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py/persistentcode: Add ability to relocate loaded native code.

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Implements text, rodata and bss generalised relocations, as well as generic
qstr-object linking.  This allows importing dynamic native modules on all
supported architectures in a unified way.
This commit is contained in:
Damien George
2019-10-06 23:29:40 +11:00
parent b310930dba
commit b47e155bd0
9 changed files with 106 additions and 12 deletions
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6
py/runtime0.h
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@@ -28,13 +28,17 @@
// The first four must fit in 8 bits, see emitbc.c
// The remaining must fit in 16 bits, see scope.h
#define MP_SCOPE_FLAG_ALL_SIG (0x0f)
#define MP_SCOPE_FLAG_GENERATOR (0x01)
#define MP_SCOPE_FLAG_VARKEYWORDS (0x02)
#define MP_SCOPE_FLAG_VARARGS (0x04)
#define MP_SCOPE_FLAG_DEFKWARGS (0x08)
#define MP_SCOPE_FLAG_REFGLOBALS (0x10) // used only if native emitter enabled
#define MP_SCOPE_FLAG_HASCONSTS (0x20) // used only if native emitter enabled
#define MP_SCOPE_FLAG_VIPERRET_POS (6) // 3 bits used for viper return type
#define MP_SCOPE_FLAG_VIPERRET_POS (6) // 3 bits used for viper return type, to pass from compiler to native emitter
#define MP_SCOPE_FLAG_VIPERRELOC (0x10) // used only when loading viper from .mpy
#define MP_SCOPE_FLAG_VIPERRODATA (0x20) // used only when loading viper from .mpy
#define MP_SCOPE_FLAG_VIPERBSS (0x40) // used only when loading viper from .mpy
// types for native (viper) function signature
#define MP_NATIVE_TYPE_OBJ (0x00)