J. Neuschäfer 7b050b366b py/nlrthumb: Make non-Thumb2 long-jump workaround opt-in. ... Although the original motivation given for the workaround[1] is correct, nlr.o and nlrthumb.o are linked with a small enough distance that the problem does not occur, and the workaround isn't necessary. The distance between the b instruction and its target (nlr_push_tail) is just 64 bytes[2], well within the ±2046 byte range addressable by an unconditional branch instruction in Thumb mode. The workaround induces a relocation in the text section (textrel), which isn't supported everywhere, notably not on musl-libc[3], where it causes a crash on start-up. With the workaround removed, micropython works on an ARMv5T Linux system built with musl-libc. This commit changes nlrthumb.c to use a direct jump by default, but leaves the long jump workaround as an option for those cases where it's actually needed. [1]: commit dd376a239d Author: Damien George <damien.p.george@gmail.com> Date: Fri Sep 1 15:25:29 2017 +1000 py/nlrthumb: Get working again on standard Thumb arch (ie not Thumb2). "b" on Thumb might not be long enough for the jump to nlr_push_tail so it must be done indirectly. [2]: Excerpt from objdump -d micropython: 000095c4 <nlr_push_tail>: 95c4: b510 push {r4, lr} 95c6: 0004 movs r4, r0 95c8: f02d fd42 bl 37050 <mp_thread_get_state> 95cc: 6943 ldr r3, [r0, #20] 95ce: 6023 str r3, [r4, #0] 95d0: 6144 str r4, [r0, #20] 95d2: 2000 movs r0, #0 95d4: bd10 pop {r4, pc} 000095d6 <nlr_pop>: 95d6: b510 push {r4, lr} 95d8: f02d fd3a bl 37050 <mp_thread_get_state> 95dc: 6943 ldr r3, [r0, #20] 95de: 681b ldr r3, [r3, #0] 95e0: 6143 str r3, [r0, #20] 95e2: bd10 pop {r4, pc} 000095e4 <nlr_push>: 95e4: 60c4 str r4, [r0, #12] 95e6: 6105 str r5, [r0, #16] 95e8: 6146 str r6, [r0, #20] 95ea: 6187 str r7, [r0, #24] 95ec: 4641 mov r1, r8 95ee: 61c1 str r1, [r0, #28] 95f0: 4649 mov r1, r9 95f2: 6201 str r1, [r0, #32] 95f4: 4651 mov r1, sl 95f6: 6241 str r1, [r0, #36] @ 0x24 95f8: 4659 mov r1, fp 95fa: 6281 str r1, [r0, #40] @ 0x28 95fc: 4669 mov r1, sp 95fe: 62c1 str r1, [r0, #44] @ 0x2c 9600: 4671 mov r1, lr 9602: 6081 str r1, [r0, #8] 9604: e7de b.n 95c4 <nlr_push_tail> [3]: https://www.openwall.com/lists/musl/2020/09/25/4 Signed-off-by: J. Neuschäfer <j.ne@posteo.net>		2024-04-25 16:06:28 +10:00
..
argcheck.c	…
asmarm.c	py/asm: Add ASM_NOT_REG and ASM_NEG_REG macros for unary ops.	2024-03-19 10:31:36 +11:00
asmarm.h	py/asm: Add ASM_NOT_REG and ASM_NEG_REG macros for unary ops.	2024-03-19 10:31:36 +11:00
asmbase.c	…
asmbase.h	…
asmthumb.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
asmthumb.h	py/asm: Add ASM_NOT_REG and ASM_NEG_REG macros for unary ops.	2024-03-19 10:31:36 +11:00
asmx64.c	py/asm: Add ASM_NOT_REG and ASM_NEG_REG macros for unary ops.	2024-03-19 10:31:36 +11:00
asmx64.h	py/asm: Add ASM_NOT_REG and ASM_NEG_REG macros for unary ops.	2024-03-19 10:31:36 +11:00
asmx86.c	py/asm: Add ASM_NOT_REG and ASM_NEG_REG macros for unary ops.	2024-03-19 10:31:36 +11:00
asmx86.h	py/asm: Add ASM_NOT_REG and ASM_NEG_REG macros for unary ops.	2024-03-19 10:31:36 +11:00
asmxtensa.c	py/asmxtensa: Optimise asm_xtensa_mov_reg_i32_optimised() for tiny ints.	2024-03-19 10:31:36 +11:00
asmxtensa.h	py/asmxtensa: Optimise asm_xtensa_mov_reg_i32_optimised() for tiny ints.	2024-03-19 10:31:36 +11:00
bc.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
bc.h	py/emitglue: Include fun_data_len in mp_raw_code_t only when saving.	2024-02-16 14:17:01 +11:00
bc0.h	…
binary.c	py/binary: Support half-float 'e' format in struct pack/unpack.	2024-03-20 14:13:49 +11:00
binary.h	…
builtin.h	…
builtinevex.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
builtinhelp.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
builtinimport.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
compile.c	py/compile: Add option to allow compiling top-level await.	2024-03-22 13:05:25 +11:00
compile.h	py/compile: Add option to allow compiling top-level await.	2024-03-22 13:05:25 +11:00
dynruntime.h	py/dynruntime: Add mp_binary_get_size/get_val_array/set_val_array.	2024-03-28 16:18:09 +11:00
dynruntime.mk	…
emit.h	…
emitbc.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
emitcommon.c	…
emitglue.c	py/emitglue: Make mp_emit_glue_assign_native's fun_data arg a const ptr.	2024-02-22 11:27:33 +11:00
emitglue.h	py/emitglue: Add explicit cast of proto_fun to uint8_t pointer.	2024-03-04 10:27:07 +11:00
emitinlinethumb.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
emitinlinextensa.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
emitnarm.c	…
emitnative.c	py/emitnative: Implement viper unary ops positive, negative and invert.	2024-03-19 10:31:36 +11:00
emitnthumb.c	…
emitnx64.c	…
emitnx86.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
emitnxtensa.c	…
emitnxtensawin.c	…
formatfloat.c	…
formatfloat.h	…
frozenmod.c	…
frozenmod.h	…
gc.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
gc.h	…
grammar.h	…
lexer.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
lexer.h	…
make_root_pointers.py	…
makecompresseddata.py	…
makemoduledefs.py	…
makeqstrdata.py	py/makeqstrdata.py: Ensure that scope names get low qstr values.	2024-03-26 22:52:25 +11:00
makeqstrdefs.py	py/makeqstrdefs.py: Stop generating temporary intermediate file.	2023-12-14 22:55:08 -08:00
makeversionhdr.py	py/makeversionhdr.py: Reinstate MICROPY_GIT_HASH in mpversion.h.	2024-02-19 23:36:25 +11:00
malloc.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
map.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
misc.h	py/misc: Remove m_new_obj[_var]_with_finaliser macros.	2024-02-20 10:33:09 +11:00
mkenv.mk	…
mkrules.cmake	py/mkrules.mk: List hash files as byproducts.	2023-12-15 15:48:07 +11:00
mkrules.mk	ports: Fix handling of paths containing spaces in Makefiles.	2024-01-24 10:43:18 +11:00
modarray.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
modbuiltins.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
modcmath.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
modcollections.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
moderrno.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
modgc.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
modio.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
modmath.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
modmicropython.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
modstruct.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
modsys.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
modthread.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
mpconfig.h	py/nlrthumb: Make non-Thumb2 long-jump workaround opt-in.	2024-04-25 16:06:28 +10:00
mperrno.h	…
mphal.h	ports: Fix sys.stdout.buffer.write() return value.	2023-12-22 10:32:46 +11:00
mpprint.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
mpprint.h	…
mpstate.c	…
mpstate.h	py/mpstate: Don't declare mp_thread_get_state().	2024-02-29 13:33:51 +11:00
mpthread.h	…
mpz.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
mpz.h	…
nativeglue.c	py/dynruntime: Add mp_binary_get_size/get_val_array/set_val_array.	2024-03-28 16:18:09 +11:00
nativeglue.h	py/dynruntime: Add mp_binary_get_size/get_val_array/set_val_array.	2024-03-28 16:18:09 +11:00
nlr.c	…
nlr.h	…
nlraarch64.c	py/nlr: Add "memory" to asm clobbers list in nlr_jump.	2024-03-25 11:52:26 +11:00
nlrmips.c	py/nlr: Add "memory" to asm clobbers list in nlr_jump.	2024-03-25 11:52:26 +11:00
nlrpowerpc.c	py/nlr: Add "memory" to asm clobbers list in nlr_jump.	2024-03-25 11:52:26 +11:00
nlrsetjmp.c	…
nlrthumb.c	py/nlrthumb: Make non-Thumb2 long-jump workaround opt-in.	2024-04-25 16:06:28 +10:00
nlrx64.c	py/nlr: Add "memory" to asm clobbers list in nlr_jump.	2024-03-25 11:52:26 +11:00
nlrx86.c	py/nlr: Add "memory" to asm clobbers list in nlr_jump.	2024-03-25 11:52:26 +11:00
nlrxtensa.c	py/nlr: Add "memory" to asm clobbers list in nlr_jump.	2024-03-25 11:52:26 +11:00
obj.c	py/obj: Introduce mp_obj_malloc_with_finaliser to allocate and set type.	2024-02-20 10:32:51 +11:00
obj.h	py/obj: Fix initialiser order in MP_DEFINE_CONST_OBJ_TYPE_NARGS_ macros.	2024-04-22 11:10:23 +10:00
objarray.c	py/objarray: Fix use-after-free if extending a bytearray from itself.	2024-04-22 11:50:52 +10:00
objarray.h	…
objattrtuple.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objbool.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objboundmeth.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objcell.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objclosure.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objcomplex.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objdeque.c	py/objdeque: Expand implementation to be doubly-ended and support iter.	2024-03-18 14:10:14 +11:00
objdict.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objenumerate.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objexcept.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objexcept.h	…
objfilter.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objfloat.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objfun.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objfun.h	py/objfun: Fix C++ compatibility with casting in inline functions.	2024-04-22 10:34:01 +10:00
objgenerator.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objgenerator.h	…
objgetitemiter.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objint.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objint.h	…
objint_longlong.c	…
objint_mpz.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objlist.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objlist.h	…
objmap.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objmodule.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objmodule.h	…
objnamedtuple.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objnamedtuple.h	…
objnone.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objobject.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objpolyiter.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objproperty.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objrange.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objreversed.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objset.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objsingleton.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objslice.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objstr.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objstr.h	py/objstr: Add a macro to define a bytes object at compile time.	2024-03-15 13:37:31 +11:00
objstringio.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objstringio.h	…
objstrunicode.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objtuple.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
objtuple.h	…
objtype.c	py/makeqstrdata.py: Ensure that scope names get low qstr values.	2024-03-26 22:52:25 +11:00
objtype.h	…
objzip.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
opmethods.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
pairheap.c	…
pairheap.h	…
parse.c	py/parse: Zero out dangling parse tree pointer to fix potential GC leak.	2024-03-22 10:49:20 +11:00
parse.h	…
parsenum.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
parsenum.h	…
parsenumbase.c	…
parsenumbase.h	…
persistentcode.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
persistentcode.h	py/persistentcode: Bump .mpy sub-version to 6.3.	2024-03-28 16:18:26 +11:00
profile.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
profile.h	…
py.cmake	…
py.mk	py/py.mk: Remove extra build dir created for frozen_content.	2024-01-17 08:14:15 +11:00
pystack.c	…
pystack.h	…
qstr.c	py/makeqstrdata.py: Ensure that scope names get low qstr values.	2024-03-26 22:52:25 +11:00
qstr.h	py/qstr: Add support for MICROPY_QSTR_BYTES_IN_HASH=0.	2024-01-25 16:38:17 +11:00
qstrdefs.h	…
reader.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
reader.h	…
repl.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
repl.h	…
ringbuf.c	…
ringbuf.h	…
runtime.c	extmod/machine_usb_device: Add support for Python USB devices.	2024-03-15 14:22:11 +11:00
runtime.h	py/modthread: Move thread state initialisation to shared function.	2024-02-29 14:28:58 +01:00
runtime0.h	py/emitglue: Simplify mp_raw_code_t's kind and scope_flags members.	2024-02-16 12:48:02 +11:00
runtime_utils.c	…
scheduler.c	…
scope.c	py/makeqstrdata.py: Ensure that scope names get low qstr values.	2024-03-26 22:52:25 +11:00
scope.h	py/emitglue: Include fun_data_len in mp_raw_code_t only when saving.	2024-02-16 14:17:01 +11:00
sequence.c	…
showbc.c	py/emitglue: Include fun_data_len in mp_raw_code_t only when saving.	2024-02-16 14:17:01 +11:00
smallint.c	…
smallint.h	…
stackctrl.c	…
stackctrl.h	…
stream.c	py/stream: Factor stream implementations.	2024-03-15 18:11:28 +11:00
stream.h	py/stream: Factor stream implementations.	2024-03-15 18:11:28 +11:00
unicode.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
unicode.h	…
usermod.cmake	…
vm.c	py/emitglue: Introduce mp_proto_fun_t as a more general mp_raw_code_t.	2024-02-16 14:17:01 +11:00
vmentrytable.h	…
vstr.c	all: Remove the "STATIC" macro and just use "static" instead.	2024-03-07 14:20:42 +11:00
warning.c	…