xmon.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:65k
- /*
- * 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_pagetable_vsids (void);
- static void mem_map_check_slab(void);
- static void mem_map_lock_pages(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 breakpointsn
- bd set data breakpointn
- bi set instruction breakpointn
- bc clear breakpointn
- d dump bytesn
- di dump instructionsn
- df dump float valuesn
- dd dump double valuesn
- e print exception informationn
- f flush cachen
- h dump hash tablen
- m examine/change memoryn
- mm move a block of memoryn
- ms set a block of memoryn
- md compare two blocks of memoryn
- ml locate a block of memoryn
- mz zero a block of memoryn
- mx translation information for an effective addressn
- mi show information about memory allocationn
- M print System.mapn
- p show the task listn
- r print registersn
- s single stepn
- S print special registersn
- t print backtracen
- T Enable/Disable PPCDBG flagsn
- x exit monitorn
- z rebootn
- Z haltn
- ";
- 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");
- }
- /* (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 calledn");
- /* 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 interruptn");
- 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, disablingn",
- bp->address);
- bp->enabled = 0;
- } else {
- store_inst((void *)bp->address);
- }
- }
- if (!__is_processor(PV_POWER4) && !__is_processor(PV_POWER4p)) {
- 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) && !__is_processor(PV_POWER4p)) {
- 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 %xn",
- 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 'j':
- mem_map_check_slab();
- 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 informationn");
- 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 cpusn");
- /* 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 controln", 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 %xn", adrs+i);
- break;
- }
- fcs = FCS(fcs, v);
- }
- printf("%xn", fcs);
- }
- static char *breakpoint_help_string =
- "Breakpoint command usage:n"
- "b show breakpointsn"
- "b <addr> [cnt] set breakpoint at given instr addrn"
- "bc clear all breakpointsn"
- "bc <n/addr> clear breakpoint number n or at addrn"
- "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) || __is_processor(PV_POWER4p)) {
- printf("Not implemented on POWER4n");
- 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) || __is_processor(PV_POWER4p)) {
- 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 clearedn");
- } 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 %xn", 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 countn");
- 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 %8xn", iabr.address & ~3,
- iabr.count);
- for (bp = bpts, bpnum = 1; bp < &bpts[NBPTS]; ++bp, ++bpnum)
- if (bp->enabled)
- printf("%2x trap %.16lx %8x %sn", 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] = ' ';
- 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 %sn", (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(" %sn", funcname);
- if (mread(sp+112, ®s, sizeof(regs)) != sizeof(regs))
- break;
- printf("exception: %lx %s regs %lxn", 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: %lxn", fp->gpr[1]);
- printf(" msr: %lxn", fp->msr);
- if (fp->trap == 0x300 || fp->trap == 0x600) {
- printf(" dar: %lxn", fp->dar);
- printf(" dsisr: %lxn", fp->dsisr);
- }
- /* XXX: need to copy current or we die. Why? */
- c = current;
- printf(" current = 0x%lxn", c);
- printf(" paca = 0x%lxn", get_paca());
- if (c) {
- printf(" current = %lx, pid = %ld, comm = %sn",
- 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 = %.16lxn", n, fp->gpr[n],
- n+16, fp->gpr[n+16]);
- printf("pc = %.16lx msr = %.16lxnlr = %.16lx cr = %.16lxn",
- fp->nip, fp->msr, fp->link, fp->ccr);
- printf("ctr = %.16lx xer = %.16lx trap = %8lxn",
- 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= %.16lxn", get_msr(), get_sprg0());
- printf("pvr = %.16lx sprg1= %.16lxn", get_pvr(), get_sprg1());
- printf("dec = %.16lx sprg2= %.16lxn", get_dec(), get_sprg2());
- printf("sp = %.16lx sprg3= %.16lxn", sp, get_sprg3());
- printf("toc = %.16lx dar = %.16lxn", toc, get_dar());
- printf("srr0 = %.16lx srr1 = %.16lxn", get_srr0(), get_srr1());
- printf("asr = %.16lxn", mfasr());
- for (i = 0; i < 8; ++i)
- printf("sr%.2ld = %.16lx sr%.2ld = %.16lxn", 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 = %lxn", 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 %xn", 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(" ... %xn", 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(" ... %xn", 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 %xn", 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 %xn", 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 memoryn"
- " 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 moden"
- " n do not read memory (for i/o spaces)n"
- " . ok to read (default)n"
- "NOTE: flags are saved as defaultsn"
- "";
- static char *memex_subcmd_help_string =
- "Memory examine subcommands:n"
- " hexval write this val to current locationn"
- " 'string' write chars from string to this locationn"
- " ' increment addressn"
- " ^ decrement addressn"
- " / increment addr by 0x10. //=0x100, ///=0x1000, etcn"
- " \ decrement addr by 0x10. \\=0x100, \\\=0x1000, etcn"
- " ` clear no-read flagn"
- " ; stay at this addrn"
- " v change to byte moden"
- " w change to word (2 byte) moden"
- " l change to long (4 byte) moden"
- " u change to doubleword (8 byte) moden"
- " m addr change current addrn"
- " n toggle no-read flagn"
- " r toggle byte reverse flagn"
- " < count back up count bytesn"
- " > count skip forward count bytesn"
- " x exit this moden"
- "";
- 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 = "mn";
- 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 = "din";
- } else {
- scanhex(&ndump);
- if( ndump == 0 )
- ndump = 64;
- prdump(adrs, ndump);
- adrs += ndump;
- last_cmd = "dn";
- }
- }
- 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%sn", 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("%.8xt", 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 %.2xn", p1 - 1,
- p1[-1], p2 - 1, p2[-1]);
- if( prt > maxpr )
- printf("Total of %d differencesn", 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: %.16xn", 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("%.8xn", a - mskip);
- ook = ok;
- if (a + mskip < a)
- break;
- }
- if (ook)
- printf("%.8xn", 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] = ' ';
- 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 : %.16lxn", ea);
- printf("esid : %.16lxn", esid);
- printf("vsid : %.16lxn", vsid);
- printf("nSoftware Page Tablen-------------------n");
- printf("ptep : %.16lxn", ((unsigned long *)ptep));
- if(ptep) {
- printf("*ptep : %.16lxn", *((unsigned long *)ptep));
- }
- hpte = htab_data.htab + hpteg_slot_primary;
- printf("nHardware Page Tablen-------------------n");
- printf("htab base : %.16lxn", htab_data.htab);
- printf("slot primary : %.16lxn", hpteg_slot_primary);
- printf("slot secondary : %.16lxn", hpteg_slot_secondary);
- printf("nPrimary Groupn");
- for (i=0; i<8; ++i) {
- if ( hpte->dw0.dw0.v != 0 ) {
- printf("%d: (hpte)%.16lx %.16lxn", i, hpte->dw0.dword0, hpte->dw1.dword1);
- printf(" vsid: %.13lx api: %.2lx hash: %.1lxn",
- (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: %.1lxn",
- ((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 Groupn");
- // 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 %.16lxn", i, hpte->dw0.dword0, hpte->dw1.dword1);
- printf(" vsid: %.13lx api: %.2lx hash: %.1lxn",
- (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: %.1lxn",
- ((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 Tablen-----------------------n");
- stabl = (unsigned long)(KERNELBASE+(_ASR&0xFFFFFFFFFFFFFFFE));
- steg = (unsigned long *)((stabl) | ((esid & 0x1f) << 7));
- printf("stab base : %.16lxn", stabl);
- printf("slot : %.16lxn", steg);
- for (i=0; i<8; ++i) {
- printf("%d: (ste) %.16lx %.16lxn", 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 Checkn-------------------n");
- printf("htab base : %.16lxn", htab_data.htab);
- printf("htab size : %.16lxn", 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 %16.16lxn",
- hpte1, hpte1->dw0.dword0, hpte1->dw1.dword1);
- printf(" hpte2: %16.16lx *hpte2: %16.16lx %16.16lxn",
- hpte2, hpte2->dw0.dword0, hpte2->dw1.dword1);
- }
- }
- }
- } else {
- printf(" Bogus rpn: %.13lx n", (hpte1->dw1.dw1.rpn));
- printf(" hpte: %16.16lx *hpte: %16.16lx %16.16lxn",
- 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 RPNn-------------------n");
- printf("htab base : %.16lxn", htab_data.htab);
- printf("htab size : %.16lxn", 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 %16.16lxn",
- 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 VSIDn-------------------n");
- printf("htab base : %.16lxn", htab_data.htab);
- printf("htab size : %.16lxn", 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 %16.16lxn",
- 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_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 Checkn-------------------n");
- printf("htab base : %.16lxn", htab_data.htab);
- printf("htab size : %.16lxn", 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 %16.16lxn",
- hpte2, hpte2->dw0.dword0, hpte2->dw1.dword1);
- }
- }
- }
- }
- } else {
- printf(" Bogus rpn: %.13lx n", (hpte1->dw1.dw1.rpn));
- printf(" hpte: %16.16lx *hpte: %16.16lx %16.16lxn",
- 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 = %lxn", kernel_vsid_c0 );
- printf(" kernel vsid - seg c1 = %lxn", kernel_vsid_c1 );
- printf(" kernel vsid - seg c2 = %lxn", kernel_vsid_c2 );
- printf(" kernel vsid - seg c3 = %lxn", kernel_vsid_c3 );
- printf(" kernel vsid - seg c4 = %lxn", kernel_vsid_c4 );
- printf(" kernel vsid - seg c5 = %lxn", kernel_vsid_c5 );
- printf(" kernel vsid - seg d = %lxn", kernel_vsid_d );
- printf(" kernel vsid - seg e = %lxn", kernel_vsid_e );
- printf(" kernel vsid - seg f = %lxn", 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 %lxn",
- 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 = %lxn", mm->context, vsid0 );
- printf(" vsid seg 1 = %lxn", vsid1 );
- printf(" vsid seg 2 = %lxn", vsid2 );
- printf(" vsid seg 2 = %lxn", 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 Checkn-------------------n");
- printf("htab base : %.16lxn", htab_data.htab);
- printf("htab size : %.16lxn", 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");
- }
- 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%lxn", 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 %sn", val, trace_names[val] ? trace_names[val] : "");
- } else {
- naca->debug_switch &= ~PPCDBG_BITVAL(val);
- printf("disable debug %x %sn", val, trace_names[val] ? trace_names[val] : "");
- }
- cmd = skipbl();
- }
- }