#include "bfd.h"
#include "symfile.h"
#include "objfiles.h"
+#include "demangle.h"
/* Accumulate the minimal symbols for each objfile in bunches of BUNCH_SIZE.
At the end, copy them all into one newly allocated location on an objfile's
if (objf == NULL || objf == objfile)
{
for (msymbol = objfile -> msymbols;
- msymbol != NULL && msymbol -> name != NULL &&
+ msymbol != NULL && SYMBOL_NAME (msymbol) != NULL &&
found_symbol == NULL;
msymbol++)
{
- if (strcmp (msymbol -> name, name) == 0)
+ if (SYMBOL_MATCHES_NAME (msymbol, name))
{
#ifdef IBM6000_TARGET
-/* I *think* all platforms using shared libraries (and trampoline code)
- * will suffer this problem. Consider a case where there are 5 shared
- * libraries, each referencing `foo' with a trampoline entry. When someone
- * wants to put a breakpoint on `foo' and the only info we have is minimal
- * symbol vector, we want to use the real `foo', rather than one of those
- * trampoline entries. MGO */
- /* If a trampoline symbol is found, we prefer to keep looking
- for the *real* symbol. If the actual symbol not found,
- then we'll use the trampoline entry. Sorry for the machine
- dependent code here, but I hope this will benefit other
- platforms as well. For trampoline entries, we used mst_unknown
- earlier. Perhaps we should define a `mst_trampoline' type?? */
-
- if (msymbol->type != mst_unknown)
+ /* I *think* all platforms using shared libraries (and
+ trampoline code) will suffer this problem. Consider a
+ case where there are 5 shared libraries, each referencing
+ `foo' with a trampoline entry. When someone wants to put
+ a breakpoint on `foo' and the only info we have is minimal
+ symbol vector, we want to use the real `foo', rather than
+ one of those trampoline entries. MGO */
+ /* If a trampoline symbol is found, we prefer to keep looking
+ for the *real* symbol. If the actual symbol not found,
+ then we'll use the trampoline entry. Sorry for the machine
+ dependent code here, but I hope this will benefit other
+ platforms as well. For trampoline entries, we used
+ mst_unknown earlier. Perhaps we should define a
+ `mst_trampoline' type?? */
+
+ if (MSYMBOL_TYPE (msymbol) != mst_unknown)
found_symbol = msymbol;
- else if (msymbol->type == mst_unknown && !trampoline_symbol)
+ else if (MSYMBOL_TYPE (msymbol) == mst_unknown &&
+ !trampoline_symbol)
trampoline_symbol = msymbol;
#else
Warning: this code is trickier than it would appear at first. */
/* Should also requires that pc is <= end of objfile. FIXME! */
- if (pc >= msymbol[lo].address)
+ if (pc >= SYMBOL_VALUE_ADDRESS (&msymbol[lo]))
{
- while (msymbol[hi].address > pc)
+ while (SYMBOL_VALUE_ADDRESS (&msymbol[hi]) > pc)
{
/* pc is still strictly less than highest address */
/* Note "new" will always be >= lo */
new = (lo + hi) / 2;
- if ((msymbol[new].address >= pc) || (lo == new))
+ if ((SYMBOL_VALUE_ADDRESS (&msymbol[new]) >= pc) ||
+ (lo == new))
{
hi = new;
}
overall. */
if ((best_symbol == NULL) ||
- (best_symbol -> address < msymbol[hi].address))
+ (SYMBOL_VALUE_ADDRESS (best_symbol) <
+ SYMBOL_VALUE_ADDRESS (&msymbol[hi])))
{
best_symbol = &msymbol[hi];
}
enum minimal_symbol_type ms_type;
{
register struct msym_bunch *new;
+ register struct minimal_symbol *msymbol;
if (msym_bunch_index == BUNCH_SIZE)
{
new -> next = msym_bunch;
msym_bunch = new;
}
- msym_bunch -> contents[msym_bunch_index].name = (char *) name;
- msym_bunch -> contents[msym_bunch_index].address = address;
- msym_bunch -> contents[msym_bunch_index].info = NULL;
- msym_bunch -> contents[msym_bunch_index].type = ms_type;
+ msymbol = &msym_bunch -> contents[msym_bunch_index];
+ SYMBOL_NAME (msymbol) = (char *) name;
+ /* Note that SYMBOL_LANGUAGE and SYMBOL_DEMANGLED_NAME are not initialized
+ to their final values until the minimal symbols are actually added to
+ the minimal symbol table. We just set them to a known state here so
+ random values won't confuse anyone debugging the debugger. */
+ SYMBOL_LANGUAGE (msymbol) = language_unknown;
+ SYMBOL_DEMANGLED_NAME (msymbol) = NULL;
+ SYMBOL_VALUE_ADDRESS (msymbol) = address;
+ MSYMBOL_TYPE (msymbol) = ms_type;
+ /* FIXME: This info, if it remains, needs its own field. */
+ MSYMBOL_INFO (msymbol) = NULL; /* FIXME! */
msym_bunch_index++;
msym_count++;
}
+/* FIXME: Why don't we just combine this function with the one above
+ and pass it a NULL info pointer value if info is not needed? */
+
void
prim_record_minimal_symbol_and_info (name, address, ms_type, info)
const char *name;
char *info;
{
register struct msym_bunch *new;
+ register struct minimal_symbol *msymbol;
if (msym_bunch_index == BUNCH_SIZE)
{
new -> next = msym_bunch;
msym_bunch = new;
}
- msym_bunch -> contents[msym_bunch_index].name = (char *) name;
- msym_bunch -> contents[msym_bunch_index].address = address;
- msym_bunch -> contents[msym_bunch_index].info = NULL;
- msym_bunch -> contents[msym_bunch_index].type = ms_type;
- /* FIXME: This info, if it remains, needs its own field. */
- msym_bunch -> contents[msym_bunch_index].info = info; /* FIXME! */
+ msymbol = &msym_bunch -> contents[msym_bunch_index];
+ SYMBOL_NAME (msymbol) = (char *) name;
+ /* Note that SYMBOL_LANGUAGE and SYMBOL_DEMANGLED_NAME are not initialized
+ to their final values until the minimal symbols are actually added to
+ the minimal symbol table. We just set them to a known state here so
+ random values won't confuse anyone debugging the debugger. */
+ SYMBOL_LANGUAGE (msymbol) = language_unknown;
+ SYMBOL_DEMANGLED_NAME (msymbol) = NULL;
+ SYMBOL_VALUE_ADDRESS (msymbol) = address;
+ MSYMBOL_TYPE (msymbol) = ms_type;
+ /* FIXME: This info, if it remains, needs its own field. */
+ MSYMBOL_INFO (msymbol) = info; /* FIXME! */
msym_bunch_index++;
msym_count++;
}
fn1 = (const struct minimal_symbol *) fn1p;
fn2 = (const struct minimal_symbol *) fn2p;
- if (fn1 -> address < fn2 -> address)
+ if (SYMBOL_VALUE_ADDRESS (fn1) < SYMBOL_VALUE_ADDRESS (fn2))
{
return (-1);
}
- else if (fn1 -> address > fn2 -> address)
+ else if (SYMBOL_VALUE_ADDRESS (fn1) > SYMBOL_VALUE_ADDRESS (fn2))
{
return (1);
}
copyfrom = copyto = msymbol;
while (copyfrom < msymbol + mcount - 1)
{
- if (copyfrom -> address == (copyfrom + 1) -> address
- && (strcmp (copyfrom -> name, (copyfrom + 1) -> name) == 0))
+ if (SYMBOL_VALUE_ADDRESS (copyfrom) ==
+ SYMBOL_VALUE_ADDRESS ((copyfrom + 1)) &&
+ (STREQ (SYMBOL_NAME (copyfrom), SYMBOL_NAME ((copyfrom + 1)))))
{
- if ((copyfrom + 1) -> type == mst_unknown)
+ if (MSYMBOL_TYPE((copyfrom + 1)) == mst_unknown)
{
- (copyfrom + 1) -> type = copyfrom -> type;
+ MSYMBOL_TYPE ((copyfrom + 1)) = MSYMBOL_TYPE (copyfrom);
}
copyfrom++;
}
return (mcount);
}
-/* Add the minimal symbols in the existing bunches to the objfile's
- official minimal symbol table. 99% of the time, this adds the
- bunches to NO existing symbols. Once in a while for shared
- libraries, we add symbols (e.g. common symbols) to an existing
- objfile. */
+/* Add the minimal symbols in the existing bunches to the objfile's official
+ minimal symbol table. In most cases there is no minimal symbol table yet
+ for this objfile, and the existing bunches are used to create one. Once
+ in a while (for shared libraries for example), we add symbols (e.g. common
+ symbols) to an existing objfile.
+
+ Because of the way minimal symbols are collected, we generally have no way
+ of knowing what source language applies to any particular minimal symbol.
+ Specifically, we have no way of knowing if the minimal symbol comes from a
+ C++ compilation unit or not. So for the sake of supporting cached
+ demangled C++ names, we have no choice but to try and demangle each new one
+ that comes in. If the demangling succeeds, then we assume it is a C++
+ symbol and set the symbol's language and demangled name fields
+ appropriately. Note that in order to avoid unnecessary demanglings, and
+ allocating obstack space that subsequently can't be freed for the demangled
+ names, we mark all newly added symbols with language_auto. After
+ compaction of the minimal symbols, we go back and scan the entire minimal
+ symbol table looking for these new symbols. For each new symbol we attempt
+ to demangle it, and if successful, record it as a language_cplus symbol
+ and cache the demangled form on the symbol obstack. Symbols which don't
+ demangle are marked as language_unknown symbols, which inhibits future
+ attempts to demangle them if we later add more minimal symbols. */
void
install_minimal_symbols (objfile)
register struct minimal_symbol *msymbols;
int alloc_count;
register char leading_char;
+ char *demangled_name;
if (msym_count > 0)
{
for (bindex = 0; bindex < msym_bunch_index; bindex++, mcount++)
{
msymbols[mcount] = bunch -> contents[bindex];
- if (msymbols[mcount].name[0] == leading_char)
+ SYMBOL_LANGUAGE (&msymbols[mcount]) = language_auto;
+ if (SYMBOL_NAME (&msymbols[mcount])[0] == leading_char)
{
- msymbols[mcount].name++;
+ SYMBOL_NAME(&msymbols[mcount])++;
}
}
msym_bunch_index = BUNCH_SIZE;
msymbols = (struct minimal_symbol *)
obstack_finish (&objfile->symbol_obstack);
- /* We also terminate the minimal symbol table
- with a "null symbol", which is *not* included in the size of
- the table. This makes it easier to find the end of the table
- when we are handed a pointer to some symbol in the middle of it.
- Zero out the fields in the "null symbol" allocated at the end
- of the array. Note that the symbol count does *not* include
- this null symbol, which is why it is indexed by mcount and not
- mcount-1. */
-
- msymbols[mcount].name = NULL;
- msymbols[mcount].address = 0;
- msymbols[mcount].info = NULL;
- msymbols[mcount].type = mst_unknown;
+ /* We also terminate the minimal symbol table with a "null symbol",
+ which is *not* included in the size of the table. This makes it
+ easier to find the end of the table when we are handed a pointer
+ to some symbol in the middle of it. Zero out the fields in the
+ "null symbol" allocated at the end of the array. Note that the
+ symbol count does *not* include this null symbol, which is why it
+ is indexed by mcount and not mcount-1. */
+
+ SYMBOL_NAME (&msymbols[mcount]) = NULL;
+ SYMBOL_VALUE_ADDRESS (&msymbols[mcount]) = 0;
+ MSYMBOL_INFO (&msymbols[mcount]) = NULL;
+ MSYMBOL_TYPE (&msymbols[mcount]) = mst_unknown;
+ SYMBOL_LANGUAGE (&msymbols[mcount]) = language_unknown;
+ SYMBOL_DEMANGLED_NAME (&msymbols[mcount]) = NULL;
/* Attach the minimal symbol table to the specified objfile.
The strings themselves are also located in the symbol_obstack
objfile -> minimal_symbol_count = mcount;
objfile -> msymbols = msymbols;
+
+ /* Now walk through all the minimal symbols, selecting the newly added
+ ones and attempting to cache their C++ demangled names. */
+
+ for ( ; mcount-- > 0 ; msymbols++)
+ {
+ if (SYMBOL_LANGUAGE (msymbols) == language_auto)
+ {
+ demangled_name = cplus_demangle (SYMBOL_NAME (msymbols),
+ DMGL_PARAMS | DMGL_ANSI);
+ if (demangled_name == NULL)
+ {
+ SYMBOL_LANGUAGE (msymbols) = language_unknown;
+ }
+ else
+ {
+ SYMBOL_LANGUAGE (msymbols) = language_cplus;
+ SYMBOL_DEMANGLED_NAME (msymbols) =
+ obsavestring (demangled_name, strlen (demangled_name),
+ &objfile->symbol_obstack);
+
+ free (demangled_name);
+ }
+ }
+ }
}
}
projects / thirdparty / binutils-gdb.git / blobdiff