diff options
Diffstat (limited to 'gdb/symtab.h')
| -rw-r--r-- | gdb/symtab.h | 44 |
1 files changed, 19 insertions, 25 deletions
diff --git a/gdb/symtab.h b/gdb/symtab.h index 34bc099..8ac6972 100644 --- a/gdb/symtab.h +++ b/gdb/symtab.h @@ -515,6 +515,22 @@ enum address_class LOC_LOCAL_ARG, + /* Value is at SYMBOL_VALUE offset from the current value of + register number SYMBOL_BASEREG. This exists mainly for the same + things that LOC_LOCAL and LOC_ARG do; but we need to do this + instead because on 88k DWARF gives us the offset from the + frame/stack pointer, rather than the offset from the "canonical + frame address" used by COFF, stabs, etc., and we don't know how + to convert between these until we start examining prologues. + + Note that LOC_BASEREG is much less general than a DWARF expression. */ + + LOC_BASEREG, + + /* Same as LOC_BASEREG but it is an argument. */ + + LOC_BASEREG_ARG, + /* The variable does not actually exist in the program. The value is ignored. */ @@ -551,12 +567,8 @@ struct symbol union { - /* for OP_BASEREG in DWARF location specs */ - struct - { - short regno_valid; /* 0 == regno invalid; !0 == regno valid */ - short regno; /* base register number {0, 1, 2, ...} */ - } basereg; + /* Used by LOC_BASEREG and LOC_BASEREG_ARG. */ + short basereg; } aux_value; @@ -566,25 +578,7 @@ struct symbol #define SYMBOL_CLASS(symbol) (symbol)->class #define SYMBOL_TYPE(symbol) (symbol)->type #define SYMBOL_LINE(symbol) (symbol)->line -#define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg.regno - -/* If we want to do baseregs using this approach we should have a - LOC_BASEREG (and LOC_BASEREG_ARG) rather than changing the meaning - of LOC_LOCAL, LOC_ARG, etc. based on SYMBOL_BASEREG_VALID. But - this approach provides just a small fraction of the expressiveness - of a DWARF location, so it does less than we might want. On the - other hand, it may do more than we need; FRAME_LOCALS_ADDRESS, - LOC_REGPARM_ADDR, and similar things seem to handle most of the - cases which actually come up. */ - -#if 0 -/* This currently fails because some symbols are not being initialized - to zero on allocation, and no code is currently setting this value. */ -#define SYMBOL_BASEREG_VALID(symbol) (symbol)->aux_value.basereg.regno_valid -#else -#define SYMBOL_BASEREG_VALID(symbol) 0 -#endif - +#define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg /* A partial_symbol records the name, namespace, and address class of symbols whose types we have not parsed yet. For functions, it also |