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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121708 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2010-12-13 19:18:13 +00:00
parent cf8b3257c0
commit 7e294cfcf9
1 changed files with 8 additions and 8 deletions
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16
lib/Target/ARM/ARMAsmBackend.cpp
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@ -112,7 +112,7 @@ static unsigned adjustFixupValue(unsigned Kind, uint64_t Value) {
}
assert ((Value < 4096) && "Out of range pc-relative fixup value!");
Value |= isAdd << 23;
// Same addressing mode as fixup_arm_pcrel_10,
// but with 16-bit halfwords swapped.
if (Kind == ARM::fixup_t2_ldst_pcrel_12) {
@ -120,7 +120,7 @@ static unsigned adjustFixupValue(unsigned Kind, uint64_t Value) {
swapped |= (Value & 0x0000FFFF) << 16;
return swapped;
}
return Value;
}
case ARM::fixup_arm_adr_pcrel_12: {
@ -143,14 +143,14 @@ static unsigned adjustFixupValue(unsigned Kind, uint64_t Value) {
case ARM::fixup_t2_branch: {
Value = Value - 4;
Value >>= 1; // Low bit is not encoded.
uint64_t out = 0;
out |= (Value & 0x80000) << 7; // S bit
out |= (Value & 0x40000) >> 7; // J2 bit
out |= (Value & 0x20000) >> 4; // J1 bit
out |= (Value & 0x1F800) << 5; // imm6 field
out |= (Value & 0x007FF); // imm11 field
uint64_t swapped = (out & 0xFFFF0000) >> 16;
swapped |= (out & 0x0000FFFF) << 16;
return swapped;
@ -159,9 +159,9 @@ static unsigned adjustFixupValue(unsigned Kind, uint64_t Value) {
// The value doesn't encode the low bit (always zero) and is offset by
// four. The value is encoded into disjoint bit positions in the destination
// opcode. x = unchanged, I = immediate value bit, S = sign extension bit
//
//
// BL: xxxxxSIIIIIIIIII xxxxxIIIIIIIIIII
//
//
// Note that the halfwords are stored high first, low second; so we need
// to transpose the fixup value here to map properly.
unsigned isNeg = (int64_t(Value) < 0) ? 1 : 0;
@ -177,9 +177,9 @@ static unsigned adjustFixupValue(unsigned Kind, uint64_t Value) {
// four (see fixup_arm_thumb_cp). The value is encoded into disjoint bit
// positions in the destination opcode. x = unchanged, I = immediate value
// bit, S = sign extension bit, 0 = zero.
//
//
// BLX: xxxxxSIIIIIIIIII xxxxxIIIIIIIIII0
//
//
// Note that the halfwords are stored high first, low second; so we need
// to transpose the fixup value here to map properly.
unsigned isNeg = (int64_t(Value) < 0) ? 1 : 0;