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56 lines
1.3 KiB
56 lines
1.3 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <linux/elf.h> |
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#include <asm/kexec.h> |
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int arch_kexec_do_relocs(int r_type, void *loc, unsigned long val, |
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unsigned long addr) |
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{ |
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switch (r_type) { |
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case R_390_NONE: |
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break; |
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case R_390_8: /* Direct 8 bit. */ |
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*(u8 *)loc = val; |
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break; |
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case R_390_12: /* Direct 12 bit. */ |
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*(u16 *)loc &= 0xf000; |
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*(u16 *)loc |= val & 0xfff; |
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break; |
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case R_390_16: /* Direct 16 bit. */ |
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*(u16 *)loc = val; |
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break; |
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case R_390_20: /* Direct 20 bit. */ |
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*(u32 *)loc &= 0xf00000ff; |
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*(u32 *)loc |= (val & 0xfff) << 16; /* DL */ |
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*(u32 *)loc |= (val & 0xff000) >> 4; /* DH */ |
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break; |
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case R_390_32: /* Direct 32 bit. */ |
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*(u32 *)loc = val; |
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break; |
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case R_390_64: /* Direct 64 bit. */ |
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case R_390_GLOB_DAT: |
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case R_390_JMP_SLOT: |
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*(u64 *)loc = val; |
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break; |
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case R_390_PC16: /* PC relative 16 bit. */ |
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*(u16 *)loc = (val - addr); |
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break; |
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case R_390_PC16DBL: /* PC relative 16 bit shifted by 1. */ |
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*(u16 *)loc = (val - addr) >> 1; |
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break; |
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case R_390_PC32DBL: /* PC relative 32 bit shifted by 1. */ |
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*(u32 *)loc = (val - addr) >> 1; |
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break; |
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case R_390_PC32: /* PC relative 32 bit. */ |
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*(u32 *)loc = (val - addr); |
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break; |
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case R_390_PC64: /* PC relative 64 bit. */ |
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*(u64 *)loc = (val - addr); |
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break; |
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case R_390_RELATIVE: |
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*(unsigned long *) loc = val; |
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break; |
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default: |
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return 1; |
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} |
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return 0; |
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}
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