diff options
Diffstat (limited to 'gdb/arch/arm.h')
| -rw-r--r-- | gdb/arch/arm.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/gdb/arch/arm.h b/gdb/arch/arm.h index 1a877bcf329..65a5531136f 100644 --- a/gdb/arch/arm.h +++ b/gdb/arch/arm.h @@ -94,6 +94,18 @@ enum gdb_regnum { #define MAKE_THUMB_ADDR(addr) ((addr) | 1) #define UNMAKE_THUMB_ADDR(addr) ((addr) & ~1) +/* Support routines for instruction parsing. */ +#define submask(x) ((1L << ((x) + 1)) - 1) +#define bits(obj,st,fn) (((obj) >> (st)) & submask ((fn) - (st))) +#define bit(obj,st) (((obj) >> (st)) & 1) +#define sbits(obj,st,fn) \ + ((long) (bits(obj,st,fn) | ((long) bit(obj,fn) * ~ submask (fn - st)))) +#define BranchDest(addr,instr) \ + ((CORE_ADDR) (((unsigned long) (addr)) + 8 + (sbits (instr, 0, 23) << 2))) + +/* Forward declaration. */ +struct regcache; + /* Return the size in bytes of the complete Thumb instruction whose first halfword is INST1. */ int thumb_insn_size (unsigned short inst1); @@ -104,4 +116,26 @@ int condition_true (unsigned long cond, unsigned long status_reg); /* Return number of 1-bits in VAL. */ int bitcount (unsigned long val); +/* Return 1 if THIS_INSTR might change control flow, 0 otherwise. */ +int arm_instruction_changes_pc (uint32_t this_instr); + +/* Return 1 if the 16-bit Thumb instruction INST might change + control flow, 0 otherwise. */ +int thumb_instruction_changes_pc (unsigned short inst); + +/* Return 1 if the 32-bit Thumb instruction in INST1 and INST2 + might change control flow, 0 otherwise. */ +int thumb2_instruction_changes_pc (unsigned short inst1, unsigned short inst2); + +/* Advance the state of the IT block and return that state. */ +int thumb_advance_itstate (unsigned int itstate); + +/* Decode shifted register value. */ + +unsigned long shifted_reg_val (struct regcache *regcache, + unsigned long inst, + int carry, + unsigned long pc_val, + unsigned long status_reg); + #endif |