changelog

ecos为实时嵌入式操作系统

1999-04-19  Jesper Skov  <[e-mail]>
        PR 19861
	* src/vectors.S (_start): Rewrote the hal_zero_bss code in
	assembly. When compiling with -O0 the C function accesses the
	previous stack frame upon return, causing a crash.

1999-04-15  Jonathan Larmour  <[e-mail]>

	* src/powerpc.ld: Define __bss_start/__bss_end around the BSS, and
	__sbss_start/__sbss_end around the SBSS
	* src/vectors.S (_start): Call C function to clear BSS.
	* src/hal_misc.c (hal_zero_bss): Use __bss_end rather than _end when
	clearing BSS. Clear SBSS similarly but separately since the MLT
	may have them in non-contiguous parts of memory.
	
	These fix PR 19750

1999-04-14  Jesper Skov  <[e-mail]>

	* include/hal_cache.h: Added HAL_xCACHE_IS_ENABLED macros.

1999-04-14  Jonathan Larmour  <[e-mail]>

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

1999-04-09  Jesper Skov  <[e-mail]>

	* src/ppc_stub.c:
	Moved get_register and put_register to hal_stub.c.

1999-04-08  John Dallaway  <[e-mail]>

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

1999-04-07  Gary Thomas  <[e-mail]>

	* include/hal_arch.h (CYGNUM_HAL_STACK_SIZE_xxx): Increase to more
	realistic values.  PR 19748.

1999-03-31  Jesper Skov  <[e-mail]>
        PR 19741
	* src/vectors.S:
	* src/ppc_stub.c (__computeSignal): 
	Added some comments about the use of MSR/SRR1. Masked out reserved
	bits of MSR before restoring it.
	
1999-03-23  Jesper Skov  <[e-mail]>

	* include/hal_arch.h: Added stack values.

1999-03-22  Jonathan Larmour  <[e-mail]>

	* include/ppc_stub.h: Update copyright

	* src/ppc_stub.c: Update copyright

1999-03-22  Hugo Tyson  <[e-mail]>

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

1999-03-22  Jesper Skov  <[e-mail]>

	* tests/intr0.c: 
	* include/ppc.inc: 
	* include/hal_arch.h:
	Cleaned up some FIX MEs.

1999-03-18  Jesper Skov  <[e-mail]>

	* include/ppc.inc: Removed exception safety margin.

1999-03-17  John Dallaway  <[e-mail]>

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

1999-03-16  Jesper Skov  <[e-mail]>

	* src/hal_misc.c: Moved extern declarations out of function body
	to avoid compiler warnings.

1999-03-12  Jesper Skov  <[e-mail]>

	* include/hal_arch.h (CYGNUM_HAL_MINIMUM_STACK_SIZE): Increased to
	2kB for safety.

	* include/ppc.inc: Reduced exception stack frame safety gap
	to 64 bytes.

1999-03-12  Gary Thomas  <[e-mail]>

	* include/hal_arch.h (CYGNUM_HAL_MINIMUM_STACK_SIZE): 
	Added HAL stack size definition.

1999-03-10  Jesper Skov  <[e-mail]>

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

1999-03-08  Nick Garnett  <[e-mail]>

	* src/powerpc.ld:
	Added alignment before definition of __DEVTAB__.	

1999-03-08  Jesper Skov  <[e-mail]>

	* include/hal_intr.h: Removed workaround.

1999-03-05  Jesper Skov  <[e-mail]>

	* include/hal_intr.h (cyg_hal_interrupt_set_level): Disable this
	function as a temporary workaround to PR 19400.

1999-03-05  Gary Thomas  <[e-mail]>

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

1999-03-04  Jonathan Larmour  <[e-mail]>

	* src/powerpc.ld:
	Add INPUT(libextras.a), add libextras.a to GROUP() and include
	new section for device driver table

1999-02-26  Jesper Skov  <[e-mail]>

	* include/hal_intr.h: Removed FIX ME.

1999-02-26  Jesper Skov  <[e-mail]>

	* include/hal_intr.h:
	* src/ppc_stub.c (__computeSignal): 
	Renamed CYGNUM_HAL_HWVECTOR_DECREMENTER to
	CYGNUM_HAL_VECTOR_DECREMENTER.

1999-02-25  Nick Garnett  <[e-mail]>

	* 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.

1999-02-23  Jesper Skov  <[e-mail]>

	* src/ppc_stub.c (__computeSignal): Renamed
	CYGNUM_HAL_VECTOR_DECREMENTER to CYGNUM_HAL_HWVECTOR_DECREMENTER.

1999-02-20  Jonathan Larmour  <[e-mail]>

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

	* include/hal_intr.h:
	Reorganise vector/interrupt/exception names according to purpose
	Add decoded exception vectors (decoded from PROGRAM exception)
	QA improvements

	* include/ppc_regs.h:
	Add defines for access to SRR0 and SRR1 registers

	* src/hal_intr.c:
	Rename CYG_VECTOR_* according to hal_intr.h changes above
	QA improvements

	* src/hal_misc.c:
	Decode PROGRAM vector using SSR1 register
	QA improvements

	* src/ppc_stub.c:
	Rename CYG_VECTOR_* according to hal_intr.h changes above

	* src/quicc_smc.c:
	Add a FIX ME

	* src/vectors.S:
	Rename exception_handler -> cyg_hal_exception_handler

	* tests/intr0.c:
	Rename CYG_VECTOR_* -> CYGNUM_HAL_INTERRUPT_* due to hal_intr.h
	changes above

1999-02-17  Jesper Skov  <[e-mail]>

	* src/ppc_stub.c (__computeSignal): Moved special GDB signal
	handling to generic-stub.c.

1999-02-17  Jesper Skov  <[e-mail]>

	* src/hal_misc.c (hal_default_isr): Always print out vector number
	in hal_default_interrupt.

1999-02-16  Jesper Skov  <[e-mail]>

	* src/vectors.S: Changed set_debug_traps to initialize_stub.

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

1999-02-05  Jesper Skov  <[e-mail]>

	* src/ppc_stub.c: 
	* src/hal_misc.c: 
	* src/hal_intr.c: 
	* src/vectors.S: 
	* include/ppc_regs.h: 
	* include/hal_intr.h: 
	* include/hal_cache.h: 
        Cleaned up the MPC823/850 code.

1999-02-05  Jesper Skov  <[e-mail]>

	* include/hal_intr.h (HAL_CLOCK_LATENCY): Return 0 when the result
	is due to a bogus timer interrupt.

1999-02-05  John Dallaway  <[e-mail]>

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

1999-01-29  Jesper Skov  <[e-mail]>

	* src/hal_misc.c: 
	* src/ppc_stub.c: 
	* src/vectors.S: 
	* include/ppc_regs.h: 
	* include/hal_intr.h: 
	* include/hal_cache.h:
	Added MPC823/850 support. Some of it needs cleaning up a bit.

1999-01-22  Jesper Skov  <[e-mail]>
        PR 18879
	* include/quicc_smc.h:
	* src/quicc_smc.c:
	Fix compiler warnings.

1999-01-22  Jesper Skov  <[e-mail]>

	* include/quicc_smc.h:
	* src/ppc_860.h:
	* src/quicc_smc.c:
	Added UNSUPPORTED headers.

1999-01-21  Jonathan Larmour  <[e-mail]>

	* 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

	* src/vectors.S:
	Remove all traces of non-CYG_KERNEL_USE_INIT_PRIORITY code
	Tidy up and update description header
	Shorten needlessly long lines

1999-01-21  Jesper Skov  <[e-mail]>
        Merge with FADS branch.

        1998-12-17  Jesper Skov  <[e-mail]>

	* src/ppc_860.h: Added as private header.

	* src/PKGconf.mak (COMPILE): Added quicc_smc.c.

	* include/quicc_smc.h: Prefix exported names with cyg_.

	* src/quicc_smc.c: Use ppc_860.h as a private header.
	Made all but the necessary functions static. Prefixed the rest
	with cyg_.
	Moved the RS232 interface enabling here from hal_diag since it
	is apparently required by both hal_stub and hal_diag.

1999-01-20  Jesper Skov  <[e-mail]>

	* src/powerpc.ld (SECTION_bss): Added align statement.

1999-01-20  Jesper Skov  <[e-mail]>

	* src/vectors.S: Changed _STUB to _STUBS. 

1999-01-19  Jesper Skov  <[e-mail]>

	* src/vectors.S: 
	* src/hal_misc.c (hal_enable_caches):
	Also support HAL_STARTUP_STUB.
	
1999-01-15  Jesper Skov  <[e-mail]>

	* src/hal_misc.c:
	* src/hal_intr.c: 
	Move external declarations out of functions.

1999-01-14  Jesper Skov  <[e-mail]>

	* src/vectors.S (_start): Copy data to RAM before calling C
	functions (or "don't initialize the MMU with random data").

	* src/hal_misc.c: ROM is cache inhibited.

1999-01-13  Gary Thomas  <[e-mail]>

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

1999-01-12  Gary Thomas  <[e-mail]>

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

1999-01-11  Jesper Skov  <[e-mail]>

	* include/hal_io.h: Fixed indentation.

1999-01-05  Jesper Skov  <[e-mail]>

	* include/hal_intr.h (HAL_CLOCK_RESET): Undid below change;
	doesn't always work.

1998-12-15  Jesper Skov  <[e-mail]>

	* include/hal_intr.h (HAL_CLOCK_RESET): Add rather than store to
	avoid wall-clock drift.

1998-12-11  Jesper Skov  <[e-mail]>

	* src/vectors.S: Cleaned up code to use r14/r15 during
	interrupt/exception handling, which is necessary to support
	-msdata.
	Put hal tables in sdata section when smaller than threshold.
	
1998-12-11  Jesper Skov  <[e-mail]>

	* include/hal_cache.h: Defined three more macros.

1998-12-10  Jesper Skov  <[e-mail]>

	* include/hal_cache.h: Defined three more macros.

1998-12-10  Jesper Skov  <[e-mail]>

	* src/vectors.S: Make the program exception jump to ROM if no GDB
	stub was configured.

1998-12-10  Jesper Skov  <[e-mail]>

	* include/hal_cache.h: Added HAL_ICACHE_UNLOCK_ALL and
	HAL_DCACHE_UNLOCK_ALL for sim (unused).

1998-12-10  Jesper Skov  <[e-mail]>

	* include/hal_cache.h: Defined cache locking macros. Changed
	invalidate macros not to unlock.

	* include/ppc_regs.h: Added some instruction cache definitions.

	* src/hal_misc.c (hal_enable_caches): Unlock caches before
	invalidating.

1998-12-09  Jesper Skov  <[e-mail]>

	* src/hal_misc.c (hal_enable_caches): Don't enable caches when
	configured for ROM.

1998-12-09  Jesper Skov  <[e-mail]>

	* include/ppc_regs.h: TBx_W are SPR registers.

	* src/vectors.S (_init_CPU, _start): Added a few sync instructions.

1998-12-08  Jesper Skov  <[e-mail]>

	* include/ppc_regs.h (CYGARC_REG_IMM_OR_CSNT): Fixed typo.

1998-12-08  Jesper Skov  <[e-mail]>

	* include/ppc_regs.h: Added more definitions.

1998-12-07  Jesper Skov  <[e-mail]>

	* src/vectors.S (_init_CPU): Proper solution to the problem of
	MMU/cache initialization.

1998-12-07  Jesper Skov  <[e-mail]>

	* src/vectors.S (_start): Map RAM before accessing it. Only
	disable MMU just before (re)programming it.

1998-12-04  Jesper Skov  <[e-mail]>

	* src/hal_intr.c:
	* src/hal_intr.cxx:
	* src/PKGconf.mak:
	Renamed hal_intr.cxx to hal_intr.c.
	
1998-12-04  Jesper Skov  <[e-mail]>

	* tests/intr0.c: Improved somewhat. Also fixes PR 18440.

	* src/hal_intr.cxx:
	* src/PKGconf.mak:
	Added hal_intr.cxx.

	* include/ppc_regs.h: More register definitions.

	* include/hal_intr.h: Handle decrementer in HAL_INTERRUPT_ mask
	and configure macros.
	Added declarations for interrupt arbiters.

1998-12-02  Jesper Skov  <[e-mail]>
        PR 18425

	* src/vectors.S:
	* include/ppc_regs.h:
	* include/hal_intr.h:
	Prefixed remaining definitions used by hal_intr.h.

	* include/hal_intr.h:
	Added more definitions. Fixed wrong TBx_R values.

1998-12-01  Jesper Skov  <[e-mail]>

	* tests/PKGconf.mak:
	* tests/intr0.c:
	First simple test of 860 specific interrupt handling.

	* src/vectors.S (__default_interrupt_vsr): Don't shift decoded
	vector number.

	* src/hal_misc.c (hal_clear_MMU): Added.
	(hal_MMU_init): Call hal_clear_MMU to ensure a sane MMU state.

	* include/ppc_regs.h: Added even more definitions.

	* include/hal_intr.h: Fixed interrupt functions to deal with
	interleaved IRQ/LVL vectors.

1998-11-30  Jesper Skov  <[e-mail]>

	* src/vectors.S (__default_interrupt_vsr): Always call
	cyg_hal_gdb_isr when GDB_BREAK support is enabled.
	Added comment about nesting.

1998-11-30  Jesper Skov  <[e-mail]>

	* include/ppc_regs.h: Added a few more definitions.

	* src/vectors.S (decode_interrupt): Added 1st level arbitration
	for MPC860.

	* include/hal_intr.h: Added (properly ordered) LVL vectors.
	Changed if/else to switch/case.
	Added configuration of priorities/level.

1998-11-30  Jesper Skov  <[e-mail]>

	* src/vectors.S (decode_interrupt): Update the vector in the state
	frame.

1998-11-27  Jesper Skov  <[e-mail]>

	* include/ppc_regs.h: Added more 860 IMM registers.

	* include/hal_io.h: Changed HAL_IO_BARRIER so it can be used from
	C++.

	* include/hal_intr.h: First part of 860 interrupt controller
	support.

	* src/vectors.S: 
	* include/hal_intr.h:
	Exchanged extern and decrementer interrupt ISR vectors to allow
	more sensible extension.
	
1998-11-27  Jesper Skov  <[e-mail]>

	* src/hal_misc.c: The memory map descriptor table is now weakly
	defined so applications can override it.

1998-11-26  Jesper Skov  <[e-mail]>

	* include/ppc_regs.h: 
	* src/hal_misc.c (hal_map_memory):
	Added handling of Guarded attribute.

1998-11-26  Jesper Skov  <[e-mail]>

	* include/hal_arch.h: Added definition for magic constant.

1998-11-26  Jesper Skov  <[e-mail]>

	* src/vectors.S: 
	* include/hal_arch.h: 
	* include/ppc.inc:
	Moved SPR definitions to ppc_regs.h.
	
1998-11-26  Jesper Skov  <[e-mail]>

	* src/vectors.S: 
	* src/ppc_stub.c: 
	* src/hal_misc.c: 
	Changes due to ppc_regs.h cleanup.

	* src/ppc_stub.h: Added convenience definition for SP register.

	* include/ppc_regs.h: Got rid of GDB register definitions.
	Cleaned up a bit.

	* include/ppc_regs.h: 
	* include/hal_cache.h: 
	Prefixed register names with CYGARC_REG_ to avoid name space
	pollution.

	* include/hal_arch.h: 
	* src/context.S: 
	Replaced magic constants in jmpbuf with defines.

1998-11-25  Jesper Skov  <[e-mail]>

	* src/vectors.S (__start): Got rid of a few magic constants.

	* include/hal_intr.h (HAL_CLOCK_INITIALIZE,
	HAL_CLOCK_RESET): Cleaned up a bit.

	* include/ppc_regs.h: Added DC_ADR_ and TBU/TBL macros.

	* include/hal_cache.h: Got rid of a few magic constants. 
	Changed types in cyg_memdesc_t. 
	* src/hal_misc.c (hal_map_memory): Changed argument types.

	* include/hal_arch.h: Changed a few comments.

1998-11-23  Jesper Skov  <[e-mail]>

	* src/vectors.S: Cleaned up CYG_MSR definition.