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gh-115988: Add missing ARM64 and RISCV filter in lzma module #115989

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gh-115988: Add missing ARM64 and RISCV filter in lzma module #115989

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68979bc
Add missing ARM64 and RISCV filter in lzma module
ivq Feb 27, 2024
3fa0c17
Suppress doc warning "py:const reference target not found"
ivq Feb 28, 2024
c1e166a
Add lzma version
ivq Mar 17, 2024
ea51476
Add ARM64, RISC-V filter test case
ivq Mar 17, 2024
6189ceb
Update lzma doc
ivq Mar 17, 2024
0f6fd63
Add NEWS entry
ivq Mar 17, 2024
9731225
Optimise NEWS
ivq Mar 18, 2024
40e9d34
Move version doc section
ivq Mar 19, 2024
8c922f7
Add WHATSNEW entry
ivq Mar 19, 2024
9cd4cb8
Fix filter chain specs position
ivq Mar 19, 2024
8a85c48
Suppress doc warning
ivq Mar 22, 2024
32725a7
Elide upstream binary data from the test.
gpshead Mar 30, 2024
6d94a08
Clarify the documentation a bit.
gpshead Mar 30, 2024
c62ca63
Clarifying comment, docs accuracy.
gpshead Mar 30, 2024
045aa40
Expose the version as a number.
gpshead Mar 30, 2024
8f49f69
Merge branch 'main' into xz_bcj_filters
gpshead Mar 30, 2024
832335d
minor version explanation tweak.
gpshead Mar 30, 2024
728f286
Adjust the whats new text.
gpshead Mar 30, 2024
61c4adf
NEWS wording and formatting tweak.
gpshead Mar 30, 2024
98adeee
line length
gpshead Mar 30, 2024
449b722
Merge remote-tracking branch 'origin/main' into xz_bcj_filters
ivq Jul 13, 2025
f381ca5
We've missed the 3.13 window
ivq Jul 13, 2025
9f0d4d4
Fix accidentally removed newline when merging remote main
ivq Jul 13, 2025
1a17fd5
Remove unused import
ivq Jul 13, 2025
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2 changes: 2 additions & 0 deletions Doc/library/lzma.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -349,6 +349,8 @@ options. Valid filter IDs are as follows:
* :const:`FILTER_ARMTHUMB`
* :const:`FILTER_POWERPC`
* :const:`FILTER_SPARC`
* :const:`FILTER_ARM64`
* :const:`FILTER_RISCV`

A filter chain can consist of up to 4 filters, and cannot be empty. The last
filter in the chain must be a compression filter, and any other filters must be
Expand Down
1 change: 1 addition & 0 deletions Lib/lzma.py
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Expand Up @@ -13,6 +13,7 @@
"CHECK_ID_MAX", "CHECK_UNKNOWN",
"FILTER_LZMA1", "FILTER_LZMA2", "FILTER_DELTA", "FILTER_X86", "FILTER_IA64",
"FILTER_ARM", "FILTER_ARMTHUMB", "FILTER_POWERPC", "FILTER_SPARC",
"FILTER_ARM64", "FILTER_RISCV",
"FORMAT_AUTO", "FORMAT_XZ", "FORMAT_ALONE", "FORMAT_RAW",
"MF_HC3", "MF_HC4", "MF_BT2", "MF_BT3", "MF_BT4",
"MODE_FAST", "MODE_NORMAL", "PRESET_DEFAULT", "PRESET_EXTREME",
Expand Down
16 changes: 15 additions & 1 deletion Modules/_lzmamodule.c
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Expand Up @@ -24,6 +24,14 @@
#error "The maximum block size accepted by liblzma is SIZE_MAX."
#endif


#ifndef LZMA_FILTER_ARM64
#define LZMA_FILTER_ARM64 LZMA_VLI_C(0x0A)
#endif
#ifndef LZMA_FILTER_RISCV
#define LZMA_FILTER_RISCV LZMA_VLI_C(0x0B)
#endif

/* On success, return value >= 0
On failure, return -1 */
static inline Py_ssize_t
Expand Down Expand Up @@ -372,6 +380,8 @@ lzma_filter_converter(_lzma_state *state, PyObject *spec, void *ptr)
case LZMA_FILTER_ARM:
case LZMA_FILTER_ARMTHUMB:
case LZMA_FILTER_SPARC:
case LZMA_FILTER_ARM64:
case LZMA_FILTER_RISCV:
f->options = parse_filter_spec_bcj(state, spec);
return f->options != NULL;
default:
Expand Down Expand Up @@ -490,7 +500,9 @@ build_filter_spec(const lzma_filter *f)
case LZMA_FILTER_IA64:
case LZMA_FILTER_ARM:
case LZMA_FILTER_ARMTHUMB:
case LZMA_FILTER_SPARC: {
case LZMA_FILTER_SPARC:
case LZMA_FILTER_ARM64:
case LZMA_FILTER_RISCV: {
lzma_options_bcj *options = f->options;
if (options) {
ADD_FIELD(options, start_offset);
Expand Down Expand Up @@ -1551,6 +1563,8 @@ lzma_exec(PyObject *module)
ADD_INT_PREFIX_MACRO(module, FILTER_ARMTHUMB);
ADD_INT_PREFIX_MACRO(module, FILTER_SPARC);
ADD_INT_PREFIX_MACRO(module, FILTER_POWERPC);
ADD_INT_PREFIX_MACRO(module, FILTER_ARM64);
ADD_INT_PREFIX_MACRO(module, FILTER_RISCV);
ADD_INT_PREFIX_MACRO(module, MF_HC3);
ADD_INT_PREFIX_MACRO(module, MF_HC4);
ADD_INT_PREFIX_MACRO(module, MF_BT2);
Expand Down