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66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/* Copyright (C) 1997 Free Software Foundation, Inc.
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This file is part of GNU CC. */
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typedef struct frame_state
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{
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void *cfa;
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void *eh_ptr;
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long cfa_offset;
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long args_size;
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long reg_or_offset[FIRST_PSEUDO_REGISTER+1];
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unsigned short cfa_reg;
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unsigned short retaddr_column;
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char saved[FIRST_PSEUDO_REGISTER+1];
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} frame_state;
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/* Values for 'saved' above. */
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#define REG_UNSAVED 0
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#define REG_SAVED_OFFSET 1
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#define REG_SAVED_REG 2
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/* The representation for an "object" to be searched for frame unwind info.
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For targets with named sections, one object is an executable or shared
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library; for other targets, one object is one translation unit.
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A copy of this structure declaration is printed by collect2.c;
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keep the copies synchronized! */
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struct object {
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void *pc_begin;
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void *pc_end;
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struct dwarf_fde *fde_begin;
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struct dwarf_fde **fde_array;
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size_t count;
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struct object *next;
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};
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/* Note the following routines are exported interfaces from libgcc; do not
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change these interfaces. Instead create new interfaces. Also note
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references to these functions may be made weak in files where they
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are referenced. */
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extern void __register_frame (void * );
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extern void __register_frame_table (void *);
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extern void __deregister_frame (void *);
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/* Called either from crtbegin.o or a static constructor to register the
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unwind info for an object or translation unit, respectively. */
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extern void __register_frame_info (void *, struct object *);
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/* Similar, but BEGIN is actually a pointer to a table of unwind entries
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for different translation units. Called from the file generated by
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collect2. */
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extern void __register_frame_info_table (void *, struct object *);
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/* Called from crtend.o to deregister the unwind info for an object. */
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extern void *__deregister_frame_info (void *);
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/* Called from __throw to find the registers to restore for a given
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PC_TARGET. The caller should allocate a local variable of `struct
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frame_state' (declared in frame.h) and pass its address to STATE_IN.
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Returns NULL on failure, otherwise returns STATE_IN. */
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extern struct frame_state *__frame_state_for (void *, struct frame_state *);
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