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-rw-r--r--sys/cddl/dev/dtrace/i386/dtrace_asm.S164
1 files changed, 0 insertions, 164 deletions
diff --git a/sys/cddl/dev/dtrace/i386/dtrace_asm.S b/sys/cddl/dev/dtrace/i386/dtrace_asm.S
index 6338719..d44f6c3 100644
--- a/sys/cddl/dev/dtrace/i386/dtrace_asm.S
+++ b/sys/cddl/dev/dtrace/i386/dtrace_asm.S
@@ -355,167 +355,3 @@ void dtrace_interrupt_enable(dtrace_icookie_t cookie)
popfl
ret
END(dtrace_interrupt_enable)
-
-/*
- * The panic() and cmn_err() functions invoke vpanic() as a common entry point
- * into the panic code implemented in panicsys(). vpanic() is responsible
- * for passing through the format string and arguments, and constructing a
- * regs structure on the stack into which it saves the current register
- * values. If we are not dying due to a fatal trap, these registers will
- * then be preserved in panicbuf as the current processor state. Before
- * invoking panicsys(), vpanic() activates the first panic trigger (see
- * common/os/panic.c) and switches to the panic_stack if successful. Note that
- * DTrace takes a slightly different panic path if it must panic from probe
- * context. Instead of calling panic, it calls into dtrace_vpanic(), which
- * sets up the initial stack as vpanic does, calls dtrace_panic_trigger(), and
- * branches back into vpanic().
- */
-/*
-void vpanic(const char *format, va_list alist)
-*/
- ENTRY(vpanic) /* Initial stack layout: */
-
- pushl %ebp /* | %eip | 20 */
- movl %esp, %ebp /* | %ebp | 16 */
- pushl %eax /* | %eax | 12 */
- pushl %ebx /* | %ebx | 8 */
- pushl %ecx /* | %ecx | 4 */
- pushl %edx /* | %edx | 0 */
-
- movl %esp, %ebx /* %ebx = current stack pointer */
-
- lea panic_quiesce, %eax /* %eax = &panic_quiesce */
- pushl %eax /* push &panic_quiesce */
- call panic_trigger /* %eax = panic_trigger() */
- addl $4, %esp /* reset stack pointer */
-
-vpanic_common:
- cmpl $0, %eax /* if (%eax == 0) */
- je 0f /* goto 0f; */
-
- /*
- * If panic_trigger() was successful, we are the first to initiate a
- * panic: we now switch to the reserved panic_stack before continuing.
- */
- lea panic_stack, %esp /* %esp = panic_stack */
- addl $PANICSTKSIZE, %esp /* %esp += PANICSTKSIZE */
-
-0: subl $REGSIZE, %esp /* allocate struct regs */
-
- /*
- * Now that we've got everything set up, store the register values as
- * they were when we entered vpanic() to the designated location in
- * the regs structure we allocated on the stack.
- */
-#ifdef notyet
- mov %gs, %edx
- mov %edx, REGOFF_GS(%esp)
- mov %fs, %edx
- mov %edx, REGOFF_FS(%esp)
- mov %es, %edx
- mov %edx, REGOFF_ES(%esp)
- mov %ds, %edx
- mov %edx, REGOFF_DS(%esp)
- movl %edi, REGOFF_EDI(%esp)
- movl %esi, REGOFF_ESI(%esp)
- movl 16(%ebx), %ecx
- movl %ecx, REGOFF_EBP(%esp)
- movl %ebx, %ecx
- addl $20, %ecx
- movl %ecx, REGOFF_ESP(%esp)
- movl 8(%ebx), %ecx
- movl %ecx, REGOFF_EBX(%esp)
- movl 0(%ebx), %ecx
- movl %ecx, REGOFF_EDX(%esp)
- movl 4(%ebx), %ecx
- movl %ecx, REGOFF_ECX(%esp)
- movl 12(%ebx), %ecx
- movl %ecx, REGOFF_EAX(%esp)
- movl $0, REGOFF_TRAPNO(%esp)
- movl $0, REGOFF_ERR(%esp)
- lea vpanic, %ecx
- movl %ecx, REGOFF_EIP(%esp)
- mov %cs, %edx
- movl %edx, REGOFF_CS(%esp)
- pushfl
- popl %ecx
- movl %ecx, REGOFF_EFL(%esp)
- movl $0, REGOFF_UESP(%esp)
- mov %ss, %edx
- movl %edx, REGOFF_SS(%esp)
-
- movl %esp, %ecx /* %ecx = &regs */
- pushl %eax /* push on_panic_stack */
- pushl %ecx /* push &regs */
- movl 12(%ebp), %ecx /* %ecx = alist */
- pushl %ecx /* push alist */
- movl 8(%ebp), %ecx /* %ecx = format */
- pushl %ecx /* push format */
- call panicsys /* panicsys(); */
- addl $16, %esp /* pop arguments */
-
- addl $REGSIZE, %esp
-#endif
- popl %edx
- popl %ecx
- popl %ebx
- popl %eax
- leave
- ret
- END(vpanic)
-
-/*
-void dtrace_vpanic(const char *format, va_list alist)
-*/
- ENTRY(dtrace_vpanic) /* Initial stack layout: */
-
- pushl %ebp /* | %eip | 20 */
- movl %esp, %ebp /* | %ebp | 16 */
- pushl %eax /* | %eax | 12 */
- pushl %ebx /* | %ebx | 8 */
- pushl %ecx /* | %ecx | 4 */
- pushl %edx /* | %edx | 0 */
-
- movl %esp, %ebx /* %ebx = current stack pointer */
-
- lea panic_quiesce, %eax /* %eax = &panic_quiesce */
- pushl %eax /* push &panic_quiesce */
- call dtrace_panic_trigger /* %eax = dtrace_panic_trigger() */
- addl $4, %esp /* reset stack pointer */
- jmp vpanic_common /* jump back to common code */
-
- END(dtrace_vpanic)
-
-/*
-int
-panic_trigger(int *tp)
-*/
- ENTRY(panic_trigger)
- xorl %eax, %eax
- movl $0xdefacedd, %edx
- lock
- xchgl %edx, (%edi)
- cmpl $0, %edx
- je 0f
- movl $0, %eax
- ret
-0: movl $1, %eax
- ret
- END(panic_trigger)
-
-/*
-int
-dtrace_panic_trigger(int *tp)
-*/
- ENTRY(dtrace_panic_trigger)
- xorl %eax, %eax
- movl $0xdefacedd, %edx
- lock
- xchgl %edx, (%edi)
- cmpl $0, %edx
- je 0f
- movl $0, %eax
- ret
-0: movl $1, %eax
- ret
- END(dtrace_panic_trigger)
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