X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Ftrad-frame.h;h=7b5785616e0113715c7147c13d876ed99bb3db65;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=4d753153b2e36614a61123c953217170f8558744;hpb=8983bd8343754a6b8b34a0a56e66c5fe03eb4ca3;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/trad-frame.h b/gdb/trad-frame.h index 4d753153b2..7b5785616e 100644 --- a/gdb/trad-frame.h +++ b/gdb/trad-frame.h @@ -1,12 +1,12 @@ /* Traditional frame unwind support, for GDB the GNU Debugger. - Copyright 2003 Free Software Foundation, Inc. + Copyright (C) 2003-2020 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 + the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, @@ -15,54 +15,116 @@ 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + along with this program. If not, see . */ #ifndef TRAD_FRAME_H #define TRAD_FRAME_H +#include "frame.h" /* For "struct frame_id". */ + +struct frame_info; +struct regcache_map_entry; +struct trad_frame_cache; + +/* A simple, or traditional frame cache. + + The entire cache is populated in a single pass and then generic + routines are used to extract the various cache values. */ + +struct trad_frame_cache *trad_frame_cache_zalloc (struct frame_info *); + +/* This frame's ID. */ +void trad_frame_set_id (struct trad_frame_cache *this_trad_cache, + struct frame_id this_id); +void trad_frame_get_id (struct trad_frame_cache *this_trad_cache, + struct frame_id *this_id); +void trad_frame_set_this_base (struct trad_frame_cache *this_trad_cache, + CORE_ADDR this_base); +CORE_ADDR trad_frame_get_this_base (struct trad_frame_cache *this_trad_cache); + +void trad_frame_set_reg_realreg (struct trad_frame_cache *this_trad_cache, + int regnum, int realreg); +void trad_frame_set_reg_addr (struct trad_frame_cache *this_trad_cache, + int regnum, CORE_ADDR addr); +void trad_frame_set_reg_regmap (struct trad_frame_cache *this_trad_cache, + const struct regcache_map_entry *regmap, + CORE_ADDR addr, size_t size); +void trad_frame_set_reg_value (struct trad_frame_cache *this_cache, + int regnum, LONGEST val); + +struct value *trad_frame_get_register (struct trad_frame_cache *this_trad_cache, + struct frame_info *this_frame, + int regnum); + /* A traditional saved regs table, indexed by REGNUM, encoding where the value of REGNUM for the previous frame can be found in this frame. - The table is initialized with an identity encoding (ADDR == 0, - REALNUM == REGNUM) indicating that the value of REGNUM in the - previous frame can be found in register REGNUM (== REALNUM) in this + The table is initialized with an identity encoding (ADDR == -1, + REALREG == REGNUM) indicating that the value of REGNUM in the + previous frame can be found in register REGNUM (== REALREG) in this frame. The initial encoding can then be changed: - Modify ADDR (REALNUM >= 0, ADDR != 0) to indicate that the value of - register REGNUM in the previous frame can be found in memory at - ADDR in this frame. + Modify ADDR (REALREG >= 0, ADDR != -1) to indicate that the value + of register REGNUM in the previous frame can be found in memory at + ADDR in this frame (addr_p, !realreg_p, !value_p). + + Modify REALREG (REALREG >= 0, ADDR == -1) to indicate that the + value of register REGNUM in the previous frame is found in register + REALREG in this frame (!addr_p, realreg_p, !value_p). - Modify REALNUM (REALNUM >= 0, ADDR == 0) to indicate that the value - of register REGNUM in the previous frame is found in register - REALNUM in this frame. + Call trad_frame_set_value (REALREG == -1) to indicate that the + value of register REGNUM in the previous frame is found in ADDR + (!addr_p, !realreg_p, value_p). - Call trad_frame_register_value (REALNUM < 0) to indicate that the - value of register REGNUM in the previous frame is found in ADDR. */ + Call trad_frame_set_unknown (REALREG == -2) to indicate that the + register's value is not known. */ struct trad_frame_saved_reg { LONGEST addr; /* A CORE_ADDR fits in a longest. */ - int realnum; + int realreg; }; -/* Convenience function, encode REGNUM's location in the trad-frame. */ -void trad_frame_register_value (struct trad_frame_saved_reg this_saved_regs[], - int regnum, LONGEST val); +/* Encode REGNUM value in the trad-frame. */ +void trad_frame_set_value (struct trad_frame_saved_reg this_saved_regs[], + int regnum, LONGEST val); + +/* Encode REGNUM is in REALREG in the trad-frame. */ +void trad_frame_set_realreg (struct trad_frame_saved_reg this_saved_regs[], + int regnum, int realreg); + +/* Encode REGNUM is at address ADDR in the trad-frame. */ +void trad_frame_set_addr (struct trad_frame_saved_reg this_trad_cache[], + int regnum, CORE_ADDR addr); + +/* Mark REGNUM as unknown. */ +void trad_frame_set_unknown (struct trad_frame_saved_reg this_saved_regs[], + int regnum); + +/* Convenience functions, return non-zero if the register has been + encoded as specified. */ +int trad_frame_value_p (struct trad_frame_saved_reg this_saved_regs[], + int regnum); +int trad_frame_addr_p (struct trad_frame_saved_reg this_saved_regs[], + int regnum); +int trad_frame_realreg_p (struct trad_frame_saved_reg this_saved_regs[], + int regnum); + +/* Reset the save regs cache, setting register values to -1. */ +void trad_frame_reset_saved_regs (struct gdbarch *gdbarch, + struct trad_frame_saved_reg *regs); /* Return a freshly allocated (and initialized) trad_frame array. */ -struct trad_frame_saved_reg *trad_frame_alloc_saved_regs (struct frame_info *next_frame); +struct trad_frame_saved_reg *trad_frame_alloc_saved_regs (struct frame_info *); +struct trad_frame_saved_reg *trad_frame_alloc_saved_regs (struct gdbarch *); /* Given the trad_frame info, return the location of the specified register. */ -void trad_frame_prev_register (struct frame_info *next_frame, - struct trad_frame_saved_reg this_saved_regs[], - int regnum, int *optimizedp, - enum lval_type *lvalp, CORE_ADDR *addrp, - int *realnump, void *bufferp); +struct value *trad_frame_get_prev_register (struct frame_info *this_frame, + struct trad_frame_saved_reg this_saved_regs[], + int regnum); #endif