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toolchain: Remove vestigial COFF assembler symbol mangling support

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The toolchain headers included an abstraction for defining symbol
names in assembly context in the situation where we're using a
DOS-style assembler that automatically prepends an underscore to
symbol names.

We aren't.  Zephyr is an ELF platform.  None of our toolchains do
this.  Nothing sets the "TOOL_PREPENDS_UNDERSCORE" macro from within
the project, and it surely isn't an industry standard.  Yank it out.
Now we can write assembler labels in natural syntax, and a few other
things fall out to simplify too.

(NOTE: these headers contain assembly code and will fail checkpatch.
That is an expected false positive.)

Change-Id: Ic89e74422b52fe50b3b7306a0347d7a560259581
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
This commit is contained in:
Andy Ross 2016-08-18 09:25:00 -07:00 • committed by Andrew Boie
commit 9f628943a8
8 changed files with 60 additions and 83 deletions
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2
arch/arm/core/swap.S
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@ -186,7 +186,7 @@ SECTION_FUNC(TEXT, __svc)
/* exception return is done in _IntExit(), including _GDB_STUB_EXC_EXIT */
b _IntExit
BRANCH_LABEL(_context_switch);
_context_switch:
#endif
/*