arch/s390/tools/gcc-thunk-extern.sh

File Facts

System

Linux kernel

Corpus path

arch/s390/tools/gcc-thunk-extern.sh

Extension

.sh

Size

553 bytes

Lines

25

Domain

Architecture Layer

Bucket

arch/s390

Inferred role

Architecture Layer: arch/s390

Status

atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• function put_page

Annotated Snippet

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# Borrowed from gcc: gcc/testsuite/gcc.target/s390/nobp-section-type-conflict.c
# Checks that we don't get error: section type conflict with ‘put_page’.

cat << "END" | $@ -x c - -fno-PIE -march=z10 -mindirect-branch=thunk-extern -mfunction-return=thunk-extern -mindirect-branch-table -O2 -c -o /dev/null
int a;
int b (void);
void c (int);

static void
put_page (void)
{
  if (b ())
    c (a);
}

__attribute__ ((__section__ (".init.text"), __cold__)) void
d (void)
{
  put_page ();
  put_page ();
}
END

Annotation

• Detected declarations: `function put_page`.
• Atlas domain: Architecture Layer / arch/s390.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.