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Diffstat (limited to 'gnu/usr.bin/binutils/gdb/i386/freebsd-nat.c')
-rw-r--r--gnu/usr.bin/binutils/gdb/i386/freebsd-nat.c802
1 files changed, 0 insertions, 802 deletions
diff --git a/gnu/usr.bin/binutils/gdb/i386/freebsd-nat.c b/gnu/usr.bin/binutils/gdb/i386/freebsd-nat.c
deleted file mode 100644
index 323f751..0000000
--- a/gnu/usr.bin/binutils/gdb/i386/freebsd-nat.c
+++ /dev/null
@@ -1,802 +0,0 @@
-/* Native-dependent code for BSD Unix running on i386's, for GDB.
- Copyright 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
-
-This file is part of GDB.
-
-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.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $FreeBSD$
-*/
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <signal.h>
-#include <sys/user.h>
-#include <machine/reg.h>
-#include <machine/frame.h>
-#include <sys/ptrace.h>
-
-#include "defs.h"
-#include "symtab.h"
-
-/* this table must line up with REGISTER_NAMES in tm-i386v.h */
-/* symbols like 'tEAX' come from <machine/reg.h> */
-static int tregmap[] =
-{
- tEAX, tECX, tEDX, tEBX,
- tESP, tEBP, tESI, tEDI,
- tEIP, tEFLAGS, tCS, tSS,
- tDS, tES, tSS, tSS, /* lies: no fs or gs */
-};
-
-/* blockend is the value of u.u_ar0, and points to the
- place where ES is stored. */
-
-int
-i386_register_u_addr (blockend, regnum)
- int blockend;
- int regnum;
-{
- return (blockend + 4 * tregmap[regnum]);
-}
-
-
-#define fpstate save87
-#define U_FPSTATE(u) u.u_pcb.pcb_savefpu
-
-static void
-i387_to_double (from, to)
- char *from;
- char *to;
-{
- long *lp;
- /* push extended mode on 387 stack, then pop in double mode
- *
- * first, set exception masks so no error is generated -
- * number will be rounded to inf or 0, if necessary
- */
- asm ("pushl %eax"); /* grab a stack slot */
- asm ("fstcw (%esp)"); /* get 387 control word */
- asm ("movl (%esp),%eax"); /* save old value */
- asm ("orl $0x3f,%eax"); /* mask all exceptions */
- asm ("pushl %eax");
- asm ("fldcw (%esp)"); /* load new value into 387 */
-
- asm ("movl 8(%ebp),%eax");
- asm ("fldt (%eax)"); /* push extended number on 387 stack */
- asm ("fwait");
- asm ("movl 12(%ebp),%eax");
- asm ("fstpl (%eax)"); /* pop double */
- asm ("fwait");
-
- asm ("popl %eax"); /* flush modified control word */
- asm ("fnclex"); /* clear exceptions */
- asm ("fldcw (%esp)"); /* restore original control word */
- asm ("popl %eax"); /* flush saved copy */
-}
-
-#if 0
-static void
-double_to_i387 (from, to)
- char *from;
- char *to;
-{
- /* push double mode on 387 stack, then pop in extended mode
- * no errors are possible because every 64-bit pattern
- * can be converted to an extended
- */
- asm ("movl 8(%ebp),%eax");
- asm ("fldl (%eax)");
- asm ("fwait");
- asm ("movl 12(%ebp),%eax");
- asm ("fstpt (%eax)");
- asm ("fwait");
-}
-#endif
-
-struct env387
-{
- unsigned short control;
- unsigned short r0;
- unsigned short status;
- unsigned short r1;
- unsigned short tag;
- unsigned short r2;
- unsigned long eip;
- unsigned short code_seg;
- unsigned short opcode;
- unsigned long operand;
- unsigned short operand_seg;
- unsigned short r3;
- unsigned char regs[8][10];
-};
-
-/* static */ void
-print_387_control_word (control)
-unsigned int control;
-{
- printf ("control 0x%04x: ", control);
- printf ("compute to ");
- switch ((control >> 8) & 3)
- {
- case 0: printf ("24 bits; "); break;
- case 1: printf ("(bad); "); break;
- case 2: printf ("53 bits; "); break;
- case 3: printf ("64 bits; "); break;
- }
- printf ("round ");
- switch ((control >> 10) & 3)
- {
- case 0: printf ("NEAREST; "); break;
- case 1: printf ("DOWN; "); break;
- case 2: printf ("UP; "); break;
- case 3: printf ("CHOP; "); break;
- }
- if (control & 0x3f)
- {
- printf ("mask:");
- if (control & 0x0001) printf (" INVALID");
- if (control & 0x0002) printf (" DENORM");
- if (control & 0x0004) printf (" DIVZ");
- if (control & 0x0008) printf (" OVERF");
- if (control & 0x0010) printf (" UNDERF");
- if (control & 0x0020) printf (" LOS");
- printf (";");
- }
- printf ("\n");
- if (control & 0xe080) printf ("warning: reserved bits on 0x%x\n",
- control & 0xe080);
-}
-
-/* static */ void
-print_387_status_word (status)
- unsigned int status;
-{
- printf ("status 0x%04x: ", status);
- if (status & 0xff)
- {
- printf ("exceptions:");
- if (status & 0x0001) printf (" INVALID");
- if (status & 0x0002) printf (" DENORM");
- if (status & 0x0004) printf (" DIVZ");
- if (status & 0x0008) printf (" OVERF");
- if (status & 0x0010) printf (" UNDERF");
- if (status & 0x0020) printf (" LOS");
- if (status & 0x0040) printf (" FPSTACK");
- printf ("; ");
- }
- printf ("flags: %d%d%d%d; ",
- (status & 0x4000) != 0,
- (status & 0x0400) != 0,
- (status & 0x0200) != 0,
- (status & 0x0100) != 0);
-
- printf ("top %d\n", (status >> 11) & 7);
-}
-
-static void
-print_387_status (status, ep)
- unsigned short status;
- struct env387 *ep;
-{
- int i;
- int bothstatus;
- int top;
- int fpreg;
- unsigned char *p;
-
- bothstatus = ((status != 0) && (ep->status != 0));
- if (status != 0)
- {
- if (bothstatus)
- printf ("u: ");
- print_387_status_word ((unsigned int)status);
- }
-
- if (ep->status != 0)
- {
- if (bothstatus)
- printf ("e: ");
- print_387_status_word ((unsigned int)ep->status);
- }
-
- print_387_control_word ((unsigned int)ep->control);
- printf ("opcode 0x%x; ", ep->opcode);
- printf ("pc 0x%x:0x%x; ", ep->code_seg, ep->eip);
- printf ("operand 0x%x:0x%x\n", ep->operand_seg, ep->operand);
-
- top = (ep->status >> 11) & 7;
-
- printf (" regno tag msb lsb value\n");
- for (fpreg = 7; fpreg >= 0; fpreg--)
- {
- int st_regno;
- double val;
-
- /* The physical regno `fpreg' is only relevant as an index into the
- * tag word. Logical `%st' numbers are required for indexing ep->regs.
- */
- st_regno = (fpreg + 8 - top) & 7;
-
- printf ("%%st(%d) %s ", st_regno, fpreg == top ? "=>" : " ");
-
- switch ((ep->tag >> (fpreg * 2)) & 3)
- {
- case 0: printf ("valid "); break;
- case 1: printf ("zero "); break;
- case 2: printf ("trap "); break;
- case 3: printf ("empty "); break;
- }
- for (i = 9; i >= 0; i--)
- printf ("%02x", ep->regs[st_regno][i]);
-
- i387_to_double (ep->regs[st_regno], (char *)&val);
- printf (" %g\n", val);
- }
-}
-
-void
-i386_float_info ()
-{
- struct user u; /* just for address computations */
- int i;
- /* fpstate defined in <sys/user.h> */
- struct fpstate *fpstatep;
- char buf[sizeof (struct fpstate) + 2 * sizeof (int)];
- unsigned int uaddr;
- char fpvalid;
- unsigned int rounded_addr;
- unsigned int rounded_size;
- /*extern int corechan;*/
- int skip;
- extern int inferior_pid;
-
- uaddr = (char *)&U_FPSTATE(u) - (char *)&u;
- if (inferior_pid)
- {
- int *ip;
-
- rounded_addr = uaddr & -sizeof (int);
- rounded_size = (((uaddr + sizeof (struct fpstate)) - uaddr) +
- sizeof (int) - 1) / sizeof (int);
- skip = uaddr - rounded_addr;
-
- ip = (int *)buf;
- for (i = 0; i < rounded_size; i++)
- {
- *ip++ = ptrace (PT_READ_U, inferior_pid, (caddr_t)rounded_addr, 0);
- rounded_addr += sizeof (int);
- }
- }
- else
- {
-#if 1
- printf("float info: can't do a core file (yet)\n");
- return;
-#else
- if (lseek (corechan, uaddr, 0) < 0)
- perror_with_name ("seek on core file");
- if (myread (corechan, buf, sizeof (struct fpstate)) < 0)
- perror_with_name ("read from core file");
- skip = 0;
-#endif
- }
-
- fpstatep = (struct fpstate *)(buf + skip);
- print_387_status (fpstatep->sv_ex_sw, (struct env387 *)fpstatep);
-}
-
-#ifdef SETUP_ARBITRARY_FRAME
-FRAME
-setup_arbitrary_frame (numargs, args)
-int numargs;
-unsigned int *args;
-{
- if (numargs > 2)
- error ("Too many args in frame specification");
- return create_new_frame ((CORE_ADDR)args[0], (CORE_ADDR)args[1]);
-}
-#endif
-
-#ifdef KERNEL_DEBUG
-#include <sys/proc.h>
-#include <sys/stat.h>
-#include <sys/fcntl.h>
-#include <sys/sysctl.h>
-#include <unistd.h>
-
-#include <vm/vm.h>
-#include <vm/vm_param.h>
-
-#include <machine/vmparam.h>
-#include <machine/pcb.h>
-#include <machine/frame.h>
-
-#define KERNOFF ((unsigned)KERNBASE)
-#define INKERNEL(x) ((x) >= KERNOFF)
-
-static CORE_ADDR sbr;
-static CORE_ADDR curpcb;
-static CORE_ADDR kstack;
-static int found_pcb;
-static int devmem;
-static int kfd;
-static struct pcb pcb;
-int read_pcb (int, CORE_ADDR);
-static CORE_ADDR kvtophys (int, CORE_ADDR);
-static physrd(int, u_int, char*, int);
-
-extern CORE_ADDR ksym_lookup(const char *);
-
-/* substitutes for the stuff in libkvm which doesn't work */
-/* most of this was taken from the old kgdb */
-
-/* we don't need all this stuff, but the call should look the same */
-kvm_open (efile, cfile, sfile, perm, errout)
-char *efile;
-char *cfile;
-char *sfile; /* makes this kvm_open more compatible to the one in libkvm */
-int perm;
-char *errout; /* makes this kvm_open more compatible to the one in libkvm */
-{
- struct stat stb;
- CORE_ADDR addr;
- int cfd;
-
- if ((cfd = open(cfile, perm, 0)) < 0)
- return (cfd);
-
- fstat(cfd, &stb);
- if ((stb.st_mode & S_IFMT) == S_IFCHR && stb.st_rdev == makedev(2, 0)) {
- devmem = 1;
- kfd = open ("/dev/kmem", perm, 0);
- }
-
- physrd(cfd, ksym_lookup("IdlePTD") - KERNOFF, (char*)&sbr, sizeof sbr);
- printf("IdlePTD %x\n", sbr);
- curpcb = ksym_lookup("curpcb") - KERNOFF;
- physrd(cfd, curpcb, (char*)&curpcb, sizeof curpcb);
- kstack = ksym_lookup("kstack");
-
- found_pcb = 1; /* for vtophys */
- if (!devmem)
- read_pcb(cfd, ksym_lookup("dumppcb") - KERNOFF);
- else
- read_pcb(cfd, kvtophys(cfd, kstack));
-
- return (cfd);
-}
-
-kvm_close (fd)
-{
- return (close (fd));
-}
-
-kvm_write(core_kd, memaddr, myaddr, len)
-CORE_ADDR memaddr;
-char *myaddr;
-{
- int cc;
-
- if (devmem) {
- if (kfd > 0) {
- /*
- * Just like kvm_read, only we write.
- */
- errno = 0;
- if (lseek(kfd, (off_t)memaddr, 0) < 0 && errno != 0) {
- error("kvm_write:invalid address (%x)", memaddr);
- return (0);
- }
- cc = write(kfd, myaddr, len);
- if (cc < 0) {
- error("kvm_write:write failed");
- return (0);
- } else if (cc < len)
- error("kvm_write:short write");
- return (cc);
- } else
- return (0);
- } else {
- printf("kvm_write not implemented for dead kernels\n");
- return (0);
- }
- /* NOTREACHED */
-}
-
-kvm_read(core_kd, memaddr, myaddr, len)
-CORE_ADDR memaddr;
-char *myaddr;
-{
- return (kernel_core_file_hook (core_kd, memaddr, myaddr, len));
-}
-
-kvm_uread(core_kd, p, memaddr, myaddr, len)
-register struct proc *p;
-CORE_ADDR memaddr;
-char *myaddr;
-{
- register char *cp;
- char procfile[MAXPATHLEN];
- ssize_t amount;
- int fd;
-
- if (devmem) {
- cp = myaddr;
-
- sprintf(procfile, "/proc/%d/mem", p->p_pid);
- fd = open(procfile, O_RDONLY, 0);
-
- if (fd < 0) {
- error("cannot open %s", procfile);
- close(fd);
- return (0);
- }
-
- while (len > 0) {
- if (lseek(fd, memaddr, 0) == -1 && errno != 0) {
- error("invalid address (%x) in %s",
- memaddr, procfile);
- break;
- }
- amount = read(fd, cp, len);
- if (amount < 0) {
- error("error reading %s", procfile);
- break;
- }
- cp += amount;
- memaddr += amount;
- len -= amount;
- }
-
- close(fd);
- return (ssize_t)(cp - myaddr);
- } else {
- return (kernel_core_file_hook (core_kd, memaddr, myaddr, len));
- }
-}
-
-static struct kinfo_proc kp;
-
-/*
- * try to do what kvm_proclist in libkvm would do
- */
-int
-kvm_proclist (cfd, pid, p, cnt)
-int cfd, pid, *cnt;
-struct proc *p;
-{
- struct proc lp;
-
- for (; p != NULL; p = lp.p_list.le_next) {
- if (!kvm_read(cfd, (CORE_ADDR)p, (char *)&lp, sizeof (lp)))
- return (0);
- if (lp.p_pid != pid)
- continue;
- kp.kp_eproc.e_paddr = p;
- *cnt = 1;
- return (1);
- }
- *cnt = 0;
- return (0);
-}
-
-/*
- * try to do what kvm_deadprocs in libkvm would do
- */
-struct kinfo_proc *
-kvm_deadprocs (cfd, pid, cnt)
-int cfd, pid, *cnt;
-{
- CORE_ADDR allproc, zombproc;
- struct proc *p;
-
- allproc = ksym_lookup("allproc");
- if (kvm_read(cfd, allproc, (char *)&p, sizeof (p)) == 0)
- return (NULL);
- kvm_proclist (cfd, pid, p, cnt);
- if (!*cnt) {
- zombproc = ksym_lookup("zombproc");
- if (kvm_read(cfd, zombproc, (char *)&p, sizeof (p)) == 0)
- return (NULL);
- kvm_proclist (cfd, pid, p, cnt);
- }
- return (&kp);
-}
-
-/*
- * try to do what kvm_getprocs in libkvm would do
- */
-struct kinfo_proc *
-kvm_getprocs (cfd, op, proc, cnt)
-int cfd, op, *cnt;
-CORE_ADDR proc;
-{
- int mib[4], size;
-
- *cnt = 0;
- /* assume it's a pid */
- if (devmem) { /* "live" kernel, use sysctl */
- mib[0] = CTL_KERN;
- mib[1] = KERN_PROC;
- mib[2] = KERN_PROC_PID;
- mib[3] = (int)proc;
- size = sizeof (kp);
- if (sysctl (mib, 4, &kp, &size, NULL, 0) < 0) {
- perror("sysctl");
- *cnt = 0;
- return (NULL);
- }
- if (!size)
- *cnt = 0;
- else
- *cnt = 1;
- return (&kp);
- } else
- return (kvm_deadprocs (cfd, (int)proc, cnt));
-}
-
-static
-physrd(cfd, addr, dat, len)
-u_int addr;
-char *dat;
-{
- if (lseek(cfd, (off_t)addr, L_SET) == -1)
- return (-1);
- return (read(cfd, dat, len));
-}
-
-static CORE_ADDR
-kvtophys (fd, addr)
-CORE_ADDR addr;
-{
- CORE_ADDR v;
- unsigned int pte;
- static CORE_ADDR PTD = -1;
- CORE_ADDR current_ptd;
-#ifdef DEBUG_KVTOPHYS
- CORE_ADDR oldaddr = addr;
-#endif
-
- /*
- * If we're looking at the kernel stack,
- * munge the address to refer to the user space mapping instead;
- * that way we get the requested process's kstack, not the running one.
- */
- /*
- * this breaks xlating user addresses from a crash dump so only
- * do it for a "live" kernel.
- */
- if (devmem && addr >= kstack && addr < kstack + ctob(UPAGES))
- addr = (addr - kstack) + curpcb;
-
- /*
- * We may no longer have a linear system page table...
- *
- * Here's the scoop. IdlePTD contains the physical address
- * of a page table directory that always maps the kernel.
- * IdlePTD is in memory that is mapped 1-to-1, so we can
- * find it easily given its 'virtual' address from ksym_lookup().
- * For hysterical reasons, the value of IdlePTD is stored in sbr.
- *
- * To look up a kernel address, we first convert it to a 1st-level
- * address and look it up in IdlePTD. This gives us the physical
- * address of a page table page; we extract the 2nd-level part of
- * VA and read the 2nd-level pte. Finally, we add the offset part
- * of the VA into the physical address from the pte and return it.
- *
- * User addresses are a little more complicated. If we don't have
- * a current PCB from read_pcb(), we use PTD, which is the (fixed)
- * virtual address of the current ptd. Since it's NOT in 1-to-1
- * kernel space, we must look it up using IdlePTD. If we do have
- * a pcb, we get the ptd from pcb_ptd.
- */
-
- if (INKERNEL(addr))
- current_ptd = sbr;
- else if (found_pcb == 0) {
- if (PTD == -1)
- PTD = kvtophys(fd, ksym_lookup("PTD"));
- current_ptd = PTD;
- } else
- current_ptd = pcb.pcb_cr3;
-
- /*
- * Read the first-level page table (ptd).
- */
- v = current_ptd + ((unsigned)addr >> PDRSHIFT) * sizeof pte;
- if (physrd(fd, v, (char *)&pte, sizeof pte) < 0 || (pte&PG_V) == 0)
- return (~0);
-
- /*
- * Read the second-level page table.
- */
- v = (pte&PG_FRAME) + ((addr >> PAGE_SHIFT)&(NPTEPG-1)) * sizeof pte;
- if (physrd(fd, v, (char *) &pte, sizeof(pte)) < 0 || (pte&PG_V) == 0)
- return (~0);
-
- addr = (pte & PG_FRAME) + (addr & PAGE_MASK);
-#ifdef DEBUG_KVTOPHYS
- printf("vtophys(%x) -> %x\n", oldaddr, addr);
-#endif
- return (addr);
-}
-
-read_pcb (fd, uaddr)
-CORE_ADDR uaddr;
-{
- int i;
- int *pcb_regs = (int *)&pcb;
- int eip;
- CORE_ADDR nuaddr = uaddr;
-
- /* need this for the `proc' command to work */
- if (INKERNEL(uaddr))
- nuaddr = kvtophys(fd, uaddr);
- if (physrd(fd, nuaddr, (char *)&pcb, sizeof pcb) < 0) {
- error("cannot read pcb at %#x\n", uaddr);
- return (-1);
- }
- printf("current pcb at %#x\n", uaddr);
-
- /*
- * get the register values out of the sys pcb and
- * store them where `read_register' will find them.
- */
- for (i = 0; i < 8; ++i)
- supply_register(i, &pcb_regs[i+10]);
- supply_register(8, &pcb_regs[8]); /* eip */
- supply_register(9, &pcb_regs[9]); /* eflags */
- for (i = 10; i < 13; ++i) /* cs, ss, ds */
- supply_register(i, &pcb_regs[i+9]);
- supply_register(13, &pcb_regs[18]); /* es */
- for (i = 14; i < 16; ++i) /* fs, gs */
- supply_register(i, &pcb_regs[i+8]);
-
-#if 0 /* doesn't work ??? */
- /* Hmm... */
- if (target_read_memory(pcb_regs[5+10]+4, &eip, sizeof eip, 0))
- error("Cannot read PC.");
- supply_register(8, &eip); /* eip */
-#endif
-
- /* XXX 80387 registers? */
-}
-
-/*
- * read len bytes from kernel virtual address 'addr' into local
- * buffer 'buf'. Return numbert of bytes if read ok, 0 otherwise. On read
- * errors, portion of buffer not read is zeroed.
- */
-kernel_core_file_hook(fd, addr, buf, len)
- CORE_ADDR addr;
- char *buf;
- int len;
-{
- int i;
- CORE_ADDR paddr;
- register char *cp;
- int cc;
-
- cp = buf;
-
- while (len > 0) {
- paddr = kvtophys(fd, addr);
-#ifdef DEBUG_KCFH
-if(!INKERNEL(addr))
-fprintf(stderr,"addr 0x%x, paddr 0x%x\n", addr, paddr);
-#endif
- if (paddr == ~0) {
- bzero(buf, len);
- break;
- }
- /* we can't read across a page boundary */
- i = min(len, PAGE_SIZE - (addr & PAGE_MASK));
- if ((cc = physrd(fd, paddr, cp, i)) <= 0) {
- bzero(cp, len);
- return (cp - buf);
- }
- cp += cc;
- addr += cc;
- len -= cc;
- }
- return (cp - buf);
-}
-
-/*
- * The following is FreeBSD-specific hackery to decode special frames
- * and elide the assembly-language stub. This could be made faster by
- * defining a frame_type field in the machine-dependent frame information,
- * but we don't think that's too important right now.
- */
-enum frametype { tf_normal, tf_trap, tf_interrupt, tf_syscall };
-
-CORE_ADDR
-fbsd_kern_frame_saved_pc (fr)
-struct frame_info *fr;
-{
- struct minimal_symbol *sym;
- CORE_ADDR this_saved_pc;
- enum frametype frametype;
-
- this_saved_pc = read_memory_integer (fr->frame + 4, 4);
- sym = lookup_minimal_symbol_by_pc (this_saved_pc);
- frametype = tf_normal;
- if (sym != NULL) {
- if (strcmp (SYMBOL_NAME(sym), "calltrap") == 0)
- frametype = tf_trap;
- else if (strncmp (SYMBOL_NAME(sym), "Xresume", 7) == 0)
- frametype = tf_interrupt;
- else if (strcmp (SYMBOL_NAME(sym), "Xsyscall") == 0)
- frametype = tf_syscall;
- }
-
- switch (frametype) {
- case tf_normal:
- return (this_saved_pc);
-
-#define oEIP offsetof(struct trapframe, tf_eip)
-
- case tf_trap:
- return (read_memory_integer (fr->frame + 8 + oEIP, 4));
-
- case tf_interrupt:
- return (read_memory_integer (fr->frame + 16 + oEIP, 4));
-
- case tf_syscall:
- return (read_memory_integer (fr->frame + 8 + oEIP, 4));
-#undef oEIP
- }
-}
-
-CORE_ADDR
-fbsd_kern_frame_chain (fr)
-struct frame_info *fr;
-{
- struct minimal_symbol *sym;
- CORE_ADDR this_saved_pc;
- enum frametype frametype;
-
- this_saved_pc = read_memory_integer (fr->frame + 4, 4);
- sym = lookup_minimal_symbol_by_pc (this_saved_pc);
- frametype = tf_normal;
- if (sym != NULL) {
- if (strcmp (SYMBOL_NAME(sym), "calltrap") == 0)
- frametype = tf_trap;
- else if (strncmp (SYMBOL_NAME(sym), "Xresume", 7) == 0)
- frametype = tf_interrupt;
- else if (strcmp (SYMBOL_NAME(sym), "_Xsyscall") == 0)
- frametype = tf_syscall;
- }
-
- switch (frametype) {
- case tf_normal:
- return (read_memory_integer (fr->frame, 4));
-
-#define oEBP offsetof(struct trapframe, tf_ebp)
-
- case tf_trap:
- return (read_memory_integer (fr->frame + 8 + oEBP, 4));
-
- case tf_interrupt:
- return (read_memory_integer (fr->frame + 16 + oEBP, 4));
-
- case tf_syscall:
- return (read_memory_integer (fr->frame + 8 + oEBP, 4));
-#undef oEBP
- }
-}
-
-#endif /* KERNEL_DEBUG */
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