-/****************************************************************************
-
- THIS SOFTWARE IS NOT COPYRIGHTED
-
- HP offers the following for use in the public domain. HP makes no
- warranty with regard to the software or it's performance and the
- user accepts the software "AS IS" with all faults.
-
- HP DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD
- TO THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES
- OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-
-****************************************************************************/
-
-/****************************************************************************
- * Header: remcom.c,v 1.34 91/03/09 12:29:49 glenne Exp $
- *
- * Module name: remcom.c $
- * Revision: 1.34 $
- * Date: 91/03/09 12:29:49 $
- * Contributor: Lake Stevens Instrument Division$
- *
- * Description: low level support for gdb debugger. $
- *
- * Considerations: only works on target hardware $
- *
- * Written by: Glenn Engel $
- * ModuleState: Experimental $
- *
- * NOTES: See Below $
- *
- * Modified for SPARC by Stu Grossman, Cygnus Support.
- * Based on sparc-stub.c, it's modified for SPARClite Debug Unit hardware
- * breakpoint support to create sparclite-stub.c, by Kung Hsu, Cygnus Support.
- *
- * This code has been extensively tested on the Fujitsu SPARClite demo board.
- *
- * To enable debugger support, two things need to happen. One, a
- * call to set_debug_traps() is necessary in order to allow any breakpoints
- * or error conditions to be properly intercepted and reported to gdb.
- * Two, a breakpoint needs to be generated to begin communication. This
- * is most easily accomplished by a call to breakpoint(). Breakpoint()
- * simulates a breakpoint by executing a trap #1.
- *
- *************
- *
- * The following gdb commands are supported:
- *
- * command function Return value
- *
- * g return the value of the CPU registers hex data or ENN
- * G set the value of the CPU registers OK or ENN
- * P set the value of a single CPU register OK or P01 (???)
- *
- * mAA..AA,LLLL Read LLLL bytes at address AA..AA hex data or ENN
- * MAA..AA,LLLL: Write LLLL bytes at address AA.AA OK or ENN
- *
- * c Resume at current address SNN ( signal NN)
- * cAA..AA Continue at address AA..AA SNN
- *
- * s Step one instruction SNN
- * sAA..AA Step one instruction from AA..AA SNN
- *
- * k kill
- *
- * ? What was the last sigval ? SNN (signal NN)
- *
- * bBB..BB Set baud rate to BB..BB OK or BNN, then sets
- * baud rate
- *
- * All commands and responses are sent with a packet which includes a
- * checksum. A packet consists of
- *
- * $<packet info>#<checksum>.
- *
- * where
- * <packet info> :: <characters representing the command or response>
- * <checksum> :: <two hex digits computed as modulo 256 sum of <packetinfo>>
- *
- * When a packet is received, it is first acknowledged with either '+' or '-'.
- * '+' indicates a successful transfer. '-' indicates a failed transfer.
- *
- * Example:
- *
- * Host: Reply:
- * $m0,10#2a +$00010203040506070809101112131415#42
- *
- ****************************************************************************/
-
-#include <string.h>
-#include <signal.h>
-
-/************************************************************************
- *
- * external low-level support routines
- */
-
-extern void putDebugChar(); /* write a single character */
-extern int getDebugChar(); /* read and return a single char */
-
-/************************************************************************/
-/* BUFMAX defines the maximum number of characters in inbound/outbound buffers*/
-/* at least NUMREGBYTES*2 are needed for register packets */
-#define BUFMAX 2048
-
-static int initialized = 0; /* !0 means we've been initialized */
-static int remote_debug = 0; /* turn on verbose debugging */
-
-extern void breakinst();
-void _cprint();
-static void hw_breakpoint();
-static void set_mem_fault_trap();
-static void get_in_break_mode();
-static unsigned char *mem2hex();
-
-static const char hexchars[]="0123456789abcdef";
-
-#define NUMREGS 121
-
-static unsigned long saved_stack_pointer;
-
-/* Number of bytes of registers. */
-#define NUMREGBYTES (NUMREGS * 4)
-enum regnames { G0, G1, G2, G3, G4, G5, G6, G7,
- O0, O1, O2, O3, O4, O5, SP, O7,
- L0, L1, L2, L3, L4, L5, L6, L7,
- I0, I1, I2, I3, I4, I5, FP, I7,
-
- F0, F1, F2, F3, F4, F5, F6, F7,
- F8, F9, F10, F11, F12, F13, F14, F15,
- F16, F17, F18, F19, F20, F21, F22, F23,
- F24, F25, F26, F27, F28, F29, F30, F31,
-
- Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR,
- CCSR, CCPR, CCCRCR, CCOR, CCOBR, CCIBR, CCIR, UNUSED1,
-
- ASR1, ASR15, ASR17, ASR18, ASR19, ASR20, ASR21, ASR22,
- /* the following not actually implemented */
- AWR0, AWR1, AWR2, AWR3, AWR4, AWR5, AWR6, AWR7,
- AWR8, AWR9, AWR10, AWR11, AWR12, AWR13, AWR14, AWR15,
- AWR16, AWR17, AWR18, AWR19, AWR20, AWR21, AWR22, AWR23,
- AWR24, AWR25, AWR26, AWR27, AWR28, AWR29, AWR30, AWR31,
- APSR
-};
-
-/*************************** ASSEMBLY CODE MACROS *************************/
-/* */
-
-extern void trap_low();
-
-asm("
- .reserve trapstack, 1000 * 4, \"bss\", 8
-
- .data
- .align 4
-
-in_trap_handler:
- .word 0
-
- .text
- .align 4
-
-! This function is called when any SPARC trap (except window overflow or
-! underflow) occurs. It makes sure that the invalid register window is still
-! available before jumping into C code. It will also restore the world if you
-! return from handle_exception.
-!
-! On entry, trap_low expects l1 and l2 to contain pc and npc respectivly.
-
- .globl _trap_low
-_trap_low:
- mov %psr, %l0
- mov %wim, %l3
-
- srl %l3, %l0, %l4 ! wim >> cwp
- and %l4, 0xff, %l4 ! Mask off windows 28, 29
- cmp %l4, 1
- bne window_fine ! Branch if not in the invalid window
- nop
-
-! Handle window overflow
-
- mov %g1, %l4 ! Save g1, we use it to hold the wim
- srl %l3, 1, %g1 ! Rotate wim right
- and %g1, 0xff, %g1 ! Mask off windows 28, 29
- tst %g1
- bg good_wim ! Branch if new wim is non-zero
- nop
-
-! At this point, we need to bring a 1 into the high order bit of the wim.
-! Since we don't want to make any assumptions about the number of register
-! windows, we figure it out dynamically so as to setup the wim correctly.
-
- ! The normal way doesn't work on the sparclet as register windows
- ! 28 and 29 are special purpose windows.
- !not %g1 ! Fill g1 with ones
- !mov %g1, %wim ! Fill the wim with ones
- !nop
- !nop
- !nop
- !mov %wim, %g1 ! Read back the wim
- !inc %g1 ! Now g1 has 1 just to left of wim
- !srl %g1, 1, %g1 ! Now put 1 at top of wim
-
- mov 0x80, %g1 ! Hack for sparclet
-
- ! This doesn't work on the sparclet.
- !mov %g0, %wim ! Clear wim so that subsequent save
- ! won't trap
- andn %l3, 0xff, %l5 ! Clear wim but not windows 28, 29
- mov %l5, %wim
- nop
- nop
- nop
-
-good_wim:
- save %g0, %g0, %g0 ! Slip into next window
- mov %g1, %wim ! Install the new wim
-
- std %l0, [%sp + 0 * 4] ! save L & I registers
- std %l2, [%sp + 2 * 4]
- std %l4, [%sp + 4 * 4]
- std %l6, [%sp + 6 * 4]
-
- std %i0, [%sp + 8 * 4]
- std %i2, [%sp + 10 * 4]
- std %i4, [%sp + 12 * 4]
- std %i6, [%sp + 14 * 4]
-
- restore ! Go back to trap window.
- mov %l4, %g1 ! Restore %g1
-
-window_fine:
- sethi %hi(in_trap_handler), %l4
- ld [%lo(in_trap_handler) + %l4], %l5
- tst %l5
- bg recursive_trap
- inc %l5
-
- set trapstack+1000*4, %sp ! Switch to trap stack
-
-recursive_trap:
- st %l5, [%lo(in_trap_handler) + %l4]
- sub %sp,(16+1+6+1+88)*4,%sp ! Make room for input & locals
- ! + hidden arg + arg spill
- ! + doubleword alignment
- ! + registers[121]
-
- std %g0, [%sp + (24 + 0) * 4] ! registers[Gx]
- std %g2, [%sp + (24 + 2) * 4]
- std %g4, [%sp + (24 + 4) * 4]
- std %g6, [%sp + (24 + 6) * 4]
-
- std %i0, [%sp + (24 + 8) * 4] ! registers[Ox]
- std %i2, [%sp + (24 + 10) * 4]
- std %i4, [%sp + (24 + 12) * 4]
- std %i6, [%sp + (24 + 14) * 4]
-
- ! FP regs (sparclet doesn't have fpu)
-
- mov %y, %l4
- mov %tbr, %l5
- st %l4, [%sp + (24 + 64) * 4] ! Y
- st %l0, [%sp + (24 + 65) * 4] ! PSR
- st %l3, [%sp + (24 + 66) * 4] ! WIM
- st %l5, [%sp + (24 + 67) * 4] ! TBR
- st %l1, [%sp + (24 + 68) * 4] ! PC
- st %l2, [%sp + (24 + 69) * 4] ! NPC
- ! CPSR and FPSR not impl
- or %l0, 0xf20, %l4
- mov %l4, %psr ! Turn on traps, disable interrupts
- nop
- nop
- nop
-
-! Save coprocessor state.
-! See SK/demo/hdlc_demo/ldc_swap_context.S.
-
- mov %psr, %l0
- sethi %hi(0x2000), %l5 ! EC bit in PSR
- or %l5, %l0, %l5
- mov %l5, %psr ! enable coprocessor
- nop ! 3 nops after write to %psr (needed?)
- nop
- nop
- crdcxt %ccsr, %l1 ! capture CCSR
- mov 0x6, %l2
- cwrcxt %l2, %ccsr ! set CCP state machine for CCFR
- crdcxt %ccfr, %l2 ! capture CCOR
- cwrcxt %l2, %ccfr ! tickle CCFR
- crdcxt %ccfr, %l3 ! capture CCOBR
- cwrcxt %l3, %ccfr ! tickle CCFR
- crdcxt %ccfr, %l4 ! capture CCIBR
- cwrcxt %l4, %ccfr ! tickle CCFR
- crdcxt %ccfr, %l5 ! capture CCIR
- cwrcxt %l5, %ccfr ! tickle CCFR
- crdcxt %ccpr, %l6 ! capture CCPR
- crdcxt %cccrcr, %l7 ! capture CCCRCR
- st %l1, [%sp + (24 + 72) * 4] ! save CCSR
- st %l2, [%sp + (24 + 75) * 4] ! save CCOR
- st %l3, [%sp + (24 + 76) * 4] ! save CCOBR
- st %l4, [%sp + (24 + 77) * 4] ! save CCIBR
- st %l5, [%sp + (24 + 78) * 4] ! save CCIR
- st %l6, [%sp + (24 + 73) * 4] ! save CCPR
- st %l7, [%sp + (24 + 74) * 4] ! save CCCRCR
- mov %l0, %psr ! restore original PSR
- nop ! 3 nops after write to %psr (needed?)
- nop
- nop
-
-! End of saving coprocessor state.
-! Save asr regs
-
-! Part of this is silly -- we should not display ASR15 or ASR19 at all.
-
- sethi %hi(0x01000000), %l6
- st %l6, [%sp + (24 + 81) * 4] ! ASR15 == NOP
- sethi %hi(0xdeadc0de), %l6
- or %l6, %lo(0xdeadc0de), %l6
- st %l6, [%sp + (24 + 84) * 4] ! ASR19 == DEADC0DE
-
- rd %asr1, %l4
- st %l4, [%sp + (24 + 80) * 4]
-! rd %asr15, %l4 ! must not read ASR15
-! st %l4, [%sp + (24 + 81) * 4] ! (illegal instr trap)
- rd %asr17, %l4
- st %l4, [%sp + (24 + 82) * 4]
- rd %asr18, %l4
- st %l4, [%sp + (24 + 83) * 4]
-! rd %asr19, %l4 ! must not read asr19
-! st %l4, [%sp + (24 + 84) * 4] ! (halts the CPU)
- rd %asr20, %l4
- st %l4, [%sp + (24 + 85) * 4]
- rd %asr21, %l4
- st %l4, [%sp + (24 + 86) * 4]
- rd %asr22, %l4
- st %l4, [%sp + (24 + 87) * 4]
-
-! End of saving asr regs
-
- call _handle_exception
- add %sp, 24 * 4, %o0 ! Pass address of registers
-
-! Reload all of the registers that aren't on the stack
-
- ld [%sp + (24 + 1) * 4], %g1 ! registers[Gx]
- ldd [%sp + (24 + 2) * 4], %g2
- ldd [%sp + (24 + 4) * 4], %g4
- ldd [%sp + (24 + 6) * 4], %g6
-
- ldd [%sp + (24 + 8) * 4], %i0 ! registers[Ox]
- ldd [%sp + (24 + 10) * 4], %i2
- ldd [%sp + (24 + 12) * 4], %i4
- ldd [%sp + (24 + 14) * 4], %i6
-
- ! FP regs (sparclet doesn't have fpu)
-
-! Update the coprocessor registers.
-! See SK/demo/hdlc_demo/ldc_swap_context.S.
-
- mov %psr, %l0
- sethi %hi(0x2000), %l5 ! EC bit in PSR
- or %l5, %l0, %l5
- mov %l5, %psr ! enable coprocessor
- nop ! 3 nops after write to %psr (needed?)
- nop
- nop
-
- mov 0x6, %l2
- cwrcxt %l2, %ccsr ! set CCP state machine for CCFR
-
- ld [%sp + (24 + 72) * 4], %l1 ! saved CCSR
- ld [%sp + (24 + 75) * 4], %l2 ! saved CCOR
- ld [%sp + (24 + 76) * 4], %l3 ! saved CCOBR
- ld [%sp + (24 + 77) * 4], %l4 ! saved CCIBR
- ld [%sp + (24 + 78) * 4], %l5 ! saved CCIR
- ld [%sp + (24 + 73) * 4], %l6 ! saved CCPR
- ld [%sp + (24 + 74) * 4], %l7 ! saved CCCRCR
-
- cwrcxt %l2, %ccfr ! restore CCOR
- cwrcxt %l3, %ccfr ! restore CCOBR
- cwrcxt %l4, %ccfr ! restore CCIBR
- cwrcxt %l5, %ccfr ! restore CCIR
- cwrcxt %l6, %ccpr ! restore CCPR
- cwrcxt %l7, %cccrcr ! restore CCCRCR
- cwrcxt %l1, %ccsr ! restore CCSR
-
- mov %l0, %psr ! restore PSR
- nop ! 3 nops after write to %psr (needed?)
- nop
- nop
-
-! End of coprocessor handling stuff.
-! Update asr regs
-
- ld [%sp + (24 + 80) * 4], %l4
- wr %l4, %asr1
-! ld [%sp + (24 + 81) * 4], %l4 ! can't write asr15
-! wr %l4, %asr15
- ld [%sp + (24 + 82) * 4], %l4
- wr %l4, %asr17
- ld [%sp + (24 + 83) * 4], %l4
- wr %l4, %asr18
-! ld [%sp + (24 + 84) * 4], %l4 ! can't write asr19
-! wr %l4, %asr19
-! ld [%sp + (24 + 85) * 4], %l4 ! can't write asr20
-! wr %l4, %asr20
-! ld [%sp + (24 + 86) * 4], %l4 ! can't write asr21
-! wr %l4, %asr21
- ld [%sp + (24 + 87) * 4], %l4
- wr %l4, %asr22
-
-! End of restoring asr regs
-
-
- ldd [%sp + (24 + 64) * 4], %l0 ! Y & PSR
- ldd [%sp + (24 + 68) * 4], %l2 ! PC & NPC
-
- restore ! Ensure that previous window is valid
- save %g0, %g0, %g0 ! by causing a window_underflow trap
-
- mov %l0, %y
- mov %l1, %psr ! Make sure that traps are disabled
- ! for rett
- nop ! 3 nops after write to %psr (needed?)
- nop
- nop
-
- sethi %hi(in_trap_handler), %l4
- ld [%lo(in_trap_handler) + %l4], %l5
- dec %l5
- st %l5, [%lo(in_trap_handler) + %l4]
-
- jmpl %l2, %g0 ! Restore old PC
- rett %l3 ! Restore old nPC
-");
-
-/* Convert ch from a hex digit to an int */
-
-static int
-hex(ch)
- unsigned char ch;
-{
- if (ch >= 'a' && ch <= 'f')
- return ch-'a'+10;
- if (ch >= '0' && ch <= '9')
- return ch-'0';
- if (ch >= 'A' && ch <= 'F')
- return ch-'A'+10;
- return -1;
-}
-
-/* scan for the sequence $<data>#<checksum> */
-
-static void
-getpacket(buffer)
- char *buffer;
-{
- unsigned char checksum;
- unsigned char xmitcsum;
- int i;
- int count;
- unsigned char ch;
-
- do
- {
- /* wait around for the start character, ignore all other characters */
- while ((ch = (getDebugChar() & 0x7f)) != '$')
- ;
-
- checksum = 0;
- xmitcsum = -1;
-
- count = 0;
-
- /* now, read until a # or end of buffer is found */
- while (count < BUFMAX)
- {
- ch = getDebugChar() & 0x7f;
- if (ch == '#')
- break;
- checksum = checksum + ch;
- buffer[count] = ch;
- count = count + 1;
- }
-
- if (count >= BUFMAX)
- continue;
-
- buffer[count] = 0;
-
- if (ch == '#')
- {
- xmitcsum = hex(ch = getDebugChar() & 0x7f) << 4;
- xmitcsum |= hex(ch = getDebugChar() & 0x7f);
-
- if (checksum != xmitcsum)
- putDebugChar('-'); /* failed checksum */
- else
- {
- putDebugChar('+'); /* successful transfer */
- /* if a sequence char is present, reply the sequence ID */
- if (buffer[2] == ':')
- {
- putDebugChar(buffer[0]);
- putDebugChar(buffer[1]);
- /* remove sequence chars from buffer */
- count = strlen(buffer);
- for (i=3; i <= count; i++)
- buffer[i-3] = buffer[i];
- }
- }
- }
- }
- while (checksum != xmitcsum);
-}
-
-/* send the packet in buffer. */
-
-static void
-putpacket(buffer)
- unsigned char *buffer;
-{
- unsigned char checksum;
- int count;
- unsigned char ch;
-
- /* $<packet info>#<checksum>. */
- do
- {
- putDebugChar('$');
- checksum = 0;
- count = 0;
-
- while (ch = buffer[count])
- {
- putDebugChar(ch);
- checksum += ch;
- count += 1;
- }
-
- putDebugChar('#');
- putDebugChar(hexchars[checksum >> 4]);
- putDebugChar(hexchars[checksum & 0xf]);
-
- }
- while ((getDebugChar() & 0x7f) != '+');
-}
-
-static char remcomInBuffer[BUFMAX];
-static char remcomOutBuffer[BUFMAX];
-
-/* Indicate to caller of mem2hex or hex2mem that there has been an
- error. */
-static volatile int mem_err = 0;
-
-/* Convert the memory pointed to by mem into hex, placing result in buf.
- * Return a pointer to the last char put in buf (null), in case of mem fault,
- * return 0.
- * If MAY_FAULT is non-zero, then we will handle memory faults by returning
- * a 0, else treat a fault like any other fault in the stub.
- */
-
-static unsigned char *
-mem2hex(mem, buf, count, may_fault)
- unsigned char *mem;
- unsigned char *buf;
- int count;
- int may_fault;
-{
- unsigned char ch;
-
- set_mem_fault_trap(may_fault);
-
- while (count-- > 0)
- {
- ch = *mem++;
- if (mem_err)
- return 0;
- *buf++ = hexchars[ch >> 4];
- *buf++ = hexchars[ch & 0xf];
- }
-
- *buf = 0;
-
- set_mem_fault_trap(0);
-
- return buf;
-}
-
-/* convert the hex array pointed to by buf into binary to be placed in mem
- * return a pointer to the character AFTER the last byte written */
-
-static char *
-hex2mem(buf, mem, count, may_fault)
- unsigned char *buf;
- unsigned char *mem;
- int count;
- int may_fault;
-{
- int i;
- unsigned char ch;
-
- set_mem_fault_trap(may_fault);
-
- for (i=0; i<count; i++)
- {
- ch = hex(*buf++) << 4;
- ch |= hex(*buf++);
- *mem++ = ch;
- if (mem_err)
- return 0;
- }
-
- set_mem_fault_trap(0);
-
- return mem;
-}
-
-/* This table contains the mapping between SPARC hardware trap types, and
- signals, which are primarily what GDB understands. It also indicates
- which hardware traps we need to commandeer when initializing the stub. */
-
-static struct hard_trap_info
-{
- unsigned char tt; /* Trap type code for SPARClite */
- unsigned char signo; /* Signal that we map this trap into */
-} hard_trap_info[] = {
- {1, SIGSEGV}, /* instruction access exception */
- {0x3b, SIGSEGV}, /* instruction access error */
- {2, SIGILL}, /* illegal instruction */
- {3, SIGILL}, /* privileged instruction */
- {4, SIGEMT}, /* fp disabled */
- {0x24, SIGEMT}, /* cp disabled */
- {7, SIGBUS}, /* mem address not aligned */
- {0x29, SIGSEGV}, /* data access exception */
- {10, SIGEMT}, /* tag overflow */
- {128+1, SIGTRAP}, /* ta 1 - normal breakpoint instruction */
- {0, 0} /* Must be last */
-};
-
-/* Set up exception handlers for tracing and breakpoints */
-
-void
-set_debug_traps()
-{
- struct hard_trap_info *ht;
-
- for (ht = hard_trap_info; ht->tt && ht->signo; ht++)
- exceptionHandler(ht->tt, trap_low);
-
- /* In case GDB is started before us, ack any packets (presumably
- "$?#xx") sitting there. */
- putDebugChar ('+');
-
- initialized = 1;
-}
-
-asm ("
-! Trap handler for memory errors. This just sets mem_err to be non-zero. It
-! assumes that %l1 is non-zero. This should be safe, as it is doubtful that
-! 0 would ever contain code that could mem fault. This routine will skip
-! past the faulting instruction after setting mem_err.
-
- .text
- .align 4
-
-_fltr_set_mem_err:
- sethi %hi(_mem_err), %l0
- st %l1, [%l0 + %lo(_mem_err)]
- jmpl %l2, %g0
- rett %l2+4
-");
-
-static void
-set_mem_fault_trap(enable)
- int enable;
-{
- extern void fltr_set_mem_err();
- mem_err = 0;
-
- if (enable)
- exceptionHandler(0x29, fltr_set_mem_err);
- else
- exceptionHandler(0x29, trap_low);
-}
-
-asm ("
- .text
- .align 4
-
-_dummy_hw_breakpoint:
- jmpl %l2, %g0
- rett %l2+4
- nop
- nop
-");
-
-static void
-set_hw_breakpoint_trap(enable)
- int enable;
-{
- extern void dummy_hw_breakpoint();
-
- if (enable)
- exceptionHandler(255, dummy_hw_breakpoint);
- else
- exceptionHandler(255, trap_low);
-}
-
-static void
-get_in_break_mode()
-{
-#if 0
- int x;
- mesg("get_in_break_mode, sp = ");
- phex(&x);
-#endif
- set_hw_breakpoint_trap(1);
-
- asm("
- sethi %hi(0xff10), %l4
- or %l4, %lo(0xff10), %l4
- sta %g0, [%l4]0x1
- nop
- nop
- nop
- ");
-
- set_hw_breakpoint_trap(0);
-}
-
-/* Convert the SPARC hardware trap type code to a unix signal number. */
-
-static int
-computeSignal(tt)
- int tt;
-{
- struct hard_trap_info *ht;
-
- for (ht = hard_trap_info; ht->tt && ht->signo; ht++)
- if (ht->tt == tt)
- return ht->signo;
-
- return SIGHUP; /* default for things we don't know about */
-}
-
-/*
- * While we find nice hex chars, build an int.
- * Return number of chars processed.
- */
-
-static int
-hexToInt(char **ptr, int *intValue)
-{
- int numChars = 0;
- int hexValue;
-
- *intValue = 0;
-
- while (**ptr)
- {
- hexValue = hex(**ptr);
- if (hexValue < 0)
- break;
-
- *intValue = (*intValue << 4) | hexValue;
- numChars ++;
-
- (*ptr)++;
- }
-
- return (numChars);
-}
-
-/*
- * This function does all command procesing for interfacing to gdb. It
- * returns 1 if you should skip the instruction at the trap address, 0
- * otherwise.
- */
-
-static void
-handle_exception (registers)
- unsigned long *registers;
-{
- int tt; /* Trap type */
- int sigval;
- int addr;
- int length;
- char *ptr;
- unsigned long *sp;
- unsigned long dsr;
-
-/* First, we must force all of the windows to be spilled out */
-
- asm("
- ! Ugh. sparclet has broken save
- !save %sp, -64, %sp
- save
- add %fp,-64,%sp
- !save %sp, -64, %sp
- save
- add %fp,-64,%sp
- !save %sp, -64, %sp
- save
- add %fp,-64,%sp
- !save %sp, -64, %sp
- save
- add %fp,-64,%sp
- !save %sp, -64, %sp
- save
- add %fp,-64,%sp
- !save %sp, -64, %sp
- save
- add %fp,-64,%sp
- !save %sp, -64, %sp
- save
- add %fp,-64,%sp
- !save %sp, -64, %sp
- save
- add %fp,-64,%sp
- restore
- restore
- restore
- restore
- restore
- restore
- restore
- restore
-");
-
- if (registers[PC] == (unsigned long)breakinst)
- {
- registers[PC] = registers[NPC];
- registers[NPC] += 4;
- }
- sp = (unsigned long *)registers[SP];
-
- tt = (registers[TBR] >> 4) & 0xff;
-
- /* reply to host that an exception has occurred */
- sigval = computeSignal(tt);
- ptr = remcomOutBuffer;
-
- *ptr++ = 'T';
- *ptr++ = hexchars[sigval >> 4];
- *ptr++ = hexchars[sigval & 0xf];
-
- *ptr++ = hexchars[PC >> 4];
- *ptr++ = hexchars[PC & 0xf];
- *ptr++ = ':';
- ptr = mem2hex((char *)®isters[PC], ptr, 4, 0);
- *ptr++ = ';';
-
- *ptr++ = hexchars[FP >> 4];
- *ptr++ = hexchars[FP & 0xf];
- *ptr++ = ':';
- ptr = mem2hex(sp + 8 + 6, ptr, 4, 0); /* FP */
- *ptr++ = ';';
-
- *ptr++ = hexchars[SP >> 4];
- *ptr++ = hexchars[SP & 0xf];
- *ptr++ = ':';
- ptr = mem2hex((char *)&sp, ptr, 4, 0);
- *ptr++ = ';';
-
- *ptr++ = hexchars[NPC >> 4];
- *ptr++ = hexchars[NPC & 0xf];
- *ptr++ = ':';
- ptr = mem2hex((char *)®isters[NPC], ptr, 4, 0);
- *ptr++ = ';';
-
- *ptr++ = hexchars[O7 >> 4];
- *ptr++ = hexchars[O7 & 0xf];
- *ptr++ = ':';
- ptr = mem2hex((char *)®isters[O7], ptr, 4, 0);
- *ptr++ = ';';
-
- *ptr++ = 0;
-
- putpacket(remcomOutBuffer);
-
- while (1)
- {
- remcomOutBuffer[0] = 0;
-
- getpacket(remcomInBuffer);
- switch (remcomInBuffer[0])
- {
- case '?':
- remcomOutBuffer[0] = 'S';
- remcomOutBuffer[1] = hexchars[sigval >> 4];
- remcomOutBuffer[2] = hexchars[sigval & 0xf];
- remcomOutBuffer[3] = 0;
- break;
-
- case 'd':
- remote_debug = !(remote_debug); /* toggle debug flag */
- break;
-
- case 'g': /* return the value of the CPU registers */
- {
- ptr = remcomOutBuffer;
- ptr = mem2hex((char *)registers, ptr, 16 * 4, 0); /* G & O regs */
- ptr = mem2hex(sp + 0, ptr, 16 * 4, 0); /* L & I regs */
- memset(ptr, '0', 32 * 8); /* Floating point */
- ptr = mem2hex((char *)®isters[Y],
- ptr + 32 * 4 * 2,
- 8 * 4,
- 0); /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */
- ptr = mem2hex((char *)®isters[CCSR],
- ptr,
- 8 * 4,
- 0); /* CCSR, CCPR, CCCRCR, CCOR, CCOBR, CCIBR, CCIR */
- ptr = mem2hex((char *)®isters[ASR1],
- ptr,
- 8 * 4,
- 0); /* ASR1,ASR15,ASR17,ASR18,ASR19,ASR20,ASR21,ASR22 */
-#if 0 /* not implemented */
- ptr = mem2hex((char *) ®isters[AWR0],
- ptr,
- 32 * 4,
- 0); /* Alternate Window Registers */
-#endif
- }
- break;
-
- case 'G': /* set value of all the CPU registers - return OK */
- case 'P': /* set value of one CPU register - return OK */
- {
- unsigned long *newsp, psr;
-
- psr = registers[PSR];
-
- ptr = &remcomInBuffer[1];
-
- if (remcomInBuffer[0] == 'P') /* do a single register */
- {
- int regno;
-
- if (hexToInt (&ptr, ®no)
- && *ptr++ == '=')
- if (regno >= L0 && regno <= I7)
- hex2mem (ptr, sp + regno - L0, 4, 0);
- else
- hex2mem (ptr, (char *)®isters[regno], 4, 0);
- else
- {
- strcpy (remcomOutBuffer, "P01");
- break;
- }
- }
- else
- {
- hex2mem(ptr, (char *)registers, 16 * 4, 0); /* G & O regs */
- hex2mem(ptr + 16 * 4 * 2, sp + 0, 16 * 4, 0); /* L & I regs */
- hex2mem(ptr + 64 * 4 * 2, (char *)®isters[Y],
- 8 * 4, 0); /* Y,PSR,WIM,TBR,PC,NPC,FPSR,CPSR */
- hex2mem(ptr + 72 * 4 * 2, (char *)®isters[CCSR],
- 8 * 4, 0); /* CCSR,CCPR,CCCRCR,CCOR,CCOBR,CCIBR,CCIR */
- hex2mem(ptr + 80 * 4 * 2, (char *)®isters[ASR1],
- 8 * 4, 0); /* ASR1 ... ASR22 */
-#if 0 /* not implemented */
- hex2mem(ptr + 88 * 4 * 2, (char *)®isters[AWR0],
- 8 * 4, 0); /* Alternate Window Registers */
-#endif
- }
- /* See if the stack pointer has moved. If so, then copy the saved
- locals and ins to the new location. This keeps the window
- overflow and underflow routines happy. */
-
- newsp = (unsigned long *)registers[SP];
- if (sp != newsp)
- sp = memcpy(newsp, sp, 16 * 4);
-
- /* Don't allow CWP to be modified. */
-
- if (psr != registers[PSR])
- registers[PSR] = (psr & 0x1f) | (registers[PSR] & ~0x1f);
-
- strcpy(remcomOutBuffer,"OK");
- }
- break;
-
- case 'm': /* mAA..AA,LLLL Read LLLL bytes at address AA..AA */
- /* Try to read %x,%x. */
-
- ptr = &remcomInBuffer[1];
-
- if (hexToInt(&ptr, &addr)
- && *ptr++ == ','
- && hexToInt(&ptr, &length))
- {
- if (mem2hex((char *)addr, remcomOutBuffer, length, 1))
- break;
-
- strcpy (remcomOutBuffer, "E03");
- }
- else
- strcpy(remcomOutBuffer,"E01");
- break;
-
- case 'M': /* MAA..AA,LLLL: Write LLLL bytes at address AA.AA return OK */
- /* Try to read '%x,%x:'. */
-
- ptr = &remcomInBuffer[1];
-
- if (hexToInt(&ptr, &addr)
- && *ptr++ == ','
- && hexToInt(&ptr, &length)
- && *ptr++ == ':')
- {
- if (hex2mem(ptr, (char *)addr, length, 1))
- strcpy(remcomOutBuffer, "OK");
- else
- strcpy(remcomOutBuffer, "E03");
- }
- else
- strcpy(remcomOutBuffer, "E02");
- break;
-
- case 'c': /* cAA..AA Continue at address AA..AA(optional) */
- /* try to read optional parameter, pc unchanged if no parm */
-
- ptr = &remcomInBuffer[1];
- if (hexToInt(&ptr, &addr))
- {
- registers[PC] = addr;
- registers[NPC] = addr + 4;
- }
-
-/* Need to flush the instruction cache here, as we may have deposited a
- breakpoint, and the icache probably has no way of knowing that a data ref to
- some location may have changed something that is in the instruction cache.
- */
-
- flush_i_cache();
- return;
-
- /* kill the program */
- case 'k' : /* do nothing */
- break;
-#if 0
- case 't': /* Test feature */
- asm (" std %f30,[%sp]");
- break;
-#endif
- case 'r': /* Reset */
- asm ("call 0
- nop ");
- break;
-
-#if 0
-Disabled until we can unscrew this properly
-
- case 'b': /* bBB... Set baud rate to BB... */
- {
- int baudrate;
- extern void set_timer_3();
-
- ptr = &remcomInBuffer[1];
- if (!hexToInt(&ptr, &baudrate))
- {
- strcpy(remcomOutBuffer,"B01");
- break;
- }
-
- /* Convert baud rate to uart clock divider */
- switch (baudrate)
- {
- case 38400:
- baudrate = 16;
- break;
- case 19200:
- baudrate = 33;
- break;
- case 9600:
- baudrate = 65;
- break;
- default:
- strcpy(remcomOutBuffer,"B02");
- goto x1;
- }
-
- putpacket("OK"); /* Ack before changing speed */
- set_timer_3(baudrate); /* Set it */
- }
-x1: break;
-#endif
- } /* switch */
-
- /* reply to the request */
- putpacket(remcomOutBuffer);
- }
-}
-
-/* This function will generate a breakpoint exception. It is used at the
- beginning of a program to sync up with a debugger and can be used
- otherwise as a quick means to stop program execution and "break" into
- the debugger. */
-
-void
-breakpoint()
-{
- if (!initialized)
- return;
-
- asm(" .globl _breakinst
-
- _breakinst: ta 1
- ");
-}
-
-static void
-hw_breakpoint()
-{
- asm("
- ta 127
- ");
-}
-
-#if 0 /* experimental and never finished, left here for reference */
-static void
-splet_temp(void)
-{
- asm(" sub %sp,(16+1+6+1+121)*4,%sp ! Make room for input & locals
- ! + hidden arg + arg spill
- ! + doubleword alignment
- ! + registers[121]
-
-! Leave a trail of breadcrumbs! (save register save area for debugging)
- mov %sp, %l0
- add %l0, 24*4, %l0
- sethi %hi(_debug_registers), %l1
- st %l0, [%lo(_debug_registers) + %l1]
-
-! Save the Alternate Register Set: (not implemented yet)
-! To save the Alternate Register set, we must:
-! 1) Save the current SP in some global location.
-! 2) Swap the register sets.
-! 3) Save the Alternate SP in the Y register
-! 4) Fetch the SP that we saved in step 1.
-! 5) Use that to save the rest of the regs (not forgetting ASP in Y)
-! 6) Restore the Alternate SP from Y
-! 7) Swap the registers back.
-
-! 1) Copy the current stack pointer to global _SAVED_STACK_POINTER:
- sethi %hi(_saved_stack_pointer), %l0
- st %sp, [%lo(_saved_stack_pointer) + %l0]
-
-! 2) Swap the register sets:
- mov %psr, %l1
- sethi %hi(0x10000), %l2
- xor %l1, %l2, %l1
- mov %l1, %psr
- nop ! 3 nops after write to %psr (needed?)
- nop
- nop
-
-! 3) Save Alternate L0 in Y
- wr %l0, 0, %y
-
-! 4) Load former SP into alternate SP, using L0
- sethi %hi(_saved_stack_pointer), %l0
- or %lo(_saved_stack_pointer), %l0, %l0
- swap [%l0], %sp
-
-! 4.5) Restore alternate L0
- rd %y, %l0
-
-! 5) Save the Alternate Window Registers
- st %r0, [%sp + (24 + 88) * 4] ! AWR0
- st %r1, [%sp + (24 + 89) * 4] ! AWR1
- st %r2, [%sp + (24 + 90) * 4] ! AWR2
- st %r3, [%sp + (24 + 91) * 4] ! AWR3
- st %r4, [%sp + (24 + 92) * 4] ! AWR4
- st %r5, [%sp + (24 + 93) * 4] ! AWR5
- st %r6, [%sp + (24 + 94) * 4] ! AWR6
- st %r7, [%sp + (24 + 95) * 4] ! AWR7
- st %r8, [%sp + (24 + 96) * 4] ! AWR8
- st %r9, [%sp + (24 + 97) * 4] ! AWR9
- st %r10, [%sp + (24 + 98) * 4] ! AWR10
- st %r11, [%sp + (24 + 99) * 4] ! AWR11
- st %r12, [%sp + (24 + 100) * 4] ! AWR12
- st %r13, [%sp + (24 + 101) * 4] ! AWR13
-! st %r14, [%sp + (24 + 102) * 4] ! AWR14 (SP)
- st %r15, [%sp + (24 + 103) * 4] ! AWR15
- st %r16, [%sp + (24 + 104) * 4] ! AWR16
- st %r17, [%sp + (24 + 105) * 4] ! AWR17
- st %r18, [%sp + (24 + 106) * 4] ! AWR18
- st %r19, [%sp + (24 + 107) * 4] ! AWR19
- st %r20, [%sp + (24 + 108) * 4] ! AWR20
- st %r21, [%sp + (24 + 109) * 4] ! AWR21
- st %r22, [%sp + (24 + 110) * 4] ! AWR22
- st %r23, [%sp + (24 + 111) * 4] ! AWR23
- st %r24, [%sp + (24 + 112) * 4] ! AWR24
- st %r25, [%sp + (24 + 113) * 4] ! AWR25
- st %r26, [%sp + (24 + 114) * 4] ! AWR26
- st %r27, [%sp + (24 + 115) * 4] ! AWR27
- st %r28, [%sp + (24 + 116) * 4] ! AWR28
- st %r29, [%sp + (24 + 117) * 4] ! AWR29
- st %r30, [%sp + (24 + 118) * 4] ! AWR30
- st %r31, [%sp + (24 + 119) * 4] ! AWR21
-
-! Get the Alternate PSR (I hope...)
-
- rd %psr, %l2
- st %l2, [%sp + (24 + 120) * 4] ! APSR
-
-! Don't forget the alternate stack pointer
-
- rd %y, %l3
- st %l3, [%sp + (24 + 102) * 4] ! AWR14 (SP)
-
-! 6) Restore the Alternate SP (saved in Y)
-
- rd %y, %o6
-
-
-! 7) Swap the registers back:
-
- mov %psr, %l1
- sethi %hi(0x10000), %l2
- xor %l1, %l2, %l1
- mov %l1, %psr
- nop ! 3 nops after write to %psr (needed?)
- nop
- nop
-");
-}
-
-#endif
+// 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
projects / deliverable / binutils-gdb.git / blobdiff