| // 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 |
