diff options
| -rw-r--r-- | gdb/ChangeLog | 10 | ||||
| -rw-r--r-- | gdb/NEWS | 1 | ||||
| -rw-r--r-- | gdb/TODO | 2 | ||||
| -rw-r--r-- | gdb/config/tic80/tic80.mt | 14 | ||||
| -rw-r--r-- | gdb/config/tic80/tm-tic80.h | 510 | ||||
| -rw-r--r-- | gdb/configure.tgt | 4 | ||||
| -rw-r--r-- | gdb/tic80-tdep.c | 936 |
7 files changed, 744 insertions, 733 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index aa7fc73a184..0693fc50a6c 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,13 @@ +2001-04-03 Andrew Cagney <ac131313@redhat.com> + + Obsolete tic80-*-* target. + * configure.tgt (tic80-*-*): Obsolete. + * config/tic80/tic80.mt: Obsolete. + * config/tic80/tm-tic80.h: Obsolete. + * tic80-tdep.c: Obsolete. + * TODO: Update + * NEWS: Update. + 2001-04-02 J.T. Conklin <jtc@redback.com> * remote-mips.c (S_IROTH): Moved definition from here. @@ -18,6 +18,7 @@ x86 FreeBSD before 2.2 i[3456]86*-freebsd{1,2.[01]}*, Harris/CXUX m88k m88*-harris-cxux* Most ns32k hosts and targets ns32k-*-mach3* ns32k-umax-* ns32k-utek-sysv* ns32k-utek-* +TiC80 32 Bit DSP target tic80-*-* stuff.c (Program to stuff files into a specially prepared space in kdb) kdb-start.c (Main loop for the standalone kernel debugger) @@ -185,7 +185,7 @@ Steps: ns32k-umax-* ns32k umax - yes ns32k-utek-sysv* ns32k merlin merlin yes ns32k-utek-* ns32k - umax yes - tic80-* tic80 - tic80 + tic80-* tic80 - tic80 yes m68*-isi-* m68k isi isi m68*-sony-* m68k news news m68030-sony-* m68k news1000 - diff --git a/gdb/config/tic80/tic80.mt b/gdb/config/tic80/tic80.mt index 5daba66ad0a..d98ea22e32e 100644 --- a/gdb/config/tic80/tic80.mt +++ b/gdb/config/tic80/tic80.mt @@ -1,7 +1,7 @@ -# Target: TI TMS320C80 (MVP) processor -TDEPFILES= tic80-tdep.o -TM_FILE= tm-tic80.h -SIM_OBS = remote-sim.o -SIM = ../sim/tic80/libsim.a -GDBSERVER_DEPFILES= low-sim.o -GDBSERVER_LIBS = ../../sim/tic80/libsim.a ../../bfd/libbfd.a ../../libiberty/libiberty.a -lm ../../intl/libintl.a +# OBSOLETE # Target: TI TMS320C80 (MVP) processor +# OBSOLETE TDEPFILES= tic80-tdep.o +# OBSOLETE TM_FILE= tm-tic80.h +# OBSOLETE SIM_OBS = remote-sim.o +# OBSOLETE SIM = ../sim/tic80/libsim.a +# OBSOLETE GDBSERVER_DEPFILES= low-sim.o +# OBSOLETE GDBSERVER_LIBS = ../../sim/tic80/libsim.a ../../bfd/libbfd.a ../../libiberty/libiberty.a -lm ../../intl/libintl.a diff --git a/gdb/config/tic80/tm-tic80.h b/gdb/config/tic80/tm-tic80.h index 4d5cb2ce034..3392dc286e1 100644 --- a/gdb/config/tic80/tm-tic80.h +++ b/gdb/config/tic80/tm-tic80.h @@ -1,255 +1,255 @@ -/* Parameters for execution on a TI TMS320C80 (MVP) processor. - Copyright 1997, 1999, 2000 - Free Software Foundation, Inc. - - This file is part of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#ifndef TM_TIC80_H -#define TM_TIC80_H - -#include "regcache.h" - -/* Forward declare structs used in prototypes */ -struct frame_info; -struct type; -struct value; -struct symbol; -struct frame_saved_regs; - -#define TARGET_BYTE_ORDER LITTLE_ENDIAN - -#define NUM_REGS 38 - -#define REGISTER_NAMES \ -{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ - "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ - "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \ - "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \ - "pc", "npc", \ - "a0", "a1", "a2", "a3", \ -} - -/* Various dedicated register numbers - FIXME: Shadow updates in sim/tic80/sim-calls.c */ - -#define SP_REGNUM 1 /* Contains address of top of stack */ -#define ARG0_REGNUM 2 /* Contains argument 1 (r3 has high word) */ -#define RET_REGNUM 2 /* Contains function return value */ -#define ARGLAST_REGNUM 12 /* Contains argument 6 (r13 has high word) */ -#define FP_REGNUM 30 /* Contains address of executing stack frame */ -#define LR_REGNUM 31 /* Contains address of caller (link register) */ -#define PC_REGNUM 32 /* Contains program counter (FIXME?) */ -#define NPC_REGNUM 33 /* Contains the next program counter (FIXME?) */ -#define A0_REGNUM 34 /* Accumulator register 0 */ -#define A3_REGNUM 37 /* Accumulator register 1 */ - -#define R0_REGNUM 0 /* General Purpose Register 0 - for sim */ -#define Rn_REGNUM 31 /* Last General Purpose Register - for sim */ -#define An_REGNUM A3_REGNUM /* Last Accumulator register - for sim */ - -/* Total amount of space needed to store our copies of the machine's - register state, the array `registers'. */ - -#define REGISTER_BYTES (((NUM_REGS - 4) * 4) + (4 * 8)) - -/* Index within `registers' of the first byte of the space for - register N. */ - -#define REGISTER_BYTE(N) \ - (((N) >= A0_REGNUM) ? (((N) - A0_REGNUM) * 8 + A0_REGNUM * 4) : ((N) * 4)) - -/* Most registers are 4 bytes */ - -#define REGISTER_SIZE 4 - -/* Some registers are 8 bytes. */ - -#define REGISTER_RAW_SIZE(N) \ - (((N) >= A0_REGNUM) ? 8 : 4) - -/* Largest value REGISTER_RAW_SIZE can have. */ - -#define MAX_REGISTER_RAW_SIZE (8) - -/* All regs are 4 bytes. */ - -#define REGISTER_VIRTUAL_SIZE(N) (REGISTER_RAW_SIZE(N)) - -/* Largest value REGISTER_VIRTUAL_SIZE can have. */ - -#define MAX_REGISTER_VIRTUAL_SIZE (MAX_REGISTER_RAW_SIZE) - -/* Return the GDB type object for the "standard" data type - of data in register N. */ - -#define REGISTER_VIRTUAL_TYPE(N) /* FIXME? */ \ - (((N) >= A0_REGNUM) ? builtin_type_float : builtin_type_int) - -/* Offset from address of function to start of its code. - Zero on most machines. */ - -#define FUNCTION_START_OFFSET 0 - -/* Stack grows downward. */ - -#define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) - -/* Sequence of bytes for breakpoint instruction. - This is padded out to the size of a machine word. */ - -#define BREAKPOINT {0x49, 0x80, 0x00, 0x00} /* FIXME! */ - -/* Amount PC must be decremented by after a breakpoint. - This is often the number of bytes in BREAKPOINT - but not always. */ - -#define DECR_PC_AFTER_BREAK 0 /* FIXME! */ - -/* Discard from the stack the innermost frame, restoring all registers. */ - -#define POP_FRAME tic80_pop_frame(get_current_frame ()) -extern struct frame_info *tic80_pop_frame (struct frame_info *frame); - -/* Return number of bytes at start of arglist that are not really args. */ - -#define FRAME_ARGS_SKIP 0 - -/* Set VAL to the number of args passed to frame described by FI. - Can set VAL to -1, meaning no way to tell. */ -/* We can't tell how many args there are */ - -#define FRAME_NUM_ARGS(fi) (-1) - -#define FRAME_ARGS_SKIP 0 -#define FRAME_ARGS_ADDRESS(fi) (fi)->frame -#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame - -/* Define other aspects of the stack frame. - We keep the offsets of all saved registers, 'cause we need 'em a lot! - We also keep the current size of the stack frame, and the offset of - the frame pointer from the stack pointer (for frameless functions, and - when we're still in the prologue of a function with a frame) */ - -#define EXTRA_FRAME_INFO \ - struct frame_saved_regs fsr; \ - int framesize; \ - int frameoffset; \ - int framereg; - -extern void tic80_init_extra_frame_info (struct frame_info *fi); -#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) tic80_init_extra_frame_info (fi) -#define INIT_FRAME_PC /* Not necessary */ - -/* Put here the code to store, into a struct frame_saved_regs, - the addresses of the saved registers of frame described by FRAME_INFO. - This includes special registers such as pc and fp saved in special - ways in the stack frame. sp is even more special: - the address we return for it IS the sp for the next frame. */ - -#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ - tic80_frame_find_saved_regs(frame_info, &(frame_saved_regs)) -extern void tic80_frame_find_saved_regs (struct frame_info *, - struct frame_saved_regs *); - -/* Advance PC across any function entry prologue instructions - to reach some "real" code. */ - -#define SKIP_PROLOGUE(pc) (tic80_skip_prologue (pc)) -extern CORE_ADDR tic80_skip_prologue (CORE_ADDR pc); - -/* Immediately after a function call, return the saved pc. - Can't always go through the frames for this because on some machines - the new frame is not set up until the new function executes - some instructions. */ - -#define SAVED_PC_AFTER_CALL(frame) read_register (LR_REGNUM) - -/* Describe the pointer in each stack frame to the previous stack frame - (its caller). */ - -/* FRAME_CHAIN takes a frame's nominal address - and produces the frame's chain-pointer. */ - -#define FRAME_CHAIN(thisframe) (CORE_ADDR) tic80_frame_chain (thisframe) -extern CORE_ADDR tic80_frame_chain (struct frame_info *); - -#define FRAME_SAVED_PC(FRAME) tic80_frame_saved_pc (FRAME) -extern CORE_ADDR tic80_frame_saved_pc (struct frame_info *); - -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function. - - We store structs through a pointer passed in R2 */ - -#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \ - write_register (ARG0_REGNUM, STRUCT_ADDR) - -/* Extract from an array REGBUF containing the (raw) register state - a function return value of type TYPE, and copy that, in virtual format, - into VALBUF. */ - -#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ - memcpy ((VALBUF), \ - (char *)(REGBUF) + REGISTER_BYTE (RET_REGNUM) + \ - ((TYPE_LENGTH (TYPE) > 4 ? 8 : 4) - TYPE_LENGTH (TYPE)), \ - TYPE_LENGTH (TYPE)) - -/* Write into appropriate registers a function return value - of type TYPE, given in virtual format. */ - -#define STORE_RETURN_VALUE(TYPE,VALBUF) \ - write_register_bytes(REGISTER_BYTE (RET_REGNUM) + \ - ((TYPE_LENGTH (TYPE) > 4 ? 8:4) - TYPE_LENGTH (TYPE)),\ - (VALBUF), TYPE_LENGTH (TYPE)); - - - -/* PUSH_ARGUMENTS */ -extern CORE_ADDR tic80_push_arguments (int nargs, - struct value **args, - CORE_ADDR sp, - unsigned char struct_return, - CORE_ADDR struct_addr); - -#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \ - (tic80_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)) - -/* PUSH_RETURN_ADDRESS */ -extern CORE_ADDR tic80_push_return_address (CORE_ADDR, CORE_ADDR); -#define PUSH_RETURN_ADDRESS(PC, SP) tic80_push_return_address (PC, SP) - -/* override the standard get_saved_register function with - one that takes account of generic CALL_DUMMY frames */ -#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \ - generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval) - -#define USE_GENERIC_DUMMY_FRAMES 1 -#define CALL_DUMMY {0} -#define CALL_DUMMY_LENGTH (0) -#define CALL_DUMMY_START_OFFSET (0) -#define CALL_DUMMY_BREAKPOINT_OFFSET (0) -#define FIX_CALL_DUMMY(DUMMY1, STARTADDR, FUNADDR, NARGS, ARGS, TYPE, GCCP) -#define CALL_DUMMY_LOCATION AT_ENTRY_POINT -#define CALL_DUMMY_ADDRESS() entry_point_address () - -/* generic dummy frame stuff */ - -#define PUSH_DUMMY_FRAME generic_push_dummy_frame () -#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP) - -#endif /* TM_TIC80_H */ +/* OBSOLETE /* Parameters for execution on a TI TMS320C80 (MVP) processor. */ +/* OBSOLETE Copyright 1997, 1999, 2000 */ +/* OBSOLETE Free Software Foundation, Inc. */ +/* OBSOLETE */ +/* OBSOLETE This file is part of GDB. */ +/* OBSOLETE */ +/* OBSOLETE This program is free software; you can redistribute it and/or modify */ +/* OBSOLETE it under the terms of the GNU General Public License as published by */ +/* OBSOLETE the Free Software Foundation; either version 2 of the License, or */ +/* OBSOLETE (at your option) any later version. */ +/* OBSOLETE */ +/* OBSOLETE This program is distributed in the hope that it will be useful, */ +/* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */ +/* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ +/* OBSOLETE GNU General Public License for more details. */ +/* OBSOLETE */ +/* OBSOLETE You should have received a copy of the GNU General Public License */ +/* OBSOLETE along with this program; if not, write to the Free Software */ +/* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, */ +/* OBSOLETE Boston, MA 02111-1307, USA. */ */ +/* OBSOLETE */ +/* OBSOLETE #ifndef TM_TIC80_H */ +/* OBSOLETE #define TM_TIC80_H */ +/* OBSOLETE */ +/* OBSOLETE #include "regcache.h" */ +/* OBSOLETE */ +/* OBSOLETE /* Forward declare structs used in prototypes */ */ +/* OBSOLETE struct frame_info; */ +/* OBSOLETE struct type; */ +/* OBSOLETE struct value; */ +/* OBSOLETE struct symbol; */ +/* OBSOLETE struct frame_saved_regs; */ +/* OBSOLETE */ +/* OBSOLETE #define TARGET_BYTE_ORDER LITTLE_ENDIAN */ +/* OBSOLETE */ +/* OBSOLETE #define NUM_REGS 38 */ +/* OBSOLETE */ +/* OBSOLETE #define REGISTER_NAMES \ */ +/* OBSOLETE { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ */ +/* OBSOLETE "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ */ +/* OBSOLETE "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \ */ +/* OBSOLETE "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \ */ +/* OBSOLETE "pc", "npc", \ */ +/* OBSOLETE "a0", "a1", "a2", "a3", \ */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Various dedicated register numbers */ +/* OBSOLETE FIXME: Shadow updates in sim/tic80/sim-calls.c */ */ +/* OBSOLETE */ +/* OBSOLETE #define SP_REGNUM 1 /* Contains address of top of stack */ */ +/* OBSOLETE #define ARG0_REGNUM 2 /* Contains argument 1 (r3 has high word) */ */ +/* OBSOLETE #define RET_REGNUM 2 /* Contains function return value */ */ +/* OBSOLETE #define ARGLAST_REGNUM 12 /* Contains argument 6 (r13 has high word) */ */ +/* OBSOLETE #define FP_REGNUM 30 /* Contains address of executing stack frame */ */ +/* OBSOLETE #define LR_REGNUM 31 /* Contains address of caller (link register) */ */ +/* OBSOLETE #define PC_REGNUM 32 /* Contains program counter (FIXME?) */ */ +/* OBSOLETE #define NPC_REGNUM 33 /* Contains the next program counter (FIXME?) */ */ +/* OBSOLETE #define A0_REGNUM 34 /* Accumulator register 0 */ */ +/* OBSOLETE #define A3_REGNUM 37 /* Accumulator register 1 */ */ +/* OBSOLETE */ +/* OBSOLETE #define R0_REGNUM 0 /* General Purpose Register 0 - for sim */ */ +/* OBSOLETE #define Rn_REGNUM 31 /* Last General Purpose Register - for sim */ */ +/* OBSOLETE #define An_REGNUM A3_REGNUM /* Last Accumulator register - for sim */ */ +/* OBSOLETE */ +/* OBSOLETE /* Total amount of space needed to store our copies of the machine's */ +/* OBSOLETE register state, the array `registers'. */ */ +/* OBSOLETE */ +/* OBSOLETE #define REGISTER_BYTES (((NUM_REGS - 4) * 4) + (4 * 8)) */ +/* OBSOLETE */ +/* OBSOLETE /* Index within `registers' of the first byte of the space for */ +/* OBSOLETE register N. */ */ +/* OBSOLETE */ +/* OBSOLETE #define REGISTER_BYTE(N) \ */ +/* OBSOLETE (((N) >= A0_REGNUM) ? (((N) - A0_REGNUM) * 8 + A0_REGNUM * 4) : ((N) * 4)) */ +/* OBSOLETE */ +/* OBSOLETE /* Most registers are 4 bytes */ */ +/* OBSOLETE */ +/* OBSOLETE #define REGISTER_SIZE 4 */ +/* OBSOLETE */ +/* OBSOLETE /* Some registers are 8 bytes. */ */ +/* OBSOLETE */ +/* OBSOLETE #define REGISTER_RAW_SIZE(N) \ */ +/* OBSOLETE (((N) >= A0_REGNUM) ? 8 : 4) */ +/* OBSOLETE */ +/* OBSOLETE /* Largest value REGISTER_RAW_SIZE can have. */ */ +/* OBSOLETE */ +/* OBSOLETE #define MAX_REGISTER_RAW_SIZE (8) */ +/* OBSOLETE */ +/* OBSOLETE /* All regs are 4 bytes. */ */ +/* OBSOLETE */ +/* OBSOLETE #define REGISTER_VIRTUAL_SIZE(N) (REGISTER_RAW_SIZE(N)) */ +/* OBSOLETE */ +/* OBSOLETE /* Largest value REGISTER_VIRTUAL_SIZE can have. */ */ +/* OBSOLETE */ +/* OBSOLETE #define MAX_REGISTER_VIRTUAL_SIZE (MAX_REGISTER_RAW_SIZE) */ +/* OBSOLETE */ +/* OBSOLETE /* Return the GDB type object for the "standard" data type */ +/* OBSOLETE of data in register N. */ */ +/* OBSOLETE */ +/* OBSOLETE #define REGISTER_VIRTUAL_TYPE(N) /* FIXME? */ \ */ +/* OBSOLETE (((N) >= A0_REGNUM) ? builtin_type_float : builtin_type_int) */ +/* OBSOLETE */ +/* OBSOLETE /* Offset from address of function to start of its code. */ +/* OBSOLETE Zero on most machines. */ */ +/* OBSOLETE */ +/* OBSOLETE #define FUNCTION_START_OFFSET 0 */ +/* OBSOLETE */ +/* OBSOLETE /* Stack grows downward. */ */ +/* OBSOLETE */ +/* OBSOLETE #define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) */ +/* OBSOLETE */ +/* OBSOLETE /* Sequence of bytes for breakpoint instruction. */ +/* OBSOLETE This is padded out to the size of a machine word. */ */ +/* OBSOLETE */ +/* OBSOLETE #define BREAKPOINT {0x49, 0x80, 0x00, 0x00} /* FIXME! */ */ +/* OBSOLETE */ +/* OBSOLETE /* Amount PC must be decremented by after a breakpoint. */ +/* OBSOLETE This is often the number of bytes in BREAKPOINT */ +/* OBSOLETE but not always. */ */ +/* OBSOLETE */ +/* OBSOLETE #define DECR_PC_AFTER_BREAK 0 /* FIXME! */ */ +/* OBSOLETE */ +/* OBSOLETE /* Discard from the stack the innermost frame, restoring all registers. */ */ +/* OBSOLETE */ +/* OBSOLETE #define POP_FRAME tic80_pop_frame(get_current_frame ()) */ +/* OBSOLETE extern struct frame_info *tic80_pop_frame (struct frame_info *frame); */ +/* OBSOLETE */ +/* OBSOLETE /* Return number of bytes at start of arglist that are not really args. */ */ +/* OBSOLETE */ +/* OBSOLETE #define FRAME_ARGS_SKIP 0 */ +/* OBSOLETE */ +/* OBSOLETE /* Set VAL to the number of args passed to frame described by FI. */ +/* OBSOLETE Can set VAL to -1, meaning no way to tell. */ */ +/* OBSOLETE /* We can't tell how many args there are */ */ +/* OBSOLETE */ +/* OBSOLETE #define FRAME_NUM_ARGS(fi) (-1) */ +/* OBSOLETE */ +/* OBSOLETE #define FRAME_ARGS_SKIP 0 */ +/* OBSOLETE #define FRAME_ARGS_ADDRESS(fi) (fi)->frame */ +/* OBSOLETE #define FRAME_LOCALS_ADDRESS(fi) (fi)->frame */ +/* OBSOLETE */ +/* OBSOLETE /* Define other aspects of the stack frame. */ +/* OBSOLETE We keep the offsets of all saved registers, 'cause we need 'em a lot! */ +/* OBSOLETE We also keep the current size of the stack frame, and the offset of */ +/* OBSOLETE the frame pointer from the stack pointer (for frameless functions, and */ +/* OBSOLETE when we're still in the prologue of a function with a frame) */ */ +/* OBSOLETE */ +/* OBSOLETE #define EXTRA_FRAME_INFO \ */ +/* OBSOLETE struct frame_saved_regs fsr; \ */ +/* OBSOLETE int framesize; \ */ +/* OBSOLETE int frameoffset; \ */ +/* OBSOLETE int framereg; */ +/* OBSOLETE */ +/* OBSOLETE extern void tic80_init_extra_frame_info (struct frame_info *fi); */ +/* OBSOLETE #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) tic80_init_extra_frame_info (fi) */ +/* OBSOLETE #define INIT_FRAME_PC /* Not necessary */ */ +/* OBSOLETE */ +/* OBSOLETE /* Put here the code to store, into a struct frame_saved_regs, */ +/* OBSOLETE the addresses of the saved registers of frame described by FRAME_INFO. */ +/* OBSOLETE This includes special registers such as pc and fp saved in special */ +/* OBSOLETE ways in the stack frame. sp is even more special: */ +/* OBSOLETE the address we return for it IS the sp for the next frame. */ */ +/* OBSOLETE */ +/* OBSOLETE #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ */ +/* OBSOLETE tic80_frame_find_saved_regs(frame_info, &(frame_saved_regs)) */ +/* OBSOLETE extern void tic80_frame_find_saved_regs (struct frame_info *, */ +/* OBSOLETE struct frame_saved_regs *); */ +/* OBSOLETE */ +/* OBSOLETE /* Advance PC across any function entry prologue instructions */ +/* OBSOLETE to reach some "real" code. */ */ +/* OBSOLETE */ +/* OBSOLETE #define SKIP_PROLOGUE(pc) (tic80_skip_prologue (pc)) */ +/* OBSOLETE extern CORE_ADDR tic80_skip_prologue (CORE_ADDR pc); */ +/* OBSOLETE */ +/* OBSOLETE /* Immediately after a function call, return the saved pc. */ +/* OBSOLETE Can't always go through the frames for this because on some machines */ +/* OBSOLETE the new frame is not set up until the new function executes */ +/* OBSOLETE some instructions. */ */ +/* OBSOLETE */ +/* OBSOLETE #define SAVED_PC_AFTER_CALL(frame) read_register (LR_REGNUM) */ +/* OBSOLETE */ +/* OBSOLETE /* Describe the pointer in each stack frame to the previous stack frame */ +/* OBSOLETE (its caller). */ */ +/* OBSOLETE */ +/* OBSOLETE /* FRAME_CHAIN takes a frame's nominal address */ +/* OBSOLETE and produces the frame's chain-pointer. */ */ +/* OBSOLETE */ +/* OBSOLETE #define FRAME_CHAIN(thisframe) (CORE_ADDR) tic80_frame_chain (thisframe) */ +/* OBSOLETE extern CORE_ADDR tic80_frame_chain (struct frame_info *); */ +/* OBSOLETE */ +/* OBSOLETE #define FRAME_SAVED_PC(FRAME) tic80_frame_saved_pc (FRAME) */ +/* OBSOLETE extern CORE_ADDR tic80_frame_saved_pc (struct frame_info *); */ +/* OBSOLETE */ +/* OBSOLETE /* Store the address of the place in which to copy the structure the */ +/* OBSOLETE subroutine will return. This is called from call_function. */ +/* OBSOLETE */ +/* OBSOLETE We store structs through a pointer passed in R2 */ */ +/* OBSOLETE */ +/* OBSOLETE #define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \ */ +/* OBSOLETE write_register (ARG0_REGNUM, STRUCT_ADDR) */ +/* OBSOLETE */ +/* OBSOLETE /* Extract from an array REGBUF containing the (raw) register state */ +/* OBSOLETE a function return value of type TYPE, and copy that, in virtual format, */ +/* OBSOLETE into VALBUF. */ */ +/* OBSOLETE */ +/* OBSOLETE #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ */ +/* OBSOLETE memcpy ((VALBUF), \ */ +/* OBSOLETE (char *)(REGBUF) + REGISTER_BYTE (RET_REGNUM) + \ */ +/* OBSOLETE ((TYPE_LENGTH (TYPE) > 4 ? 8 : 4) - TYPE_LENGTH (TYPE)), \ */ +/* OBSOLETE TYPE_LENGTH (TYPE)) */ +/* OBSOLETE */ +/* OBSOLETE /* Write into appropriate registers a function return value */ +/* OBSOLETE of type TYPE, given in virtual format. */ */ +/* OBSOLETE */ +/* OBSOLETE #define STORE_RETURN_VALUE(TYPE,VALBUF) \ */ +/* OBSOLETE write_register_bytes(REGISTER_BYTE (RET_REGNUM) + \ */ +/* OBSOLETE ((TYPE_LENGTH (TYPE) > 4 ? 8:4) - TYPE_LENGTH (TYPE)),\ */ +/* OBSOLETE (VALBUF), TYPE_LENGTH (TYPE)); */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE /* PUSH_ARGUMENTS */ */ +/* OBSOLETE extern CORE_ADDR tic80_push_arguments (int nargs, */ +/* OBSOLETE struct value **args, */ +/* OBSOLETE CORE_ADDR sp, */ +/* OBSOLETE unsigned char struct_return, */ +/* OBSOLETE CORE_ADDR struct_addr); */ +/* OBSOLETE */ +/* OBSOLETE #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \ */ +/* OBSOLETE (tic80_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)) */ +/* OBSOLETE */ +/* OBSOLETE /* PUSH_RETURN_ADDRESS */ */ +/* OBSOLETE extern CORE_ADDR tic80_push_return_address (CORE_ADDR, CORE_ADDR); */ +/* OBSOLETE #define PUSH_RETURN_ADDRESS(PC, SP) tic80_push_return_address (PC, SP) */ +/* OBSOLETE */ +/* OBSOLETE /* override the standard get_saved_register function with */ +/* OBSOLETE one that takes account of generic CALL_DUMMY frames */ */ +/* OBSOLETE #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \ */ +/* OBSOLETE generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval) */ +/* OBSOLETE */ +/* OBSOLETE #define USE_GENERIC_DUMMY_FRAMES 1 */ +/* OBSOLETE #define CALL_DUMMY {0} */ +/* OBSOLETE #define CALL_DUMMY_LENGTH (0) */ +/* OBSOLETE #define CALL_DUMMY_START_OFFSET (0) */ +/* OBSOLETE #define CALL_DUMMY_BREAKPOINT_OFFSET (0) */ +/* OBSOLETE #define FIX_CALL_DUMMY(DUMMY1, STARTADDR, FUNADDR, NARGS, ARGS, TYPE, GCCP) */ +/* OBSOLETE #define CALL_DUMMY_LOCATION AT_ENTRY_POINT */ +/* OBSOLETE #define CALL_DUMMY_ADDRESS() entry_point_address () */ +/* OBSOLETE */ +/* OBSOLETE /* generic dummy frame stuff */ */ +/* OBSOLETE */ +/* OBSOLETE #define PUSH_DUMMY_FRAME generic_push_dummy_frame () */ +/* OBSOLETE #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP) */ +/* OBSOLETE */ +/* OBSOLETE #endif /* TM_TIC80_H */ */ diff --git a/gdb/configure.tgt b/gdb/configure.tgt index faa20cbbc5a..4469b5965f0 100644 --- a/gdb/configure.tgt +++ b/gdb/configure.tgt @@ -287,8 +287,8 @@ sparc86x-*-*) gdb_target=sparclite ;; sparc64-*-linux*) gdb_target=sp64linux ;; sparc64-*-*) gdb_target=sp64 ;; -tic80-*-*) gdb_target=tic80 - configdirs="${configdirs} gdbserver" ;; +# OBSOLETE tic80-*-*) gdb_target=tic80 +# OBSOLETE configdirs="${configdirs} gdbserver" ;; vax-*-*) gdb_target=vax ;; diff --git a/gdb/tic80-tdep.c b/gdb/tic80-tdep.c index f334eeafb32..3454576e81d 100644 --- a/gdb/tic80-tdep.c +++ b/gdb/tic80-tdep.c @@ -1,468 +1,468 @@ -/* Target-dependent code for the TI TMS320C80 (MVP) for GDB, the GNU debugger. - Copyright 1996, 1997, 1999, 2000, 2001 Free Software Foundation, Inc. - - This file is part of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include "value.h" -#include "frame.h" -#include "inferior.h" -#include "obstack.h" -#include "target.h" -#include "bfd.h" -#include "gdb_string.h" -#include "gdbcore.h" -#include "symfile.h" -#include "regcache.h" - -/* Function: frame_find_saved_regs - Return the frame_saved_regs structure for the frame. - Doesn't really work for dummy frames, but it does pass back - an empty frame_saved_regs, so I guess that's better than total failure */ - -void -tic80_frame_find_saved_regs (struct frame_info *fi, - struct frame_saved_regs *regaddr) -{ - memcpy (regaddr, &fi->fsr, sizeof (struct frame_saved_regs)); -} - -/* Function: skip_prologue - Find end of function prologue. */ - -CORE_ADDR -tic80_skip_prologue (CORE_ADDR pc) -{ - CORE_ADDR func_addr, func_end; - struct symtab_and_line sal; - - /* See what the symbol table says */ - - if (find_pc_partial_function (pc, NULL, &func_addr, &func_end)) - { - sal = find_pc_line (func_addr, 0); - - if (sal.line != 0 && sal.end < func_end) - return sal.end; - else - /* Either there's no line info, or the line after the prologue is after - the end of the function. In this case, there probably isn't a - prologue. */ - return pc; - } - - /* We can't find the start of this function, so there's nothing we can do. */ - return pc; -} - -/* Function: tic80_scan_prologue - This function decodes the target function prologue to determine: - 1) the size of the stack frame - 2) which registers are saved on it - 3) the offsets of saved regs - 4) the frame size - This information is stored in the "extra" fields of the frame_info. */ - -static void -tic80_scan_prologue (struct frame_info *fi) -{ - struct symtab_and_line sal; - CORE_ADDR prologue_start, prologue_end, current_pc; - - /* Assume there is no frame until proven otherwise. */ - fi->framereg = SP_REGNUM; - fi->framesize = 0; - fi->frameoffset = 0; - - /* this code essentially duplicates skip_prologue, - but we need the start address below. */ - - if (find_pc_partial_function (fi->pc, NULL, &prologue_start, &prologue_end)) - { - sal = find_pc_line (prologue_start, 0); - - if (sal.line == 0) /* no line info, use current PC */ - if (prologue_start != entry_point_address ()) - prologue_end = fi->pc; - else - return; /* _start has no frame or prologue */ - else if (sal.end < prologue_end) /* next line begins after fn end */ - prologue_end = sal.end; /* (probably means no prologue) */ - } - else -/* FIXME */ - prologue_end = prologue_start + 40; /* We're in the boondocks: allow for */ - /* 16 pushes, an add, and "mv fp,sp" */ - - prologue_end = min (prologue_end, fi->pc); - - /* Now search the prologue looking for instructions that set up the - frame pointer, adjust the stack pointer, and save registers. */ - - for (current_pc = prologue_start; current_pc < prologue_end; current_pc += 4) - { - unsigned int insn; - int regno; - int offset = 0; - - insn = read_memory_unsigned_integer (current_pc, 4); - - if ((insn & 0x301000) == 0x301000) /* Long immediate? */ -/* FIXME - set offset for long immediate instructions */ - current_pc += 4; - else - { - offset = insn & 0x7fff; /* extract 15-bit offset */ - if (offset & 0x4000) /* if negative, sign-extend */ - offset = -(0x8000 - offset); - } - - if ((insn & 0x7fd0000) == 0x590000) /* st.{w,d} reg, xx(r1) */ - { - regno = ((insn >> 27) & 0x1f); - fi->fsr.regs[regno] = offset; - if (insn & 0x8000) /* 64-bit store (st.d)? */ - fi->fsr.regs[regno + 1] = offset + 4; - } - else if ((insn & 0xffff8000) == 0x086c8000) /* addu xx, r1, r1 */ - fi->framesize = -offset; - else if ((insn & 0xffff8000) == 0xf06c8000) /* addu xx, r1, r30 */ - { - fi->framereg = FP_REGNUM; /* fp is now valid */ - fi->frameoffset = offset; - break; /* end of stack adjustments */ - } - else if (insn == 0xf03b2001) /* addu r1, r0, r30 */ - { - fi->framereg = FP_REGNUM; /* fp is now valid */ - fi->frameoffset = 0; - break; /* end of stack adjustments */ - } - else -/* FIXME - handle long immediate instructions */ - break; /* anything else isn't prologue */ - } -} - -/* Function: init_extra_frame_info - This function actually figures out the frame address for a given pc and - sp. This is tricky on the c80 because we sometimes don't use an explicit - frame pointer, and the previous stack pointer isn't necessarily recorded - on the stack. The only reliable way to get this info is to - examine the prologue. */ - -void -tic80_init_extra_frame_info (struct frame_info *fi) -{ - int reg; - - if (fi->next) - fi->pc = FRAME_SAVED_PC (fi->next); - - /* Because zero is a valid register offset relative to SP, we initialize - the offsets to -1 to indicate unused entries. */ - for (reg = 0; reg < NUM_REGS; reg++) - fi->fsr.regs[reg] = -1; - - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - { - /* We need to setup fi->frame here because run_stack_dummy gets it wrong - by assuming it's always FP. */ - fi->frame = generic_read_register_dummy (fi->pc, fi->frame, SP_REGNUM); - fi->framesize = 0; - fi->frameoffset = 0; - return; - } - else - { - tic80_scan_prologue (fi); - - if (!fi->next) /* this is the innermost frame? */ - fi->frame = read_register (fi->framereg); - else - /* not the innermost frame */ - /* If this function uses FP as the frame register, and the function - it called saved the FP, get the saved FP. */ if (fi->framereg == FP_REGNUM && - fi->next->fsr.regs[FP_REGNUM] != (unsigned) -1) - fi->frame = read_memory_integer (fi->next->fsr.regs[FP_REGNUM], 4); - - /* Convert SP-relative offsets of saved registers to real addresses. */ - for (reg = 0; reg < NUM_REGS; reg++) - if (fi->fsr.regs[reg] == (unsigned) -1) - fi->fsr.regs[reg] = 0; /* unused entry */ - else - fi->fsr.regs[reg] += fi->frame - fi->frameoffset; - } -} - -/* Function: find_callers_reg - Find REGNUM on the stack. Otherwise, it's in an active register. One thing - we might want to do here is to check REGNUM against the clobber mask, and - somehow flag it as invalid if it isn't saved on the stack somewhere. This - would provide a graceful failure mode when trying to get the value of - caller-saves registers for an inner frame. */ - -CORE_ADDR -tic80_find_callers_reg (struct frame_info *fi, int regnum) -{ - for (; fi; fi = fi->next) - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - return generic_read_register_dummy (fi->pc, fi->frame, regnum); - else if (fi->fsr.regs[regnum] != 0) - return read_memory_integer (fi->fsr.regs[regnum], - REGISTER_RAW_SIZE (regnum)); - return read_register (regnum); -} - -/* Function: frame_chain - Given a GDB frame, determine the address of the calling function's frame. - This will be used to create a new GDB frame struct, and then - INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame. - For c80, we save the frame size when we initialize the frame_info. */ - -CORE_ADDR -tic80_frame_chain (struct frame_info *fi) -{ - CORE_ADDR fn_start, callers_pc, fp; - - /* is this a dummy frame? */ - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - return fi->frame; /* dummy frame same as caller's frame */ - - /* is caller-of-this a dummy frame? */ - callers_pc = FRAME_SAVED_PC (fi); /* find out who called us: */ - fp = tic80_find_callers_reg (fi, FP_REGNUM); - if (PC_IN_CALL_DUMMY (callers_pc, fp, fp)) - return fp; /* dummy frame's frame may bear no relation to ours */ - - if (find_pc_partial_function (fi->pc, 0, &fn_start, 0)) - if (fn_start == entry_point_address ()) - return 0; /* in _start fn, don't chain further */ - - if (fi->framereg == FP_REGNUM) - return tic80_find_callers_reg (fi, FP_REGNUM); - else - return fi->frame + fi->framesize; -} - -/* Function: pop_frame - Discard from the stack the innermost frame, - restoring all saved registers. */ - -struct frame_info * -tic80_pop_frame (struct frame_info *frame) -{ - int regnum; - - if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) - generic_pop_dummy_frame (); - else - { - for (regnum = 0; regnum < NUM_REGS; regnum++) - if (frame->fsr.regs[regnum] != 0) - write_register (regnum, - read_memory_integer (frame->fsr.regs[regnum], 4)); - - write_register (PC_REGNUM, FRAME_SAVED_PC (frame)); - write_register (SP_REGNUM, read_register (FP_REGNUM)); -#if 0 - if (read_register (PSW_REGNUM) & 0x80) - write_register (SPU_REGNUM, read_register (SP_REGNUM)); - else - write_register (SPI_REGNUM, read_register (SP_REGNUM)); -#endif - } - flush_cached_frames (); - return NULL; -} - -/* Function: frame_saved_pc - Find the caller of this frame. We do this by seeing if LR_REGNUM is saved - in the stack anywhere, otherwise we get it from the registers. */ - -CORE_ADDR -tic80_frame_saved_pc (struct frame_info *fi) -{ - if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) - return generic_read_register_dummy (fi->pc, fi->frame, PC_REGNUM); - else - return tic80_find_callers_reg (fi, LR_REGNUM); -} - -/* Function: tic80_push_return_address (pc, sp) - Set up the return address for the inferior function call. - Necessary for targets that don't actually execute a JSR/BSR instruction - (ie. when using an empty CALL_DUMMY) */ - -CORE_ADDR -tic80_push_return_address (CORE_ADDR pc, CORE_ADDR sp) -{ - write_register (LR_REGNUM, CALL_DUMMY_ADDRESS ()); - return sp; -} - - -/* Function: push_arguments - Setup the function arguments for calling a function in the inferior. - - On the TI C80 architecture, there are six register pairs (R2/R3 to R12/13) - which are dedicated for passing function arguments. Up to the first six - arguments (depending on size) may go into these registers. - The rest go on the stack. - - Arguments that are smaller than 4 bytes will still take up a whole - register or a whole 32-bit word on the stack, and will be - right-justified in the register or the stack word. This includes - chars, shorts, and small aggregate types. - - Arguments that are four bytes or less in size are placed in the - even-numbered register of a register pair, and the odd-numbered - register is not used. - - Arguments of 8 bytes size (such as floating point doubles) are placed - in a register pair. The least significant 32-bit word is placed in - the even-numbered register, and the most significant word in the - odd-numbered register. - - Aggregate types with sizes between 4 and 8 bytes are passed - entirely on the stack, and are left-justified within the - double-word (as opposed to aggregates smaller than 4 bytes - which are right-justified). - - Aggregates of greater than 8 bytes are first copied onto the stack, - and then a pointer to the copy is passed in the place of the normal - argument (either in a register if available, or on the stack). - - Functions that must return an aggregate type can return it in the - normal return value registers (R2 and R3) if its size is 8 bytes or - less. For larger return values, the caller must allocate space for - the callee to copy the return value to. A pointer to this space is - passed as an implicit first argument, always in R0. */ - -CORE_ADDR -tic80_push_arguments (int nargs, value_ptr *args, CORE_ADDR sp, - unsigned char struct_return, CORE_ADDR struct_addr) -{ - int stack_offset, stack_alloc; - int argreg; - int argnum; - struct type *type; - CORE_ADDR regval; - char *val; - char valbuf[4]; - int len; - int odd_sized_struct; - int is_struct; - - /* first force sp to a 4-byte alignment */ - sp = sp & ~3; - - argreg = ARG0_REGNUM; - /* The "struct return pointer" pseudo-argument goes in R0 */ - if (struct_return) - write_register (argreg++, struct_addr); - - /* Now make sure there's space on the stack */ - for (argnum = 0, stack_alloc = 0; - argnum < nargs; argnum++) - stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3); - sp -= stack_alloc; /* make room on stack for args */ - - - /* Now load as many as possible of the first arguments into - registers, and push the rest onto the stack. There are 16 bytes - in four registers available. Loop thru args from first to last. */ - - argreg = ARG0_REGNUM; - for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++) - { - type = VALUE_TYPE (args[argnum]); - len = TYPE_LENGTH (type); - memset (valbuf, 0, sizeof (valbuf)); - val = (char *) VALUE_CONTENTS (args[argnum]); - -/* FIXME -- tic80 can take doubleword arguments in register pairs */ - is_struct = (type->code == TYPE_CODE_STRUCT); - odd_sized_struct = 0; - - if (!is_struct) - { - if (len < 4) - { /* value gets right-justified in the register or stack word */ - memcpy (valbuf + (4 - len), val, len); - val = valbuf; - } - if (len > 4 && (len & 3) != 0) - odd_sized_struct = 1; /* such structs go entirely on stack */ - } - else - { - /* Structs are always passed by reference. */ - write_register (argreg, sp + stack_offset); - argreg++; - } - - while (len > 0) - { - if (is_struct || argreg > ARGLAST_REGNUM || odd_sized_struct) - { /* must go on the stack */ - write_memory (sp + stack_offset, val, 4); - stack_offset += 4; - } - /* NOTE WELL!!!!! This is not an "else if" clause!!! - That's because some things get passed on the stack - AND in the registers! */ - if (!is_struct && argreg <= ARGLAST_REGNUM) - { /* there's room in a register */ - regval = extract_address (val, REGISTER_RAW_SIZE (argreg)); - write_register (argreg, regval); - argreg += 2; /* FIXME -- what about doubleword args? */ - } - /* Store the value 4 bytes at a time. This means that things - larger than 4 bytes may go partly in registers and partly - on the stack. */ - len -= REGISTER_RAW_SIZE (argreg); - val += REGISTER_RAW_SIZE (argreg); - } - } - return sp; -} - -/* Function: tic80_write_sp - Because SP is really a read-only register that mirrors either SPU or SPI, - we must actually write one of those two as well, depending on PSW. */ - -void -tic80_write_sp (CORE_ADDR val) -{ -#if 0 - unsigned long psw = read_register (PSW_REGNUM); - - if (psw & 0x80) /* stack mode: user or interrupt */ - write_register (SPU_REGNUM, val); - else - write_register (SPI_REGNUM, val); -#endif - write_register (SP_REGNUM, val); -} - -void -_initialize_tic80_tdep (void) -{ - tm_print_insn = print_insn_tic80; -} +/* OBSOLETE /* Target-dependent code for the TI TMS320C80 (MVP) for GDB, the GNU debugger. */ +/* OBSOLETE Copyright 1996, 1997, 1999, 2000, 2001 Free Software Foundation, Inc. */ +/* OBSOLETE */ +/* OBSOLETE This file is part of GDB. */ +/* OBSOLETE */ +/* OBSOLETE This program is free software; you can redistribute it and/or modify */ +/* OBSOLETE it under the terms of the GNU General Public License as published by */ +/* OBSOLETE the Free Software Foundation; either version 2 of the License, or */ +/* OBSOLETE (at your option) any later version. */ +/* OBSOLETE */ +/* OBSOLETE This program is distributed in the hope that it will be useful, */ +/* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */ +/* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ +/* OBSOLETE GNU General Public License for more details. */ +/* OBSOLETE */ +/* OBSOLETE You should have received a copy of the GNU General Public License */ +/* OBSOLETE along with this program; if not, write to the Free Software */ +/* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, */ +/* OBSOLETE Boston, MA 02111-1307, USA. */ */ +/* OBSOLETE */ +/* OBSOLETE #include "defs.h" */ +/* OBSOLETE #include "value.h" */ +/* OBSOLETE #include "frame.h" */ +/* OBSOLETE #include "inferior.h" */ +/* OBSOLETE #include "obstack.h" */ +/* OBSOLETE #include "target.h" */ +/* OBSOLETE #include "bfd.h" */ +/* OBSOLETE #include "gdb_string.h" */ +/* OBSOLETE #include "gdbcore.h" */ +/* OBSOLETE #include "symfile.h" */ +/* OBSOLETE #include "regcache.h" */ +/* OBSOLETE */ +/* OBSOLETE /* Function: frame_find_saved_regs */ +/* OBSOLETE Return the frame_saved_regs structure for the frame. */ +/* OBSOLETE Doesn't really work for dummy frames, but it does pass back */ +/* OBSOLETE an empty frame_saved_regs, so I guess that's better than total failure */ */ +/* OBSOLETE */ +/* OBSOLETE void */ +/* OBSOLETE tic80_frame_find_saved_regs (struct frame_info *fi, */ +/* OBSOLETE struct frame_saved_regs *regaddr) */ +/* OBSOLETE { */ +/* OBSOLETE memcpy (regaddr, &fi->fsr, sizeof (struct frame_saved_regs)); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Function: skip_prologue */ +/* OBSOLETE Find end of function prologue. */ */ +/* OBSOLETE */ +/* OBSOLETE CORE_ADDR */ +/* OBSOLETE tic80_skip_prologue (CORE_ADDR pc) */ +/* OBSOLETE { */ +/* OBSOLETE CORE_ADDR func_addr, func_end; */ +/* OBSOLETE struct symtab_and_line sal; */ +/* OBSOLETE */ +/* OBSOLETE /* See what the symbol table says */ */ +/* OBSOLETE */ +/* OBSOLETE if (find_pc_partial_function (pc, NULL, &func_addr, &func_end)) */ +/* OBSOLETE { */ +/* OBSOLETE sal = find_pc_line (func_addr, 0); */ +/* OBSOLETE */ +/* OBSOLETE if (sal.line != 0 && sal.end < func_end) */ +/* OBSOLETE return sal.end; */ +/* OBSOLETE else */ +/* OBSOLETE /* Either there's no line info, or the line after the prologue is after */ +/* OBSOLETE the end of the function. In this case, there probably isn't a */ +/* OBSOLETE prologue. */ */ +/* OBSOLETE return pc; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* We can't find the start of this function, so there's nothing we can do. */ */ +/* OBSOLETE return pc; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Function: tic80_scan_prologue */ +/* OBSOLETE This function decodes the target function prologue to determine: */ +/* OBSOLETE 1) the size of the stack frame */ +/* OBSOLETE 2) which registers are saved on it */ +/* OBSOLETE 3) the offsets of saved regs */ +/* OBSOLETE 4) the frame size */ +/* OBSOLETE This information is stored in the "extra" fields of the frame_info. */ */ +/* OBSOLETE */ +/* OBSOLETE static void */ +/* OBSOLETE tic80_scan_prologue (struct frame_info *fi) */ +/* OBSOLETE { */ +/* OBSOLETE struct symtab_and_line sal; */ +/* OBSOLETE CORE_ADDR prologue_start, prologue_end, current_pc; */ +/* OBSOLETE */ +/* OBSOLETE /* Assume there is no frame until proven otherwise. */ */ +/* OBSOLETE fi->framereg = SP_REGNUM; */ +/* OBSOLETE fi->framesize = 0; */ +/* OBSOLETE fi->frameoffset = 0; */ +/* OBSOLETE */ +/* OBSOLETE /* this code essentially duplicates skip_prologue, */ +/* OBSOLETE but we need the start address below. */ */ +/* OBSOLETE */ +/* OBSOLETE if (find_pc_partial_function (fi->pc, NULL, &prologue_start, &prologue_end)) */ +/* OBSOLETE { */ +/* OBSOLETE sal = find_pc_line (prologue_start, 0); */ +/* OBSOLETE */ +/* OBSOLETE if (sal.line == 0) /* no line info, use current PC */ */ +/* OBSOLETE if (prologue_start != entry_point_address ()) */ +/* OBSOLETE prologue_end = fi->pc; */ +/* OBSOLETE else */ +/* OBSOLETE return; /* _start has no frame or prologue */ */ +/* OBSOLETE else if (sal.end < prologue_end) /* next line begins after fn end */ */ +/* OBSOLETE prologue_end = sal.end; /* (probably means no prologue) */ */ +/* OBSOLETE } */ +/* OBSOLETE else */ +/* OBSOLETE /* FIXME */ */ +/* OBSOLETE prologue_end = prologue_start + 40; /* We're in the boondocks: allow for */ */ +/* OBSOLETE /* 16 pushes, an add, and "mv fp,sp" */ */ +/* OBSOLETE */ +/* OBSOLETE prologue_end = min (prologue_end, fi->pc); */ +/* OBSOLETE */ +/* OBSOLETE /* Now search the prologue looking for instructions that set up the */ +/* OBSOLETE frame pointer, adjust the stack pointer, and save registers. */ */ +/* OBSOLETE */ +/* OBSOLETE for (current_pc = prologue_start; current_pc < prologue_end; current_pc += 4) */ +/* OBSOLETE { */ +/* OBSOLETE unsigned int insn; */ +/* OBSOLETE int regno; */ +/* OBSOLETE int offset = 0; */ +/* OBSOLETE */ +/* OBSOLETE insn = read_memory_unsigned_integer (current_pc, 4); */ +/* OBSOLETE */ +/* OBSOLETE if ((insn & 0x301000) == 0x301000) /* Long immediate? */ */ +/* OBSOLETE /* FIXME - set offset for long immediate instructions */ */ +/* OBSOLETE current_pc += 4; */ +/* OBSOLETE else */ +/* OBSOLETE { */ +/* OBSOLETE offset = insn & 0x7fff; /* extract 15-bit offset */ */ +/* OBSOLETE if (offset & 0x4000) /* if negative, sign-extend */ */ +/* OBSOLETE offset = -(0x8000 - offset); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE if ((insn & 0x7fd0000) == 0x590000) /* st.{w,d} reg, xx(r1) */ */ +/* OBSOLETE { */ +/* OBSOLETE regno = ((insn >> 27) & 0x1f); */ +/* OBSOLETE fi->fsr.regs[regno] = offset; */ +/* OBSOLETE if (insn & 0x8000) /* 64-bit store (st.d)? */ */ +/* OBSOLETE fi->fsr.regs[regno + 1] = offset + 4; */ +/* OBSOLETE } */ +/* OBSOLETE else if ((insn & 0xffff8000) == 0x086c8000) /* addu xx, r1, r1 */ */ +/* OBSOLETE fi->framesize = -offset; */ +/* OBSOLETE else if ((insn & 0xffff8000) == 0xf06c8000) /* addu xx, r1, r30 */ */ +/* OBSOLETE { */ +/* OBSOLETE fi->framereg = FP_REGNUM; /* fp is now valid */ */ +/* OBSOLETE fi->frameoffset = offset; */ +/* OBSOLETE break; /* end of stack adjustments */ */ +/* OBSOLETE } */ +/* OBSOLETE else if (insn == 0xf03b2001) /* addu r1, r0, r30 */ */ +/* OBSOLETE { */ +/* OBSOLETE fi->framereg = FP_REGNUM; /* fp is now valid */ */ +/* OBSOLETE fi->frameoffset = 0; */ +/* OBSOLETE break; /* end of stack adjustments */ */ +/* OBSOLETE } */ +/* OBSOLETE else */ +/* OBSOLETE /* FIXME - handle long immediate instructions */ */ +/* OBSOLETE break; /* anything else isn't prologue */ */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Function: init_extra_frame_info */ +/* OBSOLETE This function actually figures out the frame address for a given pc and */ +/* OBSOLETE sp. This is tricky on the c80 because we sometimes don't use an explicit */ +/* OBSOLETE frame pointer, and the previous stack pointer isn't necessarily recorded */ +/* OBSOLETE on the stack. The only reliable way to get this info is to */ +/* OBSOLETE examine the prologue. */ */ +/* OBSOLETE */ +/* OBSOLETE void */ +/* OBSOLETE tic80_init_extra_frame_info (struct frame_info *fi) */ +/* OBSOLETE { */ +/* OBSOLETE int reg; */ +/* OBSOLETE */ +/* OBSOLETE if (fi->next) */ +/* OBSOLETE fi->pc = FRAME_SAVED_PC (fi->next); */ +/* OBSOLETE */ +/* OBSOLETE /* Because zero is a valid register offset relative to SP, we initialize */ +/* OBSOLETE the offsets to -1 to indicate unused entries. */ */ +/* OBSOLETE for (reg = 0; reg < NUM_REGS; reg++) */ +/* OBSOLETE fi->fsr.regs[reg] = -1; */ +/* OBSOLETE */ +/* OBSOLETE if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) */ +/* OBSOLETE { */ +/* OBSOLETE /* We need to setup fi->frame here because run_stack_dummy gets it wrong */ +/* OBSOLETE by assuming it's always FP. */ */ +/* OBSOLETE fi->frame = generic_read_register_dummy (fi->pc, fi->frame, SP_REGNUM); */ +/* OBSOLETE fi->framesize = 0; */ +/* OBSOLETE fi->frameoffset = 0; */ +/* OBSOLETE return; */ +/* OBSOLETE } */ +/* OBSOLETE else */ +/* OBSOLETE { */ +/* OBSOLETE tic80_scan_prologue (fi); */ +/* OBSOLETE */ +/* OBSOLETE if (!fi->next) /* this is the innermost frame? */ */ +/* OBSOLETE fi->frame = read_register (fi->framereg); */ +/* OBSOLETE else */ +/* OBSOLETE /* not the innermost frame */ */ +/* OBSOLETE /* If this function uses FP as the frame register, and the function */ +/* OBSOLETE it called saved the FP, get the saved FP. */ if (fi->framereg == FP_REGNUM && */ +/* OBSOLETE fi->next->fsr.regs[FP_REGNUM] != (unsigned) -1) */ +/* OBSOLETE fi->frame = read_memory_integer (fi->next->fsr.regs[FP_REGNUM], 4); */ +/* OBSOLETE */ +/* OBSOLETE /* Convert SP-relative offsets of saved registers to real addresses. */ */ +/* OBSOLETE for (reg = 0; reg < NUM_REGS; reg++) */ +/* OBSOLETE if (fi->fsr.regs[reg] == (unsigned) -1) */ +/* OBSOLETE fi->fsr.regs[reg] = 0; /* unused entry */ */ +/* OBSOLETE else */ +/* OBSOLETE fi->fsr.regs[reg] += fi->frame - fi->frameoffset; */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Function: find_callers_reg */ +/* OBSOLETE Find REGNUM on the stack. Otherwise, it's in an active register. One thing */ +/* OBSOLETE we might want to do here is to check REGNUM against the clobber mask, and */ +/* OBSOLETE somehow flag it as invalid if it isn't saved on the stack somewhere. This */ +/* OBSOLETE would provide a graceful failure mode when trying to get the value of */ +/* OBSOLETE caller-saves registers for an inner frame. */ */ +/* OBSOLETE */ +/* OBSOLETE CORE_ADDR */ +/* OBSOLETE tic80_find_callers_reg (struct frame_info *fi, int regnum) */ +/* OBSOLETE { */ +/* OBSOLETE for (; fi; fi = fi->next) */ +/* OBSOLETE if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) */ +/* OBSOLETE return generic_read_register_dummy (fi->pc, fi->frame, regnum); */ +/* OBSOLETE else if (fi->fsr.regs[regnum] != 0) */ +/* OBSOLETE return read_memory_integer (fi->fsr.regs[regnum], */ +/* OBSOLETE REGISTER_RAW_SIZE (regnum)); */ +/* OBSOLETE return read_register (regnum); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Function: frame_chain */ +/* OBSOLETE Given a GDB frame, determine the address of the calling function's frame. */ +/* OBSOLETE This will be used to create a new GDB frame struct, and then */ +/* OBSOLETE INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame. */ +/* OBSOLETE For c80, we save the frame size when we initialize the frame_info. */ */ +/* OBSOLETE */ +/* OBSOLETE CORE_ADDR */ +/* OBSOLETE tic80_frame_chain (struct frame_info *fi) */ +/* OBSOLETE { */ +/* OBSOLETE CORE_ADDR fn_start, callers_pc, fp; */ +/* OBSOLETE */ +/* OBSOLETE /* is this a dummy frame? */ */ +/* OBSOLETE if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) */ +/* OBSOLETE return fi->frame; /* dummy frame same as caller's frame */ */ +/* OBSOLETE */ +/* OBSOLETE /* is caller-of-this a dummy frame? */ */ +/* OBSOLETE callers_pc = FRAME_SAVED_PC (fi); /* find out who called us: */ */ +/* OBSOLETE fp = tic80_find_callers_reg (fi, FP_REGNUM); */ +/* OBSOLETE if (PC_IN_CALL_DUMMY (callers_pc, fp, fp)) */ +/* OBSOLETE return fp; /* dummy frame's frame may bear no relation to ours */ */ +/* OBSOLETE */ +/* OBSOLETE if (find_pc_partial_function (fi->pc, 0, &fn_start, 0)) */ +/* OBSOLETE if (fn_start == entry_point_address ()) */ +/* OBSOLETE return 0; /* in _start fn, don't chain further */ */ +/* OBSOLETE */ +/* OBSOLETE if (fi->framereg == FP_REGNUM) */ +/* OBSOLETE return tic80_find_callers_reg (fi, FP_REGNUM); */ +/* OBSOLETE else */ +/* OBSOLETE return fi->frame + fi->framesize; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Function: pop_frame */ +/* OBSOLETE Discard from the stack the innermost frame, */ +/* OBSOLETE restoring all saved registers. */ */ +/* OBSOLETE */ +/* OBSOLETE struct frame_info * */ +/* OBSOLETE tic80_pop_frame (struct frame_info *frame) */ +/* OBSOLETE { */ +/* OBSOLETE int regnum; */ +/* OBSOLETE */ +/* OBSOLETE if (PC_IN_CALL_DUMMY (frame->pc, frame->frame, frame->frame)) */ +/* OBSOLETE generic_pop_dummy_frame (); */ +/* OBSOLETE else */ +/* OBSOLETE { */ +/* OBSOLETE for (regnum = 0; regnum < NUM_REGS; regnum++) */ +/* OBSOLETE if (frame->fsr.regs[regnum] != 0) */ +/* OBSOLETE write_register (regnum, */ +/* OBSOLETE read_memory_integer (frame->fsr.regs[regnum], 4)); */ +/* OBSOLETE */ +/* OBSOLETE write_register (PC_REGNUM, FRAME_SAVED_PC (frame)); */ +/* OBSOLETE write_register (SP_REGNUM, read_register (FP_REGNUM)); */ +/* OBSOLETE #if 0 */ +/* OBSOLETE if (read_register (PSW_REGNUM) & 0x80) */ +/* OBSOLETE write_register (SPU_REGNUM, read_register (SP_REGNUM)); */ +/* OBSOLETE else */ +/* OBSOLETE write_register (SPI_REGNUM, read_register (SP_REGNUM)); */ +/* OBSOLETE #endif */ +/* OBSOLETE } */ +/* OBSOLETE flush_cached_frames (); */ +/* OBSOLETE return NULL; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Function: frame_saved_pc */ +/* OBSOLETE Find the caller of this frame. We do this by seeing if LR_REGNUM is saved */ +/* OBSOLETE in the stack anywhere, otherwise we get it from the registers. */ */ +/* OBSOLETE */ +/* OBSOLETE CORE_ADDR */ +/* OBSOLETE tic80_frame_saved_pc (struct frame_info *fi) */ +/* OBSOLETE { */ +/* OBSOLETE if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame)) */ +/* OBSOLETE return generic_read_register_dummy (fi->pc, fi->frame, PC_REGNUM); */ +/* OBSOLETE else */ +/* OBSOLETE return tic80_find_callers_reg (fi, LR_REGNUM); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Function: tic80_push_return_address (pc, sp) */ +/* OBSOLETE Set up the return address for the inferior function call. */ +/* OBSOLETE Necessary for targets that don't actually execute a JSR/BSR instruction */ +/* OBSOLETE (ie. when using an empty CALL_DUMMY) */ */ +/* OBSOLETE */ +/* OBSOLETE CORE_ADDR */ +/* OBSOLETE tic80_push_return_address (CORE_ADDR pc, CORE_ADDR sp) */ +/* OBSOLETE { */ +/* OBSOLETE write_register (LR_REGNUM, CALL_DUMMY_ADDRESS ()); */ +/* OBSOLETE return sp; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE /* Function: push_arguments */ +/* OBSOLETE Setup the function arguments for calling a function in the inferior. */ +/* OBSOLETE */ +/* OBSOLETE On the TI C80 architecture, there are six register pairs (R2/R3 to R12/13) */ +/* OBSOLETE which are dedicated for passing function arguments. Up to the first six */ +/* OBSOLETE arguments (depending on size) may go into these registers. */ +/* OBSOLETE The rest go on the stack. */ +/* OBSOLETE */ +/* OBSOLETE Arguments that are smaller than 4 bytes will still take up a whole */ +/* OBSOLETE register or a whole 32-bit word on the stack, and will be */ +/* OBSOLETE right-justified in the register or the stack word. This includes */ +/* OBSOLETE chars, shorts, and small aggregate types. */ +/* OBSOLETE */ +/* OBSOLETE Arguments that are four bytes or less in size are placed in the */ +/* OBSOLETE even-numbered register of a register pair, and the odd-numbered */ +/* OBSOLETE register is not used. */ +/* OBSOLETE */ +/* OBSOLETE Arguments of 8 bytes size (such as floating point doubles) are placed */ +/* OBSOLETE in a register pair. The least significant 32-bit word is placed in */ +/* OBSOLETE the even-numbered register, and the most significant word in the */ +/* OBSOLETE odd-numbered register. */ +/* OBSOLETE */ +/* OBSOLETE Aggregate types with sizes between 4 and 8 bytes are passed */ +/* OBSOLETE entirely on the stack, and are left-justified within the */ +/* OBSOLETE double-word (as opposed to aggregates smaller than 4 bytes */ +/* OBSOLETE which are right-justified). */ +/* OBSOLETE */ +/* OBSOLETE Aggregates of greater than 8 bytes are first copied onto the stack, */ +/* OBSOLETE and then a pointer to the copy is passed in the place of the normal */ +/* OBSOLETE argument (either in a register if available, or on the stack). */ +/* OBSOLETE */ +/* OBSOLETE Functions that must return an aggregate type can return it in the */ +/* OBSOLETE normal return value registers (R2 and R3) if its size is 8 bytes or */ +/* OBSOLETE less. For larger return values, the caller must allocate space for */ +/* OBSOLETE the callee to copy the return value to. A pointer to this space is */ +/* OBSOLETE passed as an implicit first argument, always in R0. */ */ +/* OBSOLETE */ +/* OBSOLETE CORE_ADDR */ +/* OBSOLETE tic80_push_arguments (int nargs, value_ptr *args, CORE_ADDR sp, */ +/* OBSOLETE unsigned char struct_return, CORE_ADDR struct_addr) */ +/* OBSOLETE { */ +/* OBSOLETE int stack_offset, stack_alloc; */ +/* OBSOLETE int argreg; */ +/* OBSOLETE int argnum; */ +/* OBSOLETE struct type *type; */ +/* OBSOLETE CORE_ADDR regval; */ +/* OBSOLETE char *val; */ +/* OBSOLETE char valbuf[4]; */ +/* OBSOLETE int len; */ +/* OBSOLETE int odd_sized_struct; */ +/* OBSOLETE int is_struct; */ +/* OBSOLETE */ +/* OBSOLETE /* first force sp to a 4-byte alignment */ */ +/* OBSOLETE sp = sp & ~3; */ +/* OBSOLETE */ +/* OBSOLETE argreg = ARG0_REGNUM; */ +/* OBSOLETE /* The "struct return pointer" pseudo-argument goes in R0 */ */ +/* OBSOLETE if (struct_return) */ +/* OBSOLETE write_register (argreg++, struct_addr); */ +/* OBSOLETE */ +/* OBSOLETE /* Now make sure there's space on the stack */ */ +/* OBSOLETE for (argnum = 0, stack_alloc = 0; */ +/* OBSOLETE argnum < nargs; argnum++) */ +/* OBSOLETE stack_alloc += ((TYPE_LENGTH (VALUE_TYPE (args[argnum])) + 3) & ~3); */ +/* OBSOLETE sp -= stack_alloc; /* make room on stack for args */ */ +/* OBSOLETE */ +/* OBSOLETE */ +/* OBSOLETE /* Now load as many as possible of the first arguments into */ +/* OBSOLETE registers, and push the rest onto the stack. There are 16 bytes */ +/* OBSOLETE in four registers available. Loop thru args from first to last. */ */ +/* OBSOLETE */ +/* OBSOLETE argreg = ARG0_REGNUM; */ +/* OBSOLETE for (argnum = 0, stack_offset = 0; argnum < nargs; argnum++) */ +/* OBSOLETE { */ +/* OBSOLETE type = VALUE_TYPE (args[argnum]); */ +/* OBSOLETE len = TYPE_LENGTH (type); */ +/* OBSOLETE memset (valbuf, 0, sizeof (valbuf)); */ +/* OBSOLETE val = (char *) VALUE_CONTENTS (args[argnum]); */ +/* OBSOLETE */ +/* OBSOLETE /* FIXME -- tic80 can take doubleword arguments in register pairs */ */ +/* OBSOLETE is_struct = (type->code == TYPE_CODE_STRUCT); */ +/* OBSOLETE odd_sized_struct = 0; */ +/* OBSOLETE */ +/* OBSOLETE if (!is_struct) */ +/* OBSOLETE { */ +/* OBSOLETE if (len < 4) */ +/* OBSOLETE { /* value gets right-justified in the register or stack word */ */ +/* OBSOLETE memcpy (valbuf + (4 - len), val, len); */ +/* OBSOLETE val = valbuf; */ +/* OBSOLETE } */ +/* OBSOLETE if (len > 4 && (len & 3) != 0) */ +/* OBSOLETE odd_sized_struct = 1; /* such structs go entirely on stack */ */ +/* OBSOLETE } */ +/* OBSOLETE else */ +/* OBSOLETE { */ +/* OBSOLETE /* Structs are always passed by reference. */ */ +/* OBSOLETE write_register (argreg, sp + stack_offset); */ +/* OBSOLETE argreg++; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE while (len > 0) */ +/* OBSOLETE { */ +/* OBSOLETE if (is_struct || argreg > ARGLAST_REGNUM || odd_sized_struct) */ +/* OBSOLETE { /* must go on the stack */ */ +/* OBSOLETE write_memory (sp + stack_offset, val, 4); */ +/* OBSOLETE stack_offset += 4; */ +/* OBSOLETE } */ +/* OBSOLETE /* NOTE WELL!!!!! This is not an "else if" clause!!! */ +/* OBSOLETE That's because some things get passed on the stack */ +/* OBSOLETE AND in the registers! */ */ +/* OBSOLETE if (!is_struct && argreg <= ARGLAST_REGNUM) */ +/* OBSOLETE { /* there's room in a register */ */ +/* OBSOLETE regval = extract_address (val, REGISTER_RAW_SIZE (argreg)); */ +/* OBSOLETE write_register (argreg, regval); */ +/* OBSOLETE argreg += 2; /* FIXME -- what about doubleword args? */ */ +/* OBSOLETE } */ +/* OBSOLETE /* Store the value 4 bytes at a time. This means that things */ +/* OBSOLETE larger than 4 bytes may go partly in registers and partly */ +/* OBSOLETE on the stack. */ */ +/* OBSOLETE len -= REGISTER_RAW_SIZE (argreg); */ +/* OBSOLETE val += REGISTER_RAW_SIZE (argreg); */ +/* OBSOLETE } */ +/* OBSOLETE } */ +/* OBSOLETE return sp; */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE /* Function: tic80_write_sp */ +/* OBSOLETE Because SP is really a read-only register that mirrors either SPU or SPI, */ +/* OBSOLETE we must actually write one of those two as well, depending on PSW. */ */ +/* OBSOLETE */ +/* OBSOLETE void */ +/* OBSOLETE tic80_write_sp (CORE_ADDR val) */ +/* OBSOLETE { */ +/* OBSOLETE #if 0 */ +/* OBSOLETE unsigned long psw = read_register (PSW_REGNUM); */ +/* OBSOLETE */ +/* OBSOLETE if (psw & 0x80) /* stack mode: user or interrupt */ */ +/* OBSOLETE write_register (SPU_REGNUM, val); */ +/* OBSOLETE else */ +/* OBSOLETE write_register (SPI_REGNUM, val); */ +/* OBSOLETE #endif */ +/* OBSOLETE write_register (SP_REGNUM, val); */ +/* OBSOLETE } */ +/* OBSOLETE */ +/* OBSOLETE void */ +/* OBSOLETE _initialize_tic80_tdep (void) */ +/* OBSOLETE { */ +/* OBSOLETE tm_print_insn = print_insn_tic80; */ +/* OBSOLETE } */ |