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changed d10v instruction patterns to d30v ones and made them defines rather

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than sprinkled throughout the code.  changes to several functions; backtraces
now work and calling functions in the inferior partially works.  Registers
do not yet track the frame.
This commit is contained in:
David Taylor
1997-12-11 00:14:33 +00:00
parent 23850e9219
commit 7359fb1d01
3 changed files with 373 additions and 138 deletions
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40
gdb/config/d30v/tm-d30v.h
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@@ -32,9 +32,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* these are the addresses the D30V-EVA board maps data */
/* and instruction memory to. */
#define DMEM_START 0x2000000
#define IMEM_START 0x1000000
#define STACK_START 0x2007ffe
#define DMEM_START 0x20000000
#define IMEM_START 0x00000000 /* was 0x10000000 */
#define STACK_START 0x20007ffe
#ifdef __STDC__ /* Forward decls for prototypes */
struct frame_info;
@@ -87,7 +87,7 @@ extern CORE_ADDR d30v_skip_prologue ();
but do serve to get the desired values when passed to read_register. */
#define R0_REGNUM 0
#define FP_REGNUM 11
#define FP_REGNUM 61
#define LR_REGNUM 62
#define SP_REGNUM 63
#define SPI_REGNUM 64 /* Interrupt stack pointer */
@@ -218,17 +218,24 @@ extern void d30v_init_extra_frame_info PARAMS (( int fromleaf, struct frame_info
(FRAMELESS) = frameless_look_for_prologue(FI)
#define FRAME_CHAIN(FRAME) d30v_frame_chain(FRAME)
#if 0
#define FRAME_CHAIN_VALID(chain,frame) \
((chain) != 0 && (frame) != 0 && (frame)->pc > IMEM_START)
#else
#define FRAME_CHAIN_VALID(chain,fi) \
((chain) != 0 && (fi) != 0 && (fi)->frame <= STACK_START)
#endif
#define FRAME_SAVED_PC(FRAME) ((FRAME)->return_pc)
#define FRAME_ARGS_ADDRESS(fi) (fi)->frame
#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame
/* Immediately after a function call, return the saved pc. We can't */
/* use frame->return_pc beause that is determined by reading R13 off the */
/*stack and that may not be written yet. */
#define INIT_FRAME_PC(fromleaf, prev) d30v_init_frame_pc(fromleaf, prev)
#define SAVED_PC_AFTER_CALL(frame) ((read_register(LR_REGNUM) << 2) | IMEM_START)
/* Immediately after a function call, return the saved pc. We can't */
/* use frame->return_pc beause that is determined by reading R62 off the */
/* stack and that may not be written yet. */
#define SAVED_PC_AFTER_CALL(frame) (read_register(LR_REGNUM))
/* Set VAL to the number of args passed to frame described by FI.
Can set VAL to -1, meaning no way to tell. */
@@ -254,14 +261,15 @@ extern void d30v_frame_find_saved_regs PARAMS ((struct frame_info *, struct fram
#define NAMES_HAVE_UNDERSCORE
/*
DUMMY FRAMES. Need these to support inferior function calls. They work
like this on D30V: First we set a breakpoint at 0 or __start. Then we push
all the registers onto the stack. Then put the function arguments in the proper
registers and set r13 to our breakpoint address. Finally call the function directly.
When it hits the breakpoint, clear the break point and pop the old register contents
off the stack.
*/
/* DUMMY FRAMES. Need these to support inferior function calls.
They work like this on D30V:
First we set a breakpoint at 0 or __start.
Then we push all the registers onto the stack.
Then put the function arguments in the proper registers and set r13
to our breakpoint address.
Finally call the function directly.
When it hits the breakpoint, clear the break point and pop the old
register contents off the stack. */
#define CALL_DUMMY { }
#define PUSH_DUMMY_FRAME