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hwstub/qeditor: add support for atomic read/writes

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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
This commit is contained in:
Marcin Bukat 2014-11-18 23:27:26 +01:00
parent 794169a18f
commit cd04a5f1aa
12 changed files with 254 additions and 24 deletions
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4
utils/hwstub/tools/init.lua
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@ -38,8 +38,8 @@ do
h = HELP:create_topic("DEV");
h:add("This variable redirects to hwstub.dev and provides direct access to the device.");
h:add("It contains some information about the device and the following methods.");
h:add("* read8/16/32(a) reads a 8/16/32-bit integer at address a");
h:add("* write8/16/32(a, v) writes the 8/16/32-bit integer v at address a");
h:add("* read8/16/32(a) reads a 8/16/32-bit integer at address a atomically");
h:add("* write8/16/32(a, v) writes the 8/16/32-bit integer v at address a atomically");
h:add("* print_log() prints the device log");
h = HELP:create_topic("HW");