Commit Graph

269 Commits

Author SHA1 Message Date
Damien George 6c6050ca43 py/emitnative: Push internal None rather than const obj where possible.
This shifts the work of loading the constant None object on to
load_reg_stack_imm(), making the handling of None more centralised.
2018-10-15 00:20:49 +11:00
Damien George 7c16bc0406 py/emitnative: Simplify viper mode handling in emit_native_import_name. 2018-10-15 00:20:49 +11:00
Damien George 175739cd37 py/emitnative: Consolidate use of stacked immediate values to one func.
This commit adds the helper function load_reg_stack_imm() which deals with
constant immediate values and converting them to Python objects if needed.
2018-10-15 00:20:49 +11:00
Damien George 6bda951d4d py/emitnative: Remove unused ptr argument from ASM_CALL_IND macro. 2018-10-13 15:16:33 +11:00
Damien George 25571800fc py/asmthumb: Remove unused fun_ptr arg from asm_thumb_bl_ind function. 2018-10-13 15:16:33 +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 006671056d py/emitnative: Load native fun table ptr from const table for all archs.
All architectures now have a dedicated register to hold the pointer to the
native function table mp_fun_table, and so they all need to load this
register at the start of the native function.  This commit makes the
loading of this register uniform across architectures by passing the
pointer in the constant table for the native function, and then loading the
register from the constant table.  Doing it this way means that the pointer
is not stored in the assembly code, helping to make the code more portable.
2018-10-13 15:16:33 +11:00
Damien George 355eb8eafb py/asmx86: Change indirect calls to load fun ptr from the native table.
Instead of storing the function pointer directly in the assembly code.
This makes the generated code more independent of the runtime (so easier to
relocate the code), and reduces the generated code size.
2018-10-13 15:16:33 +11:00
Damien George 8e4b4bac70 py/asmx64: Change indirect calls to load fun ptr from the native table.
Instead of storing the function pointer directly in the assembly code.
This makes the generated code more independent of the runtime (so easier to
relocate the code), and reduces the generated code size.
2018-10-13 15:16:33 +11:00
Damien George 34af10d2ef py/emitnative: Clean up unused macro and forward function declarations. 2018-10-02 15:01:56 +10:00
Damien George cc2bd63c57 py/emitnative: Implement yield and yield-from in native emitter.
This commit adds first class support for yield and yield-from in the native
emitter, including send and throw support, and yields enclosed in exception
handlers (which requires pulling down the NLR stack before yielding, then
rebuilding it when resuming).

This has been fully tested and is working on unix x86 and x86-64, and
stm32.  Also basic tests have been done with the esp8266 port.  Performance
of existing native code is unchanged.
2018-10-01 13:31:11 +10:00
Damien George 8fec6f5434 py/emitnative: Reorder native state on C stack so nlr_buf_t is first.
The nlr_buf_t doesn't need to be part of the Python value stack (as it was
before this commit), it's simpler to have it separated as auxiliary state
that lives on the C stack.  This will help adding yield support because in
that case the nlr_buf_t and Python value stack live in separate memory
areas (C stack and heap respectively).
2018-10-01 12:36:21 +10:00
Damien George e9012a20f7 py/emitnative: Change type of const_table from uintptr_t to mp_uint_t.
This matches how bytecode does it, and matches the signature of
mp_emit_glue_assign_native.  Since the native emitter doesn't support
nan-boxing uintptr_t and mp_uint_t are anyway the same bit-width.
2018-09-28 00:04:10 +10:00
Damien George 7d4b6cc868 py/emitnative: Place const objs for native code in separate const table.
This commit changes native code to handle constant objects like bytecode:
instead of storing the pointers inside the native code they are now stored
in a separate constant table (such pointers include objects like bignum,
bytes, and raw code for nested functions).  This removes the need for the
GC to scan native code for root pointers, and takes a step towards making
native code independent of the runtime (eg so it can be compiled offline by
mpy-cross).

Note that the changes to the struct scope_t did not increase its size: on a
32-bit architecture it is still 48 bytes, and on a 64-bit architecture it
decreased from 80 to 72 bytes.
2018-09-27 23:39:08 +10:00
Damien George 30a45360e7 py/asmxtensa: Make indirect calls using func table, not raw pointers.
Loading a pointer by indexing into the native function table mp_fun_table,
rather than loading an immediate value (via a PC-relative load), uses less
code space.
2018-09-16 00:43:24 +10:00
Damien George 93d71c5436 py/emitnative: Make viper funcs run with their correct globals context.
Viper functions will now capture the globals at the point they were defined
and use these globals when executing.
2018-09-15 22:39:27 +10:00
Damien George f12e039c2b py/emitnative: Use macros instead of raw offsetof for slot locations.
Old globals are now stored in the second slot (ip in mp_code_state_t) to
make things simpler for viper.
2018-09-15 22:39:27 +10:00
Damien George a676b5acf6 py/emitnative: Support arbitrary number of arguments to viper functions. 2018-09-15 22:39:27 +10:00
Damien George 43f1848bfa py: Make viper functions have the same entry signature as native.
This commit makes viper functions have the same signature as native
functions, at the level of the emitter/assembler.  This means that viper
functions can now be wrapped in the same uPy object as native functions.

Viper functions are now responsible for parsing their arguments (before it
was done by the runtime), and this makes calling them more efficient (in
most cases) because the viper entry code can be custom generated to suit
the signature of the function.

This change also opens the way forward for viper functions to take
arbitrary numbers of arguments, and for them to handle globals correctly,
among other things.
2018-09-15 22:39:27 +10:00
Damien George 460954734e py/emitnative: Reuse mp_native_type_from_qstr when searching for a cast. 2018-09-15 13:52:58 +10:00
Damien George 80db30a510 py/emit: Completely remove set_native_type, arg type is set in compiler.
In viper mode, the type of the argument is now stored in id_info->flags.
2018-09-15 13:00:11 +10:00
Damien George 07caf4f969 py/emit: Remove need to call set_native_type to set viper return type.
Instead this return type is now stored in the scope_flags.
2018-09-15 12:41:25 +10:00
Damien George 1d7c221b30 py/emit: Remove need to call set_native_type to set native/viper mode.
The native emitter can easily determine the mode via scope->emit_options.
2018-09-15 12:17:14 +10:00
Damien George 4f3d9429b5 py: Fix native functions so they run with their correct globals context.
Prior to this commit a function compiled with the native decorator
@micropython.native would not work correctly when accessing global
variables, because the globals dict was not being set upon function entry.

This commit fixes this problem by, upon function entry, setting as the
current globals dict the globals dict context the function was defined
within, as per normal Python semantics, and as bytecode does.  Upon
function exit the original globals dict is restored.

In order to restore the globals dict when an exception is raised the native
function must guard its internals with an nlr_push/nlr_pop pair.  Because
this push/pop is relatively expensive, in both C stack usage for the
nlr_buf_t and CPU execution time, the implementation here optimises things
as much as possible.  First, the compiler keeps track of whether a function
even needs to access global variables.  Using this information the native
emitter then generates three different kinds of code:

1. no globals used, no exception handlers: no nlr handling code and no
   setting of the globals dict.

2. globals used, no exception handlers: an nlr_buf_t is allocated on the
   C stack but it is not used if the globals dict is unchanged, saving
   execution time because nlr_push/nlr_pop don't need to run.

3. function has exception handlers, may use globals: an nlr_buf_t is
   allocated and nlr_push/nlr_pop are always called.

In the end, native functions that don't access globals and don't have
exception handlers will run more efficiently than those that do.

Fixes issue #1573.
2018-09-13 22:47:20 +10:00
Damien George f2de9d60f7 py/emitnative: Fix try-finally in outer scope, so finally is cancelled. 2018-09-11 15:33:25 +10:00
Damien George 4ae7111573 py/emitnative: Add support for return/break/continue in try and with.
This patch adds full support for unwinding jumps to the native emitter.
This means that return/break/continue can be used in try-except,
try-finally and with statements.  For code that doesn't use unwinding jumps
there is almost no overhead added to the generated code.
2018-09-04 14:31:28 +10:00
Damien George 3cd2c281d7 py/emitnative: Cancel caught exception once handled to prevent reraise.
The native emitter keeps the current exception in a slot in its C stack
(instead of on its Python value stack), so when it catches an exception it
must explicitly clear that slot so the same exception is not reraised later
on.
2018-09-03 17:41:02 +10:00
Damien George a0a29724c8 py/emitnative: Fix bug with store of 16 and 32 values in viper ARM mode. 2018-08-17 14:11:37 +10:00
Scott Shawcroft 2cd166b573
Fix esp and samd 2018-08-16 17:41:35 -07:00
Damien George a3de776486 py/emitnative: Optimise and improve exception handling in native code.
Prior to this patch, native code would use a full nlr_buf_t for each
exception handler (try-except, try-finally, with).  For nested exception
handlers this would use a lot of C stack and be rather inefficient.

This patch changes how exceptions are handled in native code by setting up
only a single nlr_buf_t context for the entire function, and then manages a
state machine (using the PC) to work out which exception handler to run
when an exception is raised by an nlr_jump.  This keeps the C stack usage
at a constant level regardless of the depth of Python exception blocks.

The patch also fixes an existing bug when local variables are written to
within an exception handler, then their value was incorrectly restored if
an exception was raised (since the nlr_jump would restore register values,
back to the point of the nlr_push).

And it also gets nested try-finally+with working with the viper emitter.

Broadly speaking, efficiency of executing native code that doesn't use
any exception blocks is unchanged, and emitted code size is only slightly
increased for such function.  C stack usage of all native functions is
either equal or less than before.  Emitted code size for native functions
that use exception blocks is increased by roughly 10% (due in part to
fixing of above-mentioned bugs).

But, most importantly, this patch allows to implement more Python features
in native code, like unwind jumps and yielding from within nested exception
blocks.
2018-08-16 13:56:36 +10:00
Damien George 8c49995398 py/emitnative: Use small tables to simplify handling of local regs. 2018-08-15 10:55:11 +10:00
Scott Shawcroft 96ebf5bc3f
Two fixes and translate more strings.
* Fix finding translations with escaped characters.
* Add back \r to translations since its needed by screen.
2018-08-09 13:29:30 -07:00
Damien George 17b512020b py/emitnative: Allocate space for local stack info as it's needed. 2018-08-07 16:19:38 +10:00
Damien George 652a58698e py/emitnative: Simplify handling of exception objects from nlr_buf_t.
There is no need to have three copies of the exception object on the top of
the native value stack.  Instead, the values on the stack should be the
first two items in an nlr_buf_t: the prev pointer and the ret_val pointer.
This is all that is needed and is what the rest of the native emitter
expects is on the stack.

This patch is essentially an optimisation.  Behaviour is unchanged,
although the stack layout for native exception handling now makes more
sense.
2018-08-06 14:44:33 +10:00
Damien George 3bef7bd782 py/emitnative: Fix native locals stack to start at correct location.
A native function allocates space on its C stack for mp_code_state_t,
followed by its Python stack, then its locals.  This patch makes sure that
the native function actually starts at the start of its Python stack,
rather than at the start of mp_code_state_t (which didn't lead to any
issues so far because the mp_code_state_t is unused after the native
function sets itself up).
2018-08-04 22:41:35 +10:00
Damien George 10830059c5 py/emitnative: Fix x86 native zero checks by comparing full word.
On x86 archs (both 32 and 64 bit) a bool return value only sets the 8-bit
al register, and the higher bits of the ax register have an undefined
value.  When testing the return value of such cases it is required to just
test al for zero/non-zero.  On the other hand, checking for truth or
zero/non-zero on an integer return value requires checking all bits of the
register.  These two cases must be distinguished and handled correctly in
generated native code.  This patch makes sure of this.

For other supported native archs (ARM, Thumb2, Xtensa) there is no such
distinction and this patch does not change anything for them.
2018-08-04 22:03:49 +10:00
Damien George 4b1e8bdebd py/emitnative: Factor common code for native jump helper. 2018-08-04 21:45:24 +10:00
Damien George 8c9c167dc6 py/emitnative: Optimise for iteration asm code for non-debug build.
In non-debug mode MP_OBJ_STOP_ITERATION is zero and comparing something to
zero can be done more efficiently in assembler than comparing to a non-zero
value.
2018-07-12 18:08:01 +10:00
Damien George 18e6358480 py/emit: Combine setup with/except/finally into one emit function.
This patch reduces code size by:

   bare-arm:   -16
minimal x86:  -156
   unix x64:  -288
unix nanbox:  -184
      stm32:   -48
     cc3200:   -16
    esp8266:   -96
      esp32:   -16

The last 10 patches combined reduce code size by:

   bare-arm:  -164
minimal x86: -1260
   unix x64: -3416
unix nanbox: -1616
      stm32:  -676
     cc3200:  -232
    esp8266: -1144
      esp32:  -268
2018-05-23 00:35:16 +10:00
Damien George 436e0d4c54 py/emit: Merge build set/slice into existing build emit function.
Reduces code size by:

   bare-arm:    +0
minimal x86:    +0
   unix x64:  -368
unix nanbox:  -248
      stm32:  -128
     cc3200:   -48
    esp8266:  -184
      esp32:   -40
2018-05-23 00:23:36 +10:00
Damien George d97906ca9a py/emit: Combine import from/name/star into one emit function.
Change in code size is:

   bare-arm:    +4
minimal x86:   -88
   unix x64:  -456
unix nanbox:   -88
      stm32:   -44
     cc3200:    +0
    esp8266:  -104
      esp32:    +8
2018-05-23 00:23:08 +10:00
Damien George 8a513da5a5 py/emit: Combine break_loop and continue_loop into one emit function.
Reduces code size by:

   bare-arm:    +0
minimal x86:    +0
   unix x64:   -80
unix nanbox:    +0
      stm32:   -12
     cc3200:    +0
    esp8266:   -28
      esp32:    +0
2018-05-23 00:23:04 +10:00
Damien George 6211d979ee py/emit: Combine load/store/delete attr into one emit function.
Reduces code size by:

   bare-arm:   -20
minimal x86:  -140
   unix x64:  -408
unix nanbox:  -140
      stm32:   -68
     cc3200:   -16
    esp8266:   -80
      esp32:   -32
2018-05-23 00:22:59 +10:00
Damien George a4941a8ba4 py/emit: Combine load/store/delete subscr into one emit function.
Reduces code size by:

   bare-arm:    -8
minimal x86:  -104
   unix x64:  -312
unix nanbox:  -120
      stm32:   -60
     cc3200:   -16
    esp8266:   -92
      esp32:   -24
2018-05-23 00:22:55 +10:00
Damien George d298013939 py/emit: Combine name and global into one func for load/store/delete.
Reduces code size by:

   bare-arm:   -56
minimal x86:  -300
   unix x64:  -576
unix nanbox:  -300
      stm32:  -164
     cc3200:   -56
    esp8266:  -236
      esp32:   -76
2018-05-23 00:22:47 +10:00
Damien George 26b5754092 py/emit: Combine build tuple/list/map emit funcs into one.
Reduces code size by:

   bare-arm:   -24
minimal x86:  -192
   unix x64:  -288
unix nanbox:  -184
      stm32:   -72
     cc3200:   -16
    esp8266:  -148
      esp32:   -32
2018-05-23 00:22:44 +10:00
Damien George e686c94052 py/emit: Combine yield value and yield-from emit funcs into one.
Reduces code size by:

   bare-arm:   -24
minimal x86:   -72
   unix x64:  -200
unix nanbox:   -72
      stm32:   -52
     cc3200:   -32
    esp8266:   -84
      esp32:   -24
2018-05-23 00:22:35 +10:00
Damien George 0a25fff956 py/emit: Combine fast and deref into one function for load/store/delete.
Reduces code size by:

   bare-arm:   -16
minimal x86:  -208
   unix x64:  -408
unix nanbox:  -248
      stm32:   -12
     cc3200:   -24
    esp8266:   -96
      esp32:   -44
2018-05-23 00:22:20 +10:00
Damien George ef12a4bd05 py: Refactor how native emitter code is compiled with a file per arch.
Instead of emitnative.c having configuration code for each supported
architecture, and then compiling this file multiple times with different
macros defined, this patch adds a file per architecture with the necessary
code to configure the native emitter.  These files then #include the
emitnative.c file.

This simplifies emitnative.c (which is already very large), and simplifies
the build system because emitnative.c no longer needs special handling for
compilation and qstr extraction.
2018-04-10 15:06:47 +10:00
Damien George 564a95cb04 py/emitnative: Clean up asm macro names so they have dest as first arg.
All the asm macro names that convert a particular architecture to a generic
interface now follow the convention whereby the "destination" (usually a
register) is specified first.
2017-11-15 11:46:49 +11:00
Damien George c59fc1419d py/emitnative: Simplify binary op emitter, no need to check inplace ops. 2017-10-12 12:26:49 +11:00
Damien George a3afa8cfc4 py/emitnative: Implement floor-division and modulo for viper emitter. 2017-10-11 18:54:34 +11:00
Damien George a3dc1b1957 all: Remove inclusion of internal py header files.
Header files that are considered internal to the py core and should not
normally be included directly are:
    py/nlr.h - internal nlr configuration and declarations
    py/bc0.h - contains bytecode macro definitions
    py/runtime0.h - contains basic runtime enums

Instead, the top-level header files to include are one of:
    py/obj.h - includes runtime0.h and defines everything to use the
        mp_obj_t type
    py/runtime.h - includes mpstate.h and hence nlr.h, obj.h, runtime0.h,
        and defines everything to use the general runtime support functions

Additional, specific headers (eg py/objlist.h) can be included if needed.
2017-10-04 12:37:50 +11:00
Stefan Naumann ace9fb5405 py: Add verbose debug compile-time flag MICROPY_DEBUG_VERBOSE.
It enables all the DEBUG_printf outputs in the py/ source code.
2017-08-15 11:53:36 +10:00
Javier Candeira 35a1fea90b all: Raise exceptions via mp_raise_XXX
- Changed: ValueError, TypeError, NotImplementedError
  - OSError invocations unchanged, because the corresponding utility
    function takes ints, not strings like the long form invocation.
  - OverflowError, IndexError and RuntimeError etc. not changed for now
    until we decide whether to add new utility functions.
2017-08-13 22:52:33 +10:00
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 dd11af209d py: Add LOAD_SUPER_METHOD bytecode to allow heap-free super meth calls.
This patch allows the following code to run without allocating on the heap:

    super().foo(...)

Before this patch such a call would allocate a super object on the heap and
then load the foo method and call it right away.  The super object is only
needed to perform the lookup of the method and not needed after that.  This
patch makes an optimisation to allocate the super object on the C stack and
discard it right after use.

Changes in code size due to this patch are:

   bare-arm: +128
    minimal: +232
   unix x64: +416
unix nanbox: +364
     stmhal: +184
    esp8266: +340
     cc3200: +128
2017-04-22 23:39:20 +10:00
Damien George 60656eaea4 py: Define and use MP_OBJ_ITER_BUF_NSLOTS to get size of stack iter buf.
It improves readability of code and reduces the chance to make a mistake.

This patch also fixes a bug with nan-boxing builds by rounding up the
calculation of the new NSLOTS variable, giving the correct number of slots
(being 4) even if mp_obj_t is larger than the native machine size.
2017-03-23 16:36:08 +11:00
Damien George 71a3d6ec3b py: Reduce size of mp_code_state_t structure.
Instead of caching data that is constant (code_info, const_table and
n_state), store just a pointer to the underlying function object from which
this data can be derived.

This helps reduce stack usage for the case when the mp_code_state_t
structure is stored on the stack, as well as heap usage when it's stored
on the heap.

The downside is that the VM becomes a little more complex because it now
needs to derive the data from the underlying function object.  But this
doesn't impact the performance by much (if at all) because most of the
decoding of data is done outside the main opcode loop.  Measurements using
pystone show that little to no performance is lost.

This patch also fixes a nasty bug whereby the bytecode can be reclaimed by
the GC during execution.  With this patch there is always a pointer to the
function object held by the VM during execution, since it's stored in the
mp_code_state_t structure.
2017-03-17 16:39:13 +11:00
Damien George 8cd4911e63 py/emitnative: Remove obsolete commented out code. 2017-03-15 10:03:22 +11:00
Damien George a5a84e1f85 py/emitnative: Use assertions and mp_not_implemented correctly.
Assertions are used to check expressions that should always be true,
and mp_not_implemented is used for code that can be reached.
2017-03-14 23:05:40 +11:00
Damien George 30b42dd72d py: Remove unused "use_stack" argument from for_iter_end emit function. 2017-02-16 18:38:06 +11:00
Damien George 088740ecc4 py: Optimise storage of iterator so it takes only 4 slots on Py stack. 2017-02-16 18:38:06 +11:00
Damien George f4df3aaa72 py: Allow bytecode/native to put iter_buf on stack for simple for loops.
So that the "for x in it: ..." statement can now work without using the
heap (so long as the iterator argument fits in an iter_buf structure).
2017-02-16 18:38:06 +11:00
Damien George ae8d867586 py: Add iter_buf to getiter type method.
Allows to iterate over the following without allocating on the heap:
- tuple
- list
- string, bytes
- bytearray, array
- dict (not dict.keys, dict.values, dict.items)
- set, frozenset

Allows to call the following without heap memory:
- all, any, min, max, sum

TODO: still need to allocate stack memory in bytecode for iter_buf.
2017-02-16 18:38:06 +11:00
Damien George f51f22dd42 py/emitnative: Remove assert(0)'s or replace with mp_not_implemented. 2017-01-17 17:02:21 +11:00
Damien George 8e5aced1fd py: Integrate Xtensa assembler into native emitter.
The config option MICROPY_EMIT_XTENSA can now be enabled to target the
Xtensa architecture with @micropython.native and @micropython.viper
decorators.
2016-12-09 16:51:49 +11:00
Damien George c8746e1e72 py: Move arch-specific assembler macros from emitnative to asmXXX.h. 2016-12-09 16:51:49 +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 0f3388de1e py/emitnative: Fix native import emitter when in viper mode. 2016-11-10 22:53:04 +11:00
Damien George a5624bf381 py: Combine 3 comprehension emit functions (list/dict/set) into 1.
The 3 kinds of comprehensions are similar enough that merging their emit
functions reduces code size.  Decreases in code size in bytes are:
bare-arm:24, minimal:96, unix(NDEBUG,x86-64):328, stmhal:80, esp8266:76.
2016-09-19 12:23:31 +10:00
Damien George 581a59a456 py: Rename struct mp_code_state to mp_code_state_t.
Also at _t to mp_exc_stack pre-declaration in struct typedef.
2016-08-27 23:21:00 +10:00
Damien George 23df4b08fb py/emitnative: Use MP_OBJ_NEW_SMALL_INT instead of manual bit shifting. 2016-04-26 10:02:32 +01:00
Damien George 2c915e1ae6 py: Implement basic with support in native emitter. 2016-04-07 08:53:24 +01:00
Damien George ce8b4e8749 py: Combine continuous block of emit steps into with_cleanup emit call.
Because different emitters need to handle with-cleanup in different ways.
2016-04-07 08:50:38 +01:00
Damien George 9598f36a84 py/emitnative: Add check that RHS of viper store is of integral type. 2016-02-15 09:38:02 +00:00
Damien George a2e5e4c3d8 py/viper: Allow uint as index to load/store, and give better error msg. 2016-02-09 13:46:49 +00:00
Damien George 5f3e005b67 py: Extend native type-sig to use 4 bits, so uint is separate to ptr.
Before this patch, the native types for uint and ptr/ptr8/ptr16/ptr32
all overlapped and it was possible to make a mistake in casting.  Now,
these types are all separate and any coding mistakes will be raised
as runtime errors.
2016-02-02 23:16:05 +00:00
Damien George bdbe8c9ae2 py: Make UNARY_OP_NOT a first-class op, to agree with Py not semantics.
Fixes #1684 and makes "not" match Python semantics.  The code is also
simplified (the separate MP_BC_NOT opcode is removed) and the patch saves
68 bytes for bare-arm/ and 52 bytes for minimal/.

Previously "not x" was implemented as !mp_unary_op(x, MP_UNARY_OP_BOOL),
so any given object only needs to implement MP_UNARY_OP_BOOL (and the VM
had a special opcode to do the ! bit).

With this patch "not x" is implemented as mp_unary_op(x, MP_UNARY_OP_NOT),
but this operation is caught at the start of mp_unary_op and dispatched as
!mp_obj_is_true(x).  mp_obj_is_true has special logic to test for
truthness, and is the correct way to handle the not operation.
2015-12-10 22:19:48 +00:00
Damien George 5d66b427e2 py/emit: Change type of arg of load_const_obj from void* to mp_obj_t. 2015-11-29 14:25:04 +00:00
Damien George c8e9c0d89a py: Add MICROPY_PERSISTENT_CODE so code can persist beyond the runtime.
Main changes when MICROPY_PERSISTENT_CODE is enabled are:

- qstrs are encoded as 2-byte fixed width in the bytecode
- all pointers are removed from bytecode and put in const_table (this
  includes const objects and raw code pointers)

Ultimately this option will enable persistence for not just bytecode but
also native code.
2015-11-13 12:49:18 +00:00
Damien George 713ea1800d py: Add constant table to bytecode.
Contains just argument names at the moment but makes it easy to add
arbitrary constants.
2015-11-13 12:49:18 +00:00
Damien George 3a3db4dcf0 py: Put all bytecode state (arg count, etc) in bytecode. 2015-11-13 12:49:18 +00:00
Damien George 9b7f583b0c py: Reorganise bytecode layout so it's more structured, easier to edit. 2015-11-13 12:49:18 +00:00
Damien George fcce1483fa py: Fix build of ARM native emitter due to recent viper changes.
Addresses #1510.
2015-10-14 12:40:54 +01:00
Damien George b8f9ac5411 py: Implement ptr32 load and store in viper emitter. 2015-10-13 00:50:17 +01:00
Damien George 9f5f156b9d py/emitnative: Raise ViperTypeError for unsupported unary ops. 2015-10-08 13:08:59 +01:00
Damien George fbcaf0ea18 py: Slightly simplify compile and emit of star/double-star arguments.
Saves a few bytes of code space and eliminates need for rot_two
bytecode (hence saving RAM and execution time, by a tiny bit).
2015-09-23 11:47:01 +01:00
Damien George c39093d801 py: In native ARM emitter, load r7 with table earlier in func prelude.
r7 may be needed to set up code state, so it must be loaded before the
set-up function is called.
2015-08-12 23:31:19 +01:00
Damien George 84d59c2873 py: For viper compile errors, add traceback with function and filename.
ViperTypeError now includes filename and function name where the error
occurred.  The line number is the line number of the start of the
function definition, which is the best that can be done without a lot
more work.

Partially addresses issue #1381.
2015-07-27 22:20:00 +01:00
Damien George f17e663493 py: Issue an error when compiling Viper functions with more than 4 args.
Otherwise it can be very hard to track down bugs.
2015-07-23 14:30:37 +01:00
Damien George 59fba2d6ea py: Remove mp_load_const_bytes and instead load precreated bytes object.
Previous to this patch each time a bytes object was referenced a new
instance (with the same data) was created.  With this patch a single
bytes object is created in the compiler and is loaded directly at execute
time as a true constant (similar to loading bignum and float objects).
This saves on allocating RAM and means that bytes objects can now be
used when the memory manager is locked (eg in interrupts).

The MP_BC_LOAD_CONST_BYTES bytecode was removed as part of this.

Generated bytecode is slightly larger due to storing a pointer to the
bytes object instead of the qstr identifier.

Code size is reduced by about 60 bytes on Thumb2 architectures.
2015-06-25 14:42:13 +00:00
Damien George ed570e4b2a py: Remove mp_load_const_str and replace uses with inlined version. 2015-06-25 13:58:41 +00:00
Damien George 567b349c2b py: Implement native multiply operation in viper emitter. 2015-06-04 14:00:29 +00:00
Damien George 4d9cad180d py: Implement implicit cast to obj for viper load/store index/value.
This allows to do "ar[i]" and "ar[i] = val" in viper when ar is a Python
object and i and/or val are native viper types (eg ints).

Patch also includes tests for this feature.
2015-06-04 11:52:16 +01:00
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 9a42eb541e py: Fix naming of function arguments when function is a closure.
Addresses issue #1226.
2015-05-06 13:55:33 +01:00
Damien George 8f6aad2f48 py/emitnative.c: Fix stack adjustment when erroring on binary op. 2015-04-22 23:16:03 +01:00
Damien George c8b60f013b py: Make viper codegen raise proper exception (ViperTypeError) on error.
This fixes a long standing problem that viper code generation gave
terrible error messages, and actually no errors on pyboard where
assertions are disabled.

Now all compile-time errors are raised as proper Python exceptions, and
are of type ViperTypeError.

Addresses issue #940.
2015-04-20 13:29:31 +00:00
Damien George 044c473de2 py: Add %q format support to mp_[v]printf, and use it. 2015-04-16 14:30:16 +00:00