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49ffe168af
This is to enable relocation for code32. - RIP relative addressing is available in x86-64 only so we manually add relocation delta to the target symbols to fixup code32. - both code32 and code64 need to load GDT hence both need to fixup GDT pointer. This patch declares separate GDT pointer cpu_primary64_gdt_ptr for code64 to avoid double fixup. - manually fixup cpu_primary64_gdt_ptr in code64, but not rely on relocate() to do that. Otherwise it's very confusing that symbols from same file could be fixed up externally by relocate() or self-relocated. - to make it clear, define a new symbol ld_entry_end representing the end of the boot code that needs manually fixup, and use this symbol in relocate() to filter out all symbols belong to the entry sections. Tracked-On: #4441 Reviewed-by: Fengwei Yin <fengwei.yin@intel.com> Signed-off-by: Zide Chen <zide.chen@intel.com>
17 lines
351 B
C
17 lines
351 B
C
/*
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* Copyright (C) <2018> Intel Corporation
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef RELOCATE_H
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#define RELOCATE_H
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extern void relocate(void);
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extern uint64_t get_hv_image_delta(void);
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extern uint64_t get_hv_image_base(void);
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/* external symbols that are helpful for relocation */
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extern uint8_t _DYNAMIC[1];
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#endif /* RELOCATE_H */
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