diff options
Diffstat (limited to 'gdb/sparclet-stub.c')
| -rw-r--r-- | gdb/sparclet-stub.c | 1167 |
1 files changed, 0 insertions, 1167 deletions
diff --git a/gdb/sparclet-stub.c b/gdb/sparclet-stub.c deleted file mode 100644 index 88740f2..0000000 --- a/gdb/sparclet-stub.c +++ /dev/null @@ -1,1167 +0,0 @@ -// OBSOLETE /**************************************************************************** -// OBSOLETE -// OBSOLETE THIS SOFTWARE IS NOT COPYRIGHTED -// OBSOLETE -// OBSOLETE HP offers the following for use in the public domain. HP makes no -// OBSOLETE warranty with regard to the software or it's performance and the -// OBSOLETE user accepts the software "AS IS" with all faults. -// OBSOLETE -// OBSOLETE HP DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD -// OBSOLETE TO THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES -// OBSOLETE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. -// OBSOLETE -// OBSOLETE ****************************************************************************/ -// OBSOLETE -// OBSOLETE /**************************************************************************** -// OBSOLETE * Header: remcom.c,v 1.34 91/03/09 12:29:49 glenne Exp $ -// OBSOLETE * -// OBSOLETE * Module name: remcom.c $ -// OBSOLETE * Revision: 1.34 $ -// OBSOLETE * Date: 91/03/09 12:29:49 $ -// OBSOLETE * Contributor: Lake Stevens Instrument Division$ -// OBSOLETE * -// OBSOLETE * Description: low level support for gdb debugger. $ -// OBSOLETE * -// OBSOLETE * Considerations: only works on target hardware $ -// OBSOLETE * -// OBSOLETE * Written by: Glenn Engel $ -// OBSOLETE * ModuleState: Experimental $ -// OBSOLETE * -// OBSOLETE * NOTES: See Below $ -// OBSOLETE * -// OBSOLETE * Modified for SPARC by Stu Grossman, Cygnus Support. -// OBSOLETE * Based on sparc-stub.c, it's modified for SPARClite Debug Unit hardware -// OBSOLETE * breakpoint support to create sparclite-stub.c, by Kung Hsu, Cygnus Support. -// OBSOLETE * -// OBSOLETE * This code has been extensively tested on the Fujitsu SPARClite demo board. -// OBSOLETE * -// OBSOLETE * To enable debugger support, two things need to happen. One, a -// OBSOLETE * call to set_debug_traps() is necessary in order to allow any breakpoints -// OBSOLETE * or error conditions to be properly intercepted and reported to gdb. -// OBSOLETE * Two, a breakpoint needs to be generated to begin communication. This -// OBSOLETE * is most easily accomplished by a call to breakpoint(). Breakpoint() -// OBSOLETE * simulates a breakpoint by executing a trap #1. -// OBSOLETE * -// OBSOLETE ************* -// OBSOLETE * -// OBSOLETE * The following gdb commands are supported: -// OBSOLETE * -// OBSOLETE * command function Return value -// OBSOLETE * -// OBSOLETE * g return the value of the CPU registers hex data or ENN -// OBSOLETE * G set the value of the CPU registers OK or ENN -// OBSOLETE * P set the value of a single CPU register OK or ENN -// OBSOLETE * -// OBSOLETE * mAA..AA,LLLL Read LLLL bytes at address AA..AA hex data or ENN -// OBSOLETE * MAA..AA,LLLL: Write LLLL bytes at address AA.AA OK or ENN -// OBSOLETE * -// OBSOLETE * c Resume at current address SNN ( signal NN) -// OBSOLETE * cAA..AA Continue at address AA..AA SNN -// OBSOLETE * -// OBSOLETE * s Step one instruction SNN -// OBSOLETE * sAA..AA Step one instruction from AA..AA SNN -// OBSOLETE * -// OBSOLETE * k kill -// OBSOLETE * -// OBSOLETE * ? What was the last sigval ? SNN (signal NN) -// OBSOLETE * -// OBSOLETE * All commands and responses are sent with a packet which includes a -// OBSOLETE * checksum. A packet consists of -// OBSOLETE * -// OBSOLETE * $<packet info>#<checksum>. -// OBSOLETE * -// OBSOLETE * where -// OBSOLETE * <packet info> :: <characters representing the command or response> -// OBSOLETE * <checksum> :: <two hex digits computed as modulo 256 sum of <packetinfo>> -// OBSOLETE * -// OBSOLETE * When a packet is received, it is first acknowledged with either '+' or '-'. -// OBSOLETE * '+' indicates a successful transfer. '-' indicates a failed transfer. -// OBSOLETE * -// OBSOLETE * Example: -// OBSOLETE * -// OBSOLETE * Host: Reply: -// OBSOLETE * $m0,10#2a +$00010203040506070809101112131415#42 -// OBSOLETE * -// OBSOLETE ****************************************************************************/ -// OBSOLETE -// OBSOLETE #include <string.h> -// OBSOLETE #include <signal.h> -// OBSOLETE -// OBSOLETE /************************************************************************ -// OBSOLETE * -// OBSOLETE * external low-level support routines -// OBSOLETE */ -// OBSOLETE -// OBSOLETE extern void putDebugChar(); /* write a single character */ -// OBSOLETE extern int getDebugChar(); /* read and return a single char */ -// OBSOLETE -// OBSOLETE /************************************************************************/ -// OBSOLETE /* BUFMAX defines the maximum number of characters in inbound/outbound buffers*/ -// OBSOLETE /* at least NUMREGBYTES*2 are needed for register packets */ -// OBSOLETE #define BUFMAX 2048 -// OBSOLETE -// OBSOLETE static int initialized = 0; /* !0 means we've been initialized */ -// OBSOLETE static int remote_debug = 0; /* turn on verbose debugging */ -// OBSOLETE -// OBSOLETE extern void breakinst(); -// OBSOLETE void _cprint(); -// OBSOLETE static void hw_breakpoint(); -// OBSOLETE static void set_mem_fault_trap(); -// OBSOLETE static void get_in_break_mode(); -// OBSOLETE static unsigned char *mem2hex(); -// OBSOLETE -// OBSOLETE static const char hexchars[]="0123456789abcdef"; -// OBSOLETE -// OBSOLETE #define NUMREGS 121 -// OBSOLETE -// OBSOLETE static unsigned long saved_stack_pointer; -// OBSOLETE -// OBSOLETE /* Number of bytes of registers. */ -// OBSOLETE #define NUMREGBYTES (NUMREGS * 4) -// OBSOLETE enum regnames { G0, G1, G2, G3, G4, G5, G6, G7, -// OBSOLETE O0, O1, O2, O3, O4, O5, SP, O7, -// OBSOLETE L0, L1, L2, L3, L4, L5, L6, L7, -// OBSOLETE I0, I1, I2, I3, I4, I5, FP, I7, -// OBSOLETE -// OBSOLETE F0, F1, F2, F3, F4, F5, F6, F7, -// OBSOLETE F8, F9, F10, F11, F12, F13, F14, F15, -// OBSOLETE F16, F17, F18, F19, F20, F21, F22, F23, -// OBSOLETE F24, F25, F26, F27, F28, F29, F30, F31, -// OBSOLETE -// OBSOLETE Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR, -// OBSOLETE CCSR, CCPR, CCCRCR, CCOR, CCOBR, CCIBR, CCIR, UNUSED1, -// OBSOLETE -// OBSOLETE ASR1, ASR15, ASR17, ASR18, ASR19, ASR20, ASR21, ASR22, -// OBSOLETE /* the following not actually implemented */ -// OBSOLETE AWR0, AWR1, AWR2, AWR3, AWR4, AWR5, AWR6, AWR7, -// OBSOLETE AWR8, AWR9, AWR10, AWR11, AWR12, AWR13, AWR14, AWR15, -// OBSOLETE AWR16, AWR17, AWR18, AWR19, AWR20, AWR21, AWR22, AWR23, -// OBSOLETE AWR24, AWR25, AWR26, AWR27, AWR28, AWR29, AWR30, AWR31, -// OBSOLETE APSR -// OBSOLETE }; -// OBSOLETE -// OBSOLETE /*************************** ASSEMBLY CODE MACROS *************************/ -// OBSOLETE /* */ -// OBSOLETE -// OBSOLETE extern void trap_low(); -// OBSOLETE -// OBSOLETE asm(" -// OBSOLETE .reserve trapstack, 1000 * 4, \"bss\", 8 -// OBSOLETE -// OBSOLETE .data -// OBSOLETE .align 4 -// OBSOLETE -// OBSOLETE in_trap_handler: -// OBSOLETE .word 0 -// OBSOLETE -// OBSOLETE .text -// OBSOLETE .align 4 -// OBSOLETE -// OBSOLETE ! This function is called when any SPARC trap (except window overflow or -// OBSOLETE ! underflow) occurs. It makes sure that the invalid register window is still -// OBSOLETE ! available before jumping into C code. It will also restore the world if you -// OBSOLETE ! return from handle_exception. -// OBSOLETE ! -// OBSOLETE ! On entry, trap_low expects l1 and l2 to contain pc and npc respectivly. -// OBSOLETE -// OBSOLETE .globl _trap_low -// OBSOLETE _trap_low: -// OBSOLETE mov %psr, %l0 -// OBSOLETE mov %wim, %l3 -// OBSOLETE -// OBSOLETE srl %l3, %l0, %l4 ! wim >> cwp -// OBSOLETE and %l4, 0xff, %l4 ! Mask off windows 28, 29 -// OBSOLETE cmp %l4, 1 -// OBSOLETE bne window_fine ! Branch if not in the invalid window -// OBSOLETE nop -// OBSOLETE -// OBSOLETE ! Handle window overflow -// OBSOLETE -// OBSOLETE mov %g1, %l4 ! Save g1, we use it to hold the wim -// OBSOLETE srl %l3, 1, %g1 ! Rotate wim right -// OBSOLETE and %g1, 0xff, %g1 ! Mask off windows 28, 29 -// OBSOLETE tst %g1 -// OBSOLETE bg good_wim ! Branch if new wim is non-zero -// OBSOLETE nop -// OBSOLETE -// OBSOLETE ! At this point, we need to bring a 1 into the high order bit of the wim. -// OBSOLETE ! Since we don't want to make any assumptions about the number of register -// OBSOLETE ! windows, we figure it out dynamically so as to setup the wim correctly. -// OBSOLETE -// OBSOLETE ! The normal way doesn't work on the sparclet as register windows -// OBSOLETE ! 28 and 29 are special purpose windows. -// OBSOLETE !not %g1 ! Fill g1 with ones -// OBSOLETE !mov %g1, %wim ! Fill the wim with ones -// OBSOLETE !nop -// OBSOLETE !nop -// OBSOLETE !nop -// OBSOLETE !mov %wim, %g1 ! Read back the wim -// OBSOLETE !inc %g1 ! Now g1 has 1 just to left of wim -// OBSOLETE !srl %g1, 1, %g1 ! Now put 1 at top of wim -// OBSOLETE -// OBSOLETE mov 0x80, %g1 ! Hack for sparclet -// OBSOLETE -// OBSOLETE ! This doesn't work on the sparclet. -// OBSOLETE !mov %g0, %wim ! Clear wim so that subsequent save -// OBSOLETE ! won't trap -// OBSOLETE andn %l3, 0xff, %l5 ! Clear wim but not windows 28, 29 -// OBSOLETE mov %l5, %wim -// OBSOLETE nop -// OBSOLETE nop -// OBSOLETE nop -// OBSOLETE -// OBSOLETE good_wim: -// OBSOLETE save %g0, %g0, %g0 ! Slip into next window -// OBSOLETE mov %g1, %wim ! Install the new wim -// OBSOLETE -// OBSOLETE std %l0, [%sp + 0 * 4] ! save L & I registers -// OBSOLETE std %l2, [%sp + 2 * 4] -// OBSOLETE std %l4, [%sp + 4 * 4] -// OBSOLETE std %l6, [%sp + 6 * 4] -// OBSOLETE -// OBSOLETE std %i0, [%sp + 8 * 4] -// OBSOLETE std %i2, [%sp + 10 * 4] -// OBSOLETE std %i4, [%sp + 12 * 4] -// OBSOLETE std %i6, [%sp + 14 * 4] -// OBSOLETE -// OBSOLETE restore ! Go back to trap window. -// OBSOLETE mov %l4, %g1 ! Restore %g1 -// OBSOLETE -// OBSOLETE window_fine: -// OBSOLETE sethi %hi(in_trap_handler), %l4 -// OBSOLETE ld [%lo(in_trap_handler) + %l4], %l5 -// OBSOLETE tst %l5 -// OBSOLETE bg recursive_trap -// OBSOLETE inc %l5 -// OBSOLETE -// OBSOLETE set trapstack+1000*4, %sp ! Switch to trap stack -// OBSOLETE -// OBSOLETE recursive_trap: -// OBSOLETE st %l5, [%lo(in_trap_handler) + %l4] -// OBSOLETE sub %sp,(16+1+6+1+88)*4,%sp ! Make room for input & locals -// OBSOLETE ! + hidden arg + arg spill -// OBSOLETE ! + doubleword alignment -// OBSOLETE ! + registers[121] -// OBSOLETE -// OBSOLETE std %g0, [%sp + (24 + 0) * 4] ! registers[Gx] -// OBSOLETE std %g2, [%sp + (24 + 2) * 4] -// OBSOLETE std %g4, [%sp + (24 + 4) * 4] -// OBSOLETE std %g6, [%sp + (24 + 6) * 4] -// OBSOLETE -// OBSOLETE std %i0, [%sp + (24 + 8) * 4] ! registers[Ox] -// OBSOLETE std %i2, [%sp + (24 + 10) * 4] -// OBSOLETE std %i4, [%sp + (24 + 12) * 4] -// OBSOLETE std %i6, [%sp + (24 + 14) * 4] -// OBSOLETE -// OBSOLETE ! FP regs (sparclet doesn't have fpu) -// OBSOLETE -// OBSOLETE mov %y, %l4 -// OBSOLETE mov %tbr, %l5 -// OBSOLETE st %l4, [%sp + (24 + 64) * 4] ! Y -// OBSOLETE st %l0, [%sp + (24 + 65) * 4] ! PSR -// OBSOLETE st %l3, [%sp + (24 + 66) * 4] ! WIM -// OBSOLETE st %l5, [%sp + (24 + 67) * 4] ! TBR -// OBSOLETE st %l1, [%sp + (24 + 68) * 4] ! PC -// OBSOLETE st %l2, [%sp + (24 + 69) * 4] ! NPC -// OBSOLETE ! CPSR and FPSR not impl -// OBSOLETE or %l0, 0xf20, %l4 -// OBSOLETE mov %l4, %psr ! Turn on traps, disable interrupts -// OBSOLETE nop -// OBSOLETE nop -// OBSOLETE nop -// OBSOLETE -// OBSOLETE ! Save coprocessor state. -// 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 crdcxt %ccsr, %l1 ! capture CCSR -// OBSOLETE mov 0x6, %l2 -// OBSOLETE cwrcxt %l2, %ccsr ! set CCP state machine for CCFR -// OBSOLETE crdcxt %ccfr, %l2 ! capture CCOR -// OBSOLETE cwrcxt %l2, %ccfr ! tickle CCFR -// OBSOLETE crdcxt %ccfr, %l3 ! capture CCOBR -// OBSOLETE cwrcxt %l3, %ccfr ! tickle CCFR -// OBSOLETE crdcxt %ccfr, %l4 ! capture CCIBR -// OBSOLETE cwrcxt %l4, %ccfr ! tickle CCFR -// OBSOLETE crdcxt %ccfr, %l5 ! capture CCIR -// OBSOLETE cwrcxt %l5, %ccfr ! tickle CCFR -// OBSOLETE crdcxt %ccpr, %l6 ! capture CCPR -// OBSOLETE crdcxt %cccrcr, %l7 ! capture CCCRCR -// OBSOLETE st %l1, [%sp + (24 + 72) * 4] ! save CCSR -// OBSOLETE st %l2, [%sp + (24 + 75) * 4] ! save CCOR -// OBSOLETE st %l3, [%sp + (24 + 76) * 4] ! save CCOBR -// OBSOLETE st %l4, [%sp + (24 + 77) * 4] ! save CCIBR -// OBSOLETE st %l5, [%sp + (24 + 78) * 4] ! save CCIR -// OBSOLETE st %l6, [%sp + (24 + 73) * 4] ! save CCPR -// OBSOLETE st %l7, [%sp + (24 + 74) * 4] ! save CCCRCR -// OBSOLETE mov %l0, %psr ! restore original PSR -// OBSOLETE nop ! 3 nops after write to %psr (needed?) -// OBSOLETE nop -// OBSOLETE nop -// OBSOLETE -// OBSOLETE ! End of saving coprocessor state. -// OBSOLETE ! Save asr regs -// OBSOLETE -// OBSOLETE ! Part of this is silly -- we should not display ASR15 or ASR19 at all. -// OBSOLETE -// OBSOLETE sethi %hi(0x01000000), %l6 -// OBSOLETE st %l6, [%sp + (24 + 81) * 4] ! ASR15 == NOP -// OBSOLETE sethi %hi(0xdeadc0de), %l6 -// OBSOLETE or %l6, %lo(0xdeadc0de), %l6 -// OBSOLETE st %l6, [%sp + (24 + 84) * 4] ! ASR19 == DEADC0DE -// OBSOLETE -// OBSOLETE rd %asr1, %l4 -// OBSOLETE st %l4, [%sp + (24 + 80) * 4] -// OBSOLETE ! rd %asr15, %l4 ! must not read ASR15 -// OBSOLETE ! st %l4, [%sp + (24 + 81) * 4] ! (illegal instr trap) -// OBSOLETE rd %asr17, %l4 -// OBSOLETE st %l4, [%sp + (24 + 82) * 4] -// OBSOLETE rd %asr18, %l4 -// OBSOLETE st %l4, [%sp + (24 + 83) * 4] -// OBSOLETE ! rd %asr19, %l4 ! must not read asr19 -// OBSOLETE ! st %l4, [%sp + (24 + 84) * 4] ! (halts the CPU) -// OBSOLETE rd %asr20, %l4 -// OBSOLETE st %l4, [%sp + (24 + 85) * 4] -// OBSOLETE rd %asr21, %l4 -// OBSOLETE st %l4, [%sp + (24 + 86) * 4] -// OBSOLETE rd %asr22, %l4 -// OBSOLETE st %l4, [%sp + (24 + 87) * 4] -// OBSOLETE -// OBSOLETE ! End of saving asr regs -// OBSOLETE -// OBSOLETE call _handle_exception -// OBSOLETE add %sp, 24 * 4, %o0 ! Pass address of registers -// OBSOLETE -// OBSOLETE ! Reload all of the registers that aren't on the stack -// OBSOLETE -// 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 -// OBSOLETE st %r31, [%sp + (24 + 119) * 4] ! AWR21 -// OBSOLETE -// OBSOLETE ! Get the Alternate PSR (I hope...) -// OBSOLETE -// OBSOLETE rd %psr, %l2 -// OBSOLETE st %l2, [%sp + (24 + 120) * 4] ! APSR -// OBSOLETE -// OBSOLETE ! Don't forget the alternate stack pointer -// OBSOLETE -// OBSOLETE rd %y, %l3 -// OBSOLETE st %l3, [%sp + (24 + 102) * 4] ! AWR14 (SP) -// OBSOLETE -// OBSOLETE ! 6) Restore the Alternate SP (saved in Y) -// OBSOLETE -// OBSOLETE rd %y, %o6 -// OBSOLETE -// OBSOLETE -// OBSOLETE ! 7) Swap the registers back: -// OBSOLETE -// 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 } -// OBSOLETE -// OBSOLETE #endif |