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Add R_HEX_8_X relocation support
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Authored by sidneym on Aug 10 2018, 11:39 AM.

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Summary

Another relocation with a non-uniform relocation mask, but just 3 in this case.

LGTM

This revision is now accepted and ready to land.Aug 10 2018, 2:09 PM

This revision was automatically updated to reflect the committed changes.

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ELF/

Arch/

11 lines

test/

ELF/

13 lines

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	return 0;	return 0;
	}	}

		static uint32_t findMaskR8(uint32_t Insn) {
		if ((0xff000000 & Insn) == 0xde000000)
		return 0x00e020e8;
		if ((0xff000000 & Insn) == 0x3c000000)
		return 0x0000207f;
		return 0x00001fe0;
		}

	static void or32le(uint8_t *P, int32_t V) { write32le(P, read32le(P) \| V); }	static void or32le(uint8_t *P, int32_t V) { write32le(P, read32le(P) \| V); }

	void Hexagon::relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const {	void Hexagon::relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const {
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	case R_HEX_6_X:	case R_HEX_6_X:
	or32le(Loc, applyMask(findMaskR6(read32le(Loc)), Val));	or32le(Loc, applyMask(findMaskR6(read32le(Loc)), Val));
	break;	break;
		case R_HEX_8_X:
		or32le(Loc, applyMask(findMaskR8(read32le(Loc)), Val));
		break;
	case R_HEX_12_X:	case R_HEX_12_X:
	or32le(Loc, applyMask(0x000007e0, Val));	or32le(Loc, applyMask(0x000007e0, Val));
	break;	break;
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	# R_HEX_LO16	# R_HEX_LO16
	r0.l = #LO(_start)	r0.l = #LO(_start)
	# CHECK: r0.l = #4096	# CHECK: r0.l = #4096

		# R_HEX_8_X has 3 relocation mask variations
		#0xde000000
		r0=sub(##_start,asl(r1,#4))
		# CHECK: de00c406 r0 = sub(##69632,asl(r0,#4)) }

		#0x3c000000
		memw(r0+#0) = ##_start
		# CHECK: 3c40c000 memw(r0+#0) = ##69632 }

		# The rest:
		r1:0=combine(r2,##_start);
		# CHECK: 7302e000 r1:0 = combine(r2,##69632) }
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