arch/sparc/kernel/una_asm_64.S
Source file repositories/reference/linux-study-clean/arch/sparc/kernel/una_asm_64.S
File Facts
- System
- Linux kernel
- Corpus path
arch/sparc/kernel/una_asm_64.S- Extension
.S- Size
- 3122 bytes
- Lines
- 148
- Domain
- Architecture Layer
- Bucket
- arch/sparc
- Inferred role
- Architecture Layer: arch/sparc
- 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
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
.text
.globl __do_int_store
__do_int_store:
rd %asi, %o4
wr %o3, 0, %asi
mov %o2, %g3
cmp %o1, 2
be,pn %icc, 2f
cmp %o1, 4
be,pt %icc, 1f
srlx %g3, 24, %g2
srlx %g3, 56, %g1
srlx %g3, 48, %g7
4: stba %g1, [%o0] %asi
srlx %g3, 40, %g1
5: stba %g7, [%o0 + 1] %asi
srlx %g3, 32, %g7
6: stba %g1, [%o0 + 2] %asi
7: stba %g7, [%o0 + 3] %asi
srlx %g3, 16, %g1
8: stba %g2, [%o0 + 4] %asi
srlx %g3, 8, %g7
9: stba %g1, [%o0 + 5] %asi
10: stba %g7, [%o0 + 6] %asi
ba,pt %xcc, 0f
11: stba %g3, [%o0 + 7] %asi
1: srl %g3, 16, %g7
12: stba %g2, [%o0] %asi
srl %g3, 8, %g2
13: stba %g7, [%o0 + 1] %asi
14: stba %g2, [%o0 + 2] %asi
ba,pt %xcc, 0f
15: stba %g3, [%o0 + 3] %asi
2: srl %g3, 8, %g2
16: stba %g2, [%o0] %asi
17: stba %g3, [%o0 + 1] %asi
0:
wr %o4, 0x0, %asi
retl
mov 0, %o0
.size __do_int_store, .-__do_int_store
.section __ex_table,"a"
.word 4b, __retl_efault
.word 5b, __retl_efault
.word 6b, __retl_efault
.word 7b, __retl_efault
.word 8b, __retl_efault
.word 9b, __retl_efault
.word 10b, __retl_efault
.word 11b, __retl_efault
.word 12b, __retl_efault
.word 13b, __retl_efault
.word 14b, __retl_efault
.word 15b, __retl_efault
.word 16b, __retl_efault
.word 17b, __retl_efault
.previous
.globl do_int_load
do_int_load:
rd %asi, %o5
wr %o4, 0, %asi
cmp %o1, 8
bge,pn %icc, 9f
cmp %o1, 4
be,pt %icc, 6f
4: lduba [%o2] %asi, %g2
5: lduba [%o2 + 1] %asi, %g3
Annotation
- Atlas domain: Architecture Layer / arch/sparc.
- 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.