_pages()
+{
+ int i, lock_count;
+
+ i = max_mapnr;
+ lock_count = 0;
+
+ while (i-- > 0) {
+ if (PageLocked(mem_map+i)){
+ printf(" locked entry - mem_map entry =%p \n", mem_map+i);
+ lock_count ++;
+ }
+ }
+
+ printf(" count of locked pages = %d \n", lock_count);
+}
+
+
+
+void mem_map_check_hash()
+{
+ int i = max_mapnr;
+
+ while (i-- > 0) {
+ /* skip the reserved */
+ if (!PageReserved(mem_map+i)) {
+ if (((mem_map+i)->next_hash) != NULL) {
+ if ( REGION_ID((mem_map+i)->next_hash) != KERNEL_REGION_ID ) {
+ printf(" mem_map check hash - non c0 entry - "
+ "address/value = %p %lx\n", mem_map+i,(mem_map+i)->next_hash);
+ }
+ if ((unsigned long)((mem_map+i)->next_hash) == KERNELBASE){
+ printf(" mem_map check hash - 0x%lx entry = %p \n",
+ KERNELBASE, mem_map+i);
+ }
+ }
+ } else {
+ if (page_count(mem_map+i) < 0) {
+ printf(" reserved page with negative count- entry = %lx \n", mem_map+i);
+ }
+ }
+ }
+ printf(" mem_map check hash completed \n");
+}
+
+void mem_check_dup_rpn ()
+{
+ unsigned long htab_size_bytes;
+ unsigned long htab_end;
+ unsigned long last_rpn;
+ HPTE *hpte1, *hpte2;
+ int dup_count;
+ struct task_struct *p;
+ unsigned long kernel_vsid_c0,kernel_vsid_c1,kernel_vsid_c2,kernel_vsid_c3;
+ unsigned long kernel_vsid_c4,kernel_vsid_c5,kernel_vsid_d,kernel_vsid_e;
+ unsigned long kernel_vsid_f;
+ unsigned long vsid0,vsid1,vsidB,vsid2;
+
+ htab_size_bytes = htab_data.htab_num_ptegs * 128; // 128B / PTEG
+ htab_end = (unsigned long)htab_data.htab + htab_size_bytes;
+ // last_rpn = (naca->physicalMemorySize-1) >> PAGE_SHIFT;
+ last_rpn = 0xfffff;
+
+ printf("\nHardware Page Table Check\n-------------------\n");
+ printf("htab base : %.16lx\n", htab_data.htab);
+ printf("htab size : %.16lx\n", htab_size_bytes);
+
+
+ for(hpte1 = htab_data.htab; hpte1 < (HPTE *)htab_end; hpte1++) {
+ if ( hpte1->dw0.dw0.v != 0 ) {
+ if ( hpte1->dw1.dw1.rpn <= last_rpn ) {
+ dup_count = 0;
+ for(hpte2 = hpte1+1; hpte2 < (HPTE *)htab_end; hpte2++) {
+ if ( hpte2->dw0.dw0.v != 0 ) {
+ if(hpte1->dw1.dw1.rpn == hpte2->dw1.dw1.rpn) {
+ dup_count++;
+ }
+ }
+ }
+ if(dup_count > 5) {
+ printf(" Duplicate rpn: %.13lx \n", (hpte1->dw1.dw1.rpn));
+ printf(" mem map array entry %p count = %d \n",
+ (mem_map+(hpte1->dw1.dw1.rpn)), (mem_map+(hpte1->dw1.dw1.rpn))->count);
+ for(hpte2 = hpte1+1; hpte2 < (HPTE *)htab_end; hpte2++) {
+ if ( hpte2->dw0.dw0.v != 0 ) {
+ if(hpte1->dw1.dw1.rpn == hpte2->dw1.dw1.rpn) {
+ printf(" hpte2: %16.16lx *hpte2: %16.16lx %16.16lx\n",
+ hpte2, hpte2->dw0.dword0, hpte2->dw1.dword1);
+ }
+ }
+ }
+ }
+ } else {
+ printf(" Bogus rpn: %.13lx \n", (hpte1->dw1.dw1.rpn));
+ printf(" hpte: %16.16lx *hpte: %16.16lx %16.16lx\n",
+ hpte1, hpte1->dw0.dword0, hpte1->dw1.dword1);
+ }
+ }
+ if (xmon_interrupted())
+ return;
+ }
+
+
+
+ // print the kernel vsids
+ kernel_vsid_c0 = get_kernel_vsid(0xC000000000000000);
+ kernel_vsid_c1 = get_kernel_vsid(0xC000000010000000);
+ kernel_vsid_c2 = get_kernel_vsid(0xC000000020000000);
+ kernel_vsid_c3 = get_kernel_vsid(0xC000000030000000);
+ kernel_vsid_c4 = get_kernel_vsid(0xC000000040000000);
+ kernel_vsid_c5 = get_kernel_vsid(0xC000000050000000);
+ kernel_vsid_d = get_kernel_vsid(0xD000000000000000);
+ kernel_vsid_e = get_kernel_vsid(0xE000000000000000);
+ kernel_vsid_f = get_kernel_vsid(0xF000000000000000);
+
+ printf(" kernel vsid - seg c0 = %lx\n", kernel_vsid_c0 );
+ printf(" kernel vsid - seg c1 = %lx\n", kernel_vsid_c1 );
+ printf(" kernel vsid - seg c2 = %lx\n", kernel_vsid_c2 );
+ printf(" kernel vsid - seg c3 = %lx\n", kernel_vsid_c3 );
+ printf(" kernel vsid - seg c4 = %lx\n", kernel_vsid_c4 );
+ printf(" kernel vsid - seg c5 = %lx\n", kernel_vsid_c5 );
+ printf(" kernel vsid - seg d = %lx\n", kernel_vsid_d );
+ printf(" kernel vsid - seg e = %lx\n", kernel_vsid_e );
+ printf(" kernel vsid - seg f = %lx\n", kernel_vsid_f );
+
+
+ // print a list of valid vsids for the tasks
+ read_lock(&tasklist_lock);
+ for_each_task(p)
+ if(p->mm) {
+ struct mm_struct *mm = p->mm;
+ printf(" task = %p mm = %lx pgd %lx\n",
+ p, mm, mm->pgd);
+ vsid0 = get_vsid( mm->context, 0 );
+ vsid1 = get_vsid( mm->context, 0x10000000 );
+ vsid2 = get_vsid( mm->context, 0x20000000 );
+ vsidB = get_vsid( mm->context, 0xB0000000 );
+ printf(" context = %lx vsid seg 0 = %lx\n", mm->context, vsid0 );
+ printf(" vsid seg 1 = %lx\n", vsid1 );
+ printf(" vsid seg 2 = %lx\n", vsid2 );
+ printf(" vsid seg 2 = %lx\n", vsidB );
+
+ printf("\n");
+ };
+ read_unlock(&tasklist_lock);
+
+ printf("\nDone -------------------\n");
+}
+
+
+
+void mem_check_pagetable_vsids ()
+{
+ unsigned long htab_size_bytes;
+ unsigned long htab_end;
+ unsigned long last_rpn;
+ struct task_struct *p;
+ unsigned long valid_table_count,invalid_table_count,bogus_rpn_count;
+ int found;
+ unsigned long user_address_table_count,kernel_page_table_count;
+ unsigned long pt_vsid;
+ HPTE *hpte1;
+
+
+ htab_size_bytes = htab_data.htab_num_ptegs * 128; // 128B / PTEG
+ htab_end = (unsigned long)htab_data.htab + htab_size_bytes;
+ // last_rpn = (naca->physicalMemorySize-1) >> PAGE_SHIFT;
+ last_rpn = 0xfffff;
+
+ printf("\nHardware Page Table Check\n-------------------\n");
+ printf("htab base : %.16lx\n", htab_data.htab);
+ printf("htab size : %.16lx\n", htab_size_bytes);
+
+ valid_table_count = 0;
+ invalid_table_count = 0;
+ bogus_rpn_count = 0;
+ user_address_table_count = 0;
+ kernel_page_table_count = 0;
+ for(hpte1 = htab_data.htab; hpte1 < (HPTE *)htab_end; hpte1++) {
+ if ( hpte1->dw0.dw0.v != 0 ) {
+ valid_table_count++;
+ if ( hpte1->dw1.dw1.rpn <= last_rpn ) {
+ pt_vsid = (hpte1->dw0.dw0.avpn) >> 5;
+ if ((pt_vsid == get_kernel_vsid(0xC000000000000000)) |
+ (pt_vsid == get_kernel_vsid(0xC000000010000000)) |
+ (pt_vsid == get_kernel_vsid(0xC000000020000000)) |
+ (pt_vsid == get_kernel_vsid(0xC000000030000000)) |
+ (pt_vsid == get_kernel_vsid(0xC000000040000000)) |
+ (pt_vsid == get_kernel_vsid(0xC000000050000000)) |
+ (pt_vsid == get_kernel_vsid(0xD000000000000000)) |
+ (pt_vsid == get_kernel_vsid(0xE000000000000000)) |
+ (pt_vsid == get_kernel_vsid(0xF000000000000000)) ) {
+ kernel_page_table_count ++;
+ } else {
+ read_lock(&tasklist_lock);
+ found = 0;
+ for_each_task(p) {
+ if(p->mm && (found == 0)) {
+ struct mm_struct *mm = p->mm;
+
+ if ((pt_vsid == get_vsid( mm->context, 0 )) |
+ (pt_vsid == get_vsid( mm->context, 0x10000000 )) |
+ (pt_vsid == get_vsid( mm->context, 0x20000000 )) |
+ (pt_vsid == get_vsid( mm->context, 0x30000000 )) |
+ (pt_vsid == get_vsid( mm->context, 0x40000000 )) |
+ (pt_vsid == get_vsid( mm->context, 0x50000000 )) |
+ (pt_vsid == get_vsid( mm->context, 0x60000000 )) |
+ (pt_vsid == get_vsid( mm->context, 0x70000000 )) |
+ (pt_vsid == get_vsid( mm->context, 0x80000000 )) |
+ (pt_vsid == get_vsid( mm->context, 0x90000000 )) |
+ (pt_vsid == get_vsid( mm->context, 0xA0000000 )) |
+ (pt_vsid == get_vsid( mm->context, 0xB0000000 ))) {
+ user_address_table_count ++;
+ found = 1;
+ }
+ }
+ }
+ read_unlock(&tasklist_lock);
+ if (found == 0)
+ {
+ printf(" vsid not found vsid = %lx, hpte = %p \n",
+ pt_vsid,hpte1);
+ printf(" rpn in entry = %lx \n", hpte1->dw1.dw1.rpn);
+ printf(" mem map address = %lx \n", mem_map + (hpte1->dw1.dw1.rpn));
+
+ } else // found
+ {
+ }
+
+ } // good rpn
+
+ } else {
+ bogus_rpn_count ++;
+ }
+ } else {
+ invalid_table_count++;
+ }
+ }
+
+
+ printf(" page table valid counts - valid entries = %lx invalid entries = %lx \n",
+ valid_table_count, invalid_table_count);
+
+ printf(" bogus rpn entries ( probably io) = %lx \n", bogus_rpn_count);
+
+
+
+ printf(" page table counts - kernel entries = %lx user entries = %lx \n",
+ kernel_page_table_count, user_address_table_count);
+
+ printf("\nDone -------------------\n");
+
+}
+
+
+void mem_check_full_group()
+{
+ unsigned long htab_size_bytes;
+ unsigned count;
+ unsigned count_array[] = {0,0,0,0,0,0,0,0,0};
+ unsigned i;
+ unsigned long htab_end;
+ HPTE *hpte1, *hpte2, *hpte3;
+ u64 rpn = 0;
+
+ htab_size_bytes = htab_data.htab_num_ptegs * 128; // 128B / PTEG
+ htab_end = (unsigned long)htab_data.htab + htab_size_bytes;
+
+ printf("\nHardware Page Find full groups \n-------------------\n");
+ printf("htab base : %.16lx\n", htab_data.htab);
+ printf("htab size : %.16lx\n", htab_size_bytes);
+
+ for (hpte1 = htab_data.htab; (unsigned long)hpte1 < htab_end; hpte1= hpte1 + 8)
+ {
+ count = 0;
+ hpte2 = hpte1;
+ for (i=0; i<8; ++i)
+ {
+ if ( hpte2->dw0.dw0.v != 0 )
+ {
+ count++;
+ }
+ hpte2++;
+ }
+ if (count == 8 )
+ {
+ printf(" full group starting with entry %lx \n", hpte1);
+ hpte3 = hpte1;
+ for (i=0; i<8; ++i)
+ {
+ if ( hpte3->dw0.dw0.v != 0 )
+ {
+ printf(" entry number %d \n",i);
+ printf(" vsid: %.13lx api: %.2lx hash: %.1lx\n",
+ (hpte3->dw0.dw0.avpn)>>5,
+ (hpte3->dw0.dw0.avpn) & 0x1f,
+ (hpte3->dw0.dw0.h));
+ printf(" rpn: %.13lx \n", (hpte3->dw1.dw1.rpn));
+ // Dump out the memmap array entry address, corresponding virtual address, and reference count.
+ rpn = hpte3->dw1.dw1.rpn;
+ printf(" mem_map+rpn=%p, virtual@=%p, count=%lx \n", mem_map+rpn, (mem_map+rpn)->virtual, (mem_map+rpn)->count);
+ }
+ hpte3++;
+ }
+ if (xmon_interrupted())
+ return;
+ }
+
+ count_array[count]++;
+ }
+ for (i=1; i<9; ++i)
+ {
+ printf(" group count for size %i = %lx \n", i, count_array[i]);
+ }
+
+ printf("\nDone -------------------\n");
+}
+
+static void debug_trace(void) {
+ unsigned long val, cmd, on;
+
+ cmd = skipbl();
+ if (cmd == '\n') {
+ /* show current state */
+ unsigned long i;
+ printf("naca->debug_switch = 0x%lx\n", naca->debug_switch);
+ for (i = 0; i < PPCDBG_NUM_FLAGS ;i++) {
+ on = PPCDBG_BITVAL(i) & naca->debug_switch;
+ printf("%02x %s %12s ", i, on ? "on " : "off", trace_names[i] ? trace_names[i] : "");
+ if (((i+1) % 3) == 0)
+ printf("\n");
+ }
+ printf("\n");
+ return;
+ }
+ while (cmd != '\n') {
+ on = 1; /* default if no sign given */
+ while (cmd == '+' || cmd == '-') {
+ on = (cmd == '+');
+ cmd = inchar();
+ if (cmd == ' ' || cmd == '\n') { /* Turn on or off based on + or - */
+ naca->debug_switch = on ? PPCDBG_ALL:PPCDBG_NONE;
+ printf("Setting all values to %s...\n", on ? "on" : "off");
+ if (cmd == '\n') return;
+ else cmd = skipbl();
+ }
+ else
+ termch = cmd;
+ }
+ termch = cmd; /* not +/- ... let scanhex see it */
+ scanhex((void *)&val);
+ if (val >= 64) {
+ printf("Value %x out of range:\n", val);
+ return;
+ }
+ if (on) {
+ naca->debug_switch |= PPCDBG_BITVAL(val);
+ printf("enable debug %x %s\n", val, trace_names[val] ? trace_names[val] : "");
+ } else {
+ naca->debug_switch &= ~PPCDBG_BITVAL(val);
+ printf("disable debug %x %s\n", val, trace_names[val] ? trace_names[val] : "");
+ }
+ cmd = skipbl();
+ }
+}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)