arch/hexagon/lib/udivsi3.S

File Facts

System

Linux kernel

Corpus path

arch/hexagon/lib/udivsi3.S

Extension

.S

Size

938 bytes

Lines

39

Domain

Architecture Layer

Bucket

arch/hexagon

Inferred role

Architecture Layer: arch/hexagon

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

• linux/linkage.h

Detected Declarations

• function Copyright

Annotated Snippet

#include <linux/linkage.h>

SYM_FUNC_START(__hexagon_udivsi3)
        {
                r2 = cl0(r0)
                r3 = cl0(r1)
                r5:4 = combine(#1,#0)
                p0 = cmp.gtu(r1,r0)
        }
        {
                r6 = sub(r3,r2)
                r4 = r1
                r1:0 = combine(r0,r4)
                if (p0) jumpr r31
        }
        {
                r3:2 = vlslw(r5:4,r6)
                loop0(1f,r6)
        }
        .falign
1:
        {
                p0 = cmp.gtu(r2,r1)
                if (!p0.new) r1 = sub(r1,r2)
                if (!p0.new) r0 = add(r0,r3)
                r3:2 = vlsrw(r3:2,#1)
        }:endloop0
        {
                p0 = cmp.gtu(r2,r1)
                if (!p0.new) r0 = add(r0,r3)
                jumpr r31
        }
SYM_FUNC_END(__hexagon_udivsi3)

Annotation

• Immediate include surface: `linux/linkage.h`.
• Detected declarations: `function Copyright`.
• Atlas domain: Architecture Layer / arch/hexagon.
• 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.