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d875c88104
The usual way to get a 32-bit relocation is to use a constant extender which doubles the size of the instruction, 4 bytes to 8 bytes. Another way is to put a .word32 and mix code and data within a function. The disadvantage is it's not a valid instruction encoding and jumping over it causes prefetch stalls inside the hardware. This relocation packs a 23-bit value in to an "r0 = add(rX, #a)" instruction by overwriting the source register bits. Since r0 is the return value register, if this instruction is placed after a function call which return void, r0 will be filled with an undefined value, the prefetch won't be confused, and the callee can access the constant value by way of the link register. llvm-svn: 261006
102 lines
3.9 KiB
Modula-2
102 lines
3.9 KiB
Modula-2
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#ifndef ELF_RELOC
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#error "ELF_RELOC must be defined"
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#endif
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// Release 5 ABI
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ELF_RELOC(R_HEX_NONE, 0)
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ELF_RELOC(R_HEX_B22_PCREL, 1)
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ELF_RELOC(R_HEX_B15_PCREL, 2)
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ELF_RELOC(R_HEX_B7_PCREL, 3)
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ELF_RELOC(R_HEX_LO16, 4)
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ELF_RELOC(R_HEX_HI16, 5)
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ELF_RELOC(R_HEX_32, 6)
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ELF_RELOC(R_HEX_16, 7)
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ELF_RELOC(R_HEX_8, 8)
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ELF_RELOC(R_HEX_GPREL16_0, 9)
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ELF_RELOC(R_HEX_GPREL16_1, 10)
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ELF_RELOC(R_HEX_GPREL16_2, 11)
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ELF_RELOC(R_HEX_GPREL16_3, 12)
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ELF_RELOC(R_HEX_HL16, 13)
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ELF_RELOC(R_HEX_B13_PCREL, 14)
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ELF_RELOC(R_HEX_B9_PCREL, 15)
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ELF_RELOC(R_HEX_B32_PCREL_X, 16)
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ELF_RELOC(R_HEX_32_6_X, 17)
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ELF_RELOC(R_HEX_B22_PCREL_X, 18)
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ELF_RELOC(R_HEX_B15_PCREL_X, 19)
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ELF_RELOC(R_HEX_B13_PCREL_X, 20)
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ELF_RELOC(R_HEX_B9_PCREL_X, 21)
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ELF_RELOC(R_HEX_B7_PCREL_X, 22)
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ELF_RELOC(R_HEX_16_X, 23)
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ELF_RELOC(R_HEX_12_X, 24)
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ELF_RELOC(R_HEX_11_X, 25)
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ELF_RELOC(R_HEX_10_X, 26)
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ELF_RELOC(R_HEX_9_X, 27)
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ELF_RELOC(R_HEX_8_X, 28)
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ELF_RELOC(R_HEX_7_X, 29)
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ELF_RELOC(R_HEX_6_X, 30)
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ELF_RELOC(R_HEX_32_PCREL, 31)
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ELF_RELOC(R_HEX_COPY, 32)
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ELF_RELOC(R_HEX_GLOB_DAT, 33)
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ELF_RELOC(R_HEX_JMP_SLOT, 34)
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ELF_RELOC(R_HEX_RELATIVE, 35)
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ELF_RELOC(R_HEX_PLT_B22_PCREL, 36)
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ELF_RELOC(R_HEX_GOTREL_LO16, 37)
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ELF_RELOC(R_HEX_GOTREL_HI16, 38)
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ELF_RELOC(R_HEX_GOTREL_32, 39)
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ELF_RELOC(R_HEX_GOT_LO16, 40)
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ELF_RELOC(R_HEX_GOT_HI16, 41)
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ELF_RELOC(R_HEX_GOT_32, 42)
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ELF_RELOC(R_HEX_GOT_16, 43)
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ELF_RELOC(R_HEX_DTPMOD_32, 44)
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ELF_RELOC(R_HEX_DTPREL_LO16, 45)
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ELF_RELOC(R_HEX_DTPREL_HI16, 46)
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ELF_RELOC(R_HEX_DTPREL_32, 47)
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ELF_RELOC(R_HEX_DTPREL_16, 48)
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ELF_RELOC(R_HEX_GD_PLT_B22_PCREL, 49)
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ELF_RELOC(R_HEX_GD_GOT_LO16, 50)
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ELF_RELOC(R_HEX_GD_GOT_HI16, 51)
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ELF_RELOC(R_HEX_GD_GOT_32, 52)
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ELF_RELOC(R_HEX_GD_GOT_16, 53)
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ELF_RELOC(R_HEX_IE_LO16, 54)
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ELF_RELOC(R_HEX_IE_HI16, 55)
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ELF_RELOC(R_HEX_IE_32, 56)
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ELF_RELOC(R_HEX_IE_GOT_LO16, 57)
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ELF_RELOC(R_HEX_IE_GOT_HI16, 58)
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ELF_RELOC(R_HEX_IE_GOT_32, 59)
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ELF_RELOC(R_HEX_IE_GOT_16, 60)
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ELF_RELOC(R_HEX_TPREL_LO16, 61)
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ELF_RELOC(R_HEX_TPREL_HI16, 62)
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ELF_RELOC(R_HEX_TPREL_32, 63)
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ELF_RELOC(R_HEX_TPREL_16, 64)
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ELF_RELOC(R_HEX_6_PCREL_X, 65)
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ELF_RELOC(R_HEX_GOTREL_32_6_X, 66)
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ELF_RELOC(R_HEX_GOTREL_16_X, 67)
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ELF_RELOC(R_HEX_GOTREL_11_X, 68)
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ELF_RELOC(R_HEX_GOT_32_6_X, 69)
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ELF_RELOC(R_HEX_GOT_16_X, 70)
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ELF_RELOC(R_HEX_GOT_11_X, 71)
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ELF_RELOC(R_HEX_DTPREL_32_6_X, 72)
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ELF_RELOC(R_HEX_DTPREL_16_X, 73)
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ELF_RELOC(R_HEX_DTPREL_11_X, 74)
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ELF_RELOC(R_HEX_GD_GOT_32_6_X, 75)
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ELF_RELOC(R_HEX_GD_GOT_16_X, 76)
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ELF_RELOC(R_HEX_GD_GOT_11_X, 77)
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ELF_RELOC(R_HEX_IE_32_6_X, 78)
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ELF_RELOC(R_HEX_IE_16_X, 79)
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ELF_RELOC(R_HEX_IE_GOT_32_6_X, 80)
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ELF_RELOC(R_HEX_IE_GOT_16_X, 81)
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ELF_RELOC(R_HEX_IE_GOT_11_X, 82)
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ELF_RELOC(R_HEX_TPREL_32_6_X, 83)
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ELF_RELOC(R_HEX_TPREL_16_X, 84)
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ELF_RELOC(R_HEX_TPREL_11_X, 85)
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ELF_RELOC(R_HEX_LD_PLT_B22_PCREL, 86)
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ELF_RELOC(R_HEX_LD_GOT_LO16, 87)
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ELF_RELOC(R_HEX_LD_GOT_HI16, 88)
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ELF_RELOC(R_HEX_LD_GOT_32, 89)
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ELF_RELOC(R_HEX_LD_GOT_16, 90)
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ELF_RELOC(R_HEX_LD_GOT_32_6_X, 91)
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ELF_RELOC(R_HEX_LD_GOT_16_X, 92)
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ELF_RELOC(R_HEX_LD_GOT_11_X, 93)
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ELF_RELOC(R_HEX_23_REG, 94)
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