diff options
Diffstat (limited to 'elfutils/libdw/libdw.h')
| -rw-r--r-- | elfutils/libdw/libdw.h | 96 |
1 files changed, 51 insertions, 45 deletions
diff --git a/elfutils/libdw/libdw.h b/elfutils/libdw/libdw.h index 350aa440..69eb903f 100644 --- a/elfutils/libdw/libdw.h +++ b/elfutils/libdw/libdw.h @@ -90,9 +90,6 @@ typedef struct Dwarf_Aranges_s Dwarf_Aranges; /* CU representation. */ struct Dwarf_CU; -/* Function information. */ -typedef struct Dwarf_Func_s Dwarf_Func; - /* Macro information. */ typedef struct Dwarf_Macro_s Dwarf_Macro; @@ -138,15 +135,15 @@ typedef struct } Dwarf_Global; -// XXX It remains to be seen whether the next two need to be exported. -/* Location record. */ +/* One operation in a DWARF location expression. + A location expression is an array of these. */ typedef struct { uint8_t atom; /* Operation */ Dwarf_Word number; /* Operand */ Dwarf_Word number2; /* Possible second operand */ Dwarf_Word offset; /* Offset in location expression */ -} Dwarf_Loc; +} Dwarf_Op; /* Handle for debug sessions. */ @@ -194,6 +191,10 @@ extern Dwarf_Off dwarf_dieoffset (Dwarf_Die *die); /* Return offset of DIE in CU. */ extern Dwarf_Off dwarf_cuoffset (Dwarf_Die *die); +/* Return CU DIE containing given DIE. */ +extern Dwarf_Die *dwarf_diecu (Dwarf_Die *die, Dwarf_Die *result, + uint8_t *address_sizep, uint8_t *offset_sizep); + /* Return CU DIE containing given address. */ extern Dwarf_Die *dwarf_addrdie (Dwarf *dbg, Dwarf_Addr addr, Dwarf_Die *result) __nonnull_attribute__ (3); @@ -292,10 +293,26 @@ extern int dwarf_highpc (Dwarf_Die *die, Dwarf_Addr *return_addr) extern int dwarf_lowpc (Dwarf_Die *die, Dwarf_Addr *return_addr) __nonnull_attribute__ (2); +/* Return entry_pc or low_pc attribute of DIE. */ +extern int dwarf_entrypc (Dwarf_Die *die, Dwarf_Addr *return_addr) + __nonnull_attribute__ (2); + /* Return 1 if DIE's lowpc/highpc or ranges attributes match the PC address, 0 if not, or -1 for errors. */ extern int dwarf_haspc (Dwarf_Die *die, Dwarf_Addr pc); +/* Enumerate the PC address ranges covered by this DIE, covering all + addresses where dwarf_haspc returns true. In the first call OFFSET + should be zero and *BASEP need not be initialized. Returns -1 for + errors, zero when there are no more address ranges to report, or a + nonzero OFFSET value to pass to the next call. Each subsequent call + must preserve *BASEP from the prior call. Successful calls fill in + *STARTP and *ENDP with a contiguous address range. */ +extern ptrdiff_t dwarf_ranges (Dwarf_Die *die, + ptrdiff_t offset, Dwarf_Addr *basep, + Dwarf_Addr *startp, Dwarf_Addr *endp); + + /* Return byte size attribute of DIE. */ extern int dwarf_bytesize (Dwarf_Die *die); @@ -416,21 +433,21 @@ extern const char *dwarf_filesrc (Dwarf_Files *file, size_t idx, Dwarf_Word *mtime, Dwarf_Word *length); -/* Return location expression list. */ -extern int dwarf_getloclist (Dwarf_Attribute *attr, Dwarf_Loc **llbuf, - size_t *listlen) __nonnull_attribute__ (2, 3); +/* Return location expression, decoded as a list of operations. */ +extern int dwarf_getlocation (Dwarf_Attribute *attr, Dwarf_Op **expr, + size_t *exprlen) __nonnull_attribute__ (2, 3); -/* Return location expression lists. If the attribute uses a location - list, ADDRESS selects the relevant location expressions from the list. +/* Return location expressions. If the attribute uses a location list, + ADDRESS selects the relevant location expressions from the list. There can be multiple matches, resulting in multiple expressions to - return. LLBUFS and LISTLENS are parallel arrays of NLOCS slots to fill - in. Returns the number of locations filled in, or -1 for errors. If - LLBUFS is a null pointer, stores nothing and returns the total number of - locations. A return value of zero means that the location list - indicated no value is accessible. */ -extern int dwarf_addrloclists (Dwarf_Attribute *attr, Dwarf_Addr address, - Dwarf_Loc **llbufs, size_t *listlens, - size_t nlocs); + return. EXPRS and EXPRLENS are parallel arrays of NLOCS slots to + fill in. Returns the number of locations filled in, or -1 for + errors. If EXPRS is a null pointer, stores nothing and returns the + total number of locations. A return value of zero means that the + location list indicated no value is accessible. */ +extern int dwarf_getlocation_addr (Dwarf_Attribute *attr, Dwarf_Addr address, + Dwarf_Op **exprs, size_t *exprlens, + size_t nlocs); /* Return scope DIEs containing PC address. @@ -488,48 +505,37 @@ extern Dwarf_Arange *dwarf_getarange_addr (Dwarf_Aranges *aranges, /* Get functions in CUDIE. */ extern ptrdiff_t dwarf_getfuncs (Dwarf_Die *cudie, - int (*callback) (Dwarf_Func *, void *), + int (*callback) (Dwarf_Die *, void *), void *arg, ptrdiff_t offset); -/* Return name of function. */ -extern const char *dwarf_func_name (Dwarf_Func *func); -/* Return start address of function. */ -extern int dwarf_func_lowpc (Dwarf_Func *func, Dwarf_Addr *return_addr) - __nonnull_attribute__ (2); +/* Return file name containing definition of the given declaration. */ +extern const char *dwarf_decl_file (Dwarf_Die *decl); -/* Return end address of function. */ -extern int dwarf_func_highpc (Dwarf_Func *func, Dwarf_Addr *return_addr) +/* Get line number of beginning of given declaration. */ +extern int dwarf_decl_line (Dwarf_Die *decl, int *linep) __nonnull_attribute__ (2); -/* Return entry point address of function. */ -extern int dwarf_func_entrypc (Dwarf_Func *func, Dwarf_Addr *return_addr) +/* Get column number of beginning of given declaration. */ +extern int dwarf_decl_column (Dwarf_Die *decl, int *colp) __nonnull_attribute__ (2); -/* Return file name containing definition of the given function. */ -extern const char *dwarf_func_file (Dwarf_Func *func); - -/* Get line number of beginning of given function. */ -extern int dwarf_func_line (Dwarf_Func *func, int *linep) - __nonnull_attribute__ (2); - -/* Get column number of beginning of given function. */ -extern int dwarf_func_col (Dwarf_Func *func, int *colp) - __nonnull_attribute__ (2); - -/* Get definition DIE of given function. */ -extern Dwarf_Die *dwarf_func_die (Dwarf_Func *func, Dwarf_Die *die_mem) - __nonnull_attribute__ (2); /* Return nonzero if given function is an abstract inline definition. */ -extern int dwarf_func_inline (Dwarf_Func *func); +extern int dwarf_func_inline (Dwarf_Die *func); /* Find each concrete inlined instance of the abstract inline definition. */ -extern int dwarf_func_inline_instances (Dwarf_Func *func, +extern int dwarf_func_inline_instances (Dwarf_Die *func, int (*callback) (Dwarf_Die *, void *), void *arg); +/* Find the appropriate PC location or locations for function entry + breakpoints for the given DW_TAG_subprogram DIE. Returns -1 for errors. + On success, returns the number of breakpoint locations (never zero) + and sets *BKPTS to a malloc'd vector of addresses. */ +extern int dwarf_entry_breakpoints (Dwarf_Die *die, Dwarf_Addr **bkpts); + /* Call callback function for each of the macro information entry for the CU. */ |