rockbox/utils/hwstub/stub/main.c, branch master

hwstub: rewrite exception catching

2017-01-24T14:34:19+00:00

Since we can catch exceptions like data aborts on read/write, it takes very
little to also catch exceptions in calls. When extending this with the catching
of illegal instructions, the call instruction now becomes much more robust and
also for address and instruction probing. Since we can catch several types of
exception, rename set_data_abort_jmp to set_exception_jmp. At the same time,
simplify the logic in read/write request handlers. Also fix a bug in ARM
jump code: it was using
  stmia r1, {..., pc}
as if pc would get current pc + 8 but this is actually implementation defined
on older ARMs (typically pc + 12) and deprecated on newer ARMs, so rewrite the
code avoid that. The set_exception_jmp() function now also reports the exception
type.

Change-Id: Icd0dd52d2456b361b27c4776be09c3d13528ed93

hwstub: add support for coprocessor operations

2017-01-24T14:25:14+00:00

At the moment the stub only implement them for MIPS.

Change-Id: Ica835a0e9c70fa5675c3d655eae986e812a47de8

hwstub: add the possibility to flush caches before exec

2017-01-24T14:25:14+00:00

This is needed on the jz4760b because if some data is loaded to DRAM, then it
is cached and a disaster lurks if dcaches/icache are not flushed. Targets that
needs this must define CONFIG_FLUSH_CACHES in target-config.h and implement
target_flush_caches(). Currently MIPS has some generic code for mips32r1 that
requires to define {D,I}CACHE_SIZE and {D,I}CACHE_LINE_SIZE in target-config.h

Change-Id: I5a3fc085de9445d8c8a2eb61ae4e2dc9bb6b4e8e

hwstub: implement read/write data abort recovery

2015-01-13T22:35:33+00:00

Change-Id: I1625873b6864584c40984723d82548ad242ee08e

hwstub/qeditor: add support for atomic read/writes

2014-11-18T22:30:44+00:00

The current code assumed that READ/WRITE would produce atomic read/writes for
8/16/32-bit words, which in turned put assumption on the memcpy function.
Since some memcpy implementation do not always guarantee such strong assumption,
introduce two new operation READ/WRITE_ATOMIC which provide the necessary
tools to do correct read and write to register in a single memory access.

Change-Id: I37451bd5057bb0dcaf5a800d8aef8791c792a090

hwstub: Add atj213x support

2014-11-05T07:18:59+00:00

Change-Id: Ic32200f9ab2c6977e503307a9cbe43a1328d0341

hwstub: implement jump/call in stub

2014-09-08T09:07:42+00:00

Change-Id: I876fa012c5ae1509e57f5816a8ed31dc69d62ca0

hwstub: fix horrible bug

2014-09-07T15:45:35+00:00

Change-Id: I8042f692045a23dbb545d840e5169ce4b99fe5d2

hwstub: remove protocol to make it use its own interface

2014-09-07T15:45:10+00:00

This way, hwstub can be implemented along with other usb features/interfaces.

Change-Id: I7148cab845049cc0a8b8e740fa0d52d3a385eaed

hwstub: fix error in config descriptor, cleanup some code

2014-04-11T22:11:13+00:00

Change-Id: I853340ed2c187a044726ca03ec52aed655707e27