From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/powerpc/kernel/vmlinux.lds.S | 424 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 424 insertions(+) create mode 100644 arch/powerpc/kernel/vmlinux.lds.S (limited to 'arch/powerpc/kernel/vmlinux.lds.S') diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S new file mode 100644 index 0000000000..1c5970df32 --- /dev/null +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -0,0 +1,424 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifdef CONFIG_PPC64 +#define PROVIDE32(x) PROVIDE(__unused__##x) +#else +#define PROVIDE32(x) PROVIDE(x) +#endif + +#define BSS_FIRST_SECTIONS *(.bss.prominit) +#define EMITS_PT_NOTE +#define RO_EXCEPTION_TABLE_ALIGN 0 +#define RUNTIME_DISCARD_EXIT + +#define SOFT_MASK_TABLE(align) \ + . = ALIGN(align); \ + __soft_mask_table : AT(ADDR(__soft_mask_table) - LOAD_OFFSET) { \ + __start___soft_mask_table = .; \ + KEEP(*(__soft_mask_table)) \ + __stop___soft_mask_table = .; \ + } + +#define RESTART_TABLE(align) \ + . = ALIGN(align); \ + __restart_table : AT(ADDR(__restart_table) - LOAD_OFFSET) { \ + __start___restart_table = .; \ + KEEP(*(__restart_table)) \ + __stop___restart_table = .; \ + } + +#include +#include +#include +#include + +#define STRICT_ALIGN_SIZE (1 << CONFIG_DATA_SHIFT) + +#if STRICT_ALIGN_SIZE < PAGE_SIZE +#error "CONFIG_DATA_SHIFT must be >= PAGE_SHIFT" +#endif + +ENTRY(_stext) + +PHDRS { + text PT_LOAD FLAGS(7); /* RWX */ + note PT_NOTE FLAGS(0); +} + +#ifdef CONFIG_PPC64 +OUTPUT_ARCH(powerpc:common64) +jiffies = jiffies_64; +#else +OUTPUT_ARCH(powerpc:common) +jiffies = jiffies_64 + 4; +#endif +SECTIONS +{ + . = KERNELBASE; + +/* + * Text, read only data and other permanent read-only sections + */ + + _text = .; + _stext = .; + + /* + * Head text. + * This needs to be in its own output section to avoid ld placing + * branch trampoline stubs randomly throughout the fixed sections, + * which it will do (even if the branch comes from another section) + * in order to optimize stub generation. + */ + .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { +#ifdef CONFIG_PPC64 + KEEP(*(.head.text.first_256B)); +#ifdef CONFIG_PPC_BOOK3E_64 +#else + KEEP(*(.head.text.real_vectors)); + *(.head.text.real_trampolines); + KEEP(*(.head.text.virt_vectors)); + *(.head.text.virt_trampolines); +# if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV) + KEEP(*(.head.data.fwnmi_page)); +# endif +#endif +#else /* !CONFIG_PPC64 */ + HEAD_TEXT +#endif + } :text + + __head_end = .; + +#ifdef CONFIG_PPC64 + /* + * ALIGN(0) overrides the default output section alignment because + * this needs to start right after .head.text in order for fixed + * section placement to work. + */ + .text ALIGN(0) : AT(ADDR(.text) - LOAD_OFFSET) { +#ifdef CONFIG_LD_HEAD_STUB_CATCH + KEEP(*(.linker_stub_catch)); + . = . ; +#endif + +#else + .text : AT(ADDR(.text) - LOAD_OFFSET) { + ALIGN_FUNCTION(); +#endif + /* careful! __ftr_alt_* sections need to be close to .text */ + *(.text.hot .text.hot.* TEXT_MAIN .text.fixup .text.unlikely .text.unlikely.* .fixup __ftr_alt_* .ref.text); + *(.tramp.ftrace.text); + NOINSTR_TEXT + SCHED_TEXT + LOCK_TEXT + KPROBES_TEXT + IRQENTRY_TEXT + SOFTIRQENTRY_TEXT + /* + * -Os builds call FP save/restore functions. The powerpc64 + * linker generates those on demand in the .sfpr section. + * .sfpr gets placed at the beginning of a group of input + * sections, which can break start-of-text offset if it is + * included with the main text sections, so put it by itself. + */ + *(.sfpr); + *(.text.asan.* .text.tsan.*) + MEM_KEEP(init.text) + MEM_KEEP(exit.text) + } :text + + . = ALIGN(PAGE_SIZE); + _etext = .; + PROVIDE32 (etext = .); + + /* Read-only data */ + RO_DATA(PAGE_SIZE) + +#ifdef CONFIG_PPC32 + .sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) { + *(.sdata2) + } +#endif + + .data.rel.ro : AT(ADDR(.data.rel.ro) - LOAD_OFFSET) { + *(.data.rel.ro .data.rel.ro.*) + } + + .branch_lt : AT(ADDR(.branch_lt) - LOAD_OFFSET) { + *(.branch_lt) + } + +#ifdef CONFIG_PPC32 + .got1 : AT(ADDR(.got1) - LOAD_OFFSET) { + *(.got1) + } + .got2 : AT(ADDR(.got2) - LOAD_OFFSET) { + __got2_start = .; + *(.got2) + __got2_end = .; + } + .got : AT(ADDR(.got) - LOAD_OFFSET) { + *(.got) + *(.got.plt) + } + .plt : AT(ADDR(.plt) - LOAD_OFFSET) { + /* XXX: is .plt (and .got.plt) required? */ + *(.plt) + } + +#else /* CONFIG_PPC32 */ +#ifndef CONFIG_PPC_KERNEL_PCREL + .toc1 : AT(ADDR(.toc1) - LOAD_OFFSET) { + *(.toc1) + } +#endif + + .got : AT(ADDR(.got) - LOAD_OFFSET) ALIGN(256) { +#ifdef CONFIG_PPC_KERNEL_PCREL + *(.got) +#else + *(.got .toc) +#endif + } + + SOFT_MASK_TABLE(8) + RESTART_TABLE(8) + +#ifdef CONFIG_PPC64_ELF_ABI_V1 + .opd : AT(ADDR(.opd) - LOAD_OFFSET) { + __start_opd = .; + KEEP(*(.opd)) + __end_opd = .; + } +#endif + + . = ALIGN(8); + __stf_entry_barrier_fixup : AT(ADDR(__stf_entry_barrier_fixup) - LOAD_OFFSET) { + __start___stf_entry_barrier_fixup = .; + *(__stf_entry_barrier_fixup) + __stop___stf_entry_barrier_fixup = .; + } + + . = ALIGN(8); + __uaccess_flush_fixup : AT(ADDR(__uaccess_flush_fixup) - LOAD_OFFSET) { + __start___uaccess_flush_fixup = .; + *(__uaccess_flush_fixup) + __stop___uaccess_flush_fixup = .; + } + + . = ALIGN(8); + __entry_flush_fixup : AT(ADDR(__entry_flush_fixup) - LOAD_OFFSET) { + __start___entry_flush_fixup = .; + *(__entry_flush_fixup) + __stop___entry_flush_fixup = .; + } + + . = ALIGN(8); + __scv_entry_flush_fixup : AT(ADDR(__scv_entry_flush_fixup) - LOAD_OFFSET) { + __start___scv_entry_flush_fixup = .; + *(__scv_entry_flush_fixup) + __stop___scv_entry_flush_fixup = .; + } + + . = ALIGN(8); + __stf_exit_barrier_fixup : AT(ADDR(__stf_exit_barrier_fixup) - LOAD_OFFSET) { + __start___stf_exit_barrier_fixup = .; + *(__stf_exit_barrier_fixup) + __stop___stf_exit_barrier_fixup = .; + } + + . = ALIGN(8); + __rfi_flush_fixup : AT(ADDR(__rfi_flush_fixup) - LOAD_OFFSET) { + __start___rfi_flush_fixup = .; + *(__rfi_flush_fixup) + __stop___rfi_flush_fixup = .; + } +#endif /* CONFIG_PPC32 */ + +#ifdef CONFIG_PPC_BARRIER_NOSPEC + . = ALIGN(8); + __spec_barrier_fixup : AT(ADDR(__spec_barrier_fixup) - LOAD_OFFSET) { + __start___barrier_nospec_fixup = .; + *(__barrier_nospec_fixup) + __stop___barrier_nospec_fixup = .; + } +#endif /* CONFIG_PPC_BARRIER_NOSPEC */ + +#ifdef CONFIG_PPC_E500 + . = ALIGN(8); + __spec_btb_flush_fixup : AT(ADDR(__spec_btb_flush_fixup) - LOAD_OFFSET) { + __start__btb_flush_fixup = .; + *(__btb_flush_fixup) + __stop__btb_flush_fixup = .; + } +#endif + + /* + * Various code relies on __init_begin being at the strict RWX boundary. + */ + . = ALIGN(STRICT_ALIGN_SIZE); + __srwx_boundary = .; + __end_rodata = .; + __init_begin = .; + +/* + * Init sections discarded at runtime + */ + .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { + _sinittext = .; + INIT_TEXT + + /* + *.init.text might be RO so we must ensure this section ends on + * a page boundary. + */ + . = ALIGN(PAGE_SIZE); + _einittext = .; + *(.tramp.ftrace.init); + } :text + + /* .exit.text is discarded at runtime, not link time, + * to deal with references from __bug_table + */ + .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { + EXIT_TEXT + } + + . = ALIGN(PAGE_SIZE); + + INIT_DATA_SECTION(16) + + . = ALIGN(8); + __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) { + __start___ftr_fixup = .; + KEEP(*(__ftr_fixup)) + __stop___ftr_fixup = .; + } + . = ALIGN(8); + __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) { + __start___mmu_ftr_fixup = .; + KEEP(*(__mmu_ftr_fixup)) + __stop___mmu_ftr_fixup = .; + } + . = ALIGN(8); + __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) { + __start___lwsync_fixup = .; + KEEP(*(__lwsync_fixup)) + __stop___lwsync_fixup = .; + } +#ifdef CONFIG_PPC64 + . = ALIGN(8); + __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) { + __start___fw_ftr_fixup = .; + KEEP(*(__fw_ftr_fixup)) + __stop___fw_ftr_fixup = .; + } +#endif + + PERCPU_SECTION(L1_CACHE_BYTES) + + . = ALIGN(8); + .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) { + __machine_desc_start = . ; + KEEP(*(.machine.desc)) + __machine_desc_end = . ; + } +#ifdef CONFIG_RELOCATABLE + . = ALIGN(8); + .dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET) + { + __dynamic_symtab = .; + *(.dynsym) + } + .dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) } + .dynamic : AT(ADDR(.dynamic) - LOAD_OFFSET) + { + __dynamic_start = .; + *(.dynamic) + } + .hash : AT(ADDR(.hash) - LOAD_OFFSET) { *(.hash) } + .gnu.hash : AT(ADDR(.gnu.hash) - LOAD_OFFSET) { *(.gnu.hash) } + .interp : AT(ADDR(.interp) - LOAD_OFFSET) { *(.interp) } + .rela.dyn : AT(ADDR(.rela.dyn) - LOAD_OFFSET) + { + __rela_dyn_start = .; + *(.rela*) + } +#endif + /* .exit.data is discarded at runtime, not link time, + * to deal with references from .exit.text + */ + .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { + EXIT_DATA + } + + /* freed after init ends here */ + . = ALIGN(PAGE_SIZE); + __init_end = .; + +/* + * And now the various read/write data + */ + + . = ALIGN(PAGE_SIZE); + _sdata = .; + + .data : AT(ADDR(.data) - LOAD_OFFSET) { + DATA_DATA + *(.data.rel*) +#ifdef CONFIG_PPC32 + *(SDATA_MAIN) +#endif + } + + /* The initial task and kernel stack */ + INIT_TASK_DATA_SECTION(THREAD_ALIGN) + + .data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) { + PAGE_ALIGNED_DATA(PAGE_SIZE) + } + + .data..cacheline_aligned : AT(ADDR(.data..cacheline_aligned) - LOAD_OFFSET) { + CACHELINE_ALIGNED_DATA(L1_CACHE_BYTES) + } + + .data..read_mostly : AT(ADDR(.data..read_mostly) - LOAD_OFFSET) { + READ_MOSTLY_DATA(L1_CACHE_BYTES) + } + + . = ALIGN(PAGE_SIZE); + .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { + NOSAVE_DATA + } + + BUG_TABLE + + . = ALIGN(PAGE_SIZE); + _edata = .; + PROVIDE32 (edata = .); + +/* + * And finally the bss + */ + + BSS_SECTION(0, 0, 0) + + . = ALIGN(PAGE_SIZE); + _end = . ; + PROVIDE32 (end = .); + + DWARF_DEBUG + ELF_DETAILS + + DISCARDS + /DISCARD/ : { + *(*.EMB.apuinfo) + *(.glink .iplt .plt) + *(.gnu.version*) + *(.gnu.attributes) + *(.eh_frame) +#ifndef CONFIG_RELOCATABLE + *(.rela*) +#endif + } +} -- cgit v1.2.3