33 lines
935 B
C
33 lines
935 B
C
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#include <debug.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <string.h>
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/* Prints the call stack, that is, a list of addresses, one in
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each of the functions we are nested within. gdb or addr2line
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may be applied to kernel.o to translate these into file names,
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line numbers, and function names. */
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void
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debug_backtrace (void)
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{
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static bool explained;
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void **frame;
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printf ("Call stack: %p", __builtin_return_address (0));
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for (frame = __builtin_frame_address (1);
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(uintptr_t) frame >= 0x1000 && frame[0] != NULL;
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frame = frame[0])
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printf (" %p", frame[1]);
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printf (".\n");
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if (!explained)
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{
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explained = true;
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printf ("The `backtrace' program can make call stacks useful.\n"
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"Read \"Backtraces\" in the \"Debugging Tools\" chapter\n"
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"of the Pintos documentation for more information.\n");
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}
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}
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