Fri Nov 1 13:59:28 1996 Martin M. Hunt <hunt@pizza.cygnus.com>
* tm-d10v.h: Major fixes to support inferior function calls and proper stack backtracing on D10V-EVA board.
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Martin Hunt
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21260fe16f
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61e5b759cd
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@ -30,6 +30,20 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#define FUNCTION_START_OFFSET 0
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/* these are the addresses the D10V-EVA board maps data */
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/* and instruction memory to. */
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#define DMEM_START 0x2000000
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#define IMEM_START 0x1000000
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#define STACK_START 0x2007ffe
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#ifdef __STDC__ /* Forward decls for prototypes */
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struct frame_info;
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struct frame_saved_regs;
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struct type;
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struct value;
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#endif
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/* Advance PC across any function entry prologue instructions
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to reach some "real" code. */
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@ -37,7 +51,6 @@ extern CORE_ADDR d10v_skip_prologue ();
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#define SKIP_PROLOGUE(ip) \
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{(ip) = d10v_skip_prologue(ip);}
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#define SAVED_PC_AFTER_CALL(frame) (read_register(LR_REGNUM) << 2 )
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/* Stack grows downward. */
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#define INNER_THAN <
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@ -142,11 +155,14 @@ extern CORE_ADDR d10v_skip_prologue ();
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#define EXTRA_FRAME_INFO \
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CORE_ADDR return_pc; \
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int dummy; \
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int frameless; \
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int size;
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#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
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d10v_init_extra_frame_info(fromleaf, fi)
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extern void d10v_init_extra_frame_info PARAMS (( int fromleaf, struct frame_info *fi ));
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/* A macro that tells us whether the function invocation represented
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by FI does not have a frame on the stack associated with it. If it
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does not, FRAMELESS is set to 1, else 0. */
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@ -155,13 +171,20 @@ extern CORE_ADDR d10v_skip_prologue ();
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(FRAMELESS) = frameless_look_for_prologue(FI)
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#define FRAME_CHAIN(FRAME) d10v_frame_chain(FRAME)
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#define FRAME_CHAIN_VALID(chain,frame) \
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((chain) != 0 && (frame) != 0 && (frame)->pc > IMEM_START)
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#define FRAME_SAVED_PC(FRAME) ((FRAME)->return_pc)
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#define FRAME_ARGS_ADDRESS(fi) (fi)->frame
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#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame
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/* Immediately after a function call, return the saved pc. We can't */
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/* use frame->return_pc beause that is determined by reading R13 off the */
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/*stack and that may not be written yet. */
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#define SAVED_PC_AFTER_CALL(frame) ((read_register(LR_REGNUM) << 2) | IMEM_START)
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/* Set VAL to the number of args passed to frame described by FI.
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Can set VAL to -1, meaning no way to tell. */
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/* We can't tell how many args there are */
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#define FRAME_NUM_ARGS(val,fi) (val = -1)
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@ -170,6 +193,7 @@ extern CORE_ADDR d10v_skip_prologue ();
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#define FRAME_ARGS_SKIP 0
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/* Put here the code to store, into a struct frame_saved_regs,
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the addresses of the saved registers of frame described by FRAME_INFO.
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This includes special registers such as pc and fp saved in special
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@ -179,6 +203,8 @@ extern CORE_ADDR d10v_skip_prologue ();
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#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
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d10v_frame_find_saved_regs(frame_info, &(frame_saved_regs))
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extern void d10v_frame_find_saved_regs PARAMS ((struct frame_info *, struct frame_saved_regs *));
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#define NAMES_HAVE_UNDERSCORE
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/*
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@ -200,17 +226,11 @@ extern CORE_ADDR d10v_call_dummy_address PARAMS ((void));
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#define CALL_DUMMY_ADDRESS() d10v_call_dummy_address()
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#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
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d10v_fix_call_dummy (dummyname, pc, fun, nargs, args, type, gcc_p)
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sp = d10v_fix_call_dummy (dummyname, pc, fun, nargs, args, type, gcc_p)
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#define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
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((pc>>2) >= CALL_DUMMY_ADDRESS () \
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&& (pc>>2) <= (CALL_DUMMY_ADDRESS () + DECR_PC_AFTER_BREAK))
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#define PC_IN_CALL_DUMMY(pc, sp, frame_address) ( pc == IMEM_START + 4 )
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#ifdef __STDC__ /* Forward decls for prototypes */
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struct type;
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struct value;
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#endif
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extern void d10v_fix_call_dummy PARAMS ((char *, CORE_ADDR, CORE_ADDR,
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extern CORE_ADDR d10v_fix_call_dummy PARAMS ((char *, CORE_ADDR, CORE_ADDR,
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int, struct value **,
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struct type *, int));
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#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
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@ -231,6 +251,7 @@ d10v_extract_return_value PARAMS ((struct type *, char *, char *));
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/* Discard from the stack the innermost frame,
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restoring all saved registers. */
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#define POP_FRAME d10v_pop_frame();
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extern void d10v_pop_frame PARAMS((void));
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#define REGISTER_SIZE 2
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@ -240,13 +261,17 @@ d10v_extract_return_value PARAMS ((struct type *, char *, char *));
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# define LONGEST long
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#endif
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void d10v_write_pc PARAMS ((LONGEST val, int pid));
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void d10v_write_pc PARAMS ((CORE_ADDR val, int pid));
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CORE_ADDR d10v_read_pc PARAMS ((int pid));
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void d10v_write_sp PARAMS ((CORE_ADDR val));
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CORE_ADDR d10v_read_sp PARAMS ((void));
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#define TARGET_READ_PC(pid) d10v_read_pc (pid)
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#define TARGET_WRITE_PC(val,pid) d10v_write_pc (val, pid)
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#define TARGET_READ_FP() d10v_read_fp ()
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#define TARGET_WRITE_FP(val) d10v_write_fp (val)
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#define TARGET_READ_FP() d10v_read_sp ()
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#define TARGET_WRITE_FP(val) d10v_write_sp (val)
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#define TARGET_READ_SP() d10v_read_sp ()
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#define TARGET_WRITE_SP(val) d10v_write_sp (val)
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/* Number of bits in the appropriate type */
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#define TARGET_INT_BIT (2 * TARGET_CHAR_BIT)
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