GH-126910: add test for manual frame unwinding

[diegorusso]

Add a test that unwinds the stack using frame pointers. We test on any platform that frame pointers are enable (the others will be skipped). It tests with and without the JIT.

Output with PYTHON_JIT=0

#00 0xbcb53b0332f0 -> python
#01 0xbcb53b1c42b8 -> python
#02 0xbcb53b1ce4b8 -> python
#03 0xbcb53b1d758c -> python
#04 0xbcb53b0332f0 -> python
#05 0xbcb53b1c4774 -> python
#06 0xbcb53b1cfaec -> python
...
#68 0xbe2cbdec495c -> python
#69 0xeaad695b259c -> other
#70 0x60eaad695b267c -> other
#71 0x6be2cbdbc63f0 -> other
{"length": 53, "python_frames": 50, "jit_frames": 0, "other_frames": 3, "jit_code_ranges": 0, "jit_backend": "jit"}

Output with PYTHON_JIT=1

JIT ranges:
0xeaad6985c000-0xeaad6985e000
#00 0xbe2cbdc332f0 -> python
#01 0xbe2cbddc42b8 -> python
#02 0xbe2cbddce4b8 -> python
#03 0xbe2cbddd758c -> python
#04 0xbe2cbdc332f0 -> python
#05 0xbe2cbddc4774 -> python
#06 0xeaad6985c898 -> jit
...
#61 0xeaad6985b050 -> jit
#62 0xbe2cbddd42a4 -> python
#63 0xbe2cbddd72d4 -> python
#64 0xbe2cbde90d3c -> python
#65 0xbe2cbde910d0 -> python
#66 0xbe2cbde93490 -> python
#67 0xbe2cbdec3d30 -> python
#68 0xbe2cbdec495c -> python
#69 0xeaad695b259c -> other
#70 0x60eaad695b267c -> other
#71 0x6be2cbdbc63f0 -> other
{"length": 72, "python_frames": 49, "jit_frames": 20, "other_frames": 3, "jit_code_ranges": 1, "jit_backend": "jit"}

The core of the test has been taken from @pablogsal repository https://github.com/pablogsal/cpython-unwind

• Issue: Supporting stack unwinding in the JIT compiler #126910

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @diegorusso for commit 5d53a15 🤖

Results will be shown at:

https://buildbot.python.org/all/#/grid?branch=refs%2Fpull%2F144137%2Fmerge

If you want to schedule another build, you need to add the 🔨 test-with-buildbots label again.

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @diegorusso for commit c179848 🤖

Results will be shown at:

https://buildbot.python.org/all/#/grid?branch=refs%2Fpull%2F144137%2Fmerge

If you want to schedule another build, you need to add the 🔨 test-with-buildbots label again.

[pablogsal]

Do you get a warning here for interp being unused? I would have expected the compiler to complain for platforms without HAVE_DLADDR or WASI 🤔

[diegorusso]

I tried compiling the branch above by removing code and I didn't see any warning even when passing -Wunused-parameter

[diegorusso]

but I spotted a double branch in the ifdef logic. Wasi can fallback in the final else :)

[pablogsal]

LGTM! I just left a bunch of minor nits. Feel free to land without those

[pablogsal]

Very cool and great work @diegorusso 💯

[diegorusso]

LGTM! I just left a bunch of minor nits. Feel free to land without those

I've addressed all your reviews. Please have a look.

[pablogsal]

LGTM Great work!