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Diffstat (limited to 'sim/erc32/ChangeLog')
| -rw-r--r-- | sim/erc32/ChangeLog | 576 |
1 files changed, 576 insertions, 0 deletions
diff --git a/sim/erc32/ChangeLog b/sim/erc32/ChangeLog new file mode 100644 index 0000000..b908a50 --- /dev/null +++ b/sim/erc32/ChangeLog @@ -0,0 +1,576 @@ +1999-02-11 Hugo Tyson <hmt@cygnus.co.uk> + + * exec.c (dispatch_instruction): + Correct the sense of the + if (!sparclite) { + sregs->trap = TRAP_UNIMP; + break; + } + clause that has been pasted around: it's correct in the SCAN and + DIVScc (divide step) cases (where it was probably originally + written?), but reversed in the SDIV, SDIVcc, UDIV, UDIVcc cases + ie. instructions only in the SPARC V8 or SPARClite 86x + architectures. It was also present when not required for SMUL, + SMULcc, UMUL, UMULcc instructions that are present in all + architectures. + +1999-01-25 Hugo Tyson <hmt@cygnus.co.uk> + + * interf.c (run_sim): Fix a bug in the main loop's handling of + annulled delay slot instructions. There is precedent for this + change; the _other_ main loop in sis.c gets it right according to + my reading of the code. + + The bug is: if an interrupt happens when the next instruction + (at sregs->pc) is annulled, the trap is taken (by execute_trap()) + with the current values of PC and NPC, so when the trap returns, + the annulled instruction is indeed executed. Another giveaway is + that the annul flag is cleared in execute_trap(): the information + is demonstrably discarded. + + The solution is: perform annulling before looking for traps, in + fact it's neater to do annulling, see if there's an interrupt and + if not, do the instruction, then handle traps be they generated by + interrupts pending or by the instruction we might just have done. + That's what the sis.c one does. + +1999-01-20 Hugo Tyson <hmt@cygnus.co.uk> + + * sis.h: Add asr17 register for support of SparcLITE (at least the + Hitachi ones I find before me) + + * exec.c (dispatch_instruction): Case WRY: Allow write of asr17 if + sparclite. Other ASR numbers than 17 or 0 (Y) trap out. + Case RDY: Allow read of asr17 if sparclite. Other ASRs ditto. + (execute_trap): Do single-vector-trapping if asr17 bit 0 is set. + (init_regs): Initialize y and asr17. + NB: In instruction-set space, the Y register is asr0; the + instructions have different names for human reasons only. + + * sis.c: + * interf.c: Set boolean mode variable dumbio if invoked with + argument "-dumbio" and mention it of verbose. + * erc32.c: if "dumbio" is set, do not assume that there is a + terminal type device attached to stdin/stdout. Do not set + buffering or mess with tcsetattr or do any read operations in + order to make UART interrupts; not input data is supported. + This is necessary to allow the sim to be used within the eCos + testing infrastructure where stdin/stdout are pipes to a TCL + program; the sim hangs otherwise. + +Thu Jul 23 07:17:03 1998 Mark Alexander <marka@cygnus.com> + + * exec.c (dispatch_instruction): Add SPARClite 'scan' instruction. + +Tue Jul 7 21:12:41 1998 Mark Alexander <marka@cygnus.com> + + * func.c (bfd_load): Add special handling of a.out executables. + +Sat Jun 13 08:33:25 1998 Mark Alexander <marka@cygnus.com> + + * func.c (bfd_load): Print correct endianness. + * interf.c (run_sim): Print debugging information if verbosity level + is greater than 2. + (sim_open): Repeated -v options now increment verbosity level. + (sim_store_register): Handle little-endian case. + (flush_window): Print debugging information if verbosity level + is greater then 2. + +Tue Jun 2 15:20:35 1998 Mark Alexander <marka@cygnus.com> + + * interf.c (sim_open): Use revamped memory_read, which makes + byte-swapping unnecessary. Add -sparclite-board option for + emulating RAM found on typical SPARClite boards. Print + error message for unrecognized option. + * erc32.c: Change RAM address and size from constants to variables, + to allow emulation of SPARClite board RAM. + (fetch_bytes, store_bytes): New helper functions for revamped + mememory_read and memory_write. + (memory_read, memory_write): Rewrite to store bytes in target + byte order instead of storing words in host byte order; this + greatly simplifies support of little-endian programs. + (get_mem_ptr): Remove unnecessary byte parameter. + (sis_memory_write, sis_memory_read): Store words in target + byte order instead of host byte order. + (byte_swap_words): Remove, no longer needed. + * sis.h ((byte_swap_words): Remove declaration, no longer needed. + (memory_read): Add new sz parameter. + * sis.c (run_sim): Use revamped memory_read, which makes + byte-swapping unnecessary. + * exec.c (dispatch_instruction): Use revamped memory_read, which + makes byte-swapping and double-word fetching unnecessary. + * func.c (sparclite_board): Declare new variable. + (get_regi): Handle little-endian data. + (bfd_load): Recognize little-endian SPARClite as having + little-endian data. + +Fri May 22 14:23:16 1998 Mark Alexander <marka@cygnus.com> + + * erc32.c (port_init): Print messages only if sis_verbose is true. + * func.c (bfd_load): Ditto. + * interf.c (sim_open): Ditto. + +Thu May 14 23:10:48 1998 Mark Alexander <marka@cygnus.com> + + * sis.h (uint64, int64): Define. + * exec.c (SDIV, SDIVCC, UDIV, UDIVCC): Define new opcodes. + * (mul64): Simplify calculation of negative result. + * (div64): New helper function for 64-bit division. + * (dispatch_instruction): Add emulation of SDIV, SDIVCC, UDIV, + and UDIVCC. + +Wed May 13 14:59:54 1998 Mark Alexander <marka@cygnus.com> + + * erc32.c (close_port): Don't close stdin; it kills GDB. + (byte_swap_words): New function. + * sis.h: (byte_swap_words): Declare. + * interf.c (run_sim): Always fetch instructions as big-endian. + * sis.c (run_sim): Ditto. + +Tue Apr 28 18:33:31 1998 Geoffrey Noer <noer@cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Sun Apr 26 15:31:55 1998 Tom Tromey <tromey@creche> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + * config.in: Ditto. + +Sun Apr 26 15:20:17 1998 Tom Tromey <tromey@cygnus.com> + + * acconfig.h: New file. + * configure.in: Reverted change of Apr 24; use sinclude again. + +Fri Apr 24 14:16:40 1998 Tom Tromey <tromey@creche> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + * config.in: Ditto. + +Fri Apr 24 11:19:52 1998 Tom Tromey <tromey@cygnus.com> + + * configure.in: Don't call sinclude. + +Sat Apr 18 12:00:16 1998 Mark Alexander <marka@cygnus.com> + + * func.c (disp_fpu): Fix build problem on big-endian hosts. + +Wed Apr 8 19:33:34 1998 Mark Alexander <marka@cygnus.com> + + * erc32.c (sim_stop): Handle SIGINT gracefully. + * interf.c (sim_open): Don't catch SIGINT; GDB will do that for us. + +Wed Apr 8 18:29:40 1998 Mark Alexander <marka@cygnus.com> + + * exec.c (dispatch_instruction): Change how carry out is calculated + in DIVSCC. Add emulation of SMULCC, UMUL, and UMULCC. + +Sat Apr 4 20:36:25 1998 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Wed Apr 1 21:19:18 1998 Mark Alexander <marka@cygnus.com> + + * end.c: Update to version 2.7.5, fix compiler warnings and bugs. + * erc32.c: Ditto. + * exec.c: Ditto. + * float.c: Ditto. + * func.c: Ditto. + * help.c: Ditto. + * interf.c: Ditto. + * sis.c: Ditto. + * sis.h: Ditto. + +Fri Mar 27 16:15:52 1998 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Wed Mar 25 12:35:29 1998 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Wed Mar 18 12:38:12 1998 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Tue Feb 17 12:41:11 1998 Andrew Cagney <cagney@b1.cygnus.com> + + * interf.c (sim_store_register, sim_fetch_register): Pass in + length parameter. Return -1. + +Sun Feb 1 16:47:51 1998 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Sat Jan 31 18:15:41 1998 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Mon Jan 19 22:26:29 1998 Doug Evans <devans@seba> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Mon Dec 15 23:17:11 1997 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + * config.in: Ditto. + +Thu Dec 4 09:21:05 1997 Doug Evans <devans@canuck.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Fri Oct 3 09:28:00 1997 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Wed Sep 24 17:38:57 1997 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Tue Sep 23 11:04:38 1997 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Mon Sep 22 11:46:20 1997 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Fri Sep 19 17:45:25 1997 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Mon Sep 15 17:36:15 1997 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Wed Aug 27 18:13:22 1997 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + * config.in: Ditto. + +Tue Aug 26 10:38:20 1997 Andrew Cagney <cagney@b1.cygnus.com> + + * float.c (__setfpucw): Compile on any i386 target. Not just NT. + + * interf.c (sim_kill): Delete. + (sim_create_inferior): Add ABFD argument. Initialize PC from ABFD + argument. + (sim_load): Don't save start address. + (start_address): Delete variable. + +Mon Aug 25 17:50:22 1997 Andrew Cagney <cagney@b1.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + * config.in: Ditto. + +Mon Aug 25 16:19:49 1997 Andrew Cagney <cagney@b1.cygnus.com> + + * interf.c (sim_open): Add ABFD argument. Change ARGV to PARGV. + +Mon Jun 30 11:45:25 1997 Doug Evans <dje@canuck.cygnus.com> + + * Makefile.in (install-sis): Change $(srcdir)/sis to sis. + +Wed May 28 09:46:13 1997 Andrew Cagney <cagney@b1.cygnus.com> + + * interf.c (sim_set_callbacks): Drop SD argument - not applicable. + (sim_open): Add callback arg, save it. + +Thu Apr 24 00:39:51 1997 Doug Evans <dje@canuck.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Tue Apr 22 11:05:01 1997 Doug Evans <dje@canuck.cygnus.com> + + * interf.c (sim_open): Undo patch to add -E support. + +Thu Apr 17 03:03:56 1997 Doug Evans <dje@canuck.cygnus.com> + + * interf.c (sim_open): Ignore -E arg. + (start_address): New static local. + (sim_load): Return SIM_RC. New arg abfd. Set start_address from bfd. + (sim_create_inferior): Return SIM_RC. Delete arg start_address. + +Tue Apr 15 15:16:11 1997 Ian Lance Taylor <ian@cygnus.com> + + * Makefile.in (install-sis): Depend upon installdirs. Use + $(program_transform_name) directly, rather than using + $(INSTALL_XFORM). + +Mon Apr 7 15:45:02 1997 Andrew Cagney <cagney@kremvax.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + * config.in: Ditto. + +Wed Apr 2 15:06:28 1997 Doug Evans <dje@canuck.cygnus.com> + + * interf.c (sim_open): New arg `kind'. + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Wed Apr 2 14:34:19 1997 Andrew Cagney <cagney@kremvax.cygnus.com> + + * configure: Regenerated to track ../common/aclocal.m4 changes. + +Mon Mar 17 15:10:07 1997 Andrew Cagney <cagney@kremvax.cygnus.com> + + * configure: Re-generate. + +Thu Mar 13 12:46:04 1997 Doug Evans <dje@canuck.cygnus.com> + + * interf.c (sim_open): New SIM_DESC result. Argument is now in + argv form. + (other sim_*): New SIM_DESC argument. + +Tue Feb 4 13:35:20 1997 Doug Evans <dje@canuck.cygnus.com> + + * Makefile.in (@COMMON_MAKEFILE_FRAG): Use + COMMON_{PRE,POST}_CONFIG_FRAG instead. + * configure.in: sinclude ../common/aclocal.m4. + * configure: Regenerated. + +Thu Jan 23 11:46:23 1997 Stu Grossman (grossman@critters.cygnus.com) + + * configure configure.in Makefile.in: Update to new configure + scheme which is more compatible with WinGDB builds. + * configure.in: Improve comment on how to run autoconf. + * configure: Re-run autoconf to get new ../common/aclocal.m4. + * Makefile.in: Use autoconf substitution to install common + makefile fragment. + +Wed Dec 4 18:25:04 1996 Rob Savoye <rob@chinadoll.cygnus.com> + + * interf.c (run_sim): Stop the simulator and reset the stdio after + breakpoints. + +Tue Dec 3 11:54:37 1996 Rob Savoye <rob@chinadoll.cygnus.com> + + * configure.in: Look for libtermcap.a. + * Makefile.in: Only link in -ltermcap if it exists. + * erc32.c: Update to version 2.6a. Fix uart handling. + * exec.c: Update to version 2.6a. Add sparclite support. + * float.c: Update to version 2.6a. Convert comments to + preprocessor warnings. Add __setfpucw() for i385 hosts so floating + point exceptions work on win32. + * func.c: Update to version 2.6a. Fix uart handling, add support + for user error traps. + * help.c: Update to version 2.6a. Add help note on user error + traps. + * interf.c: Update to version 2.6a. Fix uart handling, and add + sparclite support. + * examples/gccx: Use sparclite cross compiler, not native gcc. + * examples/srt0.S: Use "mov" rather than "wr" for manipulating + the psr register. + +Mon Nov 25 08:28:10 1996 Fred Fish <fnf@cygnus.com> + + * Makefile.in (run.o): Remove this rule, it hides the one in + ../common/Make-common.in that correctly references the source + in the sibling ../common directory. + +Wed Nov 20 01:30:12 1996 Doug Evans <dje@canuck.cygnus.com> + + * Makefile.in: Delete stuff moved to ../common/Make-common.in. + (SIM_{OBJS,EXTRA_LIBS,EXTRA_LIBDEPS,EXTRA_ALL,EXTRA_INSTALL}): Define. + (SIM_{EXTRA_CLEAN,EXTRA_CFLAGS}): Define. + * configure.in: Simplify using macros in ../common/aclocal.m4. + Call AC_CHECK_HEADERS(stdlib.h). + * configure: Regenerated. + * config.in: New file. + * func.c (sim_set_callbacks): Delete, moved to + * interf.c (sim_set_callbacks): here. + (sim_callback): New global. + Rewrite all calls to printf_filtered to go through callback. + (sim_size,sim_trace): New functions. + (sim_{insert,remove}_breakpoint): #if 0 out. + * sis.c: #include "config.h". #include <stdlib.h> if present. + (main): Coerce fprintf arg to INIT_DISASSEMBLE_INFO to fprintf_ftype. + * sis.h: #include "callback.h". + * run.c: Deleted, using one in ../common now. + +Thu Oct 3 16:12:03 1996 Jason Molenda (crash@godzilla.cygnus.co.jp) + + * Makefile.in (clean): Move config.log to distclean. + +Wed Oct 2 16:57:57 1996 Jason Molenda (crash@godzilla.cygnus.co.jp) + + * Makefile.in (clean): Also remove config.log. + +Sat Sep 14 00:00:46 1996 Ian Lance Taylor <ian@cygnus.com> + + * Makefile.in (CC_FOR_BUILD): New variable. + (AR, AR_FLAGS, BISON, MAKEINFO): Remove duplicate variables. + (RANLIB, CC): Likewise. + (end): Use $(CC_FOR_BUILD), not $(CC). + * configure.in: Set CC_FOR_BUILD. + * configure: Rebuild. + +Sun Sep 8 14:04:37 1996 Stu Grossman (grossman@critters.cygnus.com) + + * erc32.c (port_init): Disable this for __GO32__ (got no pty's + there either...). + +Mon Aug 12 17:04:58 1996 Stu Grossman (grossman@critters.cygnus.com) + + * erc32.c: Don't include sys/ioctl.h or sys/file.h. They aren't + necessary. + * (port_init): Don't even *try* to open pty's under _WIN32. + * Use SIM_ADDR, not caddr_t for declaring vars that hold addresses. + * float.c: Get rid of #warning. Makes Microsoft C barf. + * interf.c (sim_open): Cast fprintf to (fprintf_ftype) to fix + compiler warning. + * (sim_load sim_create_inferior sim_read): Use prototypes only in + decls, not defs. + * Get rid of enum sim_stop. It's defined in remote-sim.h. + * (sim_stop_reason): Define SIGTRAP if _WIN32. + * sis.h: Include ansidecl.h and remote-sim.h. + +Wed Jul 3 16:05:23 1996 Stu Grossman (grossman@critters.cygnus.com) + + * erc32.c (mec_reset mec_read mec_write memory_read memory_write), + sis.h: Get rid of all uses of long long's. + * (close_port read_uart write_uart uarta_tx): Don't seg fault + when can't open pty's. + * exec.c: Add two new instructions: smul, and divscc. + * interf.c (flush_windows): New routine to flush the register + windows out to the stack just before returning to GDB. Makes + backtraces work much better. + +Wed Jun 26 12:19:11 1996 Jason Molenda (crash@godzilla.cygnus.co.jp) + + * Makefile.in (bindir, libdir, datadir, mandir, infodir, includedir, + INSTALL_PROGRAM, INSTALL_DATA): Use autoconf-set values. + (docdir, oldincludedir): Removed. + * configure.in (AC_PREREQ): autoconf 2.5 or higher. + (AC_PROG_INSTALL): Added. + * configure: Rebuilt. + +Mon Jun 24 14:19:07 1996 Ian Lance Taylor <ian@cygnus.com> + + * configure.in: Call AC_PROG_CC before running configure.host. + * configure: Rebuild with autoconf 2.10. + +Tue Jun 4 10:37:12 1996 Tom Tromey <tromey@csk3.cygnus.com> + + * Makefile.in (install): Don't check to see if tooldir exists. + Make $(tooldir) and $(tooldir)/bin. + +Mon Jun 3 12:33:38 1996 Ian Lance Taylor <ian@cygnus.com> + + * Makefile.in (end.h): Use explicit ./ when running end. + +Sun May 19 21:05:31 1996 Rob Savoye <rob@chinadoll.cygnus.com> + + * func.c(bfd_load): Don't try to print the filename if the pfbd is + NULL. + * interf.c(sim_load): Pass the whole string, not just the first + byte. + +Version 2.1 26-02-96 +-------------------- + +* Fixed bug in "go" command. + +version 2.0 05-02-96 +-------------------- + +* Fixed bug in interrupt force register (erc32.c). + +* Change file load function to use bfd_openr. + +* SIS should now be endian independent. + +version 1.8 24-11-95 +-------------------- + +* Fixed FPU timing - some sequences of FPU instructions did not calculate + the resource dependencies right. + +* Corrected STDFQ when qne = 0 (again!). The ftt is set to sequence_error + but no FPU trap is generated. + +version 1.7.1 31-10-95 +-------------------- + +* Corrected STDFQ when qne = 0. Now, a trap is immidiately generated but + the FPU stays in execute mode. + +* Corrected JMPL and RETT timing (these instructions takes two cycles). + + +version 1.7 25-10-95 +-------------------- + +* Interrupt during annuled instruction corrupted return address - fixed. + + +version 1.6.2 25-10-95 +-------------------- + +* Added -DFAST_UART to Makefile + + +version 1.6.1 24-10-95 +-------------------- + +* Fixed bug in STDFQ which caused bus error + + +version 1.6 02-10-95 +-------------------- + +* Modified srt0.s to include code that initiates registers in IU and FPU + and initializes the data segment. The simulator 'load' command does not + longer initialize the data segment! + +* Corrected MEC timer operation; scalers now divide the frequency by + (scaler_value + 1). + +* MEC breakpoints are not checked during store operation + + +version 1.5 14-09-95 +-------------------- + +* Fixed some bugs in the cycle counting for IU & FPU instructions. + +* Fixed bug that allowed an annuled instruction to cause memory exception. + +* The *ws parameter in mem.c should now contain the number of waitstates + required by the memory access (was total number of cycles). + +* The supplied srt0.s now clears the BSS (thanks Joel). + +version 1.4 22-08-95 +-------------------- + +* Added a '-g' switch to enable/disable the GNU readline(), which cause +some problems on solaris 2.x machines. + +* Enabled MEC watchpoint and breakpoint function to mem.c. Performance +may suffer a bit ... + +NOTE: The UARTs are now connected to /dev/ttypc and /dev/ttypd. + +version 1.3 26-07-95 +-------------------- + +* Fixed bug in mulscc instruction (how could that ever have worked?) + +* Fixed bug in UART B (flushed characters on UART A), thanks Paul. + +version 1.2 13-07-95 +-------------------- + +* Fixed bug in interrupt handling (wrong interrupt selected when more that +one interrupt pending) + +* Fixed updating of condition codes during logical instructions (carry and +overflow were not reset) + +* Fixed bug in WRTBR (tt field was wrongly over-written) + +version 1.1 07-07-95 +-------------------- + +* Fixed several bugs in the interrupt handler and callback routines. +(reported by Paul Warren, Alsys) |