[PATCH] D28863: RuntimeDyldELF: Implement LDST8_ABS_LO12_NC and LDST16_ABS_LO12_NC relocs
Eugene Leviant via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Jan 23 05:25:09 PST 2017
This revision was automatically updated to reflect the committed changes.
Closed by commit rL292785: RuntimeDyldELF: add LDST8_ABS_LO12_NC and LDST16_ABS_LO12_NC relocs (authored by evgeny777).
Changed prior to commit:
https://reviews.llvm.org/D28863?vs=84847&id=85364#toc
Repository:
rL LLVM
https://reviews.llvm.org/D28863
Files:
llvm/trunk/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
llvm/trunk/test/ExecutionEngine/RuntimeDyld/AArch64/ELF_ARM64_relocations.s
Index: llvm/trunk/test/ExecutionEngine/RuntimeDyld/AArch64/ELF_ARM64_relocations.s
===================================================================
--- llvm/trunk/test/ExecutionEngine/RuntimeDyld/AArch64/ELF_ARM64_relocations.s
+++ llvm/trunk/test/ExecutionEngine/RuntimeDyld/AArch64/ELF_ARM64_relocations.s
@@ -20,6 +20,10 @@
# R_AARCH64_MOVW_UABS_G0_NC
movk x0, #:abs_g0_nc:f
l:
+# R_AARCH64_LDST8_ABS_LO12_NC
+ ldrsb x4, [x5, :lo12:a+1]
+# R_AARCH64_LDST16_ABS_LO12_NC
+ ldrh w4, [x5, :lo12:a+2]
# R_AARCH64_LDST32_ABS_LO12_NC
ldr s4, [x5, :lo12:a]
# R_AARCH64_LDST64_ABS_LO12_NC
@@ -57,9 +61,11 @@
# rtdyld-check: *{4}(g + 8) = 0xf2b13560
# rtdyld-check: *{4}(g + 12) = 0xf299bde0
-## Check LDST32_ABS_LO12_NC and LDST64_ABS_LO12_NC
-# rtdyld-check: (*{4}l)[21:10] = a[11:2]
-# rtdyld-check: (*{4}(l+4))[21:10] = a[11:3]
+## Check LDSTXX_ABS_LO12_NC
+# rtdyld-check: (*{4}l)[21:10] = (a+1)[11:0]
+# rtdyld-check: (*{4}(l+4))[21:10] = (a+2)[11:1]
+# rtdyld-check: (*{4}(l+8))[21:10] = a[11:2]
+# rtdyld-check: (*{4}(l+12))[21:10] = a[11:3]
## Check ADR_PREL_PG_HI21. Low order bits of immediate value
## go to bits 30:29. High order bits go to bits 23:5
Index: llvm/trunk/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
===================================================================
--- llvm/trunk/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
+++ llvm/trunk/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
@@ -419,6 +419,18 @@
// from bits 11:0 of X
or32AArch64Imm(TargetPtr, Value + Addend);
break;
+ case ELF::R_AARCH64_LDST8_ABS_LO12_NC:
+ // Operation: S + A
+ // Immediate goes in bits 21:10 of LD/ST instruction, taken
+ // from bits 11:0 of X
+ or32AArch64Imm(TargetPtr, getBits(Value + Addend, 0, 11));
+ break;
+ case ELF::R_AARCH64_LDST16_ABS_LO12_NC:
+ // Operation: S + A
+ // Immediate goes in bits 21:10 of LD/ST instruction, taken
+ // from bits 11:1 of X
+ or32AArch64Imm(TargetPtr, getBits(Value + Addend, 1, 11));
+ break;
case ELF::R_AARCH64_LDST32_ABS_LO12_NC:
// Operation: S + A
// Immediate goes in bits 21:10 of LD/ST instruction, taken
@@ -900,7 +912,7 @@
}
// Sometimes we don't need to create thunk for a branch.
-// This typically happens when branch target is located
+// This typically happens when branch target is located
// in the same object file. In such case target is either
// a weak symbol or symbol in a different executable section.
// This function checks if branch target is located in the
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