| 1 | /* Copyright (C) 1997 Free Software Foundation, Inc. |
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| 2 | This file is part of GNU CC. */ |
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| 3 | |
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| 4 | typedef struct frame_state |
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| 5 | { |
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| 6 | void *cfa; |
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| 7 | void *eh_ptr; |
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| 8 | long cfa_offset; |
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| 9 | long args_size; |
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| 10 | long reg_or_offset[FIRST_PSEUDO_REGISTER+1]; |
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| 11 | unsigned short cfa_reg; |
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| 12 | unsigned short retaddr_column; |
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| 13 | char saved[FIRST_PSEUDO_REGISTER+1]; |
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| 14 | } frame_state; |
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| 15 | |
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| 16 | /* Values for 'saved' above. */ |
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| 17 | #define REG_UNSAVED 0 |
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| 18 | #define REG_SAVED_OFFSET 1 |
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| 19 | #define REG_SAVED_REG 2 |
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| 20 | |
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| 21 | /* The representation for an "object" to be searched for frame unwind info. |
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| 22 | For targets with named sections, one object is an executable or shared |
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| 23 | library; for other targets, one object is one translation unit. |
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| 24 | |
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| 25 | A copy of this structure declaration is printed by collect2.c; |
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| 26 | keep the copies synchronized! */ |
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| 27 | |
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| 28 | struct object { |
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| 29 | void *pc_begin; |
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| 30 | void *pc_end; |
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| 31 | struct dwarf_fde *fde_begin; |
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| 32 | struct dwarf_fde **fde_array; |
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| 33 | size_t count; |
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| 34 | struct object *next; |
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| 35 | }; |
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| 36 | |
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| 37 | /* Called either from crtbegin.o or a static constructor to register the |
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| 38 | unwind info for an object or translation unit, respectively. */ |
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| 39 | |
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| 40 | extern void __register_frame_info (void *, struct object *); |
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| 41 | |
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| 42 | /* Similar, but BEGIN is actually a pointer to a table of unwind entries |
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| 43 | for different translation units. Called from the file generated by |
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| 44 | collect2. */ |
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| 45 | extern void __register_frame_info_table (void *, struct object *); |
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| 46 | |
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| 47 | /* Called from crtend.o to deregister the unwind info for an object. */ |
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| 48 | |
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| 49 | extern void __deregister_frame_info (void *); |
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| 50 | |
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| 51 | /* Called from __throw to find the registers to restore for a given |
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| 52 | PC_TARGET. The caller should allocate a local variable of `struct |
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| 53 | frame_state' (declared in frame.h) and pass its address to STATE_IN. |
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| 54 | Returns NULL on failure, otherwise returns STATE_IN. */ |
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| 55 | |
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| 56 | extern struct frame_state *__frame_state_for (void *, struct frame_state *); |
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