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head/lib/libc/powerpc64/gen/_ctx_start.S
| Show All 26 Lines | |||||
| #include <machine/asm.h> | #include <machine/asm.h> | ||||
| __FBSDID("$FreeBSD$"); | __FBSDID("$FreeBSD$"); | ||||
| .globl CNAME(_ctx_done) | .globl CNAME(_ctx_done) | ||||
| .globl CNAME(abort) | .globl CNAME(abort) | ||||
| ENTRY(_ctx_start) | ENTRY(_ctx_start) | ||||
| #if !defined(_CALL_ELF) || _CALL_ELF == 1 | |||||
| /* Load values from function descriptor */ | |||||
| ld %r2,8(%r14) | ld %r2,8(%r14) | ||||
| ld %r14,0(%r14) | ld %r14,0(%r14) | ||||
| #else | |||||
| /* Load global entry point */ | |||||
| mr %r12,%r14 | |||||
| #endif | |||||
| mtlr %r14 | mtlr %r14 | ||||
| blrl /* branch to start function */ | blrl /* branch to start function */ | ||||
| mr %r3,%r15 /* pass pointer to ucontext as argument */ | mr %r3,%r15 /* pass pointer to ucontext as argument */ | ||||
| nop | nop | ||||
| bl CNAME(_ctx_done) /* branch to ctxt completion func */ | bl CNAME(_ctx_done) /* branch to ctxt completion func */ | ||||
| /* | /* | ||||
| * we should never return from the | * we should never return from the | ||||
| * above branch. | * above branch. | ||||
| */ | */ | ||||
| nop | nop | ||||
| bl CNAME(abort) /* abort */ | bl CNAME(abort) /* abort */ | ||||
| nop | nop | ||||
| END(_ctx_start) | END(_ctx_start) | ||||
| .section .note.GNU-stack,"",%progbits | .section .note.GNU-stack,"",%progbits | ||||