1 files changed, 82 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/sections.h b/arch/powerpc/include/asm/sections.h
new file mode 100644
index 0000000000..ea26665f82
--- /dev/null
+++ b/arch/powerpc/include/asm/sections.h
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_POWERPC_SECTIONS_H
+#define _ASM_POWERPC_SECTIONS_H
+#ifdef __KERNEL__
+
+#include <linux/elf.h>
+#include <linux/uaccess.h>
+
+#ifdef CONFIG_HAVE_FUNCTION_DESCRIPTORS
+typedef struct func_desc func_desc_t;
+#endif
+
+#include <asm-generic/sections.h>
+
+extern char __head_end[];
+extern char __srwx_boundary[];
+
+/* Patch sites */
+extern s32 patch__call_flush_branch_caches1;
+extern s32 patch__call_flush_branch_caches2;
+extern s32 patch__call_flush_branch_caches3;
+extern s32 patch__flush_count_cache_return;
+extern s32 patch__flush_link_stack_return;
+extern s32 patch__call_kvm_flush_link_stack;
+extern s32 patch__call_kvm_flush_link_stack_p9;
+extern s32 patch__memset_nocache, patch__memcpy_nocache;
+
+extern long flush_branch_caches;
+extern long kvm_flush_link_stack;
+
+#ifdef __powerpc64__
+
+extern char __start_interrupts[];
+extern char __end_interrupts[];
+
+#ifdef CONFIG_PPC_POWERNV
+extern char start_real_trampolines[];
+extern char end_real_trampolines[];
+extern char start_virt_trampolines[];
+extern char end_virt_trampolines[];
+#endif
+
+/*
+ * This assumes the kernel is never compiled -mcmodel=small or
+ * the total .toc is always less than 64k.
+ */
+static inline unsigned long kernel_toc_addr(void)
+{
+#ifdef CONFIG_PPC_KERNEL_PCREL
+	BUILD_BUG();
+	return -1UL;
+#else
+	unsigned long toc_ptr;
+
+	asm volatile("mr %0, 2" : "=r" (toc_ptr));
+	return toc_ptr;
+#endif
+}
+
+static inline int overlaps_interrupt_vector_text(unsigned long start,
+							unsigned long end)
+{
+	unsigned long real_start, real_end;
+	real_start = __start_interrupts - _stext;
+	real_end = __end_interrupts - _stext;
+
+	return start < (unsigned long)__va(real_end) &&
+		(unsigned long)__va(real_start) < end;
+}
+
+static inline int overlaps_kernel_text(unsigned long start, unsigned long end)
+{
+	return start < (unsigned long)__init_end &&
+		(unsigned long)_stext < end;
+}
+
+#else
+static inline unsigned long kernel_toc_addr(void) { BUILD_BUG(); return -1UL; }
+#endif
+
+#endif /* __KERNEL__ */
+#endif	/* _ASM_POWERPC_SECTIONS_H */