rockbox/utils/hwstub, branch master

hwstub: be more quiet about register description loading failure

2017-01-24T14:34:20+00:00

Change-Id: I0edbb838022b71485179edec7361a6c554a1ab11

hwstub: fix memory leak in net backend

2017-01-24T14:34:20+00:00

Change-Id: I98bef5aa0c518e698c42761d02899adde8bc4aca

hwstub/jz4760b: add lua code to probe for ei/di and ext instructions

2017-01-24T14:34:20+00:00

Add lua code to check whether ei/di and ext instructions are supported. This
is unclear since xburst is somewhere between mips32r1 and mips32r2. Details
results are below, but in summary: they don't work (ei has no effect, di/ext
cause illegal instruction exceptions)

> ./hwstub_shell -q -b -e 'require("jz/misc"); JZ.misc.enable_sram()' \
  -f lua/xburst.lua -e "XBURST.test_ext_inst(0xb32d0000)"
[...]
Selecting soc jz4760b. Redirecting HW to hwstub.soc.jz4760b
  data: d7168acf
error: lua/xburst.lua:209: call failed
trapped exception in call

> ./hwstub_shell -q -b -e 'require("jz/misc"); JZ.misc.enable_sram()' \
  -f lua/xburst.lua -e "XBURST.test_ei_di_inst(0xb32d0000)"
[...]
Selecting soc jz4760b. Redirecting HW to hwstub.soc.jz4760b
Testing ei
  Test SR
    Enable interrupts with CP0
    SR: 0x1
    Disable interrupts with CP0
    SR: 0x0
  Test ei/di
    Enable interrupts with ei
    SR: 0x0
    Disable interrupts with di
error: lua/xburst.lua:244: call failed
trapped exception in call

Change-Id: I2e162b5dd5e70488bcd8b58f3ca401a3ecab3c4b

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/jz460b: implement exception recovery

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

Now that we now that jz4760b implements EBASE, we can use it to rebase
exceptions to use a k1seg address, that maps to the physical address of the
TCSM0. It requires to enable HAB1 to have this translation. This most the most
inefficient way to access tighly coupled memory ever, but it works.

Change-Id: I894ca929c9835696102eb2fef44b06e6eaf96d44

hwstub: add tool to dump memory regions (such as ROM, RAM, or peripherals)

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

Although this case be done with hwstub_shell, this is common enough to deserve
its own tool.

Change-Id: I9253e40850f37257464548a3acefb14ea083841d

hwstub: small fixes to argument processing and usage()

2017-01-24T14:34:05+00:00

Change-Id: I3daa5e0c3fa2e7eab6a3d75b4c8aa66254d72f3c

hwstub/jz4760b: build packtools automatically if neeeded

2017-01-24T14:31:05+00:00

Change-Id: I543e405bf75868d0f7509a35e08fe31ed253e0e6

hwstub: add verbose mode to make

2017-01-24T14:31:05+00:00

Use make V=1 to print all commands

Change-Id: I28bd4151178413f10ddab292f1d582a9d019f5ea

hwstub: fix long transfers failing because of control xfer size of libusb

2017-01-24T14:31:05+00:00

libusb limits control transfer sizes to 4k, see diff for details.

Change-Id: Id2e638010274009ea641d06e9040a8b9ab9d54a9