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f81824a9ed
* NEWS: Mention that sparclet-*-* and sparclite-*-* have been made obsolete. * sparc-tdep.c: Obsolete SPARCLET and SPARCLITE code. * sparcl-stub.c: Obsolete file. * config/sparc/tm-sparclet.h: Obsolete file. * sparclet-stub.c: Obsolete file. * sparclet-rom.c: Obsolete file. * sparcl-tdep.c: Obsolete file. * config/sparc/tm-sparclite.h: Obsolete file. * config/sparc/sparclite.mt: Obsolete file. * config/sparc/sparclet.mt: Obsolete file. * configure.tgt: Make sparclet-*-*, sparclite-*-*, and sparc86x-*-* obsolete.
1168 lines
42 KiB
C
1168 lines
42 KiB
C
// OBSOLETE /****************************************************************************
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// OBSOLETE
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// OBSOLETE THIS SOFTWARE IS NOT COPYRIGHTED
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// OBSOLETE
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// OBSOLETE HP offers the following for use in the public domain. HP makes no
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// OBSOLETE warranty with regard to the software or it's performance and the
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// OBSOLETE user accepts the software "AS IS" with all faults.
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// OBSOLETE
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// OBSOLETE HP DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD
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// OBSOLETE TO THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OBSOLETE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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// OBSOLETE
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// OBSOLETE ****************************************************************************/
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// OBSOLETE
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// OBSOLETE /****************************************************************************
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// OBSOLETE * Header: remcom.c,v 1.34 91/03/09 12:29:49 glenne Exp $
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// OBSOLETE *
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// OBSOLETE * Module name: remcom.c $
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// OBSOLETE * Revision: 1.34 $
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// OBSOLETE * Date: 91/03/09 12:29:49 $
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// OBSOLETE * Contributor: Lake Stevens Instrument Division$
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// OBSOLETE *
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// OBSOLETE * Description: low level support for gdb debugger. $
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// OBSOLETE *
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// OBSOLETE * Considerations: only works on target hardware $
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// OBSOLETE *
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// OBSOLETE * Written by: Glenn Engel $
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// OBSOLETE * ModuleState: Experimental $
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// OBSOLETE *
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// OBSOLETE * NOTES: See Below $
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// OBSOLETE *
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// OBSOLETE * Modified for SPARC by Stu Grossman, Cygnus Support.
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// OBSOLETE * Based on sparc-stub.c, it's modified for SPARClite Debug Unit hardware
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// OBSOLETE * breakpoint support to create sparclite-stub.c, by Kung Hsu, Cygnus Support.
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// OBSOLETE *
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// OBSOLETE * This code has been extensively tested on the Fujitsu SPARClite demo board.
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// OBSOLETE *
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// OBSOLETE * To enable debugger support, two things need to happen. One, a
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// OBSOLETE * call to set_debug_traps() is necessary in order to allow any breakpoints
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// OBSOLETE * or error conditions to be properly intercepted and reported to gdb.
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// OBSOLETE * Two, a breakpoint needs to be generated to begin communication. This
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// OBSOLETE * is most easily accomplished by a call to breakpoint(). Breakpoint()
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// OBSOLETE * simulates a breakpoint by executing a trap #1.
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// OBSOLETE *
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// OBSOLETE *************
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// OBSOLETE *
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// OBSOLETE * The following gdb commands are supported:
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// OBSOLETE *
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// OBSOLETE * command function Return value
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// OBSOLETE *
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// OBSOLETE * g return the value of the CPU registers hex data or ENN
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// OBSOLETE * G set the value of the CPU registers OK or ENN
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// OBSOLETE * P set the value of a single CPU register OK or ENN
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// OBSOLETE *
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// OBSOLETE * mAA..AA,LLLL Read LLLL bytes at address AA..AA hex data or ENN
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// OBSOLETE * MAA..AA,LLLL: Write LLLL bytes at address AA.AA OK or ENN
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// OBSOLETE *
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// OBSOLETE * c Resume at current address SNN ( signal NN)
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// OBSOLETE * cAA..AA Continue at address AA..AA SNN
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// OBSOLETE *
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// OBSOLETE * s Step one instruction SNN
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// OBSOLETE * sAA..AA Step one instruction from AA..AA SNN
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// OBSOLETE *
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// OBSOLETE * k kill
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// OBSOLETE *
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// OBSOLETE * ? What was the last sigval ? SNN (signal NN)
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// OBSOLETE *
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// OBSOLETE * All commands and responses are sent with a packet which includes a
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// OBSOLETE * checksum. A packet consists of
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// OBSOLETE *
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// OBSOLETE * $<packet info>#<checksum>.
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// OBSOLETE *
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// OBSOLETE * where
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// OBSOLETE * <packet info> :: <characters representing the command or response>
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// OBSOLETE * <checksum> :: <two hex digits computed as modulo 256 sum of <packetinfo>>
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// OBSOLETE *
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// OBSOLETE * When a packet is received, it is first acknowledged with either '+' or '-'.
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// OBSOLETE * '+' indicates a successful transfer. '-' indicates a failed transfer.
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// OBSOLETE *
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// OBSOLETE * Example:
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// OBSOLETE *
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// OBSOLETE * Host: Reply:
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// OBSOLETE * $m0,10#2a +$00010203040506070809101112131415#42
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// OBSOLETE *
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// OBSOLETE ****************************************************************************/
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// OBSOLETE
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// OBSOLETE #include <string.h>
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// OBSOLETE #include <signal.h>
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// OBSOLETE
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// OBSOLETE /************************************************************************
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// OBSOLETE *
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// OBSOLETE * external low-level support routines
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// OBSOLETE */
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// OBSOLETE
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// OBSOLETE extern void putDebugChar(); /* write a single character */
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// OBSOLETE extern int getDebugChar(); /* read and return a single char */
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// OBSOLETE
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// OBSOLETE /************************************************************************/
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// OBSOLETE /* BUFMAX defines the maximum number of characters in inbound/outbound buffers*/
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// OBSOLETE /* at least NUMREGBYTES*2 are needed for register packets */
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// OBSOLETE #define BUFMAX 2048
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// OBSOLETE
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// OBSOLETE static int initialized = 0; /* !0 means we've been initialized */
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// OBSOLETE static int remote_debug = 0; /* turn on verbose debugging */
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// OBSOLETE
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// OBSOLETE extern void breakinst();
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// OBSOLETE void _cprint();
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// OBSOLETE static void hw_breakpoint();
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// OBSOLETE static void set_mem_fault_trap();
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// OBSOLETE static void get_in_break_mode();
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// OBSOLETE static unsigned char *mem2hex();
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// OBSOLETE
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// OBSOLETE static const char hexchars[]="0123456789abcdef";
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// OBSOLETE
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// OBSOLETE #define NUMREGS 121
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// OBSOLETE
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// OBSOLETE static unsigned long saved_stack_pointer;
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// OBSOLETE
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// OBSOLETE /* Number of bytes of registers. */
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// OBSOLETE #define NUMREGBYTES (NUMREGS * 4)
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// OBSOLETE enum regnames { G0, G1, G2, G3, G4, G5, G6, G7,
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// OBSOLETE O0, O1, O2, O3, O4, O5, SP, O7,
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// OBSOLETE L0, L1, L2, L3, L4, L5, L6, L7,
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// OBSOLETE I0, I1, I2, I3, I4, I5, FP, I7,
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// OBSOLETE
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// OBSOLETE F0, F1, F2, F3, F4, F5, F6, F7,
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// OBSOLETE F8, F9, F10, F11, F12, F13, F14, F15,
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// OBSOLETE F16, F17, F18, F19, F20, F21, F22, F23,
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// OBSOLETE F24, F25, F26, F27, F28, F29, F30, F31,
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// OBSOLETE
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// OBSOLETE Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR,
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// OBSOLETE CCSR, CCPR, CCCRCR, CCOR, CCOBR, CCIBR, CCIR, UNUSED1,
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// OBSOLETE
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// OBSOLETE ASR1, ASR15, ASR17, ASR18, ASR19, ASR20, ASR21, ASR22,
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// OBSOLETE /* the following not actually implemented */
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// OBSOLETE AWR0, AWR1, AWR2, AWR3, AWR4, AWR5, AWR6, AWR7,
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// OBSOLETE AWR8, AWR9, AWR10, AWR11, AWR12, AWR13, AWR14, AWR15,
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// OBSOLETE AWR16, AWR17, AWR18, AWR19, AWR20, AWR21, AWR22, AWR23,
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// OBSOLETE AWR24, AWR25, AWR26, AWR27, AWR28, AWR29, AWR30, AWR31,
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// OBSOLETE APSR
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// OBSOLETE };
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// OBSOLETE
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// OBSOLETE /*************************** ASSEMBLY CODE MACROS *************************/
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// OBSOLETE /* */
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// OBSOLETE
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// OBSOLETE extern void trap_low();
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// OBSOLETE
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// OBSOLETE asm("
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// OBSOLETE .reserve trapstack, 1000 * 4, \"bss\", 8
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// OBSOLETE
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// OBSOLETE .data
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// OBSOLETE .align 4
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// OBSOLETE
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// OBSOLETE in_trap_handler:
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// OBSOLETE .word 0
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// OBSOLETE
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// OBSOLETE .text
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// OBSOLETE .align 4
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// OBSOLETE
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// OBSOLETE ! This function is called when any SPARC trap (except window overflow or
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// OBSOLETE ! underflow) occurs. It makes sure that the invalid register window is still
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// OBSOLETE ! available before jumping into C code. It will also restore the world if you
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// OBSOLETE ! return from handle_exception.
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// OBSOLETE !
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// OBSOLETE ! On entry, trap_low expects l1 and l2 to contain pc and npc respectivly.
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// OBSOLETE
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// OBSOLETE .globl _trap_low
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// OBSOLETE _trap_low:
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// OBSOLETE mov %psr, %l0
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// OBSOLETE mov %wim, %l3
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// OBSOLETE
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// OBSOLETE srl %l3, %l0, %l4 ! wim >> cwp
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// OBSOLETE and %l4, 0xff, %l4 ! Mask off windows 28, 29
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// OBSOLETE cmp %l4, 1
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// OBSOLETE bne window_fine ! Branch if not in the invalid window
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// OBSOLETE nop
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// OBSOLETE
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// OBSOLETE ! Handle window overflow
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// OBSOLETE
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// OBSOLETE mov %g1, %l4 ! Save g1, we use it to hold the wim
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// OBSOLETE srl %l3, 1, %g1 ! Rotate wim right
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// OBSOLETE and %g1, 0xff, %g1 ! Mask off windows 28, 29
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// OBSOLETE tst %g1
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// OBSOLETE bg good_wim ! Branch if new wim is non-zero
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// OBSOLETE nop
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// OBSOLETE
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// OBSOLETE ! At this point, we need to bring a 1 into the high order bit of the wim.
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// OBSOLETE ! Since we don't want to make any assumptions about the number of register
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// OBSOLETE ! windows, we figure it out dynamically so as to setup the wim correctly.
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// OBSOLETE
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// OBSOLETE ! The normal way doesn't work on the sparclet as register windows
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// OBSOLETE ! 28 and 29 are special purpose windows.
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// OBSOLETE !not %g1 ! Fill g1 with ones
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// OBSOLETE !mov %g1, %wim ! Fill the wim with ones
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// OBSOLETE !nop
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// OBSOLETE !nop
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// OBSOLETE !nop
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// OBSOLETE !mov %wim, %g1 ! Read back the wim
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// OBSOLETE !inc %g1 ! Now g1 has 1 just to left of wim
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// OBSOLETE !srl %g1, 1, %g1 ! Now put 1 at top of wim
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// OBSOLETE
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// OBSOLETE mov 0x80, %g1 ! Hack for sparclet
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// OBSOLETE
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// OBSOLETE ! This doesn't work on the sparclet.
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// OBSOLETE !mov %g0, %wim ! Clear wim so that subsequent save
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// OBSOLETE ! won't trap
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// OBSOLETE andn %l3, 0xff, %l5 ! Clear wim but not windows 28, 29
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// OBSOLETE mov %l5, %wim
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// OBSOLETE nop
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// OBSOLETE nop
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// OBSOLETE nop
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// OBSOLETE
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// OBSOLETE good_wim:
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// OBSOLETE save %g0, %g0, %g0 ! Slip into next window
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// OBSOLETE mov %g1, %wim ! Install the new wim
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// OBSOLETE
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// OBSOLETE std %l0, [%sp + 0 * 4] ! save L & I registers
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// OBSOLETE std %l2, [%sp + 2 * 4]
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// OBSOLETE std %l4, [%sp + 4 * 4]
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// OBSOLETE std %l6, [%sp + 6 * 4]
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// OBSOLETE
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// OBSOLETE std %i0, [%sp + 8 * 4]
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// OBSOLETE std %i2, [%sp + 10 * 4]
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// OBSOLETE std %i4, [%sp + 12 * 4]
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// OBSOLETE std %i6, [%sp + 14 * 4]
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// OBSOLETE
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// OBSOLETE restore ! Go back to trap window.
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// OBSOLETE mov %l4, %g1 ! Restore %g1
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// OBSOLETE
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// OBSOLETE window_fine:
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// OBSOLETE sethi %hi(in_trap_handler), %l4
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// OBSOLETE ld [%lo(in_trap_handler) + %l4], %l5
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// OBSOLETE tst %l5
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// OBSOLETE bg recursive_trap
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// OBSOLETE inc %l5
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// OBSOLETE
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// OBSOLETE set trapstack+1000*4, %sp ! Switch to trap stack
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// OBSOLETE
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// OBSOLETE recursive_trap:
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// OBSOLETE st %l5, [%lo(in_trap_handler) + %l4]
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// OBSOLETE sub %sp,(16+1+6+1+88)*4,%sp ! Make room for input & locals
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// OBSOLETE ! + hidden arg + arg spill
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// OBSOLETE ! + doubleword alignment
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// OBSOLETE ! + registers[121]
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// OBSOLETE
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// OBSOLETE std %g0, [%sp + (24 + 0) * 4] ! registers[Gx]
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// OBSOLETE std %g2, [%sp + (24 + 2) * 4]
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// OBSOLETE std %g4, [%sp + (24 + 4) * 4]
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// OBSOLETE std %g6, [%sp + (24 + 6) * 4]
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// OBSOLETE
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// OBSOLETE std %i0, [%sp + (24 + 8) * 4] ! registers[Ox]
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// OBSOLETE std %i2, [%sp + (24 + 10) * 4]
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// OBSOLETE std %i4, [%sp + (24 + 12) * 4]
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// OBSOLETE std %i6, [%sp + (24 + 14) * 4]
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// OBSOLETE
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// OBSOLETE ! FP regs (sparclet doesn't have fpu)
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// OBSOLETE
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// OBSOLETE mov %y, %l4
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// OBSOLETE mov %tbr, %l5
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// OBSOLETE st %l4, [%sp + (24 + 64) * 4] ! Y
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// OBSOLETE st %l0, [%sp + (24 + 65) * 4] ! PSR
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// OBSOLETE st %l3, [%sp + (24 + 66) * 4] ! WIM
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// OBSOLETE st %l5, [%sp + (24 + 67) * 4] ! TBR
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// OBSOLETE st %l1, [%sp + (24 + 68) * 4] ! PC
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// OBSOLETE st %l2, [%sp + (24 + 69) * 4] ! NPC
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// OBSOLETE ! CPSR and FPSR not impl
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// OBSOLETE or %l0, 0xf20, %l4
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// OBSOLETE mov %l4, %psr ! Turn on traps, disable interrupts
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// OBSOLETE nop
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// OBSOLETE nop
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// OBSOLETE nop
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// OBSOLETE
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// OBSOLETE ! Save coprocessor state.
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// OBSOLETE ! See SK/demo/hdlc_demo/ldc_swap_context.S.
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// OBSOLETE
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// OBSOLETE mov %psr, %l0
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// OBSOLETE sethi %hi(0x2000), %l5 ! EC bit in PSR
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// OBSOLETE or %l5, %l0, %l5
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// OBSOLETE mov %l5, %psr ! enable coprocessor
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// OBSOLETE nop ! 3 nops after write to %psr (needed?)
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// OBSOLETE nop
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// OBSOLETE nop
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// OBSOLETE crdcxt %ccsr, %l1 ! capture CCSR
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// OBSOLETE mov 0x6, %l2
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// OBSOLETE cwrcxt %l2, %ccsr ! set CCP state machine for CCFR
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// OBSOLETE crdcxt %ccfr, %l2 ! capture CCOR
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// OBSOLETE cwrcxt %l2, %ccfr ! tickle CCFR
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// OBSOLETE crdcxt %ccfr, %l3 ! capture CCOBR
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// OBSOLETE cwrcxt %l3, %ccfr ! tickle CCFR
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// OBSOLETE crdcxt %ccfr, %l4 ! capture CCIBR
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// OBSOLETE cwrcxt %l4, %ccfr ! tickle CCFR
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// OBSOLETE crdcxt %ccfr, %l5 ! capture CCIR
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// OBSOLETE cwrcxt %l5, %ccfr ! tickle CCFR
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// OBSOLETE crdcxt %ccpr, %l6 ! capture CCPR
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// OBSOLETE crdcxt %cccrcr, %l7 ! capture CCCRCR
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// OBSOLETE st %l1, [%sp + (24 + 72) * 4] ! save CCSR
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// OBSOLETE st %l2, [%sp + (24 + 75) * 4] ! save CCOR
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// OBSOLETE st %l3, [%sp + (24 + 76) * 4] ! save CCOBR
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// OBSOLETE st %l4, [%sp + (24 + 77) * 4] ! save CCIBR
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// OBSOLETE st %l5, [%sp + (24 + 78) * 4] ! save CCIR
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// OBSOLETE st %l6, [%sp + (24 + 73) * 4] ! save CCPR
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// OBSOLETE st %l7, [%sp + (24 + 74) * 4] ! save CCCRCR
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// OBSOLETE mov %l0, %psr ! restore original PSR
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// OBSOLETE nop ! 3 nops after write to %psr (needed?)
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// OBSOLETE nop
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// OBSOLETE nop
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// OBSOLETE
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// OBSOLETE ! End of saving coprocessor state.
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// OBSOLETE ! Save asr regs
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// OBSOLETE
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// OBSOLETE ! Part of this is silly -- we should not display ASR15 or ASR19 at all.
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// OBSOLETE
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// OBSOLETE sethi %hi(0x01000000), %l6
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// OBSOLETE st %l6, [%sp + (24 + 81) * 4] ! ASR15 == NOP
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// OBSOLETE sethi %hi(0xdeadc0de), %l6
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// OBSOLETE or %l6, %lo(0xdeadc0de), %l6
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// OBSOLETE st %l6, [%sp + (24 + 84) * 4] ! ASR19 == DEADC0DE
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// OBSOLETE
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// OBSOLETE rd %asr1, %l4
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// OBSOLETE st %l4, [%sp + (24 + 80) * 4]
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// OBSOLETE ! rd %asr15, %l4 ! must not read ASR15
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// OBSOLETE ! st %l4, [%sp + (24 + 81) * 4] ! (illegal instr trap)
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// OBSOLETE rd %asr17, %l4
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// OBSOLETE st %l4, [%sp + (24 + 82) * 4]
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// OBSOLETE rd %asr18, %l4
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// OBSOLETE st %l4, [%sp + (24 + 83) * 4]
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// OBSOLETE ! rd %asr19, %l4 ! must not read asr19
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// OBSOLETE ! st %l4, [%sp + (24 + 84) * 4] ! (halts the CPU)
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// OBSOLETE rd %asr20, %l4
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// OBSOLETE st %l4, [%sp + (24 + 85) * 4]
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// OBSOLETE rd %asr21, %l4
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// OBSOLETE st %l4, [%sp + (24 + 86) * 4]
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// OBSOLETE rd %asr22, %l4
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// OBSOLETE st %l4, [%sp + (24 + 87) * 4]
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// OBSOLETE
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// OBSOLETE ! End of saving asr regs
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// OBSOLETE
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// OBSOLETE call _handle_exception
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// OBSOLETE add %sp, 24 * 4, %o0 ! Pass address of registers
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// OBSOLETE
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// OBSOLETE ! Reload all of the registers that aren't on the stack
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// OBSOLETE
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// OBSOLETE ld [%sp + (24 + 1) * 4], %g1 ! registers[Gx]
|
|
// OBSOLETE ldd [%sp + (24 + 2) * 4], %g2
|
|
// OBSOLETE ldd [%sp + (24 + 4) * 4], %g4
|
|
// OBSOLETE ldd [%sp + (24 + 6) * 4], %g6
|
|
// OBSOLETE
|
|
// OBSOLETE ldd [%sp + (24 + 8) * 4], %i0 ! registers[Ox]
|
|
// OBSOLETE ldd [%sp + (24 + 10) * 4], %i2
|
|
// OBSOLETE ldd [%sp + (24 + 12) * 4], %i4
|
|
// OBSOLETE ldd [%sp + (24 + 14) * 4], %i6
|
|
// OBSOLETE
|
|
// OBSOLETE ! FP regs (sparclet doesn't have fpu)
|
|
// OBSOLETE
|
|
// OBSOLETE ! Update the coprocessor registers.
|
|
// OBSOLETE ! See SK/demo/hdlc_demo/ldc_swap_context.S.
|
|
// OBSOLETE
|
|
// OBSOLETE mov %psr, %l0
|
|
// OBSOLETE sethi %hi(0x2000), %l5 ! EC bit in PSR
|
|
// OBSOLETE or %l5, %l0, %l5
|
|
// OBSOLETE mov %l5, %psr ! enable coprocessor
|
|
// OBSOLETE nop ! 3 nops after write to %psr (needed?)
|
|
// OBSOLETE nop
|
|
// OBSOLETE nop
|
|
// OBSOLETE
|
|
// OBSOLETE mov 0x6, %l2
|
|
// OBSOLETE cwrcxt %l2, %ccsr ! set CCP state machine for CCFR
|
|
// OBSOLETE
|
|
// OBSOLETE ld [%sp + (24 + 72) * 4], %l1 ! saved CCSR
|
|
// OBSOLETE ld [%sp + (24 + 75) * 4], %l2 ! saved CCOR
|
|
// OBSOLETE ld [%sp + (24 + 76) * 4], %l3 ! saved CCOBR
|
|
// OBSOLETE ld [%sp + (24 + 77) * 4], %l4 ! saved CCIBR
|
|
// OBSOLETE ld [%sp + (24 + 78) * 4], %l5 ! saved CCIR
|
|
// OBSOLETE ld [%sp + (24 + 73) * 4], %l6 ! saved CCPR
|
|
// OBSOLETE ld [%sp + (24 + 74) * 4], %l7 ! saved CCCRCR
|
|
// OBSOLETE
|
|
// OBSOLETE cwrcxt %l2, %ccfr ! restore CCOR
|
|
// OBSOLETE cwrcxt %l3, %ccfr ! restore CCOBR
|
|
// OBSOLETE cwrcxt %l4, %ccfr ! restore CCIBR
|
|
// OBSOLETE cwrcxt %l5, %ccfr ! restore CCIR
|
|
// OBSOLETE cwrcxt %l6, %ccpr ! restore CCPR
|
|
// OBSOLETE cwrcxt %l7, %cccrcr ! restore CCCRCR
|
|
// OBSOLETE cwrcxt %l1, %ccsr ! restore CCSR
|
|
// OBSOLETE
|
|
// OBSOLETE mov %l0, %psr ! restore PSR
|
|
// OBSOLETE nop ! 3 nops after write to %psr (needed?)
|
|
// OBSOLETE nop
|
|
// OBSOLETE nop
|
|
// OBSOLETE
|
|
// OBSOLETE ! End of coprocessor handling stuff.
|
|
// OBSOLETE ! Update asr regs
|
|
// OBSOLETE
|
|
// OBSOLETE ld [%sp + (24 + 80) * 4], %l4
|
|
// OBSOLETE wr %l4, %asr1
|
|
// OBSOLETE ! ld [%sp + (24 + 81) * 4], %l4 ! can't write asr15
|
|
// OBSOLETE ! wr %l4, %asr15
|
|
// OBSOLETE ld [%sp + (24 + 82) * 4], %l4
|
|
// OBSOLETE wr %l4, %asr17
|
|
// OBSOLETE ld [%sp + (24 + 83) * 4], %l4
|
|
// OBSOLETE wr %l4, %asr18
|
|
// OBSOLETE ! ld [%sp + (24 + 84) * 4], %l4 ! can't write asr19
|
|
// OBSOLETE ! wr %l4, %asr19
|
|
// OBSOLETE ! ld [%sp + (24 + 85) * 4], %l4 ! can't write asr20
|
|
// OBSOLETE ! wr %l4, %asr20
|
|
// OBSOLETE ! ld [%sp + (24 + 86) * 4], %l4 ! can't write asr21
|
|
// OBSOLETE ! wr %l4, %asr21
|
|
// OBSOLETE ld [%sp + (24 + 87) * 4], %l4
|
|
// OBSOLETE wr %l4, %asr22
|
|
// OBSOLETE
|
|
// OBSOLETE ! End of restoring asr regs
|
|
// OBSOLETE
|
|
// OBSOLETE
|
|
// OBSOLETE ldd [%sp + (24 + 64) * 4], %l0 ! Y & PSR
|
|
// OBSOLETE ldd [%sp + (24 + 68) * 4], %l2 ! PC & NPC
|
|
// OBSOLETE
|
|
// OBSOLETE restore ! Ensure that previous window is valid
|
|
// OBSOLETE save %g0, %g0, %g0 ! by causing a window_underflow trap
|
|
// OBSOLETE
|
|
// OBSOLETE mov %l0, %y
|
|
// OBSOLETE mov %l1, %psr ! Make sure that traps are disabled
|
|
// OBSOLETE ! for rett
|
|
// OBSOLETE nop ! 3 nops after write to %psr (needed?)
|
|
// OBSOLETE nop
|
|
// OBSOLETE nop
|
|
// OBSOLETE
|
|
// OBSOLETE sethi %hi(in_trap_handler), %l4
|
|
// OBSOLETE ld [%lo(in_trap_handler) + %l4], %l5
|
|
// OBSOLETE dec %l5
|
|
// OBSOLETE st %l5, [%lo(in_trap_handler) + %l4]
|
|
// OBSOLETE
|
|
// OBSOLETE jmpl %l2, %g0 ! Restore old PC
|
|
// OBSOLETE rett %l3 ! Restore old nPC
|
|
// OBSOLETE ");
|
|
// OBSOLETE
|
|
// OBSOLETE /* Convert ch from a hex digit to an int */
|
|
// OBSOLETE
|
|
// OBSOLETE static int
|
|
// OBSOLETE hex (unsigned char ch)
|
|
// OBSOLETE {
|
|
// OBSOLETE if (ch >= 'a' && ch <= 'f')
|
|
// OBSOLETE return ch-'a'+10;
|
|
// OBSOLETE if (ch >= '0' && ch <= '9')
|
|
// OBSOLETE return ch-'0';
|
|
// OBSOLETE if (ch >= 'A' && ch <= 'F')
|
|
// OBSOLETE return ch-'A'+10;
|
|
// OBSOLETE return -1;
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE static char remcomInBuffer[BUFMAX];
|
|
// OBSOLETE static char remcomOutBuffer[BUFMAX];
|
|
// OBSOLETE
|
|
// OBSOLETE /* scan for the sequence $<data>#<checksum> */
|
|
// OBSOLETE
|
|
// OBSOLETE unsigned char *
|
|
// OBSOLETE getpacket (void)
|
|
// OBSOLETE {
|
|
// OBSOLETE unsigned char *buffer = &remcomInBuffer[0];
|
|
// OBSOLETE unsigned char checksum;
|
|
// OBSOLETE unsigned char xmitcsum;
|
|
// OBSOLETE int count;
|
|
// OBSOLETE char ch;
|
|
// OBSOLETE
|
|
// OBSOLETE while (1)
|
|
// OBSOLETE {
|
|
// OBSOLETE /* wait around for the start character, ignore all other characters */
|
|
// OBSOLETE while ((ch = getDebugChar ()) != '$')
|
|
// OBSOLETE ;
|
|
// OBSOLETE
|
|
// OBSOLETE retry:
|
|
// OBSOLETE checksum = 0;
|
|
// OBSOLETE xmitcsum = -1;
|
|
// OBSOLETE count = 0;
|
|
// OBSOLETE
|
|
// OBSOLETE /* now, read until a # or end of buffer is found */
|
|
// OBSOLETE while (count < BUFMAX)
|
|
// OBSOLETE {
|
|
// OBSOLETE ch = getDebugChar ();
|
|
// OBSOLETE if (ch == '$')
|
|
// OBSOLETE goto retry;
|
|
// OBSOLETE if (ch == '#')
|
|
// OBSOLETE break;
|
|
// OBSOLETE checksum = checksum + ch;
|
|
// OBSOLETE buffer[count] = ch;
|
|
// OBSOLETE count = count + 1;
|
|
// OBSOLETE }
|
|
// OBSOLETE buffer[count] = 0;
|
|
// OBSOLETE
|
|
// OBSOLETE if (ch == '#')
|
|
// OBSOLETE {
|
|
// OBSOLETE ch = getDebugChar ();
|
|
// OBSOLETE xmitcsum = hex (ch) << 4;
|
|
// OBSOLETE ch = getDebugChar ();
|
|
// OBSOLETE xmitcsum += hex (ch);
|
|
// OBSOLETE
|
|
// OBSOLETE if (checksum != xmitcsum)
|
|
// OBSOLETE {
|
|
// OBSOLETE putDebugChar ('-'); /* failed checksum */
|
|
// OBSOLETE }
|
|
// OBSOLETE else
|
|
// OBSOLETE {
|
|
// OBSOLETE putDebugChar ('+'); /* successful transfer */
|
|
// OBSOLETE
|
|
// OBSOLETE /* if a sequence char is present, reply the sequence ID */
|
|
// OBSOLETE if (buffer[2] == ':')
|
|
// OBSOLETE {
|
|
// OBSOLETE putDebugChar (buffer[0]);
|
|
// OBSOLETE putDebugChar (buffer[1]);
|
|
// OBSOLETE
|
|
// OBSOLETE return &buffer[3];
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE return &buffer[0];
|
|
// OBSOLETE }
|
|
// OBSOLETE }
|
|
// OBSOLETE }
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE /* send the packet in buffer. */
|
|
// OBSOLETE
|
|
// OBSOLETE static void
|
|
// OBSOLETE putpacket (unsigned char *buffer)
|
|
// OBSOLETE {
|
|
// OBSOLETE unsigned char checksum;
|
|
// OBSOLETE int count;
|
|
// OBSOLETE unsigned char ch;
|
|
// OBSOLETE
|
|
// OBSOLETE /* $<packet info>#<checksum>. */
|
|
// OBSOLETE do
|
|
// OBSOLETE {
|
|
// OBSOLETE putDebugChar('$');
|
|
// OBSOLETE checksum = 0;
|
|
// OBSOLETE count = 0;
|
|
// OBSOLETE
|
|
// OBSOLETE while (ch = buffer[count])
|
|
// OBSOLETE {
|
|
// OBSOLETE putDebugChar(ch);
|
|
// OBSOLETE checksum += ch;
|
|
// OBSOLETE count += 1;
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE putDebugChar('#');
|
|
// OBSOLETE putDebugChar(hexchars[checksum >> 4]);
|
|
// OBSOLETE putDebugChar(hexchars[checksum & 0xf]);
|
|
// OBSOLETE
|
|
// OBSOLETE }
|
|
// OBSOLETE while (getDebugChar() != '+');
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE /* Indicate to caller of mem2hex or hex2mem that there has been an
|
|
// OBSOLETE error. */
|
|
// OBSOLETE static volatile int mem_err = 0;
|
|
// OBSOLETE
|
|
// OBSOLETE /* Convert the memory pointed to by mem into hex, placing result in buf.
|
|
// OBSOLETE * Return a pointer to the last char put in buf (null), in case of mem fault,
|
|
// OBSOLETE * return 0.
|
|
// OBSOLETE * If MAY_FAULT is non-zero, then we will handle memory faults by returning
|
|
// OBSOLETE * a 0, else treat a fault like any other fault in the stub.
|
|
// OBSOLETE */
|
|
// OBSOLETE
|
|
// OBSOLETE static unsigned char *
|
|
// OBSOLETE mem2hex (unsigned char *mem, unsigned char *buf, int count, int may_fault)
|
|
// OBSOLETE {
|
|
// OBSOLETE unsigned char ch;
|
|
// OBSOLETE
|
|
// OBSOLETE set_mem_fault_trap(may_fault);
|
|
// OBSOLETE
|
|
// OBSOLETE while (count-- > 0)
|
|
// OBSOLETE {
|
|
// OBSOLETE ch = *mem++;
|
|
// OBSOLETE if (mem_err)
|
|
// OBSOLETE return 0;
|
|
// OBSOLETE *buf++ = hexchars[ch >> 4];
|
|
// OBSOLETE *buf++ = hexchars[ch & 0xf];
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE *buf = 0;
|
|
// OBSOLETE
|
|
// OBSOLETE set_mem_fault_trap(0);
|
|
// OBSOLETE
|
|
// OBSOLETE return buf;
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE /* convert the hex array pointed to by buf into binary to be placed in mem
|
|
// OBSOLETE * return a pointer to the character AFTER the last byte written */
|
|
// OBSOLETE
|
|
// OBSOLETE static char *
|
|
// OBSOLETE hex2mem (unsigned char *buf, unsigned char *mem, int count, int may_fault)
|
|
// OBSOLETE {
|
|
// OBSOLETE int i;
|
|
// OBSOLETE unsigned char ch;
|
|
// OBSOLETE
|
|
// OBSOLETE set_mem_fault_trap(may_fault);
|
|
// OBSOLETE
|
|
// OBSOLETE for (i=0; i<count; i++)
|
|
// OBSOLETE {
|
|
// OBSOLETE ch = hex(*buf++) << 4;
|
|
// OBSOLETE ch |= hex(*buf++);
|
|
// OBSOLETE *mem++ = ch;
|
|
// OBSOLETE if (mem_err)
|
|
// OBSOLETE return 0;
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE set_mem_fault_trap(0);
|
|
// OBSOLETE
|
|
// OBSOLETE return mem;
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE /* This table contains the mapping between SPARC hardware trap types, and
|
|
// OBSOLETE signals, which are primarily what GDB understands. It also indicates
|
|
// OBSOLETE which hardware traps we need to commandeer when initializing the stub. */
|
|
// OBSOLETE
|
|
// OBSOLETE static struct hard_trap_info
|
|
// OBSOLETE {
|
|
// OBSOLETE unsigned char tt; /* Trap type code for SPARClite */
|
|
// OBSOLETE unsigned char signo; /* Signal that we map this trap into */
|
|
// OBSOLETE } hard_trap_info[] = {
|
|
// OBSOLETE {1, SIGSEGV}, /* instruction access exception */
|
|
// OBSOLETE {0x3b, SIGSEGV}, /* instruction access error */
|
|
// OBSOLETE {2, SIGILL}, /* illegal instruction */
|
|
// OBSOLETE {3, SIGILL}, /* privileged instruction */
|
|
// OBSOLETE {4, SIGEMT}, /* fp disabled */
|
|
// OBSOLETE {0x24, SIGEMT}, /* cp disabled */
|
|
// OBSOLETE {7, SIGBUS}, /* mem address not aligned */
|
|
// OBSOLETE {0x29, SIGSEGV}, /* data access exception */
|
|
// OBSOLETE {10, SIGEMT}, /* tag overflow */
|
|
// OBSOLETE {128+1, SIGTRAP}, /* ta 1 - normal breakpoint instruction */
|
|
// OBSOLETE {0, 0} /* Must be last */
|
|
// OBSOLETE };
|
|
// OBSOLETE
|
|
// OBSOLETE /* Set up exception handlers for tracing and breakpoints */
|
|
// OBSOLETE
|
|
// OBSOLETE void
|
|
// OBSOLETE set_debug_traps (void)
|
|
// OBSOLETE {
|
|
// OBSOLETE struct hard_trap_info *ht;
|
|
// OBSOLETE
|
|
// OBSOLETE for (ht = hard_trap_info; ht->tt && ht->signo; ht++)
|
|
// OBSOLETE exceptionHandler(ht->tt, trap_low);
|
|
// OBSOLETE
|
|
// OBSOLETE initialized = 1;
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE asm ("
|
|
// OBSOLETE ! Trap handler for memory errors. This just sets mem_err to be non-zero. It
|
|
// OBSOLETE ! assumes that %l1 is non-zero. This should be safe, as it is doubtful that
|
|
// OBSOLETE ! 0 would ever contain code that could mem fault. This routine will skip
|
|
// OBSOLETE ! past the faulting instruction after setting mem_err.
|
|
// OBSOLETE
|
|
// OBSOLETE .text
|
|
// OBSOLETE .align 4
|
|
// OBSOLETE
|
|
// OBSOLETE _fltr_set_mem_err:
|
|
// OBSOLETE sethi %hi(_mem_err), %l0
|
|
// OBSOLETE st %l1, [%l0 + %lo(_mem_err)]
|
|
// OBSOLETE jmpl %l2, %g0
|
|
// OBSOLETE rett %l2+4
|
|
// OBSOLETE ");
|
|
// OBSOLETE
|
|
// OBSOLETE static void
|
|
// OBSOLETE set_mem_fault_trap (int enable)
|
|
// OBSOLETE {
|
|
// OBSOLETE extern void fltr_set_mem_err();
|
|
// OBSOLETE mem_err = 0;
|
|
// OBSOLETE
|
|
// OBSOLETE if (enable)
|
|
// OBSOLETE exceptionHandler(0x29, fltr_set_mem_err);
|
|
// OBSOLETE else
|
|
// OBSOLETE exceptionHandler(0x29, trap_low);
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE asm ("
|
|
// OBSOLETE .text
|
|
// OBSOLETE .align 4
|
|
// OBSOLETE
|
|
// OBSOLETE _dummy_hw_breakpoint:
|
|
// OBSOLETE jmpl %l2, %g0
|
|
// OBSOLETE rett %l2+4
|
|
// OBSOLETE nop
|
|
// OBSOLETE nop
|
|
// OBSOLETE ");
|
|
// OBSOLETE
|
|
// OBSOLETE static void
|
|
// OBSOLETE set_hw_breakpoint_trap (int enable)
|
|
// OBSOLETE {
|
|
// OBSOLETE extern void dummy_hw_breakpoint();
|
|
// OBSOLETE
|
|
// OBSOLETE if (enable)
|
|
// OBSOLETE exceptionHandler(255, dummy_hw_breakpoint);
|
|
// OBSOLETE else
|
|
// OBSOLETE exceptionHandler(255, trap_low);
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE static void
|
|
// OBSOLETE get_in_break_mode (void)
|
|
// OBSOLETE {
|
|
// OBSOLETE #if 0
|
|
// OBSOLETE int x;
|
|
// OBSOLETE mesg("get_in_break_mode, sp = ");
|
|
// OBSOLETE phex(&x);
|
|
// OBSOLETE #endif
|
|
// OBSOLETE set_hw_breakpoint_trap(1);
|
|
// OBSOLETE
|
|
// OBSOLETE asm("
|
|
// OBSOLETE sethi %hi(0xff10), %l4
|
|
// OBSOLETE or %l4, %lo(0xff10), %l4
|
|
// OBSOLETE sta %g0, [%l4]0x1
|
|
// OBSOLETE nop
|
|
// OBSOLETE nop
|
|
// OBSOLETE nop
|
|
// OBSOLETE ");
|
|
// OBSOLETE
|
|
// OBSOLETE set_hw_breakpoint_trap(0);
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE /* Convert the SPARC hardware trap type code to a unix signal number. */
|
|
// OBSOLETE
|
|
// OBSOLETE static int
|
|
// OBSOLETE computeSignal (int tt)
|
|
// OBSOLETE {
|
|
// OBSOLETE struct hard_trap_info *ht;
|
|
// OBSOLETE
|
|
// OBSOLETE for (ht = hard_trap_info; ht->tt && ht->signo; ht++)
|
|
// OBSOLETE if (ht->tt == tt)
|
|
// OBSOLETE return ht->signo;
|
|
// OBSOLETE
|
|
// OBSOLETE return SIGHUP; /* default for things we don't know about */
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE /*
|
|
// OBSOLETE * While we find nice hex chars, build an int.
|
|
// OBSOLETE * Return number of chars processed.
|
|
// OBSOLETE */
|
|
// OBSOLETE
|
|
// OBSOLETE static int
|
|
// OBSOLETE hexToInt(char **ptr, int *intValue)
|
|
// OBSOLETE {
|
|
// OBSOLETE int numChars = 0;
|
|
// OBSOLETE int hexValue;
|
|
// OBSOLETE
|
|
// OBSOLETE *intValue = 0;
|
|
// OBSOLETE
|
|
// OBSOLETE while (**ptr)
|
|
// OBSOLETE {
|
|
// OBSOLETE hexValue = hex(**ptr);
|
|
// OBSOLETE if (hexValue < 0)
|
|
// OBSOLETE break;
|
|
// OBSOLETE
|
|
// OBSOLETE *intValue = (*intValue << 4) | hexValue;
|
|
// OBSOLETE numChars ++;
|
|
// OBSOLETE
|
|
// OBSOLETE (*ptr)++;
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE return (numChars);
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE /*
|
|
// OBSOLETE * This function does all command procesing for interfacing to gdb. It
|
|
// OBSOLETE * returns 1 if you should skip the instruction at the trap address, 0
|
|
// OBSOLETE * otherwise.
|
|
// OBSOLETE */
|
|
// OBSOLETE
|
|
// OBSOLETE static void
|
|
// OBSOLETE handle_exception (unsigned long *registers)
|
|
// OBSOLETE {
|
|
// OBSOLETE int tt; /* Trap type */
|
|
// OBSOLETE int sigval;
|
|
// OBSOLETE int addr;
|
|
// OBSOLETE int length;
|
|
// OBSOLETE char *ptr;
|
|
// OBSOLETE unsigned long *sp;
|
|
// OBSOLETE unsigned long dsr;
|
|
// OBSOLETE
|
|
// OBSOLETE /* First, we must force all of the windows to be spilled out */
|
|
// OBSOLETE
|
|
// OBSOLETE asm("
|
|
// OBSOLETE ! Ugh. sparclet has broken save
|
|
// OBSOLETE !save %sp, -64, %sp
|
|
// OBSOLETE save
|
|
// OBSOLETE add %fp,-64,%sp
|
|
// OBSOLETE !save %sp, -64, %sp
|
|
// OBSOLETE save
|
|
// OBSOLETE add %fp,-64,%sp
|
|
// OBSOLETE !save %sp, -64, %sp
|
|
// OBSOLETE save
|
|
// OBSOLETE add %fp,-64,%sp
|
|
// OBSOLETE !save %sp, -64, %sp
|
|
// OBSOLETE save
|
|
// OBSOLETE add %fp,-64,%sp
|
|
// OBSOLETE !save %sp, -64, %sp
|
|
// OBSOLETE save
|
|
// OBSOLETE add %fp,-64,%sp
|
|
// OBSOLETE !save %sp, -64, %sp
|
|
// OBSOLETE save
|
|
// OBSOLETE add %fp,-64,%sp
|
|
// OBSOLETE !save %sp, -64, %sp
|
|
// OBSOLETE save
|
|
// OBSOLETE add %fp,-64,%sp
|
|
// OBSOLETE !save %sp, -64, %sp
|
|
// OBSOLETE save
|
|
// OBSOLETE add %fp,-64,%sp
|
|
// OBSOLETE restore
|
|
// OBSOLETE restore
|
|
// OBSOLETE restore
|
|
// OBSOLETE restore
|
|
// OBSOLETE restore
|
|
// OBSOLETE restore
|
|
// OBSOLETE restore
|
|
// OBSOLETE restore
|
|
// OBSOLETE ");
|
|
// OBSOLETE
|
|
// OBSOLETE if (registers[PC] == (unsigned long)breakinst)
|
|
// OBSOLETE {
|
|
// OBSOLETE registers[PC] = registers[NPC];
|
|
// OBSOLETE registers[NPC] += 4;
|
|
// OBSOLETE }
|
|
// OBSOLETE sp = (unsigned long *)registers[SP];
|
|
// OBSOLETE
|
|
// OBSOLETE tt = (registers[TBR] >> 4) & 0xff;
|
|
// OBSOLETE
|
|
// OBSOLETE /* reply to host that an exception has occurred */
|
|
// OBSOLETE sigval = computeSignal(tt);
|
|
// OBSOLETE ptr = remcomOutBuffer;
|
|
// OBSOLETE
|
|
// OBSOLETE *ptr++ = 'T';
|
|
// OBSOLETE *ptr++ = hexchars[sigval >> 4];
|
|
// OBSOLETE *ptr++ = hexchars[sigval & 0xf];
|
|
// OBSOLETE
|
|
// OBSOLETE *ptr++ = hexchars[PC >> 4];
|
|
// OBSOLETE *ptr++ = hexchars[PC & 0xf];
|
|
// OBSOLETE *ptr++ = ':';
|
|
// OBSOLETE ptr = mem2hex((char *)®isters[PC], ptr, 4, 0);
|
|
// OBSOLETE *ptr++ = ';';
|
|
// OBSOLETE
|
|
// OBSOLETE *ptr++ = hexchars[FP >> 4];
|
|
// OBSOLETE *ptr++ = hexchars[FP & 0xf];
|
|
// OBSOLETE *ptr++ = ':';
|
|
// OBSOLETE ptr = mem2hex(sp + 8 + 6, ptr, 4, 0); /* FP */
|
|
// OBSOLETE *ptr++ = ';';
|
|
// OBSOLETE
|
|
// OBSOLETE *ptr++ = hexchars[SP >> 4];
|
|
// OBSOLETE *ptr++ = hexchars[SP & 0xf];
|
|
// OBSOLETE *ptr++ = ':';
|
|
// OBSOLETE ptr = mem2hex((char *)&sp, ptr, 4, 0);
|
|
// OBSOLETE *ptr++ = ';';
|
|
// OBSOLETE
|
|
// OBSOLETE *ptr++ = hexchars[NPC >> 4];
|
|
// OBSOLETE *ptr++ = hexchars[NPC & 0xf];
|
|
// OBSOLETE *ptr++ = ':';
|
|
// OBSOLETE ptr = mem2hex((char *)®isters[NPC], ptr, 4, 0);
|
|
// OBSOLETE *ptr++ = ';';
|
|
// OBSOLETE
|
|
// OBSOLETE *ptr++ = hexchars[O7 >> 4];
|
|
// OBSOLETE *ptr++ = hexchars[O7 & 0xf];
|
|
// OBSOLETE *ptr++ = ':';
|
|
// OBSOLETE ptr = mem2hex((char *)®isters[O7], ptr, 4, 0);
|
|
// OBSOLETE *ptr++ = ';';
|
|
// OBSOLETE
|
|
// OBSOLETE *ptr++ = 0;
|
|
// OBSOLETE
|
|
// OBSOLETE putpacket(remcomOutBuffer);
|
|
// OBSOLETE
|
|
// OBSOLETE while (1)
|
|
// OBSOLETE {
|
|
// OBSOLETE remcomOutBuffer[0] = 0;
|
|
// OBSOLETE
|
|
// OBSOLETE ptr = getpacket();
|
|
// OBSOLETE switch (*ptr++)
|
|
// OBSOLETE {
|
|
// OBSOLETE case '?':
|
|
// OBSOLETE remcomOutBuffer[0] = 'S';
|
|
// OBSOLETE remcomOutBuffer[1] = hexchars[sigval >> 4];
|
|
// OBSOLETE remcomOutBuffer[2] = hexchars[sigval & 0xf];
|
|
// OBSOLETE remcomOutBuffer[3] = 0;
|
|
// OBSOLETE break;
|
|
// OBSOLETE
|
|
// OBSOLETE case 'd':
|
|
// OBSOLETE remote_debug = !(remote_debug); /* toggle debug flag */
|
|
// OBSOLETE break;
|
|
// OBSOLETE
|
|
// OBSOLETE case 'g': /* return the value of the CPU registers */
|
|
// OBSOLETE {
|
|
// OBSOLETE ptr = remcomOutBuffer;
|
|
// OBSOLETE ptr = mem2hex((char *)registers, ptr, 16 * 4, 0); /* G & O regs */
|
|
// OBSOLETE ptr = mem2hex(sp + 0, ptr, 16 * 4, 0); /* L & I regs */
|
|
// OBSOLETE memset(ptr, '0', 32 * 8); /* Floating point */
|
|
// OBSOLETE ptr = mem2hex((char *)®isters[Y],
|
|
// OBSOLETE ptr + 32 * 4 * 2,
|
|
// OBSOLETE 8 * 4,
|
|
// OBSOLETE 0); /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */
|
|
// OBSOLETE ptr = mem2hex((char *)®isters[CCSR],
|
|
// OBSOLETE ptr,
|
|
// OBSOLETE 8 * 4,
|
|
// OBSOLETE 0); /* CCSR, CCPR, CCCRCR, CCOR, CCOBR, CCIBR, CCIR */
|
|
// OBSOLETE ptr = mem2hex((char *)®isters[ASR1],
|
|
// OBSOLETE ptr,
|
|
// OBSOLETE 8 * 4,
|
|
// OBSOLETE 0); /* ASR1,ASR15,ASR17,ASR18,ASR19,ASR20,ASR21,ASR22 */
|
|
// OBSOLETE #if 0 /* not implemented */
|
|
// OBSOLETE ptr = mem2hex((char *) ®isters[AWR0],
|
|
// OBSOLETE ptr,
|
|
// OBSOLETE 32 * 4,
|
|
// OBSOLETE 0); /* Alternate Window Registers */
|
|
// OBSOLETE #endif
|
|
// OBSOLETE }
|
|
// OBSOLETE break;
|
|
// OBSOLETE
|
|
// OBSOLETE case 'G': /* set value of all the CPU registers - return OK */
|
|
// OBSOLETE case 'P': /* set value of one CPU register - return OK */
|
|
// OBSOLETE {
|
|
// OBSOLETE unsigned long *newsp, psr;
|
|
// OBSOLETE
|
|
// OBSOLETE psr = registers[PSR];
|
|
// OBSOLETE
|
|
// OBSOLETE if (ptr[-1] == 'P') /* do a single register */
|
|
// OBSOLETE {
|
|
// OBSOLETE int regno;
|
|
// OBSOLETE
|
|
// OBSOLETE if (hexToInt (&ptr, ®no)
|
|
// OBSOLETE && *ptr++ == '=')
|
|
// OBSOLETE if (regno >= L0 && regno <= I7)
|
|
// OBSOLETE hex2mem (ptr, sp + regno - L0, 4, 0);
|
|
// OBSOLETE else
|
|
// OBSOLETE hex2mem (ptr, (char *)®isters[regno], 4, 0);
|
|
// OBSOLETE else
|
|
// OBSOLETE {
|
|
// OBSOLETE strcpy (remcomOutBuffer, "E01");
|
|
// OBSOLETE break;
|
|
// OBSOLETE }
|
|
// OBSOLETE }
|
|
// OBSOLETE else
|
|
// OBSOLETE {
|
|
// OBSOLETE hex2mem(ptr, (char *)registers, 16 * 4, 0); /* G & O regs */
|
|
// OBSOLETE hex2mem(ptr + 16 * 4 * 2, sp + 0, 16 * 4, 0); /* L & I regs */
|
|
// OBSOLETE hex2mem(ptr + 64 * 4 * 2, (char *)®isters[Y],
|
|
// OBSOLETE 8 * 4, 0); /* Y,PSR,WIM,TBR,PC,NPC,FPSR,CPSR */
|
|
// OBSOLETE hex2mem(ptr + 72 * 4 * 2, (char *)®isters[CCSR],
|
|
// OBSOLETE 8 * 4, 0); /* CCSR,CCPR,CCCRCR,CCOR,CCOBR,CCIBR,CCIR */
|
|
// OBSOLETE hex2mem(ptr + 80 * 4 * 2, (char *)®isters[ASR1],
|
|
// OBSOLETE 8 * 4, 0); /* ASR1 ... ASR22 */
|
|
// OBSOLETE #if 0 /* not implemented */
|
|
// OBSOLETE hex2mem(ptr + 88 * 4 * 2, (char *)®isters[AWR0],
|
|
// OBSOLETE 8 * 4, 0); /* Alternate Window Registers */
|
|
// OBSOLETE #endif
|
|
// OBSOLETE }
|
|
// OBSOLETE /* See if the stack pointer has moved. If so, then copy the saved
|
|
// OBSOLETE locals and ins to the new location. This keeps the window
|
|
// OBSOLETE overflow and underflow routines happy. */
|
|
// OBSOLETE
|
|
// OBSOLETE newsp = (unsigned long *)registers[SP];
|
|
// OBSOLETE if (sp != newsp)
|
|
// OBSOLETE sp = memcpy(newsp, sp, 16 * 4);
|
|
// OBSOLETE
|
|
// OBSOLETE /* Don't allow CWP to be modified. */
|
|
// OBSOLETE
|
|
// OBSOLETE if (psr != registers[PSR])
|
|
// OBSOLETE registers[PSR] = (psr & 0x1f) | (registers[PSR] & ~0x1f);
|
|
// OBSOLETE
|
|
// OBSOLETE strcpy(remcomOutBuffer,"OK");
|
|
// OBSOLETE }
|
|
// OBSOLETE break;
|
|
// OBSOLETE
|
|
// OBSOLETE case 'm': /* mAA..AA,LLLL Read LLLL bytes at address AA..AA */
|
|
// OBSOLETE /* Try to read %x,%x. */
|
|
// OBSOLETE
|
|
// OBSOLETE if (hexToInt(&ptr, &addr)
|
|
// OBSOLETE && *ptr++ == ','
|
|
// OBSOLETE && hexToInt(&ptr, &length))
|
|
// OBSOLETE {
|
|
// OBSOLETE if (mem2hex((char *)addr, remcomOutBuffer, length, 1))
|
|
// OBSOLETE break;
|
|
// OBSOLETE
|
|
// OBSOLETE strcpy (remcomOutBuffer, "E03");
|
|
// OBSOLETE }
|
|
// OBSOLETE else
|
|
// OBSOLETE strcpy(remcomOutBuffer,"E01");
|
|
// OBSOLETE break;
|
|
// OBSOLETE
|
|
// OBSOLETE case 'M': /* MAA..AA,LLLL: Write LLLL bytes at address AA.AA return OK */
|
|
// OBSOLETE /* Try to read '%x,%x:'. */
|
|
// OBSOLETE
|
|
// OBSOLETE if (hexToInt(&ptr, &addr)
|
|
// OBSOLETE && *ptr++ == ','
|
|
// OBSOLETE && hexToInt(&ptr, &length)
|
|
// OBSOLETE && *ptr++ == ':')
|
|
// OBSOLETE {
|
|
// OBSOLETE if (hex2mem(ptr, (char *)addr, length, 1))
|
|
// OBSOLETE strcpy(remcomOutBuffer, "OK");
|
|
// OBSOLETE else
|
|
// OBSOLETE strcpy(remcomOutBuffer, "E03");
|
|
// OBSOLETE }
|
|
// OBSOLETE else
|
|
// OBSOLETE strcpy(remcomOutBuffer, "E02");
|
|
// OBSOLETE break;
|
|
// OBSOLETE
|
|
// OBSOLETE case 'c': /* cAA..AA Continue at address AA..AA(optional) */
|
|
// OBSOLETE /* try to read optional parameter, pc unchanged if no parm */
|
|
// OBSOLETE
|
|
// OBSOLETE if (hexToInt(&ptr, &addr))
|
|
// OBSOLETE {
|
|
// OBSOLETE registers[PC] = addr;
|
|
// OBSOLETE registers[NPC] = addr + 4;
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE /* Need to flush the instruction cache here, as we may have deposited a
|
|
// OBSOLETE breakpoint, and the icache probably has no way of knowing that a data ref to
|
|
// OBSOLETE some location may have changed something that is in the instruction cache.
|
|
// OBSOLETE */
|
|
// OBSOLETE
|
|
// OBSOLETE flush_i_cache();
|
|
// OBSOLETE return;
|
|
// OBSOLETE
|
|
// OBSOLETE /* kill the program */
|
|
// OBSOLETE case 'k' : /* do nothing */
|
|
// OBSOLETE break;
|
|
// OBSOLETE #if 0
|
|
// OBSOLETE case 't': /* Test feature */
|
|
// OBSOLETE asm (" std %f30,[%sp]");
|
|
// OBSOLETE break;
|
|
// OBSOLETE #endif
|
|
// OBSOLETE case 'r': /* Reset */
|
|
// OBSOLETE asm ("call 0
|
|
// OBSOLETE nop ");
|
|
// OBSOLETE break;
|
|
// OBSOLETE } /* switch */
|
|
// OBSOLETE
|
|
// OBSOLETE /* reply to the request */
|
|
// OBSOLETE putpacket(remcomOutBuffer);
|
|
// OBSOLETE }
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE /* This function will generate a breakpoint exception. It is used at the
|
|
// OBSOLETE beginning of a program to sync up with a debugger and can be used
|
|
// OBSOLETE otherwise as a quick means to stop program execution and "break" into
|
|
// OBSOLETE the debugger. */
|
|
// OBSOLETE
|
|
// OBSOLETE void
|
|
// OBSOLETE breakpoint (void)
|
|
// OBSOLETE {
|
|
// OBSOLETE if (!initialized)
|
|
// OBSOLETE return;
|
|
// OBSOLETE
|
|
// OBSOLETE asm(" .globl _breakinst
|
|
// OBSOLETE
|
|
// OBSOLETE _breakinst: ta 1
|
|
// OBSOLETE ");
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE static void
|
|
// OBSOLETE hw_breakpoint (void)
|
|
// OBSOLETE {
|
|
// OBSOLETE asm("
|
|
// OBSOLETE ta 127
|
|
// OBSOLETE ");
|
|
// OBSOLETE }
|
|
// OBSOLETE
|
|
// OBSOLETE #if 0 /* experimental and never finished, left here for reference */
|
|
// OBSOLETE static void
|
|
// OBSOLETE splet_temp(void)
|
|
// OBSOLETE {
|
|
// OBSOLETE asm(" sub %sp,(16+1+6+1+121)*4,%sp ! Make room for input & locals
|
|
// OBSOLETE ! + hidden arg + arg spill
|
|
// OBSOLETE ! + doubleword alignment
|
|
// OBSOLETE ! + registers[121]
|
|
// OBSOLETE
|
|
// OBSOLETE ! Leave a trail of breadcrumbs! (save register save area for debugging)
|
|
// OBSOLETE mov %sp, %l0
|
|
// OBSOLETE add %l0, 24*4, %l0
|
|
// OBSOLETE sethi %hi(_debug_registers), %l1
|
|
// OBSOLETE st %l0, [%lo(_debug_registers) + %l1]
|
|
// OBSOLETE
|
|
// OBSOLETE ! Save the Alternate Register Set: (not implemented yet)
|
|
// OBSOLETE ! To save the Alternate Register set, we must:
|
|
// OBSOLETE ! 1) Save the current SP in some global location.
|
|
// OBSOLETE ! 2) Swap the register sets.
|
|
// OBSOLETE ! 3) Save the Alternate SP in the Y register
|
|
// OBSOLETE ! 4) Fetch the SP that we saved in step 1.
|
|
// OBSOLETE ! 5) Use that to save the rest of the regs (not forgetting ASP in Y)
|
|
// OBSOLETE ! 6) Restore the Alternate SP from Y
|
|
// OBSOLETE ! 7) Swap the registers back.
|
|
// OBSOLETE
|
|
// OBSOLETE ! 1) Copy the current stack pointer to global _SAVED_STACK_POINTER:
|
|
// OBSOLETE sethi %hi(_saved_stack_pointer), %l0
|
|
// OBSOLETE st %sp, [%lo(_saved_stack_pointer) + %l0]
|
|
// OBSOLETE
|
|
// OBSOLETE ! 2) Swap the register sets:
|
|
// OBSOLETE mov %psr, %l1
|
|
// OBSOLETE sethi %hi(0x10000), %l2
|
|
// OBSOLETE xor %l1, %l2, %l1
|
|
// OBSOLETE mov %l1, %psr
|
|
// OBSOLETE nop ! 3 nops after write to %psr (needed?)
|
|
// OBSOLETE nop
|
|
// OBSOLETE nop
|
|
// OBSOLETE
|
|
// OBSOLETE ! 3) Save Alternate L0 in Y
|
|
// OBSOLETE wr %l0, 0, %y
|
|
// OBSOLETE
|
|
// OBSOLETE ! 4) Load former SP into alternate SP, using L0
|
|
// OBSOLETE sethi %hi(_saved_stack_pointer), %l0
|
|
// OBSOLETE or %lo(_saved_stack_pointer), %l0, %l0
|
|
// OBSOLETE swap [%l0], %sp
|
|
// OBSOLETE
|
|
// OBSOLETE ! 4.5) Restore alternate L0
|
|
// OBSOLETE rd %y, %l0
|
|
// OBSOLETE
|
|
// OBSOLETE ! 5) Save the Alternate Window Registers
|
|
// OBSOLETE st %r0, [%sp + (24 + 88) * 4] ! AWR0
|
|
// OBSOLETE st %r1, [%sp + (24 + 89) * 4] ! AWR1
|
|
// OBSOLETE st %r2, [%sp + (24 + 90) * 4] ! AWR2
|
|
// OBSOLETE st %r3, [%sp + (24 + 91) * 4] ! AWR3
|
|
// OBSOLETE st %r4, [%sp + (24 + 92) * 4] ! AWR4
|
|
// OBSOLETE st %r5, [%sp + (24 + 93) * 4] ! AWR5
|
|
// OBSOLETE st %r6, [%sp + (24 + 94) * 4] ! AWR6
|
|
// OBSOLETE st %r7, [%sp + (24 + 95) * 4] ! AWR7
|
|
// OBSOLETE st %r8, [%sp + (24 + 96) * 4] ! AWR8
|
|
// OBSOLETE st %r9, [%sp + (24 + 97) * 4] ! AWR9
|
|
// OBSOLETE st %r10, [%sp + (24 + 98) * 4] ! AWR10
|
|
// OBSOLETE st %r11, [%sp + (24 + 99) * 4] ! AWR11
|
|
// OBSOLETE st %r12, [%sp + (24 + 100) * 4] ! AWR12
|
|
// OBSOLETE st %r13, [%sp + (24 + 101) * 4] ! AWR13
|
|
// OBSOLETE ! st %r14, [%sp + (24 + 102) * 4] ! AWR14 (SP)
|
|
// OBSOLETE st %r15, [%sp + (24 + 103) * 4] ! AWR15
|
|
// OBSOLETE st %r16, [%sp + (24 + 104) * 4] ! AWR16
|
|
// OBSOLETE st %r17, [%sp + (24 + 105) * 4] ! AWR17
|
|
// OBSOLETE st %r18, [%sp + (24 + 106) * 4] ! AWR18
|
|
// OBSOLETE st %r19, [%sp + (24 + 107) * 4] ! AWR19
|
|
// OBSOLETE st %r20, [%sp + (24 + 108) * 4] ! AWR20
|
|
// OBSOLETE st %r21, [%sp + (24 + 109) * 4] ! AWR21
|
|
// OBSOLETE st %r22, [%sp + (24 + 110) * 4] ! AWR22
|
|
// OBSOLETE st %r23, [%sp + (24 + 111) * 4] ! AWR23
|
|
// OBSOLETE st %r24, [%sp + (24 + 112) * 4] ! AWR24
|
|
// OBSOLETE st %r25, [%sp + (24 + 113) * 4] ! AWR25
|
|
// OBSOLETE st %r26, [%sp + (24 + 114) * 4] ! AWR26
|
|
// OBSOLETE st %r27, [%sp + (24 + 115) * 4] ! AWR27
|
|
// OBSOLETE st %r28, [%sp + (24 + 116) * 4] ! AWR28
|
|
// OBSOLETE st %r29, [%sp + (24 + 117) * 4] ! AWR29
|
|
// OBSOLETE st %r30, [%sp + (24 + 118) * 4] ! AWR30
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// OBSOLETE st %r31, [%sp + (24 + 119) * 4] ! AWR21
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// OBSOLETE
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// OBSOLETE ! Get the Alternate PSR (I hope...)
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// OBSOLETE
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// OBSOLETE rd %psr, %l2
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// OBSOLETE st %l2, [%sp + (24 + 120) * 4] ! APSR
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// OBSOLETE
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// OBSOLETE ! Don't forget the alternate stack pointer
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// OBSOLETE
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// OBSOLETE rd %y, %l3
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// OBSOLETE st %l3, [%sp + (24 + 102) * 4] ! AWR14 (SP)
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// OBSOLETE
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// OBSOLETE ! 6) Restore the Alternate SP (saved in Y)
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// OBSOLETE
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// OBSOLETE rd %y, %o6
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// OBSOLETE
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// OBSOLETE
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// OBSOLETE ! 7) Swap the registers back:
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// OBSOLETE
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// OBSOLETE mov %psr, %l1
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// OBSOLETE sethi %hi(0x10000), %l2
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// OBSOLETE xor %l1, %l2, %l1
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|
// OBSOLETE mov %l1, %psr
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// OBSOLETE nop ! 3 nops after write to %psr (needed?)
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|
// OBSOLETE nop
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// OBSOLETE nop
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// OBSOLETE ");
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// OBSOLETE }
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// OBSOLETE
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// OBSOLETE #endif
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