arch/powerpc/boot/crtsavres.S
Source file repositories/reference/linux-study-clean/arch/powerpc/boot/crtsavres.S
File Facts
- System
- Linux kernel
- Corpus path
arch/powerpc/boot/crtsavres.S- Extension
.S- Size
- 6125 bytes
- Lines
- 234
- Domain
- Architecture Layer
- Bucket
- arch/powerpc
- Inferred role
- Architecture Layer: arch/powerpc
- 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
#ifdef __powerpc64__
#error "On PPC64, FPR save/restore functions are provided by the linker."
#endif
.file "crtsavres.S"
.section ".text"
#define _GLOBAL(name) \
.type name,@function; \
.globl name; \
name:
/* Routines for saving integer registers, called by the compiler. */
/* Called with r11 pointing to the stack header word of the caller of the */
/* function, just beyond the end of the integer save area. */
_GLOBAL(_savegpr_14)
_GLOBAL(_save32gpr_14)
stw 14,-72(11) /* save gp registers */
_GLOBAL(_savegpr_15)
_GLOBAL(_save32gpr_15)
stw 15,-68(11)
_GLOBAL(_savegpr_16)
_GLOBAL(_save32gpr_16)
stw 16,-64(11)
_GLOBAL(_savegpr_17)
_GLOBAL(_save32gpr_17)
stw 17,-60(11)
_GLOBAL(_savegpr_18)
_GLOBAL(_save32gpr_18)
stw 18,-56(11)
_GLOBAL(_savegpr_19)
_GLOBAL(_save32gpr_19)
stw 19,-52(11)
_GLOBAL(_savegpr_20)
_GLOBAL(_save32gpr_20)
stw 20,-48(11)
_GLOBAL(_savegpr_21)
_GLOBAL(_save32gpr_21)
stw 21,-44(11)
_GLOBAL(_savegpr_22)
_GLOBAL(_save32gpr_22)
stw 22,-40(11)
_GLOBAL(_savegpr_23)
_GLOBAL(_save32gpr_23)
stw 23,-36(11)
_GLOBAL(_savegpr_24)
_GLOBAL(_save32gpr_24)
stw 24,-32(11)
_GLOBAL(_savegpr_25)
_GLOBAL(_save32gpr_25)
stw 25,-28(11)
_GLOBAL(_savegpr_26)
_GLOBAL(_save32gpr_26)
stw 26,-24(11)
_GLOBAL(_savegpr_27)
_GLOBAL(_save32gpr_27)
stw 27,-20(11)
_GLOBAL(_savegpr_28)
_GLOBAL(_save32gpr_28)
stw 28,-16(11)
_GLOBAL(_savegpr_29)
_GLOBAL(_save32gpr_29)
stw 29,-12(11)
_GLOBAL(_savegpr_30)
_GLOBAL(_save32gpr_30)
stw 30,-8(11)
_GLOBAL(_savegpr_31)
_GLOBAL(_save32gpr_31)
stw 31,-4(11)
Annotation
- Atlas domain: Architecture Layer / arch/powerpc.
- 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.