diff options
Diffstat (limited to 'gdb/gdbarch.h')
| -rw-r--r-- | gdb/gdbarch.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h index d7e7c49..e5e30f3 100644 --- a/gdb/gdbarch.h +++ b/gdb/gdbarch.h @@ -115,6 +115,18 @@ enum function_call_return_method return_method_struct, }; +enum memtag_type +{ + /* Logical tag, the tag that is stored in unused bits of a pointer to a + virtual address. */ + tag_logical = 0, + + /* Allocation tag, the tag that is associated with every granule of memory in + the physical address space. Allocation tags are used to validate memory + accesses via pointers containing logical tags. */ + tag_allocation, +}; + /* The following are pre-initialized by GDBARCH. */ @@ -705,6 +717,47 @@ extern void set_gdbarch_addr_bits_remove (struct gdbarch *gdbarch, gdbarch_addr_ extern int gdbarch_significant_addr_bit (struct gdbarch *gdbarch); extern void set_gdbarch_significant_addr_bit (struct gdbarch *gdbarch, int significant_addr_bit); +/* Return a string representation of the memory tag TYPE of ADDRESS. + If no tag is associated with such an address, return the empty string. */ + +typedef std::string (gdbarch_memtag_to_string_ftype) (struct gdbarch *gdbarch, struct value *address, enum memtag_type tag_type); +extern std::string gdbarch_memtag_to_string (struct gdbarch *gdbarch, struct value *address, enum memtag_type tag_type); +extern void set_gdbarch_memtag_to_string (struct gdbarch *gdbarch, gdbarch_memtag_to_string_ftype *memtag_to_string); + +/* Return true if ADDRESS contains a tag and false otherwise. */ + +typedef bool (gdbarch_tagged_address_p_ftype) (struct gdbarch *gdbarch, struct value *address); +extern bool gdbarch_tagged_address_p (struct gdbarch *gdbarch, struct value *address); +extern void set_gdbarch_tagged_address_p (struct gdbarch *gdbarch, gdbarch_tagged_address_p_ftype *tagged_address_p); + +/* Return true if the tag from ADDRESS does not match the memory tag for that + particular address. Return false otherwise. */ + +typedef bool (gdbarch_memtag_mismatch_p_ftype) (struct gdbarch *gdbarch, struct value *address); +extern bool gdbarch_memtag_mismatch_p (struct gdbarch *gdbarch, struct value *address); +extern void set_gdbarch_memtag_mismatch_p (struct gdbarch *gdbarch, gdbarch_memtag_mismatch_p_ftype *memtag_mismatch_p); + +/* Set the tags for the address range [ADDRESS, ADDRESS + LENGTH) to TAGS + Return 0 if successful and non-zero otherwise. */ + +typedef int (gdbarch_set_memtags_ftype) (struct gdbarch *gdbarch, struct value *address, size_t length, const gdb::byte_vector &tags, enum memtag_type tag_type); +extern int gdbarch_set_memtags (struct gdbarch *gdbarch, struct value *address, size_t length, const gdb::byte_vector &tags, enum memtag_type tag_type); +extern void set_gdbarch_set_memtags (struct gdbarch *gdbarch, gdbarch_set_memtags_ftype *set_memtags); + +/* Return the tag portion of ADDRESS, assuming ADDRESS is tagged. */ + +typedef struct value * (gdbarch_get_memtag_ftype) (struct gdbarch *gdbarch, struct value *address, enum memtag_type tag_type); +extern struct value * gdbarch_get_memtag (struct gdbarch *gdbarch, struct value *address, enum memtag_type tag_type); +extern void set_gdbarch_get_memtag (struct gdbarch *gdbarch, gdbarch_get_memtag_ftype *get_memtag); + +/* memtag_granule_size is the size of the allocation tag granule, for + architectures that support memory tagging. + This is 0 for architectures that do not support memory tagging. + For a non-zero value, this represents the number of bytes of memory per tag. */ + +extern CORE_ADDR gdbarch_memtag_granule_size (struct gdbarch *gdbarch); +extern void set_gdbarch_memtag_granule_size (struct gdbarch *gdbarch, CORE_ADDR memtag_granule_size); + /* FIXME/cagney/2001-01-18: This should be split in two. A target method that indicates if the target needs software single step. An ISA method to implement it. |