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Path B pivot + Phase 0-3 closed with first baseline numbers

Browse Source 
This is a from-scratch initial commit on a fresh .git. The original
scaffold commit (7510b56) and the earlier session's working-tree
docs were lost in a 2026-05-18 10:25 working-tree wipe; the corrupted
.git is preserved at .git-broken-2026-05-18/ (gitignored) for
forensic inspection.

Scope re-anchored from Path A (custom VPU firmware on VC7 scalar
cores; blocked by BCM2712 silicon-RoT mask-ROM signature check)
to Path B (QPU compute kernels via Mesa v3d / Vulkan compute or
direct DRM, on stock signed Pi 5 / CM5). See README.md and
docs/phase0.md for the substrate audit that closed Path A.

Phases closed:
  Phase 0 — substrate audit; Path A blocked, Path B open;
            codec-back-end-fits-QPU finding (docs/phase0.md)
  Phase 1 — first kernel locked (VP9 / AV1 8x8 inverse DCT) with
            publish-before-measure R = M2/M3 decision rules
            (docs/phase1.md)
  Phase 2 — reference impls mapped; FFmpeg n7.1.3 source vendored
            under external/ffmpeg-snapshot/ (PROVENANCE.md pins
            commit f46e514 + per-file SHA-256s) (docs/phase2.md)
  Phase 3 — real baseline measurements on hertz (docs/phase3.md):
              M1 bit-exact            100.0000 % (10000/10000)
              M3 NEON IDCT8 single    8.171 Mblock/s (122.4 ns/block)
              M5a empty Vulkan submit 22.66 us
              M5b 1-WG noop dispatch  55.60 us
              M5 delta                32.95 us/dispatch
            => per-dispatch overhead is ~455x per-NEON-block cost;
               Phase 4 must batch at frame level or close to it.

Build harness in place: CMakeLists.txt + tests/{bench_neon_idct.c,
vp9_idct8_ref.c, bench_vulkan_dispatch.c, shaders/noop.comp} +
external/ffmpeg-snapshot/config.h shim (7 defines + EXTERN_ASM).
Builds clean on Debian Trixie aarch64 with cmake 3.31, ninja 1.12,
libvulkan-dev 1.4.309, glslang-tools 15.1.0. Vendored FFmpeg .S
assembles via the config.h shim.

Next: Phase 4 (plan first QPU IDCT kernel under the M5 batching
constraint) -> Phase 5 second-model review -> Phase 6 implement.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Markus Fritsche
2026-05-18 11:30:12 +00:00
commit dcbbc77038
22 changed files with 9030 additions and 0 deletions
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external/ffmpeg-snapshot/COPYING.LGPLv2.1
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That's all there is to it!
external/ffmpeg-snapshot/PROVENANCE.md
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# FFmpeg source snapshot
Verbatim subset of FFmpeg source pinned for use as reference
implementations of the VP9 8×8 inverse DCT (Phase 1 target of
`daedalus-fourier`). See `../../docs/phase2.md §2` and `§5` for
the rationale.
## Upstream pin
- **Repository**: https://github.com/FFmpeg/FFmpeg
- **Tag**: `n7.1.3` (matches `libavcodec61 8:7.1.3-0+deb13u1+rpt1`
shipping in Debian Trixie on the dev host `hertz`)
- **Annotated tag object**: `0a9a757e96fdf053697084bbd1f620edeac9d084`
- **Commit object (tag target)**: `f46e514491172d15bd74b4abb1814cd2f05a763e`
- **Snapshot fetched**: 2026-05-18 (UTC), via
`https://raw.githubusercontent.com/FFmpeg/FFmpeg/n7.1.3/<path>`
## Files in this snapshot
All files are byte-for-byte copies of the upstream source at the
tagged commit, no modifications.
| Path | Lines | Bytes | SHA-256 |
|---|---|---|---|
| `libavcodec/vp9dsp_template.c` | 2578 | 89045 | `41b21f667a6c497b620aa1637d8269badc45d1ac7e621d694441c5bf39356e4f` |
| `libavcodec/aarch64/vp9itxfm_neon.S` | 1580 | 63534 | `82ee3ceed4735c63576bafdcee28e2215652743ade55a9eab46a16d9530369f6` |
| `libavcodec/aarch64/neon.S` | 173 | 7496 | `72d36ce6c3fcc5e53de869cfe10fda16225ebe580c32891bccc240a30a85a538` |
| `libavutil/aarch64/asm.S` | 260 | 8069 | `c0d03143b1bc5a9e358222d08d2d449d595271844fe7a3dc23bffb91abe8b0e3` |
| `COPYING.LGPLv2.1` | 502 | — | `b634ab5640e258563c536e658cad87080553df6f34f62269a21d554844e58bfe` |
Verify with:
```sh
( cd external/ffmpeg-snapshot && sha256sum -c <<'EOF'
41b21f667a6c497b620aa1637d8269badc45d1ac7e621d694441c5bf39356e4f libavcodec/vp9dsp_template.c
82ee3ceed4735c63576bafdcee28e2215652743ade55a9eab46a16d9530369f6 libavcodec/aarch64/vp9itxfm_neon.S
72d36ce6c3fcc5e53de869cfe10fda16225ebe580c32891bccc240a30a85a538 libavcodec/aarch64/neon.S
c0d03143b1bc5a9e358222d08d2d449d595271844fe7a3dc23bffb91abe8b0e3 libavutil/aarch64/asm.S
b634ab5640e258563c536e658cad87080553df6f34f62269a21d554844e58bfe COPYING.LGPLv2.1
EOF
)
```
## License
LGPL-2.1-or-later. See `COPYING.LGPLv2.1`. Original copyright
holders include the FFmpeg authors and Google Inc. (2016) for
the aarch64 NEON paths. The snapshot inherits FFmpeg's license
in full.
## Why each file is in this snapshot
- `libavcodec/vp9dsp_template.c` — contains `idct_idct_8x8_add_c`,
the bit-exact C reference for the Phase 1 kernel under test (M1).
- `libavcodec/aarch64/vp9itxfm_neon.S` — contains
`ff_vp9_idct_idct_8x8_add_neon`, the NEON throughput baseline
(M3). Also defines `idct8`, `dmbutterfly0`, `dmbutterfly`,
`dmbutterfly_l`, `butterfly_8h`, and the `idct_coeffs` constant
table.
- `libavcodec/aarch64/neon.S` — defines `transpose_8x8H` used by
`vp9itxfm_neon.S`.
- `libavutil/aarch64/asm.S` — defines `function`, `endfunc`,
`movrel`, `const`, `endconst`, and other assembly preamble
macros required to assemble the above NEON files.
## Re-vendoring procedure
If the upstream pin needs to change (e.g., hertz updates to a
newer libavcodec):
```sh
TAG=nX.Y.Z
BASE=https://raw.githubusercontent.com/FFmpeg/FFmpeg/$TAG
cd external/ffmpeg-snapshot
for f in libavcodec/vp9dsp_template.c \
libavcodec/aarch64/vp9itxfm_neon.S \
libavcodec/aarch64/neon.S \
libavutil/aarch64/asm.S \
COPYING.LGPLv2.1; do
curl -sSf -o "$f" "$BASE/$f"
done
sha256sum libavcodec/vp9dsp_template.c \
libavcodec/aarch64/vp9itxfm_neon.S \
libavcodec/aarch64/neon.S \
libavutil/aarch64/asm.S \
COPYING.LGPLv2.1
# update this PROVENANCE.md with the new tag, commit hash, and hashes
```
After re-vendoring, re-run the bit-exact gate (M1) and throughput
baseline (M3) — both can shift across FFmpeg versions even when
the VP9 spec doesn't change (e.g., NEON micro-optimizations).
external/ffmpeg-snapshot/config.h
Vendored
+27
View File
@@ -0,0 +1,27 @@
/*
* Minimal config.h shim for assembling the vendored FFmpeg .S files
* outside the FFmpeg build tree.
*
* The vendored .S files (vp9itxfm_neon.S, neon.S, asm.S) reference
* exactly 7 preprocessor symbols, enumerated below. Values target
* aarch64-Linux with modern binutils (≥2.41) — matches the Debian
* Trixie environment on hertz (the project's dev host).
*
* See ../../docs/phase2.md §5 for the source-copy rationale and
* PROVENANCE.md for the upstream pin (FFmpeg n7.1.3).
*/
#pragma once
#define HAVE_AS_FUNC 1
#define HAVE_AS_ARCH_DIRECTIVE 1
#define AS_ARCH_LEVEL armv8-a
#define HAVE_AS_ARCHEXT_DOTPROD_DIRECTIVE 1
#define HAVE_AS_ARCHEXT_I8MM_DIRECTIVE 1
#define HAVE_SECTION_DATA_REL_RO 1
#define CONFIG_PIC 1
/* Symbol prefix for exported labels. On ELF/Linux this is empty
* (no leading underscore). FFmpeg's configure script normally
* defines this in the generated config.h; we replicate the
* Linux-target value here. */
#define EXTERN_ASM
external/ffmpeg-snapshot/libavcodec/aarch64/neon.S
Vendored
+173
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@@ -0,0 +1,173 @@
/*
* This file is part of FFmpeg.
*
* Copyright (c) 2023 J. Dekker <jdek@itanimul.li>
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
.macro clip min, max, regs:vararg
.irp x, \regs
smax \x, \x, \min
.endr
.irp x, \regs
smin \x, \x, \max
.endr
.endm
.macro transpose_8x8B r0, r1, r2, r3, r4, r5, r6, r7, r8, r9
trn1 \r8\().8b, \r0\().8b, \r1\().8b
trn2 \r9\().8b, \r0\().8b, \r1\().8b
trn1 \r1\().8b, \r2\().8b, \r3\().8b
trn2 \r3\().8b, \r2\().8b, \r3\().8b
trn1 \r0\().8b, \r4\().8b, \r5\().8b
trn2 \r5\().8b, \r4\().8b, \r5\().8b
trn1 \r2\().8b, \r6\().8b, \r7\().8b
trn2 \r7\().8b, \r6\().8b, \r7\().8b
trn1 \r4\().4h, \r0\().4h, \r2\().4h
trn2 \r2\().4h, \r0\().4h, \r2\().4h
trn1 \r6\().4h, \r5\().4h, \r7\().4h
trn2 \r7\().4h, \r5\().4h, \r7\().4h
trn1 \r5\().4h, \r9\().4h, \r3\().4h
trn2 \r9\().4h, \r9\().4h, \r3\().4h
trn1 \r3\().4h, \r8\().4h, \r1\().4h
trn2 \r8\().4h, \r8\().4h, \r1\().4h
trn1 \r0\().2s, \r3\().2s, \r4\().2s
trn2 \r4\().2s, \r3\().2s, \r4\().2s
trn1 \r1\().2s, \r5\().2s, \r6\().2s
trn2 \r5\().2s, \r5\().2s, \r6\().2s
trn2 \r6\().2s, \r8\().2s, \r2\().2s
trn1 \r2\().2s, \r8\().2s, \r2\().2s
trn1 \r3\().2s, \r9\().2s, \r7\().2s
trn2 \r7\().2s, \r9\().2s, \r7\().2s
.endm
.macro transpose_8x16B r0, r1, r2, r3, r4, r5, r6, r7, t0, t1
trn1 \t0\().16b, \r0\().16b, \r1\().16b
trn2 \t1\().16b, \r0\().16b, \r1\().16b
trn1 \r1\().16b, \r2\().16b, \r3\().16b
trn2 \r3\().16b, \r2\().16b, \r3\().16b
trn1 \r0\().16b, \r4\().16b, \r5\().16b
trn2 \r5\().16b, \r4\().16b, \r5\().16b
trn1 \r2\().16b, \r6\().16b, \r7\().16b
trn2 \r7\().16b, \r6\().16b, \r7\().16b
trn1 \r4\().8h, \r0\().8h, \r2\().8h
trn2 \r2\().8h, \r0\().8h, \r2\().8h
trn1 \r6\().8h, \r5\().8h, \r7\().8h
trn2 \r7\().8h, \r5\().8h, \r7\().8h
trn1 \r5\().8h, \t1\().8h, \r3\().8h
trn2 \t1\().8h, \t1\().8h, \r3\().8h
trn1 \r3\().8h, \t0\().8h, \r1\().8h
trn2 \t0\().8h, \t0\().8h, \r1\().8h
trn1 \r0\().4s, \r3\().4s, \r4\().4s
trn2 \r4\().4s, \r3\().4s, \r4\().4s
trn1 \r1\().4s, \r5\().4s, \r6\().4s
trn2 \r5\().4s, \r5\().4s, \r6\().4s
trn2 \r6\().4s, \t0\().4s, \r2\().4s
trn1 \r2\().4s, \t0\().4s, \r2\().4s
trn1 \r3\().4s, \t1\().4s, \r7\().4s
trn2 \r7\().4s, \t1\().4s, \r7\().4s
.endm
.macro transpose_4x16B r0, r1, r2, r3, t4, t5, t6, t7
trn1 \t4\().16b, \r0\().16b, \r1\().16b
trn2 \t5\().16b, \r0\().16b, \r1\().16b
trn1 \t6\().16b, \r2\().16b, \r3\().16b
trn2 \t7\().16b, \r2\().16b, \r3\().16b
trn1 \r0\().8h, \t4\().8h, \t6\().8h
trn2 \r2\().8h, \t4\().8h, \t6\().8h
trn1 \r1\().8h, \t5\().8h, \t7\().8h
trn2 \r3\().8h, \t5\().8h, \t7\().8h
.endm
.macro transpose_4x8B r0, r1, r2, r3, t4, t5, t6, t7
trn1 \t4\().8b, \r0\().8b, \r1\().8b
trn2 \t5\().8b, \r0\().8b, \r1\().8b
trn1 \t6\().8b, \r2\().8b, \r3\().8b
trn2 \t7\().8b, \r2\().8b, \r3\().8b
trn1 \r0\().4h, \t4\().4h, \t6\().4h
trn2 \r2\().4h, \t4\().4h, \t6\().4h
trn1 \r1\().4h, \t5\().4h, \t7\().4h
trn2 \r3\().4h, \t5\().4h, \t7\().4h
.endm
.macro transpose_4x4H r0, r1, r2, r3, r4, r5, r6, r7
trn1 \r4\().4h, \r0\().4h, \r1\().4h
trn2 \r5\().4h, \r0\().4h, \r1\().4h
trn1 \r6\().4h, \r2\().4h, \r3\().4h
trn2 \r7\().4h, \r2\().4h, \r3\().4h
trn1 \r0\().2s, \r4\().2s, \r6\().2s
trn2 \r2\().2s, \r4\().2s, \r6\().2s
trn1 \r1\().2s, \r5\().2s, \r7\().2s
trn2 \r3\().2s, \r5\().2s, \r7\().2s
.endm
.macro transpose_4x8H r0, r1, r2, r3, t4, t5, t6, t7
trn1 \t4\().8h, \r0\().8h, \r1\().8h
trn2 \t5\().8h, \r0\().8h, \r1\().8h
trn1 \t6\().8h, \r2\().8h, \r3\().8h
trn2 \t7\().8h, \r2\().8h, \r3\().8h
trn1 \r0\().4s, \t4\().4s, \t6\().4s
trn2 \r2\().4s, \t4\().4s, \t6\().4s
trn1 \r1\().4s, \t5\().4s, \t7\().4s
trn2 \r3\().4s, \t5\().4s, \t7\().4s
.endm
.macro transpose_8x8H r0, r1, r2, r3, r4, r5, r6, r7, r8, r9
trn1 \r8\().8h, \r0\().8h, \r1\().8h
trn2 \r9\().8h, \r0\().8h, \r1\().8h
trn1 \r1\().8h, \r2\().8h, \r3\().8h
trn2 \r3\().8h, \r2\().8h, \r3\().8h
trn1 \r0\().8h, \r4\().8h, \r5\().8h
trn2 \r5\().8h, \r4\().8h, \r5\().8h
trn1 \r2\().8h, \r6\().8h, \r7\().8h
trn2 \r7\().8h, \r6\().8h, \r7\().8h
trn1 \r4\().4s, \r0\().4s, \r2\().4s
trn2 \r2\().4s, \r0\().4s, \r2\().4s
trn1 \r6\().4s, \r5\().4s, \r7\().4s
trn2 \r7\().4s, \r5\().4s, \r7\().4s
trn1 \r5\().4s, \r9\().4s, \r3\().4s
trn2 \r9\().4s, \r9\().4s, \r3\().4s
trn1 \r3\().4s, \r8\().4s, \r1\().4s
trn2 \r8\().4s, \r8\().4s, \r1\().4s
trn1 \r0\().2d, \r3\().2d, \r4\().2d
trn2 \r4\().2d, \r3\().2d, \r4\().2d
trn1 \r1\().2d, \r5\().2d, \r6\().2d
trn2 \r5\().2d, \r5\().2d, \r6\().2d
trn2 \r6\().2d, \r8\().2d, \r2\().2d
trn1 \r2\().2d, \r8\().2d, \r2\().2d
trn1 \r3\().2d, \r9\().2d, \r7\().2d
trn2 \r7\().2d, \r9\().2d, \r7\().2d
.endm
external/ffmpeg-snapshot/libavcodec/aarch64/vp9itxfm_neon.S
Vendored
+1580
View File
File diff suppressed because it is too large Load Diff
external/ffmpeg-snapshot/libavcodec/vp9dsp_template.c
Vendored
+2578
View File
File diff suppressed because it is too large Load Diff
external/ffmpeg-snapshot/libavutil/aarch64/asm.S
Vendored
+260
View File
@@ -0,0 +1,260 @@
/*
* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#ifdef __ELF__
# define ELF
#else
# define ELF #
#endif
#if HAVE_AS_FUNC
# define FUNC
#else
# define FUNC #
#endif
#ifndef __has_feature
# define __has_feature(x) 0
#endif
#if HAVE_AS_ARCH_DIRECTIVE
.arch AS_ARCH_LEVEL
#endif
#if HAVE_AS_ARCHEXT_DOTPROD_DIRECTIVE
#define ENABLE_DOTPROD .arch_extension dotprod
#define DISABLE_DOTPROD .arch_extension nodotprod
#else
#define ENABLE_DOTPROD
#define DISABLE_DOTPROD
#endif
#if HAVE_AS_ARCHEXT_I8MM_DIRECTIVE
#define ENABLE_I8MM .arch_extension i8mm
#define DISABLE_I8MM .arch_extension noi8mm
#else
#define ENABLE_I8MM
#define DISABLE_I8MM
#endif
DISABLE_DOTPROD
DISABLE_I8MM
/* Support macros for
* - Armv8.3-A Pointer Authentication and
* - Armv8.5-A Branch Target Identification
* features which require emitting a .note.gnu.property section with the
* appropriate architecture-dependent feature bits set.
*
* |AARCH64_SIGN_LINK_REGISTER| and |AARCH64_VALIDATE_LINK_REGISTER| expand to
* PACIxSP and AUTIxSP, respectively. |AARCH64_SIGN_LINK_REGISTER| should be
* used immediately before saving the LR register (x30) to the stack.
* |AARCH64_VALIDATE_LINK_REGISTER| should be used immediately after restoring
* it. Note |AARCH64_SIGN_LINK_REGISTER|'s modifications to LR must be undone
* with |AARCH64_VALIDATE_LINK_REGISTER| before RET. The SP register must also
* have the same value at the two points. For example:
*
* .global f
* f:
* AARCH64_SIGN_LINK_REGISTER
* stp x29, x30, [sp, #-96]!
* mov x29, sp
* ...
* ldp x29, x30, [sp], #96
* AARCH64_VALIDATE_LINK_REGISTER
* ret
*
* |AARCH64_VALID_CALL_TARGET| expands to BTI 'c'. Either it, or
* |AARCH64_SIGN_LINK_REGISTER|, must be used at every point that may be an
* indirect call target. In particular, all symbols exported from a file must
* begin with one of these macros. For example, a leaf function that does not
* save LR can instead use |AARCH64_VALID_CALL_TARGET|:
*
* .globl return_zero
* return_zero:
* AARCH64_VALID_CALL_TARGET
* mov x0, #0
* ret
*
* A non-leaf function which does not immediately save LR may need both macros
* because |AARCH64_SIGN_LINK_REGISTER| appears late. For example, the function
* may jump to an alternate implementation before setting up the stack:
*
* .globl with_early_jump
* with_early_jump:
* AARCH64_VALID_CALL_TARGET
* cmp x0, #128
* b.lt .Lwith_early_jump_128
* AARCH64_SIGN_LINK_REGISTER
* stp x29, x30, [sp, #-96]!
* mov x29, sp
* ...
* ldp x29, x30, [sp], #96
* AARCH64_VALIDATE_LINK_REGISTER
* ret
*
* .Lwith_early_jump_128:
* ...
* ret
*
* These annotations are only required with indirect calls. Private symbols that
* are only the target of direct calls do not require annotations. Also note
* that |AARCH64_VALID_CALL_TARGET| is only valid for indirect calls (BLR), not
* indirect jumps (BR). Indirect jumps in assembly are supported through
* |AARCH64_VALID_JUMP_TARGET|. Landing Pads which shall serve for jumps and
* calls can be created using |AARCH64_VALID_JUMP_CALL_TARGET|.
*
* Although not necessary, it is safe to use these macros in 32-bit ARM
* assembly. This may be used to simplify dual 32-bit and 64-bit files.
*
* References:
* - "ELF for the Arm® 64-bit Architecture"
* https: *github.com/ARM-software/abi-aa/blob/master/aaelf64/aaelf64.rst
* - "Providing protection for complex software"
* https://developer.arm.com/architectures/learn-the-architecture/providing-protection-for-complex-software
*/
#if defined(__ARM_FEATURE_BTI_DEFAULT) && (__ARM_FEATURE_BTI_DEFAULT == 1)
# define GNU_PROPERTY_AARCH64_BTI (1 << 0) // Has BTI
# define AARCH64_VALID_CALL_TARGET hint #34 // BTI 'c'
# define AARCH64_VALID_JUMP_TARGET hint #38 // BTI 'j'
#else
# define GNU_PROPERTY_AARCH64_BTI 0 // No BTI
# define AARCH64_VALID_CALL_TARGET
# define AARCH64_VALID_JUMP_TARGET
#endif
#if defined(__ARM_FEATURE_PAC_DEFAULT)
# if ((__ARM_FEATURE_PAC_DEFAULT & (1 << 0)) != 0) // authentication using key A
# define AARCH64_SIGN_LINK_REGISTER paciasp
# define AARCH64_VALIDATE_LINK_REGISTER autiasp
# elif ((__ARM_FEATURE_PAC_DEFAULT & (1 << 1)) != 0) // authentication using key B
# define AARCH64_SIGN_LINK_REGISTER pacibsp
# define AARCH64_VALIDATE_LINK_REGISTER autibsp
# else
# error Pointer authentication defines no valid key!
# endif
# if ((__ARM_FEATURE_PAC_DEFAULT & (1 << 2)) != 0)
# error Authentication of leaf functions is enabled but not supported in FFmpeg!
# endif
# define GNU_PROPERTY_AARCH64_PAC (1 << 1)
#else
# define GNU_PROPERTY_AARCH64_PAC 0
# define AARCH64_SIGN_LINK_REGISTER
# define AARCH64_VALIDATE_LINK_REGISTER
#endif
#if (GNU_PROPERTY_AARCH64_BTI != 0 || GNU_PROPERTY_AARCH64_PAC != 0) && defined(__ELF__)
.pushsection .note.gnu.property, "a"
.balign 8
.long 4
.long 0x10
.long 0x5
.asciz "GNU"
.long 0xc0000000 /* GNU_PROPERTY_AARCH64_FEATURE_1_AND */
.long 4
.long (GNU_PROPERTY_AARCH64_BTI | GNU_PROPERTY_AARCH64_PAC)
.long 0
.popsection
#endif
.macro function name, export=0, align=2
.macro endfunc
ELF .size \name, . - \name
FUNC .endfunc
.purgem endfunc
.endm
.text
.align \align
.if \export
.global EXTERN_ASM\name
ELF .type EXTERN_ASM\name, %function
FUNC .func EXTERN_ASM\name
EXTERN_ASM\name:
AARCH64_VALID_CALL_TARGET
.else
ELF .type \name, %function
FUNC .func \name
\name:
.endif
.endm
.macro const name, align=2, relocate=0
.macro endconst
ELF .size \name, . - \name
.purgem endconst
.endm
#if HAVE_SECTION_DATA_REL_RO
.if \relocate
.section .data.rel.ro
.else
.section .rodata
.endif
#elif defined(_WIN32)
.section .rdata
#elif !defined(__MACH__)
.section .rodata
#else
.const_data
#endif
.align \align
\name:
.endm
.macro movrel rd, val, offset=0
#if CONFIG_PIC && defined(__APPLE__)
.if \offset < 0
adrp \rd, \val@PAGE
add \rd, \rd, \val@PAGEOFF
sub \rd, \rd, -(\offset)
.else
adrp \rd, \val+(\offset)@PAGE
add \rd, \rd, \val+(\offset)@PAGEOFF
.endif
#elif CONFIG_PIC && defined(_WIN32)
.if \offset < 0
adrp \rd, \val
add \rd, \rd, :lo12:\val
sub \rd, \rd, -(\offset)
.else
adrp \rd, \val+(\offset)
add \rd, \rd, :lo12:\val+(\offset)
.endif
#elif CONFIG_PIC
# if __has_feature(hwaddress_sanitizer)
adrp \rd, :pg_hi21_nc:\val+(\offset)
# else
adrp \rd, \val+(\offset)
# endif
add \rd, \rd, :lo12:\val+(\offset)
#else
ldr \rd, =\val+\offset
#endif
.endm
#define GLUE(a, b) a ## b
#define JOIN(a, b) GLUE(a, b)
#define X(s) JOIN(EXTERN_ASM, s)
#define x18 do_not_use_x18
#define w18 do_not_use_w18