Subversion Repositories openrisc

2009-02-04  Nick Garnett  <nickg@ecoscentric.com>

        * include/hal_arch.h: Ifdef bit index macros to allow them to be
        overridden by variant or platform HAL.

2004-05-27  Gary Thomas  <gary@mlbassoc.com>

        * src/redboot_linux_exec.c (do_exec): Be sensitive to value in
        "entry_address" as this can indicate if the image to be executed
        is valid (the "load" functions set it to "NO_MEMORY" when invalid)

2004-05-16  Andrew Dyer  <adyer@righthandtech.com>

        * include/hal_cache.h: Changed the calculation of _IWAY and _DWAY
        for the case where HAL_MIPS_CACHE_INSN_USES_LSB is set to only
        affect the LSBs in the CACHE instruction offset field.  #define
        MIPS cache ops and use them instead of constants in the
        HAL_?CACHE_* macros below.

2004-04-22  Jani Monoses <jani@iv.ro>

         * cdl/hal_mips.cdl :
         Invoke tail with stricter syntax that works in latest coreutils. 

2003-08-06  Andy Dyer <adyer@righthandtech.com>

        * include/arch.inc: Changed mask for cause register interrupt bits
        to 0x3f from 0x7f. The extra bit was wrong, but in all current
        implementations, benign.

        * include/mips-stub.h: Disabled use of 64 bit registers for TX49,
        so we can work with the public release compiler.

2003-04-27  Jonathan Larmour  <jifl@eCosCentric.com>

        * src/vectors.S: Pass saved interrupt state pointer to interrupt
        handlers as (undeclared) third argument. Suggested by
        Ryouzaburou Suzuki.

2003-03-11  Mark Salter  <msalter@redhat.com>

        * src/redboot_linux_exec.c (do_exec): Call eth_drv_stop as necessary.

2003-02-27  Nick Garnett  <nickg@calivar.com>

        * include/mips-stub.h: Disabled option that makes MIPS32 targets
        use 64 bit registers in GDB protocol. The standard GDB does not
        support this, only MIPS own version.

2003-01-31  Mark Salter  <msalter@redhat.com>

        * src/hal_syscall.c (hal_syscall_handler): Let generic syscall code
        handle exit.

2003-01-09  Tim Michals  <t.michals@attbi.com>

        * src/hal_misc.c (hal_delay_us): Use HAL_CLOCK_READ instead of inline
        asm, to allow for variant/platform HAL packages overriding.

2002-12-12  Bart Veer  <bartv@ecoscentric.com>

        * include/hal_cache.h: allow for cache flushes etc. where the base
        address is not aligned to a cacheline boundary.

2002-08-02  Andrew Lunn <Andrew.Lunn@ascom.ch>

        * cdl/hal_mips.cdl: Redboot exec command can now be disabled 
          by CDL
        
2002-05-17  Jesper Skov  <jskov@redhat.com>

        * include/hal_intr.h: Fix CYGNUM_HAL_EXCEPTION_MIN definition so
        it reflects the FPU configuration.

2002-04-30  Jesper Skov  <jskov@redhat.com>

        * include/hal_intr.h: Only define decoded FPU vectors if these are
        actually used. This allows tests to check for capabilities and do
        N/A when appropriate.

2002-04-15  Jonathan Larmour  <jlarmour@redhat.com>

        * src/hal_syscall.c (hal_syscall_handler): Add extra sig argument to
        __do_syscall.

2002-03-21  Nick Garnett  <nickg@redhat.com>

        * include/hal_cache.h: Added macros to adjust the size argument to
        some of the cache macros to a whole multiple of the cache line
        size. Otherwise, for some values of the arguments, we can miss the
        last line.

2001-12-17  Jesper Skov  <jskov@redhat.com>

        * include/hal_arch.h (CYGARC_HAL_GET_RETURN_ADDRESS,
        (CYGARC_HAL_GET_RETURN_ADDRESS_BACKUP): Added dummy arguments.

        * src/hal_misc.c (cyg_hal_exception_handler): Fix warning.

2001-12-04  Nick Garnett  <nickg@redhat.com>

        * src/hal_misc.c: Added hal_arch_program_new_stack() to support
        running user programs on a new stack placed at the top of RAM.

        * src/vectors.S: Added hal_program_new_stack function to support
        hal_arch_program_new_stack(). This does the actual stack
        switching.

        * include/mips-stub.h (NUMREGS): 
        * include/mips-regs.h (NUM_REGS):
        Added test to correctly define these when the target expects the
        CP0 registers to be reported to GDB

        * include/hal_arch.h: Added support for fetching CP0 registers in
        MIPS64 platforms for GDB. Reorganized the code slightly.

        * cdl/hal_mips.cdl:
        Added define_proc to define HAL_ARCH_PROGRAM_NEW_STACK.

2001-11-16  Nick Garnett  <nickg@redhat.com>

        * src/hal_misc.c (hal_msbit_index): Fixed this function so that it
        actually works!

2001-10-24  Nick Garnett  <nickg@redhat.com>

        * src/vectors.S:
        Change behaviour of __default_exception_vsr to only switch to
        interrupt stack if we are not already on it. This is now similar
        to the way the interrupt VSR operates. This is necessary since it
        is possible to take exceptions (such as TLB miss or address error)
        while running in the GDB stubs.

        * src/hal_misc.c (cyg_hal_exception_handler): Ensure that PC
        planted when catching stub exceptions gets sign extended where
        necessary in 64 bit platforms.

2001-10-05  Jesper Skov  <jskov@redhat.com>

        * include/hal_arch.h: Provide CYGARC_CACHED_ADDRESS() and friends
        without casting for use in assembler files.

2001-09-17  Nick Garnett  <nickg@redhat.com>

        * src/hal_misc.c (hal_delay_us): Rewrote this routine to work
        correctly in higher speed CPUs. The counter register counts at
        half CPU clock speed. The original ticks calculation could
        overflow very easily. For example in a 133MHz CPU, it overflowed
        with any argument greater than 32! This is another of those "how
        did it ever work?" things.

        * include/hal_arch.h: Added casts to CYGARC_PHYSICAL_ADDRESS() and
        friends.

2001-09-07  Nick Garnett  <nickg@redhat.com>

        * include/mips-stub.h: Returned target_register_t to long long
        type for VR4300 target. This is the only platform that does 64bit
        register saves/restores, and the GDB registers must be full sized.

        * include/arch.inc: Added option to select correct initial SR
        value when the startup is ROMRAM.
        Disabled setting of status and config registers when using a ROM
        monitor. The monitor should have already set these to appropriate
        values.

2001-08-22  Gary Thomas  <gthomas@redhat.com>

        * src/redboot_linux_exec.c: 
        printf() is no longer a part of RedBoot.  Thus all programs
        must use diag_printf() and related functions instead.

2001-08-01  Hugo Tyson  <hmt@redhat.com>

        * src/vectors.S (restore_state): (see the change below 2001-07-03)
        Make the code to keep SR IM bits from the ISR conditional on a CDL
        interface so that it is selected on a per-platform or variant basis.

        * cdl/hal_mips.cdl (CYGINT_HAL_MIPS_INTERRUPT_RETURN_KEEP_SR_IM):
        New interface to control conditional code.

        * include/hal_intr.h (HAL_ENABLE_INTERRUPTS): Make this (et al)
        conditional on CYGHWR_HAL_INTERRUPT_ENABLE_DISABLE_RESTORE_DEFINED
        so that the variant HAL can define these insead, in the usual
        manner.

2001-07-20  Jonathan Larmour  <jlarmour@redhat.com>

        * src/redboot_linux_exec.c: Adjust below change by getting baud
        rate, thus allowing for runtime baud rate changes, and no
        dependency on platform CDL defines.

2001-07-19  Gary Thomas  <gthomas@redhat.com>

        * src/redboot_linux_exec.c: Define DEFAULT_BAUD.  The supporting
        CDL differs from platform to platform, so this define is used to
        ameliorate the differences.

2001-07-17  David Woodhouse <dwmw2@redhat.com>

        * src/redboot_linux_exec.c: Add environment stuff to the 'exec' 
        command, also make it use the entry point from the last 'load' 
        command if there is one.
        Also add '-w' delay option.

2001-07-09  David Woodhouse <dwmw2@redhat.com>

        * src/redboot_linux_exec.c: New 'exec' command for RedBoot, mostly
        copied from the SH version, hacked to pass arguments in argc/argv
        form as that seems to be what most Linux/MIPS kernels expect to
        receive from PMON.
        * cdl/hal_mips.cdl: Add necessary magic for the above.
        
2001-07-03  Hugo Tyson  <hmt@redhat.com>

        * src/vectors.S (restore_state): When restoring the CPU status
        register right at the end of interrupt processing, keep the
        current settings of the IM[7:0] bits within the status register.
        Depending on platform, these may be used as interrupt masks, so if
        an ISR or DSR masks interrupts they must be preserved.  If they
        are not used, then this does no harm.
        #ifdef'd out for CYG_HAL_MIPS_R3900 anyway 'cos the TX39 does not
        use these bits at all.

2001-06-27  Mark Salter  <msalter@redhat.com>

        * src/vectors.S (_start): Add code to switch from KSEG1 to KSEG0 if
        CYGARC_START_FUNC_UNCACHED.

2001-06-27  Hugo Tyson  <hmt@redhat.com>

        * src/hal_misc.c: Include <cyg/hal/hal_if.h> for definition of
        hal_ctrlc_isr() and hence warnings reduced.

2001-06-19  Mark Salter  <msalter@redhat.com>

        * include/hal_arch.h: Support saving/restoring CP0 registers for GDB.

        * include/mips-stub.h (NUMREGS): Use different value for mips32.

2001-06-08  Jesper Skov  <jskov@redhat.com>

        * include/mips.inc (FUNC_START): Added .noreorder.

2001-06-05  Hugo Tyson  <hmt@redhat.com>

        * include/mips-stub.h: Configuration messing to avoid the need to
        add a platform-specific clause for every new 32-as-64-to-GDB
        target that we make.  The header can now pick REGSIZE,
        target_register_t and so on according to a generic define as well
        as specific platform defs.

        * cdl/hal_mips.cdl: Provide interface for the above, so targets
        can implement it.  CYGINT_HAL_MIPS_STUB_REPRESENT_32BIT_AS_64BIT

2001-02-27  Chris Morrow  <cmorrow@YottaYotta.com>

        * src/vectors.S (hal_zero_bss): Oops, allow for bss being multiple
        of block size. And add delay slot.

2001-02-26  Chris Morrow  <cmorrow@YottaYotta.com>

        * src/vectors.S (hal_zero_bss): Implemented in assembler for speed.
        * src/hal_misc.c (hal_zero_bss): Delete.

2001-02-15  Nick Garnett  <nickg@cygnus.co.uk>

        * src/hal_misc.c: Added option to call hal_ctrlc_isr() in default
        ISR when in RedBoot.

2001-02-12  Nick Garnett  <nickg@cygnus.co.uk>

        * include/mips.inc: Added some extra CP0 register names.

2001-02-09  Jesper Skov  <jskov@redhat.com>

        * src/vectors.S: Small tweak of comments to work around tools problem
        with mipsisa32 tools.

2001-01-31  Nick Garnett  <nickg@cygnus.co.uk>

        * include/mips-stub.h: Added prototypes for __is_bsp_syscall() and
        hal_syscall_handler().

        * include/hal_arch.h:
        Reorganized HAL_SavedRegisters structure to work properly with a
        64 bit processor. Fields are now correctly sized, and aligned on
        the right boundaries.

        * include/arch.inc:
        Added option for variant and platform to supply extra bits to be
        added to INITIAL_SR.
        Reorganized register save area layout to match changes in
        hal_arch.h.
        Added macros sva, lva, mvatc0, mvafc0 to transfer 64 bit items to
        and from memory/CP0 (*va* is used because most such values are
        (virtual) addresses).

        * src/vectors.S: Added use of *va* macros where appropriate.
        
        * src/mips-stub.c: Added __is_bsp_syscall() function.

        * src/hal_syscall.c: Added this file to support GNUPro system
        calls in RedBoot.

        * cdl/hal_mips.cdl: Added hal_syscall.c to compile list.

2001-01-26  Jesper Skov  <jskov@redhat.com>

        * include/hal_intr.h: Added extern for hal_delay_us.

2001-01-26  Jesper Skov  <jskov@redhat.com>

        * include/variant.inc: Make hal_intc_decode macro mask the cause
        register with the status (interrupt mask) register.

2001-01-25  Jesper Skov  <jskov@redhat.com>

        * include/arch.inc: Allow hal_intc_decode to be defined by variant
        or platform.

2000-12-06  Jesper Skov  <jskov@redhat.com>

        * include/hal_intr.h (HAL_DELAY_US): Added.
        * src/hal_misc.c (hal_delay_us): Added. And fixed to work with an
        incrementer that ticks at the pipeline clock rate.

        * include/mips-stub.h: RM7000 is also a 64bit CPU.

2000-12-05  Jonathan Larmour  <jlarmour@redhat.com>

        * include/hal_cache.h: IWAY->_IWAY, DWAY->_DWAY for namespace 
        cleanliness

2000-12-05  Jesper Skov  <jskov@redhat.com>

        * include/hal_cache.h: Use variant specific method to select cache
        WAY.

2000-10-20  Jesper Skov  <jskov@redhat.com>

        * src/hal_misc.c: Update __mem_fault_handler declaration.

2000-09-15  Jesper Skov  <jskov@redhat.com>

        * include/hal_intr.h (HAL_DEFAULT_ISR): Fix warning.
        (HAL_DEFAULT_ISR): Undo that change.

2000-09-14  Jesper Skov  <jskov@redhat.com>

        * include/hal_intr.h: Only define _FPE when there's a FPU.

2000-09-13  Jesper Skov  <jskov@redhat.com>

        * include/hal_intr.h (HAL_VSR_SET_TO_ECOS_HANDLER): Fix compiler
        warning.

        * src/vectors.S: Fully decode TLB related exceptions.
        * src/hal_misc.c (cyg_hal_exception_handler): Undid below change.

        * src/hal_misc.c (cyg_hal_exception_handler): Base vector
        calculation on cause register, not the provided vector value.

2000-09-12  Jesper Skov  <jskov@redhat.com>

        * include/hal_intr.h: Added definition for decoded FPU
        exceptions.

        * src/hal_misc.c (cyg_hal_exception_handler): Decode FPU
        exceptions.

2000-09-07  Jesper Skov  <jskov@redhat.com>

        * include/basetype.h: Removed change from yesterday.

        * include/hal_intr.h (CYGNUM_HAL_EXCEPTION_FPU): Associated to FPE
        exceptions.

2000-09-06  Jesper Skov  <jskov@redhat.com>

        * include/basetype.h: Override the alignment macros for the MIPS
        architecture. The MIPS compiler only alows a maximum of 4 bytes
        of alignment where as the default is 8

        * include/hal_cache.h (_HAL_ASM_DCACHE_ALL_WAYS): Force d-cache
        selection.

2000-09-01  Jonathan Larmour  <jlarmour@redhat.com>

        * include/mips-stub.h: No longer need to define
        CYGARC_REGSIZE_DIFFERS_FROM_TARGET_REGISTER_T
        (CYGARC_SIGN_EXTEND_REGISTERS): 

        * include/mips-stub.h: Change vr4300 register sizes to use 32-bit
        target_register_t, and tell the generic stub to use sign extension.
        Ditto for tx49
        * include/hal_cache.h (_HAL_ASM_SET_MIPS_ISA): Don't use pasting
        when it doesn't result in a preprocessing token. Just use string
        concatenation.

2000-07-21  Drew Moseley  <dmoseley@redhat.com>

        * src/vectors.S: Only jump uncached to _start if
        CYGARC_START_FUNC_UNCACHED is defined.

2000-07-20  Drew Moseley  <dmoseley@redhat.com>

        * include/mips-stub.h: Define CYGARC_REGSIZE_DIFFERS_FROM_TARGET_REGISTER_T
        for the MIPS32 targets since GDB needs 64 bit registers regardless of
        what size we are really storing.

2000-07-19  Drew Moseley  <dmoseley@redhat.com>

        * include/mips-stub.h (CYGARC_SIGN_EXTEND_REGISTERS): Make sure
        the stub sign-extends the registers before returning them to GDB.

2000-07-14  Drew Moseley  <dmoseley@redhat.com>

        * src/vectors.S: Added hal_reset_vector_first_code and
        hal_early_init macros.

        * src/mips-stub.c (__install_breakpoints): Also install any
        breakpoints in the list.

        * include/mips-regs.h: Added a few new register definitions.

        * include/hal_intr.h: Added CYGNUM_HAL_EXCEPTION_INTERRUPT.

        * include/hal_arch.h: Added some macros for jumping between cached
        and uncached.

        * include/mips-stub.h: Renamed some enums to work around namespace
        corruption.  Added breakpoint support in the HAL.

2000-07-14  Drew Moseley  <dmoseley@redhat.com>

        * include/arch.inc: Support for mips3264.
        * include/mips-stub.h: Ditto.

2000-06-21  Nick Garnett  <nickg@cygnus.co.uk>

        * src/mips-stub.c: Removed use of CYG_LABEL_NAME() and added
        underscore to _breakinst.

        * include/basetype.h: Removed definition of CYG_LABEL_NAME().

2000-06-08  Jesper Skov  <jskov@redhat.com>

        * src/hal_misc.c (hal_arch_default_isr): Removed what's now a
        generic C-c check in the common HAL.

        * include/hal_arch.h (CYGARC_HAL_GET_RETURN_ADDRESS): Defined.

2000-06-08  Jesper Skov  <jskov@redhat.com>

        * include/hal_arch.h (CYGARC_HAL_SAVE_GP, CYGARC_HAL_RESTORE_GP):
        Added.

2000-05-25  Jesper Skov  <jskov@redhat.com>

        * include/basetype.h: 
        * src/mipsfp.c: 
        Support FPU double-LE layout in BE mode.

2000-05-24  Jesper Skov  <jskov@redhat.com>

        * src/mipsfp.c: Also handle doubles in 32bit FPU mode.

2000-05-23  Jesper Skov  <jskov@redhat.com>

        * include/arch.inc: 
        * src/vectors.S:
        Made exception return safe.

2000-05-22  Jesper Skov  <jskov@redhat.com>

        * src/vectors.S: Call CTRLC init after stub initialization.

        * cdl/hal_mips.cdl: Only include CTRLC support if not prevented
        by platform.

        * include/hal_cache.h: When using 'cache' instruction, hit all
        ways, not only way0.

2000-05-18  Jesper Skov  <jskov@redhat.com>

        * include/hal_io.h: Allow platforms to override IO macro
        definitions.

2000-05-16  Jesper Skov  <jskov@redhat.com>

        * include/hal_intr.h:
        * src/vectors.S:
        Filter 'break 0x7' (GCC division-by-zero) exceptions out into a
        new vector.
        Fix typo.
        
2000-05-15  Jesper Skov  <jskov@redhat.com>

        * src/vectors.S: Allow warm-start to be treated like cold-start if
        platform requires it.

2000-05-11  Jesper Skov  <jskov@redhat.com>

        * include/mips-stub.h: Added register size for TX49.

2000-05-10  Jesper Skov  <jskov@redhat.com>

        * include/arch.inc: Force assembler into MIPS3 mode before using
        eret.

        * include/basetype.h: Fix comments.

2000-03-20  Jonathan Larmour  <jlarmour@redhat.co.uk>

        * include/mips-stub.h: Make C++ safe

        * include/hal_cache.h (_hal_asm_mips_cpp_stringize): Add as a separate
        macro because the compiler has got more picky

2000-03-16  Jonathan Larmour  <jlarmour@redhat.co.uk>

        * src/vectors.S (_start): Set return address to 0 and unconditionally
        jump to cyg_start, so that GDB doesn't get confused with backtraces

2000-03-13  Nick Garnett  <nickg@cygnus.co.uk>

        * src/context.S :
        Added jmpbuf_regsize to insulate jumb buffer from changes in
        mips_regsize. This will need extra work if we go to a full 64 bit
        variant, but for now is the simplest solution to this problem.

2000-02-25  Jonathan Larmour  <jlarmour@redhat.co.uk>

        * include/arch.inc: Add lpc and spc macros to save and restore PC
        * src/context.S (hal_thread_switch_context): Restore RA into PC
        location in context so that thread debugging works

2000-02-23  Jonathan Larmour  <jlarmour@redhat.co.uk>

        * src/hal_misc.c (hal_idle_thread_action):
        CYG_HAL_MIPS_SIM -> CYGPKG_HAL_MIPS_SIM
        CYG_HAL_MIPS_JMR3904 -> CYGPKG_HAL_MIPS_TX39_JMR3904

        * include/arch.inc: CYG_HAL_MIPS_SIM -> CYGPKG_HAL_MIPS_SIM

2000-02-16  Jesper Skov  <jskov@redhat.com>

        * cdl/hal_mips.cdl: removed fix me.

2000-01-14  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_arch.h: 
        * include/arch.inc: 
        * src/vectors.S: 
        * src/context.S: 
        Several fixes to allow the GPRs to be saved
        and restored as 64 bit values on some architectures. This is not
        full 64 bit support since it only covers the GPRs, HI and LO,
        there is more to be done in the CP0 registers (however it is a
        start).

1999-12-21  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/vectors.S (__default_exception_vsr): Rename
        CYG_HAL_USE_ROM_MONITOR_CYGMON -> CYGSEM_HAL_USE_ROM_MONITOR_CygMon
        Rename CYG_HAL_ROM_MONITOR -> CYGSEM_HAL_ROM_MONITOR

        * src/hal_misc.c (hal_default_isr): Rename
        CYG_HAL_USE_ROM_MONITOR_CYGMON ->
        CYGSEM_HAL_USE_ROM_MONITOR_CygMon

        * include/arch.inc: Rename CYG_HAL_USE_ROM_MONITOR ->
        CYGSEM_HAL_USE_ROM_MONITOR

1999-12-20  John Dallaway  <jld@cygnus.co.uk>

        * cdl/hal_mips.cdl:

        Fix syntax error.

1999-12-17  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/mipsfp.c (flt2reg): New inline function to convert between
        float union and register type
        (reg2flt): Likewise in reverse
        (cyg_hal_mips_process_fpe): Handle endianness correctly using the above
        functions. Avoid possible aliasing problems with the compiler. Ensure
        values are zeroed with the correct sign. Check for denormalized operands
        for all remaining FPU opcodes.

        * src/hal_misc.c (cyg_hal_exception_handler): Allow handling of
        unimplemented operation FPU exceptions to be configurable
        * include/pkgconf/hal_mips.h: Provide
        CYGSEM_HAL_MIPS_EMULATE_UNIMPLEMENTED_FPU_OPS to do this
        * cdl/hal_mips.cdl: Likewise

        All the above required for cases 102817 and 102820

1999-12-15  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * include/hal_intr.h (CYGNUM_HAL_EXCEPTION_COUNT): Ensure you can
        handle FPU exceptions if present
        Reported in case 102817

1999-12-02  John Dallaway  <jld@cygnus.co.uk>

        * cdl/hal_mips.cdl:

        Use the <PACKAGE> token in custom rules.

1999-12-01  John Dallaway  <jld@cygnus.co.uk>

        * cdl/hal_mips.cdl:

        Use the <PREFIX> token in custom rules.

1999-11-04  John Dallaway  <jld@cygnus.co.uk>

        * cdl/hal_mips.cdl:

        Output custom rule dependency information to .deps files in
        the current directory.

        Dispense with the need to create a 'src' sub-directory.

1999-11-04  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S: Added code in reset vector to reset the config0
        register to a known state. This is because on some MIPS variants
        the K0 field comes up in an undefined state.
        [Later] Moved this code to just work in the case of a cold boot.
        NMIs and warm boots should leave it as it was.

1999-11-02  Jesper Skov  <jskov@cygnus.co.uk>

        * cdl/hal_mips.cdl: Added.

1999-10-29  Nick Garnett  <nickg@cygnus.co.uk>

        * include/pkgconf/hal_mips.h: Added condition to set a
        MIPS-private option (CYGDBG_HAL_MIPS_DEBUG_GDB_CTRLC_SUPPORT) if
        either CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT or
        CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT are defined. In the MIPS HAL
        these are implmented with the same code.

        * src/hal_misc.c: Changed CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT to
        CYGDBG_HAL_MIPS_DEBUG_GDB_CTRLC_SUPPORT.

        * src/vectors.S: Space for old SP after switching to interrupt
        stack must be 8 bytes to preserve alignment of SP. Otherwise any
        nested interrupts or exceptions will get an address error
        exception if the FP regs are saved, which then recurses.
        Changed CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT to
        CYGDBG_HAL_MIPS_DEBUG_GDB_CTRLC_SUPPORT.
        
        * src/mips-stub.c (__is_breakpoint_function): Fixed comparison
        between PC register and label. On 64 bit CPUs these are both 32
        bit values in 64 bit types, but the way that they are generated,
        the PC is zero extended and the label is sign extended. This
        caused them to always differ. Fixed by casting label to unsigned
        long before widening.

1999-10-22  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S: Replaced ifdef with call to hal_intc_translate
        macro so the behaviour here may be customized by variant or
        platform HALs.

        * include/arch.inc: Added default implementations of
        hal_intc_translate macro.

1999-10-05  Nick Garnett  <nickg@cygnus.co.uk>

        * include/basetype.h: Made definition of CYG_BYTEORDER dependent
        on definition of CYGPKG_HAL_MIPS_[L|M]SBFIRST.

1999-09-17  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/vectors.S (__default_exception_vsr):
        Rename exception_handler()->cyg_hal_exception_handler()
        After all, we will just do a jump rather than a jal into
        cyg_hal_exception_handler()
        (restore_state): Make the change below (by Hugo) be conditional
        on CYG_HAL_USE_ROM_MONITOR_CYGMON.
        Add explanatory comment about the additions for Cygmon

        * src/hal_misc.c (hal_default_isr): Use new format HAL_DIAG_IRQ_CHECK()
        and check return code is negative; if so, return
        (cyg_hal_exception_handler): Rename from exception_handler()
        Now return cyg_uint32, but default to returning 0 always

1999-09-16  Hugo Tyson  <hmt@cygnus.co.uk>

        This set of changes with matching ones in jmr3904 comes from Mark
        Salter's work to make jmr3904 CygMon talk Ethernet.
        
        * src/vectors.S (restore_state): Call CygMon for exceptions or
        unhandled interrupts if CYG_HAL_USE_ROM_MONITOR.  This is why the
        return value from the ISR is preserved.  Don't fully understand
        this.

        * src/hal_misc.c (hal_default_isr): Call into hal_diag via
        HAL_DIAG_IRQ_CHECK if it's defined and CYG_HAL_USE_ROM_MONITOR.
        This lets CygMon check for network interrupts &c.

1999-09-09  Nick Garnett  <nickg@cygnus.co.uk>

        * include/arch.inc:
        Moved code to initialize cache out to variant header since it is
        variant specific.

1999-09-08  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/hal_misc.c (exception_handler): Catch exceptions that come from
        within GDB stubs and return if that's what the stubs intend

1999-08-19  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_io.h: Added include of plf_io.h.

1999-08-10  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/mipsfp.c (cyg_hal_mips_process_fpe): CYG_REPORT_FUNCNAMETYPE()
        must be first in a C file

1999-07-15  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * include/arch.inc (hal_fpu_save_caller): Save fcr31 first as
        recommended by user's manual
        (hal_fpu_load_caller): Similarly restore fcr31 last

        Rename CYG_HAL_MIPS_FSR_INIT to CYG_HAL_MIPS_FCSR_INIT since that's
        closer to its documented name

        * include/mips-regs.h: 
        Add floating point register definitions, and bitfields/masks for FCR31
        in particular

        * src/mips-stub.c (__single_step):
        Enable FP branch support if the hardware has an FPU.

        Change register access to FCR using HAL macro names from mips-regs.h

        When comparing branch tests with 0, cast the result of get_register()
        to int so that it works on 64-bit MIPS targets even in 32-bit mode,
        when GDB still insists REG_SIZE must be 8 (in which case negative
        results would otherwise go positive)
        
        * src/mipsfp.c: New file to emulate unimplemented MIPS FP operations
        * src/PKGconf.mak (COMPILE): compile it

        * src/hal_misc.c (exception_handler): If we have an FPU and get an FP
        exception, call cyg_hal_mips_process_fpe() from mipsfp.c to process
        it


1999-07-09  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * include/mips.inc:
        * include/arch.inc:
        * src/vectors.S:
        Rename "cache" register to "cachectrl" to prevent confusion with
        the "cache" instruction.
        For symmetry therefore also rename mipsreg_cache to mipsreg_cachectrl

        * include/arch.inc (hal_cache_init):
        Invalidate caches at startup

        * include/hal_cache.h:
        Allow cache invalidation when cache disabled
        Add _HAL_ASM_SET_MIPS_ISA() to allow use of cache macros in code
        compiled with a MIPS ISA below 3

1999-06-25  Nick Garnett  <nickg@cygnus.co.uk>

        * include/arch.inc:
        * include/hal_arch.h:
        Added initializer for FPU FSR register.

1999-06-22  Nick Garnett  <nickg@cygnus.co.uk>

        * src/hal_misc.c (hal_default_isr): When chaining, always try the
        ctrlc ISR, the passed-in vector number can be bogus.

1999-06-18  Nick Garnett  <nickg@cygnus.co.uk>

        * src/hal_misc.c:
        Added cyg_hal_clock_period variable.    
        
        * include/hal_intr.h:
        Modified HAL_CLOCK_LATENCY() macro to do the right thing.
        Added cyg_hal_clock_period variable.    

        * include/hal_cache.h: Modified implementations of cache macros to
        only do anything if the appropriate cache is enabled.

1999-06-17  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S: Added code to discriminate different entry
        conditions to the reset vector. Added code to translate an NMI
        into a standard exception and added a new vector in the VSR table
        for it.
        Made above code not be present in RAM. Tidied away some debug
        code.

1999-06-11  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/hal_misc.c: Make sure all symbol addresses are given an
        appropriate type that they won't be relocated relative to $gp
        Fix for CR 100800
        
1999-06-10  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_arch.h: Added macros to copy FPU registers between
        HAL and GDB register save states.

1999-06-08  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S: Dummy __gccmain did not have a delay slot after
        the "jr ra".

        * include/hal_arch.h: Make value of CYGNUM_HAL_STACK_SIZE_TYPICAL
        always be greater than CYGNUM_HAL_STACK_SIZE_MINIMUM.

1999-06-02  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/hal_misc.c (cyg_hal_invoke_constructors): 
        Rework for new constructor scheme for new compilers. Should work
        with old compilers too.

1999-05-28  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S:
        Removed references to CYG_HAL_STARTUP_STUBS.
        Removed some defunct code.

        * include/hal_cache.h (HAL_ICACHE_INVALIDATE_ALL): Fixed typo.

1999-05-27  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S:
        Move call to hal_diag_intr_start to a more useful place.
        Added a save of the current state pointer to memory for ctrl-c
        support. Ensure that exceptions are enabled before calling the ISR
        to allow breakpoints to function.

        * src/mips-stub.c: Imported asynchronous interrupt support from
        libstub/cygmon.

        * include/hal_intr.h: Added HAL_DEFAULT_ISR to contain the name of
        the default ISR.

        * src/hal_misc.c: Added code to call HAL_CTRLC_ISR to default ISR
        if it is enabled. Added some (disabled) debug code.

        * include/hal_cache.h: Added default implementation of
        HAL_DCACHE_IS_ENABLED(). Made use of it in some cache macros.
        Also fixed some typos in some macros.

1999-05-21  Hugo Tyson  <hmt@cygnus.co.uk>

        * include/hal_intr.h: Define HAL_INTERRUPT_STACK_BASE and
        HAL_INTERRUPT_STACK_TOP so that stack usage macros in
        kernel/.../stackmon.hxx can work.

        * src/vectors.S (cyg_interrupt_stack_base): Define this symbol for
        the interrupt stack and its friend for the stack top so that we
        can publish them with nice names.

1999-05-21  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S: 
        Rationalized use of "at" and "noat" setting.
        Made use of "lar" where necessary.
        
        * src/mips-stub.c (__install_breakpoints): Added cache flushes to
        ensure that the just-set breakpoint is migrated to main memory and
        will be fetched by the instruction cache.

        * src/context.S:
        Rationalized use of "at" and "noat" setting.

        * include/arch.inc:
        Added initial value for the config0 register and added code to set
        it to hal_cpu_init.
        Added default "lar" macro.

1999-05-16  Gary Thomas  <gthomas@cygnus.co.uk>

        * include/hal_intr.h (HAL_INTERRUPT_STACK_CALL_PENDING_DSRS): 
        Add macro for new DSR handling mechanism (was override of a
        "weak" symbol in kernel).       

1999-05-13  Nick Garnett  <nickg@cygnus.co.uk>
        The following have been merged from a branch:
        
    1999-05-11  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_arch.h: 
        * include/hal_intr.h: 
        * include/hal_cache.h: 
        * include/arch.inc:
        Changed references to "imp" and "implementation" to "var" and
        "variant" respectively. These are better names for these files and
        functions.

        * src/vectors.S: 
        Removed or disabled some development/debug code.
        Same imp->var changes as above.
        
    1999-05-06  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S: Added call to hal_cpu_except_enable in
        __default_exception_vsr to re-enable nested exceptions.

        * src/mips-stub.c: Use _registers[X] rather that register[X] for
        accessing CPU registers, since the former may point to per-thread
        register sets while the latter only refers to the current trap
        register set.

        * include/arch.inc: Added hal_cpu_except_enable macro to
        (re-)enable exception processing and disable interrupts. This is
        necessary if we are to allow nested exceptions (like breakpoints
        in exception handlers).

    1999-04-29  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S: Reenable interrupts while processing exceptions.
        Several temporary kludges to permit us to test ROM code from RAM
        under PMON.

        * include/mips.inc: Extended list of CP0 register aliases.

        * include/mips-stub.h: The stubs must behave as if we are on a 64
        bit processor when debugging the VR4300, since that is what GDB
        expects.
        
        * include/arch.inc: Added generic version of hal_cache_init to
        disable kseg0 caching in config0 register.

        * include/hal_cache.h: Moved dummy addresses used in index
        operations to 0x80000000, zero caused MMU exceptions.
        Fixed looping bugs in all macros that use them.

    1999-04-28  Gary Thomas  <gthomas@cygnus.co.uk>

        [v1_2_2_beta branch]
        * src/vectors.S: Add dummy "__gccmain()"

    1999-04-27  Gary Thomas  <gthomas@cygnus.co.uk>

        * include/hal_arch.h: Make minimum stack sizes more realistic.
        Also fix size of interrupt stack frame when FPU present.

    1999-04-23  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S: Added support for floating point register save
        and restore. Fixed hal_interrupt_stack_call_pending_DSRs to use
        hal_cpu_int_merge macro.

        * src/context.S: Added support for floating point register save
        and restore. Started some preparations for 64 bit processor
        support.

        * include/mips.inc: Added floating point register aliases. Moved
        saved state to arch.inc.

        * include/hal_arch.h: Completed support for floating point state
        save and restore. Parameterized GDB support macros a little to
        enable GDB to work properly.

        * include/arch.inc: Added support for floating point state save
        and restore. Moved assembler version of saved state layout here
        from mips.inc.

    1999-04-22  Nick Garnett  <nickg@cygnus.co.uk>

        * src/context.S (hal_thread_load_context): Substituted explicit
        code to reload the interrupt enable state with a macro.

        * include/hal_cache.h: Removed default implementations of
        HAL_[D/I]CACHE_[EN/DIS]ABLE since these were actually TX39
        specific. There is aparrently no standard way of implementing
        these function in the MIPS architecture.

        * include/mips.inc: Added a comment to point out a TX39-only
        register.
        
        * src/vectors.S: Modified hal_interrupt_stack_call_pending_DSRs()
        to also call DSRs with interrupts enabled. Returns interrupt state
        to original value when finished.
        Use hal_cpu_int_ensable macro in place of explicit code in
        hal_interrupt_stack_call_pending_DSRs().

    1999-04-21  Nick Garnett  <nickg@cygnus.co.uk>

        * include/arch.inc: Ifdeffed definition of hal_intc_init macro to
        allow it to be defined elsewhere. Added default versions of diag
        macros.

        * src/vectors.S: Added some low-level diagnostic macros to show
        HAL events if there is adequate hardware (such as leds).
        Removed interrupt enable/disables in interrupt processing since we
        can now go through a thread switch with interrupts disabled.
        Ifdeffed ISR tables so they can be defined elsewhere.
        Added implementation of hal_interrupt_stack_call_pending_DSRs.
        Added calls to implementation and platform init routines.
        
        * src/hal_misc.c: Many changes to hal_idle_thread_action() to
        print or instrument various CPU registers. Left with code to
        wiggle an led in the idle loop.
        Stripped out TX39 specific code and moved it to plf_misc.c.
        
        * src/context.S: Added code to save and restore the interrupt mask
        state in thread contexts.

        * include/hal_intr.h:
        Renamed default interrupts to match the hardware more closely.
        Added ifdef around HAL_TRANSLATE_VECTOR() so it can be made
        platform/variant specific. Added implementation of
        HAL_INTERRUPT_ACKNOWLEDGE().

        * include/hal_arch.h (HAL_THREAD_INIT_CONTEXT): Aligned the
        intitial stack pointer to 16 byte boundary, added an initial value
        for the status register.

        * include/arch.inc: Added some nops to eret macros.

    1999-04-13  John Dallaway  <jld@cygnus.co.uk>

        * src/mips.ld: Migrate global MIPS linker script to individual
        MIPS variant directories

1999-04-30  Hugo Tyson  <hmt@cygnus.co.uk>

        Merge the following changes from the 1.2.1 release branch,
        but without any CDL for CYGDBG_HAL_MIPS_INSTALL_CTRL_C_ISR,
        it is always on.

    1999-04-30  Jesper Skov  <jskov@cygnus.co.uk>
        * src/hal_misc.c: Added vector decoding to the below.
    1999-04-30  Hugo Tyson  <hmt@masala.cygnus.co.uk>
        * src/hal_misc.c (hal_init_ctrlc_intr): Chain onto the old value
        of the ISR when attaching the ctrl-c ISR; this allows chained
        interrupts to work (otherwise a stack-wrecking interrupt loop
        occurs).
    1999-04-29  Hugo Tyson  <hmt@cygnus.co.uk>
        * include/pkgconf/hal_tx39.h (CYGDBG_HAL_MIPS_INSTALL_CTRL_C_ISR): 
        New config option, on by default.
        * src/hal_misc.c (hal_ctrlc_isr): Enable these features on
        CYGDBG_HAL_MIPS_INSTALL_CTRL_C_ISR new config option.

1999-04-28  Bart Veer  <bartv@cygnus.co.uk>

        * src/PKGconf.mak:
        Remove the -n argument to tail, it does not appear to be required
        on any supported host and causes problems with some
        implementations of tail.

1999-04-20  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * include/hal_intr.h: Don't sync TRR if platform sim - it doesn't need
        it

        * include/pkgconf/hal_tx39.h: 
        Allow CYGARC_TX39_PR19846 to override
        CYGHWR_HAL_MIPS_TX3904_TRR_REQUIRES_SYNC so that we can do something
        sensible in the simulators
        
        Related to PR 19846

1999-04-15  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/tx39.ld: Define __bss_end at the end of the BSS
        * src/hal_misc.c (hal_zero_bss): Stop at __bss_end rather than _end
        when clearing BSS
        These fix PR 19750

1999-04-15  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/hal_misc.c:
        * src/vectors.S:
        Separate parts of cyg_hal_invoke_constructors() out into new functions
        cyg_hal_enable_caches() and cyg_hal_debug_init() so that
        cyg_hal_invoke_constructors() can be called again safely if
        necessary
        Related fix to that of PR19642

1999-04-14  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/PKGconf.mak (EXTRAS): Don't generate extras.o here any more
        But do define EXTRAS every time for the linker script

1999-04-13  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * include/hal_intr.h (HAL_CLOCK_READ): 
        Add workaround for tx39 bug - needs to sync and wait for the
        write buffer to clear before reading the clock.
        Submitted by akira.yokosawa@toshiba.co.jp

        * include/pkgconf/hal_tx39.h
        (CYGHWR_HAL_MIPS_TX3904_TRR_REQUIRES_SYNC): Define this by default
        to implement above

1999-04-12  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * include/hal_intr.h (HAL_VSR_SET_TO_ECOS_HANDLER): Added.
        (HAL_VSR_SET): Cast types to CYG_ADDRESS to prevent warnings

        Part of fix for PRs 19731/19607

1999-04-09  Jesper Skov  <jskov@cygnus.co.uk>

        * src/mips-stub.c: 
        Moved get_register and put_register to hal_stub.c.

1999-04-08  John Dallaway  <jld@cygnus.co.uk>

        * src/*.ld: Use double underscore substitution for period
        character in SECTION_* macro names (PR 19787)

1999-04-08  John Dallaway  <jld@cygnus.co.uk>

        * src/*.ld: Revised SECTION_* macro arguments to
        avoid padded output sections (PR 19787)

1999-03-31  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_cache.h: Added include of hal.h and a test that a
        valid set of macros have been added.
        Also moved address used in HAL_DCACHE_INVALIDATE_ALL() to
        0x9fc00000, which is the cached ROM space.

1999-03-24  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S:
        Added options to allow different settings for DRAM initialization.
        Fixed some ifdef bugs. 

        * src/hal_misc.c (cyg_hal_invoke_constructors):
        Added ifdefs to control enabling and disabling of timeout
        exceptions.

        * include/pkgconf/hal_tx39.h:
        Added translations from the user friendly CPU speed settings into
        the real CPU frequencies in Hz.

        * include/hal_intr.h:
        Added HAL_TX39_DEBUG_TOE_ENABLE() and ...DISABLE, to switch
        timeout exceptions on and off.

1999-03-23  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_arch.h:
        Modified stack size definitions to be more accurate.

1999-03-22  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * include/mips-regs.h: Update copyright

        * include/mips-stub.h: Update copyright

        * src/mips-stub.c: Update copyright

1999-03-22  Hugo Tyson  <hmt@cygnus.co.uk>

        * include/hal_arch.h: 
        Use CYGNUM_HAL_STACK_SIZE_TYPICAL for the stack size instead of
        CYGNUM_HAL_MINIMUM_STACK_SIZE.

1999-03-17  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/hal_misc.c (cyg_hal_user_break): Remove #warning - it doesn't
        really provide any useful info, and may unnecessarily worry a user
        since it fires in normal situations

1999-03-17  John Dallaway  <jld@cygnus.co.uk>

        * src/PKGconf.mak: Remove dependence on echo '-e' switch.

1999-03-16  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S: Removed definition of idle thread stack. 

1999-03-15  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_cache.h:
        Changed implementation of HAL_DCACHE_INVALIDATE_ALL() to read from
        ROM space rather than RAM. This fixes PR 19510.

1999-03-12  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S: Modified ROMC and SCS settings in line with
        Toshiba's suggestions for compatibility with other CPU variants.

1999-03-12  Gary Thomas  <gthomas@cygnus.co.uk>

        * include/hal_arch.h: Add definition for 'CYGNUM_HAL_MINIMUM_STACK_SIZE'

1999-03-11  Nick Garnett  <nickg@cygnus.co.uk>

        * src/hal_misc.c:
        Disabled use of stand-alone ^C detection interrupt. This is now
        done in the serial driver. Added cyg_hal_is_break() and
        cyg_hal_user_break() to detect and provoke ^C processing. These
        are used by the serial driver and will one day interact with the
        BSP/Cygmon/GDB stubs to do the right thing.

1999-03-10  Jesper Skov  <jskov@cygnus.co.uk>

        * include/hal_intr.h (HAL_INTERRUPT_IN_USE): Added.

1999-03-10  Nick Garnett  <nickg@cygnus.co.uk>

        * include/pkgconf/hal_tx39.h: 
        * src/vectors.S:
        Changed names used to control CPU frequency into something more
        generic. Moved definition into hal_tx39.h from hal_tx39_jmr3904.h.

1999-03-09  Jesper Skov  <jskov@cygnus.co.uk>
        PR 19370
        * src/hal_misc.c (cyg_hal_invoke_constructors): Changed
        constructor loop.

1999-03-05  Gary Thomas  <gthomas@cygnus.co.uk>

        * src/tx39.ld: 
        * src/PKGconf.mak: Clean up I/O package changes.

1999-03-04  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/tx39.ld: 
        Add INPUT(libextras.a), include libextras.a in GROUP() and include 
        new __DEVTAB__ section for new device drivers

1999-02-25  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S:
        Changed label used to access scheduler lock to one that is not
        mangled by C++. This is intended to make support for interrupt
        handling in non-kernel configurations easier.
        Added some code to initialize DRAM in ROM-only configurations.

1999-02-23  Nick Garnett  <nickg@cygnus.co.uk>

        * src/hal_misc.c: 
        Added support for SIGINT-causing magic breakpoint. This involves
        passing a third, hidden argument to hal_ctrlc_isr() which is a
        pointer to the saved CPU state.
        
        * src/vectors.S:
        Added support for 66MHz part (untested).
        Added support for SIGINT-causing magic breakpoint to allow
        continuation after ^C. This also relies on CYGMON changes.

1999-02-20  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * include/hal_arch.h: 
        Rename deliver_exception() -> cyg_hal_deliver_exception()
        QA improvements

        * include/hal_intr.h:
        Reorganise vector/interrupt/exception names according to purpose
        QA improvements

        * src/hal_misc.c:
        Rename deliver_exception() -> cyg_hal_deliver_exception()
        Rename CYG_VECTOR_SIO_0 -> CYGNUM_HAL_INTERRUPT_SIO_0

1999-02-16  Jesper Skov  <jskov@cygnus.co.uk>

        * src/vectors.S: Added call to initialize_stub.

        * src/mips-stub.c: 
        * include/mips-stub.h:
        Cleaned up to only include arch specific stub code.

        * include/hal_arch.h (HAL_BREAKPOINT): Added SIM breakpoint code
        from (now dead) jmr3904/.../hal_stub.c.

1999-02-05  John Dallaway  <jld@cygnus.co.uk>

        * src/mips.ld: Rename to tx39.ld since this is the target name
        * src/PKGconf.mak: Process tx39.ld instead of mips.ld

1999-02-05  John Dallaway  <jld@cygnus.co.uk>

        * src/mips.ld: Add LMA_EQ_VMA macro definition.

1999-02-03  Jesper Skov  <jskov@cygnus.co.uk>

        * src/hal_misc.c: 
        * include/hal_cache.h:
        Moved nested external declarations into top-level scope to avoid
        compiler warnings.

1999-02-02  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_cache.h :
        In HAL_ICACHE_INVALIDATE_ALL() and HAL_ICACHE_INVALIDATE(), fixed
        typos in passing arguments to asm sections.
        Fixes PR 18951.

1999-01-26  Hugo Tyson  <hmt@masala.cygnus.co.uk>

        * src/mips.ld:
        Add copyright notice.  (Though these files will later be generated
        by a tool and so not copyright, these default setups are.)

1999-01-21  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/hal_misc.c (cyg_hal_invoke_constructors): 
        Add code to deal with CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
        Tidy up and update description header
        Shorten needlessly long lines
        Remove all traces of non-CYG_KERNEL_USE_INIT_PRIORITY code

1999-01-15  Hugo Tyson  <hmt@cygnus.co.uk>

        * src/mips.ld:
        Provide alternate definition of macro SECTION_rom_vectors() for
        RAM startup (CYG_HAL_STARTUP_RAM) so that minimal sim testing
        works.  Note: this is an instance where two definitions (of
        identical "API") of a macro occur in the prototype <target>.ld
        file; the MLT is required not to be confused by this.

1999-01-15  John Dallaway  <jld@cygnus.co.uk>

      * src/mips.ld: add section macro for .vsr_table

1999-01-13  John Dallaway  <jld@cygnus.co.uk>

      * src/mips.ld: add section macro for .rel.dyn

1999-01-13  John Dallaway  <jld@cygnus.co.uk>

      * src/mips.ld: new linker script for MLT
      * src/PKGconf.mak: add mips.ld rules for MLT

1999-01-13  Gary Thomas  <gthomas@cygnus.co.uk>

        * include/basetype.h: CYG_DOUBLE_BYTEORDER now in <infra/cyg_type.h>

1999-01-12  Gary Thomas  <gthomas@cygnus.co.uk>

        * include/basetype.h (CYG_DOUBLE_BYTEORDER): Define ordering
        for words within doubles.

1999-01-12  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_cache.h: 
        Modified HAL_DCACHE_INVALIDATE_ALL() to correctly touch all cache
        lines twice to ensure that the cache and memory are
        consistent. This is the best we can do without direct support for
        invalidation.
        
        * src/hal_misc.c: Altered call to patch_dbg_syscalls() to pass
        pointer to base of vector rather than a single vector entry.

1998-12-15  Jesper Skov  <jskov@cygnus.co.uk>
        PR 18543

        * include/hal_cache.h (HAL_DCACHE_INVALIDATE): Fixed variable
        name.

1998-12-15  Jesper Skov  <jskov@cygnus.co.uk>

        * include/hal_arch.h: 
        * src/context.S (hal_setjmp, hal_longjump):
        Added CYGARC definitions for jmpbuf entries.
        Corrected jmpbuf size.

1998-12-10  Jesper Skov  <jskov@cygnus.co.uk>

        * include/hal_cache.h (HAL_DCACHE_UNLOCK_ALL,
        HAL_ICACHE_UNLOCK_ALL): Added.

1998-11-26  Jesper Skov  <jskov@cygnus.co.uk>

        * include/mips-regs.h:
        * src/mips-stub.c:
        Added use of CYGARC_HAL_COMMON_EXPORT_CPU_MACROS.

1998-11-18  Gary Thomas  <gthomas@cygnus.co.uk>

        * include/hal_intr.h: Add support for interrupt latency
        measurements, controlled by CYGVAR_KERNEL_COUNTERS_CLOCK_LATENCY.

1998-10-27  Jesper Skov  <jskov@cygnus.co.uk>
        PR 18033

        * include/hal_intr.h: Replaced CYGIMP_HAL_INTERRUPTS_CHAIN
        with the correct CYGIMP_HAL_COMMON_INTERRUPTS_CHAIN.

1998-10-27  Jesper Skov  <jskov@cygnus.co.uk>
        PR 18021
        * src/hal_misc.c (hal_ctrlc_isr): Removed break; to prevent
        compiler error.

1998-10-25  Jesper Skov  <jskov@cygnus.co.uk>

        * src/mips-stub.c (__build_t_packet): Replaced
        CYGDBG_KERNEL_DEBUG_GDB_THREAD_SUPPORT with
        CYGDBG_HAL_DEBUG_GDB_THREAD_SUPPORT. 
        Fixed #endif comment.

        * src/hal_misc.c (hal_ctrlc_isr): Replaced
        CYGDBG_KERNEL_DEBUG_GDB_INCLUDE_STUBS with
        CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS.

        * include/hal_intr.h: Replaced CYGIMP_KERNEL_INTERRUPTS_CHAIN with
        CYGIMP_HAL_INTERRUPTS_CHAIN.

1998-10-23  Jesper Skov  <jskov@cygnus.co.uk>

        * include/hal_intr.h: Include pkgconf/hal.h.

1998-10-16  Bart Veer  <bartv@cygnus.co.uk>

        * src/vectors.S (__interrupt_stack):
        Made the interrupt stack size configurable.

1998-10-16  Nick Garnett  <nickg@cygnus.co.uk>

        * src/hal_misc.c:
        Enabled caches by default.

1998-10-14  Nick Garnett  <nickg@cygnus.co.uk>

        * src/context.S (hal_thread_switch_context):
        Store copy of R31(RA) in PC slot in register state to keep GDB
        happy.
        * include/hal_arch.h (HAL_THREAD_INIT_CONTEXT):
        Intialize PC slot in register state.

        * src/hal_misc.c:
        Altered ifdefs to allow building without kernel present.

        * include/mips-stub.h:
        Include generic-stub.h from HAL rather than from kernel.

        * src/mips-stub.c:
        Added signal definitions to avoid including signal.h.

        * include/hal_intr.h:
        Added implementations of HAL_INTERRUPT_ACKNOWLEDGE() and
        HAL_INTERRUPT_SET_LEVEL().

1998-10-13  Jesper Skov  <jskov@cygnus.co.uk>

        * src/hal_misc.c: Use GDB array rather than HAL_SavedRegisters
        structure. Rely on generic stub to pack/unpack the array.

        * include/hal_arch.h (HAL_GET_GDB_REGISTERS,
        HAL_SET_GDB_REGISTERS): get/set full register set.

1998-10-13  Jesper Skov  <jskov@cygnus.co.uk>

        * include/mips-stub.h: Moved first use of regnames below
        definition.

Sun Sep 27 12:17:42 1998  Jesper Skov  <jskov@cygnus.co.uk>

        * include/hal_cache.h (HAL_DCACHE_LOCK): Terminate asm string.

1998-09-26  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_cache.h:
        Cleaned up some compilation errors.

Tue Sep 15 19:13:43 1998  David Moore  <dsm@keema.cygnus.co.uk>

        * src/vectors.S: Cleaned up comments.

1998-09-15  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_arch.h (HAL_GET_GDB_REGISTERS):
        Initialized R30 to a copy of SP to avoid GDB making bogus memory
        references.

        * src/hal_misc.c:
        Added support for Ctrl-C processing when running under Cygmon.
        Fixed a compiler warning.

1998-09-14  Bart Veer  <bartv@cygnus.co.uk>

        * src/PKGconf.mak:
        Made vectors.o dependent on the various files that can contain
        makefile variables or rules. This is needed after changes to
        pkgconf.tcl for PRs 17195 and 17286.

Mon Sep 14 11:10:20 1998  Jesper Skov  <jskov@lassi.cygnus.co.uk>
        PR 17230
        
        * src/vectors.S: Replaced CYGIMP_KERNEL_INTERRUPTS_CHAIN with new
        CYGIMP_HAL_COMMON_INTERRUPTS_CHAIN.

1998-09-14  Nick Garnett  <nickg@cygnus.co.uk>
        PR 17230

        * include/hal_intr.h:
        Added HAL_TRANSLATE_VECTOR() to translate a supplied vector number
        into one that can be used in the HAL. Added calls to it in
        HAL_INTERRUPT_ATTACH() and HAL_INTERRUPT_DETACH().

1998-09-12  Bart Veer  <bartv@cygnus.co.uk>

        * include/pkgconf/hal_tx39.h:
        Added missing descriptions (PR 17184)

        * src/vectors.S:
        <pkgconf/kernel.h> was being included without properly checking
        that the kernel package was enabled.

        * src/hal_misc.c (exception_handler): 
        Sort out exception handling options (PR 16953)

1998-09-11  Nick Garnett  <nickg@cygnus.co.uk>
        PR 17230
        
        * src/vectors.S (__default_interrupt_vsr):
        Modified interrupt decode code to preserve raising interrupt
        number to pass to ISR, even when using chained interrupts.

1998-09-03  Bart Veer  <bartv@cygnus.co.uk>

        * src/mips-stub.c:
        Fixed type in config option name.

1998-09-02  Bart Veer  <bartv@cygnus.co.uk>

        * include/pkgconf/hal_tx39.h: 
        New header file for architecture-specific configuration options
        
        * tests/PKGconf.mak: 
        * src/PKGconf.mak: 
        Sort out package naming conventions.
        
Tue Sep  1 19:26:45 1998  Hugo Tyson  <hmt@cygnus.co.uk>

        * src/hal_misc.c: 
        Use CYGDBG_INFRA_DIAG_USE_DEVICE (from infra.h) instead of
        CYG_DIAG_USE_DEVICE (badly named, from kernel.h).

1998-09-01  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_intr.h:
        Added CYG_EXCEPTION_COUNT.

1998-08-28  Bart Veer  <bartv@cygnus.co.uk>

        * src/vectors.S, src/context.S, src/hal_misc.c, src/mips-stub.c:
        Updated for new kernel configuration option symbol names

Fri Aug 28 10:01:24 1998  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * src/hal_misc.c:
        Rename __main() to cyg_hal_invoke_constructors() to prevent the
        implied link with things called, or related to main(). Remove static
        initialised variable as we can now guarantee it is only called
        once.

        * src/vectors.S:
        Instead of calling main(), call cyg_start() which lives in the infra
        package.
        Explicitly invoke constructors as it isn't done magically for us
        any more, now that main() is no longer used.
        

1998-08-25  Nick Garnett  <nickg@cygnus.co.uk>

        * src/vectors.S:
        Now pass pointer to saved registers as third argument to
        interrupt_end().

        * include/hal_arch.h:
        Added macros to support GDB.

Tue Aug 25 02:33:59 1998  Jonathan Larmour  <jlarmour@cygnus.co.uk>

        * include/mips_stub.h, src/hal_misc.c: 
        Add void to prototypes and typedefs that want it to silence warnings

1998-08-21  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_cache.h:
        Now includes cyg_type.h rather than ktypes.h.   

1998-08-18  Nick Garnett  <nickg@cygnus.co.uk>

        * src/context.S: 
        * include/hal_arch.h: 
        * include/hal_io.h: 
        * include/hal_intr.h:
        Now uses cyg_type.h rather than ktypes.h.

        * src/hal_misc.c: 
        * src/vectors.S:
        Now uses hal.h rather than kernel.h.

1998-07-23  Nick Garnett  <nickg@cygnus.co.uk>

        * include/hal_intr.h: Fixed some issues raised bt code review.

        * src/context.S: 
        * include/hal_arch.h: Fixed some typos raised by code review.

        * include/hal_intr.h (HAL_INTERRUPT_MASK): 
        * src/vectors.S (hal_interrupt_level): Added hal_interrupt_level
        to allow for interaction between HAL_INTERRUPT_UNMASK() and
        HAL_INTERRUPT_SET_LEVEL().
        

//===========================================================================
// ####GPLCOPYRIGHTBEGIN####                                                
// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// This program is free software; you can redistribute it and/or modify     
// it under the terms of the GNU General Public License as published by     
// the Free Software Foundation; either version 2 or (at your option) any   
// later version.                                                           
//
// This program is distributed in the hope that it will be useful, but      
// WITHOUT ANY WARRANTY; without even the implied warranty of               
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU        
// General Public License for more details.                                 
//
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// along with this program; if not, write to the                            
// Free Software Foundation, Inc., 51 Franklin Street,                      
// Fifth Floor, Boston, MA  02110-1301, USA.                                
// -------------------------------------------                              
// ####GPLCOPYRIGHTEND####                                                  
//===========================================================================