diff options
Diffstat (limited to 'gdb/tm-29k.h')
| -rw-r--r-- | gdb/tm-29k.h | 101 |
1 files changed, 61 insertions, 40 deletions
diff --git a/gdb/tm-29k.h b/gdb/tm-29k.h index 2718061..72e4d98 100644 --- a/gdb/tm-29k.h +++ b/gdb/tm-29k.h @@ -147,9 +147,18 @@ CORE_ADDR skip_prologue (); "AI10", "AI11", "AI12", "AI13", "AI14", "AI15", "FP", \ "bp", "fc", "cr", "q", \ "vab", "ops", "cps", "cfg", "cha", "chd", "chc", "rbp", "tmc", "tmr", \ - "pc0", "pc1", "pc2", "mmu", "lru", "fpe", "int", "fps", "exo", "gr1", \ + "pc0", "pc1", "pc2", "mmu", "lru", "fpe", "inte", "fps", "exo", "gr1", \ "alu", "ipc", "ipa", "ipb" } +/* + * Provide the processor register numbers of some registers that are + * expected/written in instructions that might change under different + * register sets. Namely, gcc can compile (-mkernel-registers) so that + * it uses gr64-gr95 in stead of gr96-gr127. + */ +#define MSP_HW_REGNUM 125 /* gr125 */ +#define RAB_HW_REGNUM 126 /* gr126 */ + /* Convert Processor Special register #x to REGISTER_NAMES register # */ #define SR_REGNUM(x) \ ((x) < 15 ? VAB_REGNUM + (x) \ @@ -202,7 +211,7 @@ CORE_ADDR skip_prologue (); #define MMU_REGNUM (VAB_REGNUM + 13) #define LRU_REGNUM (VAB_REGNUM + 14) #define FPE_REGNUM (VAB_REGNUM + 15) -#define INT_REGNUM (VAB_REGNUM + 16) +#define INTE_REGNUM (VAB_REGNUM + 16) #define FPS_REGNUM (VAB_REGNUM + 17) #define EXO_REGNUM (VAB_REGNUM + 18) /* gr1 is defined above as 200 = VAB_REGNUM + 19 */ @@ -422,17 +431,22 @@ long read_register_stack_integer (); #define EXTRA_FRAME_INFO \ CORE_ADDR saved_msp; \ unsigned int rsize; \ - unsigned int msize; + unsigned int msize; \ + unsigned char flags; + +/* Bits for flags in EXTRA_FRAME_INFO */ +#define TRANSPARENT 0x1 /* This is a transparent frame */ +#define MFP_USED 0x2 /* A memory frame pointer is used */ /* Because INIT_FRAME_PC gets passed fromleaf, that's where we init not only ->pc and ->frame, but all the extra stuff, when called from get_prev_frame_info, that is. */ -#define INIT_EXTRA_FRAME_INFO(fromleaf, fci) \ - init_extra_frame_info(fci); +#define INIT_EXTRA_FRAME_INFO(fromleaf, fci) init_extra_frame_info(fci) void init_extra_frame_info (); -#define INIT_FRAME_PC(fromleaf, fci) \ - init_frame_pc(fromleaf, fci); + +#define INIT_FRAME_PC(fromleaf, fci) init_frame_pc(fromleaf, fci) void init_frame_pc (); + /* FRAME_CHAIN takes a FRAME and produces the frame's chain-pointer. @@ -451,15 +465,16 @@ void init_frame_pc (); /* These are mostly dummies for the 29k because INIT_FRAME_PC sets prev->frame instead. */ -#define FRAME_CHAIN(thisframe) (0) +#define FRAME_CHAIN(thisframe) ((thisframe)->frame + (thisframe)->rsize) + +/* Determine if the frame has a 'previous' and back-traceable frame. */ +#define FRAME_IS_UNCHAINED(frame) ((frame)->flags & TRANSPARENT) -/* Not sure how to figure out where the bottom frame is. There is - no frame for start. In my tests so far the - pc has been outside the text segment, though, so check for that. - FIXME!!! - However, allow a pc in a call dummy. */ -#define FRAME_CHAIN_VALID(chain, thisframe) \ - (!inside_entry_file (FRAME_SAVED_PC (thisframe))) +/* Find the previous frame of a transparent routine. + * For now lets not try and trace through a transparent routine (we might + * have to assume that all transparent routines are traps). + */ +#define FIND_PREV_UNCHAINED_FRAME(frame) 0 /* Define other aspects of the stack frame. */ @@ -517,20 +532,20 @@ extern CORE_ADDR frame_locals_address (); | | We must not disturb | args_out_sproc | it. memory stack |________________| - |____lr1_sproc___| - | | |__retaddr_sproc_| <- gr1 (at start) - |____________|<-msp 0 <-----------mfp_dummy_____| - | | (at start) | | - | arg_slop | | saved regs | - | (16 words) | | gr96-gr124 | - |____________|<-msp 1--after | sr128-sr135 | - | | PUSH_DUMMY_FRAME| | - | struct ret | |________________| - | 17+ | | | - |____________|<- lrp | args_out_dummy | - | struct ret | | (16 words) | - | 16 | |________________| - | (16 words) | |____lr1_dummy___| + |____lr1_sproc___|<-+ + | | |__retaddr_sproc_| | <-- gr1 (at start) + |____________|<-msp 0 <-----------mfp_dummy_____| | + | | (at start) | save regs | | + | arg_slop | | pc0,pc1 | | + | (16 words) | | gr96-gr124 | | + |____________|<-msp 1--after | sr160-sr162 | | + | | PUSH_DUMMY_FRAME| sr128-sr135 | | + | struct ret | |________________| | + | 17+ | | | | + |____________|<- lrp | args_out_dummy | | + | struct ret | | (16 words) | | + | 16 | |________________| | + | (16 words) | |____lr1_dummy___|--+ |____________|<- msp 2--after |_retaddr_dummy__|<- gr1 after | | struct ret | | PUSH_DUMMY_FRAME | margs17+ | area allocated | locals_inf | @@ -562,25 +577,29 @@ extern CORE_ADDR frame_locals_address (); /* Number of special registers (sr128-) to save. */ #define DUMMY_SAVE_SR128 8 +/* Number of special registers (sr160-) to save. */ +#define DUMMY_SAVE_SR160 3 /* Number of general (gr96- or gr64-) registers to save. */ #define DUMMY_SAVE_GREGS 29 #define DUMMY_FRAME_RSIZE \ -(4 /* mfp_dummy */ \ - + DUMMY_SAVE_GREGS * 4 \ - + DUMMY_SAVE_SR128 * 4 \ - + DUMMY_ARG \ +(4 /* mfp_dummy */ \ + + 2 * 4 /* pc0, pc1 */ \ + + DUMMY_SAVE_GREGS * 4 \ + + DUMMY_SAVE_SR160 * 4 \ + + DUMMY_SAVE_SR128 * 4 \ + + DUMMY_ARG \ ) /* Push an empty stack frame, to record the current PC, etc. */ -#define PUSH_DUMMY_FRAME push_dummy_frame(); +#define PUSH_DUMMY_FRAME push_dummy_frame() extern void push_dummy_frame (); /* Discard from the stack the innermost frame, restoring all saved registers. */ -#define POP_FRAME pop_frame (); +#define POP_FRAME pop_frame() extern void pop_frame (); /* This sequence of words is the instructions @@ -588,9 +607,9 @@ extern void pop_frame (); loadm 0, 0, lr2, msp ; load first 16 words of arguments into registers add msp, msp, 16 * 4 ; point to the remaining arguments CONST_INSN: - const gr96,inf - consth gr96,inf - calli lr0, gr96 + const lr0,inf + consth lr0,inf + calli lr0, lr0 aseq 0x40,gr1,gr1 ; nop asneq 0x50,gr1,gr1 ; breakpoint */ @@ -598,8 +617,10 @@ extern void pop_frame (); /* Position of the "const" instruction within CALL_DUMMY in bytes. */ #define CONST_INSN (3 * 4) #if TARGET_BYTE_ORDER == HOST_BYTE_ORDER -#define CALL_DUMMY {0x0400870f, 0x3600827d, 0x157d7d40, 0x03ff60ff, \ - 0x02ff60ff, 0xc8008060, 0x70400101, 0x72500101} +#define CALL_DUMMY {0x0400870f,\ + 0x36008200|(MSP_HW_REGNUM), \ + 0x15000040|(MSP_HW_REGNUM<<8)|(MSP_HW_REGNUM<<16), \ + 0x03ff80ff, 0x02ff80ff, 0xc8008080, 0x70400101, 0x72500101} #else /* Byte order differs. */ you lose #endif /* Byte order differs. */ |