/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Split from entry_64.S */ #include <linux/magic.h> #include <asm/ppc_asm.h> #include <asm/asm-offsets.h> #include <asm/ftrace.h> #include <asm/ppc-opcode.h> #include <asm/export.h> .pushsection ".tramp.ftrace.text","aw",@progbits; .globl ftrace_tramp_text ftrace_tramp_text: .space 64 .popsection .pushsection ".tramp.ftrace.init","aw",@progbits; .globl ftrace_tramp_init ftrace_tramp_init: .space 64 .popsection _GLOBAL(mcount) _GLOBAL(_mcount) EXPORT_SYMBOL(_mcount) mflr r12 mtctr r12 mtlr r0 bctr #ifdef [31mCONFIG_FUNCTION_GRAPH_TRACER[0m _GLOBAL(return_to_handler) /* need to save return values */ std r4, -32(r1) std r3, -24(r1) /* save TOC */ std r2, -16(r1) std r31, -8(r1) mr r31, r1 stdu r1, -112(r1) /* * We might be called from a module. * Switch to our TOC to run inside the core kernel. */ ld r2, PACATOC(r13) bl ftrace_return_to_handler nop /* return value has real return address */ mtlr r3 ld r1, 0(r1) ld r4, -32(r1) ld r3, -24(r1) ld r2, -16(r1) ld r31, -8(r1) /* Jump back to real return address */ blr #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ |