Commit Graph

28 Commits

Author SHA1 Message Date
David Lechner
82dc9856b0 py/asmarm: Use __builtin___clear_cache instead of __clear_cache.
__clear_cache causes a compile error when using clang.  Instead use
__builtin___clear_cache which is available under both gcc and clang.

Also replace tabs with spaces in this section of code (introduced by a
previous commit).
2019-07-12 16:48:37 +10:00
David Lechner
62b00dd5d8 py/asmarm: Use __clear_cache on Linux/GCC when creating new asm code.
Comes from https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/caches-and-self-modifying-code

This fixes a crash when running MicroPython using qemu-arm.
2019-07-03 01:19:41 +10:00
Damien George
1396a026be py: Add support to save native, viper and asm code to .mpy files.
This commit adds support for saving and loading .mpy files that contain
native code (native, viper and inline-asm).  A lot of the ground work was
already done for this in the form of removing pointers from generated
native code.  The changes here are mainly to link in qstr values to the
native code, and change the format of .mpy files to contain native code
blocks (possibly mixed with bytecode).

A top-level summary:

- @micropython.native, @micropython.viper and @micropython.asm_thumb/
  asm_xtensa are now allowed in .py files when compiling to .mpy, and they
  work transparently to the user.

- Entire .py files can be compiled to native via mpy-cross -X emit=native
  and for the most part the generated .mpy files should work the same as
  their bytecode version.

- The .mpy file format is changed to 1) specify in the header if the file
  contains native code and if so the architecture (eg x86, ARMV7M, Xtensa);
  2) for each function block the kind of code is specified (bytecode,
  native, viper, asm).

- When native code is loaded from a .mpy file the native code must be
  modified (in place) to link qstr values in, just like bytecode (see
  py/persistentcode.c:arch_link_qstr() function).

In addition, this now defines a public, native ABI for dynamically loadable
native code generated by other languages, like C.
2019-03-08 15:53:05 +11:00
Damien George
5f1dd5b86b py/asmarm: Simplify asm_arm_bl_ind to only load via index, not literal.
The maximum index into mp_fun_table is currently less than 1024 and should
stay that way to keep things efficient for all architectures, so there is
no need to handle loading the pointer directly via a literal in this
function.
2018-10-13 15:16:33 +11:00
Damien George
2964b41c28 py/asm*: Support assembling code to jump to a register, and get PC+off.
Useful for position independent code, and implementing state machines.
2018-08-16 13:45:24 +10:00
Damien George
c0bcf00ed1 py/asm*.c: Remove unnecessary check for num_locals<0 in asm entry func.
All callers of the asm entry function guarantee that num_locals>=0, so no
need to add an explicit check for it.  Use an assertion instead.

Also, the signature of asm_x86_entry is changed to match the other asm
entry functions.
2018-02-24 23:10:20 +11:00
Alexander Steffen
55f33240f3 all: Use the name MicroPython consistently in comments
There were several different spellings of MicroPython present in comments,
when there should be only one.
2017-07-31 18:35:40 +10:00
Damien George
761e4c7ff6 all: Remove trailing spaces, per coding conventions. 2017-07-19 13:12:10 +10:00
Damien George
3f9c45efd1 py/asmarm: Fix assembler's PASS_EMIT constant name. 2017-01-03 15:40:50 +11:00
Damien George
93ee6603b1 py/asm: Fix x86 and ARM assemblers due to recent code refactoring. 2016-12-09 22:54:45 +11:00
Damien George
155fdc74d5 py/asm: Remove need for dummy_data when doing initial assembler passes.
For all but the last pass the assembler only needs to count how much space
is needed for the machine code, it doesn't actually need to emit anything.
The dummy_data just uses unnecessary RAM and without it the code is not
any more complex (and code size does not increase for Thumb and Xtensa
archs).
2016-12-09 22:50:58 +11:00
Damien George
612599587b py: Factor out common code from assemblers into asmbase.[ch].
All assemblers should "derive" from mp_asm_base_t.
2016-11-28 09:24:50 +11:00
Damien George
567b349c2b py: Implement native multiply operation in viper emitter. 2015-06-04 14:00:29 +00:00
Paul Sokolovsky
351424e719 emitnative: Revamp ARM codegen compile after full-arg support refactors.
The code was apparently broken after 9988618e0e
"py: Implement full func arg passing for native emitter.". This attempts to
propagate those changes to ARM emitter.
2015-05-08 22:35:34 +01:00
Damien George
4dea922610 py: Adjust some spaces in code style/format, purely for consistency. 2015-04-09 15:29:54 +00:00
Damien George
d9dc6fff21 py: Allocate memory for assembled code at start of PASS_EMIT.
Previously was allocating at end of PASS_COMPUTE, and this pass was
being run twice, so memory was being allocated twice.
2015-01-14 00:38:33 +00:00
Damien George
51dfcb4bb7 py: Move to guarded includes, everywhere in py/ core.
Addresses issue #1022.
2015-01-01 20:32:09 +00:00
Paul Sokolovsky
c0bc3bd736 asmarm: Fix bug with encoding small negative ints using MVN instruction. 2014-12-14 03:24:17 +02:00
Damien George
91cfd414c0 py: Implement native load for viper.
Viper can now do: ptr8(buf)[0], which loads a byte from a buffer using
machine instructions.
2014-10-12 16:59:29 +01:00
Damien George
1ef2348df0 py: Implement and,or,xor native ops for viper. 2014-10-12 14:21:06 +01:00
Fabian Vogt
e5268963c6 Implement missing ARM emitter functions for viper 2014-10-04 00:57:21 +02:00
Damien George
3112cde900 py: Implement more binary ops for viper emitter.
This included a bit of restructuring of the assembler backends.  Note
that the ARM backend is missing a few functions and won't compile.
2014-09-29 19:42:06 +01:00
Damien George
0b610de017 py: Make macro names in assemblers consistent, and tidy up a bit. 2014-09-29 19:42:06 +01:00
Damien George
d4a799f152 py: Make asm_arm_less_op take destination register as first arg.
This gets ARM native emitter working againg and addresses issue #858.
2014-09-15 16:39:24 +01:00
Damien George
dda46460ff Code style/whitespace cleanup; remove obsolete headers.
And move the MAP_ANON redefinition from py/asmx64.c to unix/alloc.c.
2014-09-03 22:47:23 +01:00
Fabian Vogt
b7235b8412 Add cache flush in py/asmarm.c and add new MP_PLAT_ALLOC_EXEC and MP_PLAT_FREE_EXEC macros
Fixes issue #840
2014-09-03 23:07:42 +02:00
Fabian Vogt
16ee30c6fa Clarify copyright on asmarm files 2014-08-28 01:18:56 +02:00
Fabian Vogt
fe3d16e8c2 Basic native ARM emitter 2014-08-27 18:18:50 +02:00