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| author | Sunil V L <sunilvl@ventanamicro.com> | 2021-07-10 14:31:14 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-07-21 02:12:29 +0000 |
| commit | c32c5911c41fa691a5333e7567003cc124e7ab5f (patch) | |
| tree | 908117ccf2b1211d64f85ca40096118568be840a | |
| parent | 83b43c4cb17ec8c9fd2bb5843bf66e5961f28c82 (diff) | |
| download | edk2-c32c5911c41fa691a5333e7567003cc124e7ab5f.tar.gz edk2-c32c5911c41fa691a5333e7567003cc124e7ab5f.tar.bz2 edk2-c32c5911c41fa691a5333e7567003cc124e7ab5f.zip | |
BaseTools GenFw: Add support for R_RISCV_PCREL_LO12_S relocation
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3459
This patch adds support for R_RISCV_PCREL_LO12_S relocation type.
The logic is same as existing R_RISCV_PCREL_LO12_I relocation
except the difference between load vs store instruction formats.
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Yuwei Chen <yuwei.chen@intel.com>
Cc: Pete Batard <pete@akeo.ie>
Cc: Abner Chang <abner.chang@hpe.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Reviewed-by: Daniel Schaefer <daniel.schaefer@hpe.com>
Acked-by: Abner Chang <abner.chang@hpe.com>
Acked-by: Liming Gao <gaoliming@byosoft.com.cn>
| -rw-r--r-- | BaseTools/Source/C/GenFw/Elf64Convert.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/BaseTools/Source/C/GenFw/Elf64Convert.c b/BaseTools/Source/C/GenFw/Elf64Convert.c index 3d7e20aaff..0bb3ead228 100644 --- a/BaseTools/Source/C/GenFw/Elf64Convert.c +++ b/BaseTools/Source/C/GenFw/Elf64Convert.c @@ -557,6 +557,60 @@ WriteSectionRiscV64 ( Value = (UINT32)(RV_X(*(UINT32 *)mRiscVPass1Targ, 12, 20));
break;
+ case R_RISCV_PCREL_LO12_S:
+ if (mRiscVPass1Targ != NULL && mRiscVPass1Sym != NULL && mRiscVPass1SymSecIndex != 0) {
+ int i;
+ Value2 = (UINT32)(RV_X(*(UINT32 *)mRiscVPass1Targ, 12, 20));
+
+ Value = ((UINT32)(RV_X(*(UINT32 *)Targ, 25, 7)) << 5);
+ Value = (Value | (UINT32)(RV_X(*(UINT32 *)Targ, 7, 5)));
+
+ if(Value & (RISCV_IMM_REACH/2)) {
+ Value |= ~(RISCV_IMM_REACH-1);
+ }
+ Value = Value - (UINT32)mRiscVPass1Sym->sh_addr + mCoffSectionsOffset[mRiscVPass1SymSecIndex];
+
+ if(-2048 > (INT32)Value) {
+ i = (((INT32)Value * -1) / 4096);
+ Value2 -= i;
+ Value += 4096 * i;
+ if(-2048 > (INT32)Value) {
+ Value2 -= 1;
+ Value += 4096;
+ }
+ }
+ else if( 2047 < (INT32)Value) {
+ i = (Value / 4096);
+ Value2 += i;
+ Value -= 4096 * i;
+ if(2047 < (INT32)Value) {
+ Value2 += 1;
+ Value -= 4096;
+ }
+ }
+
+ // Update the IMM of SD instruction
+ //
+ // |31 25|24 20|19 15|14 12 |11 7|6 0|
+ // |-------------------------------------------|-------|
+ // |imm[11:5] | rs2 | rs1 | funct3 |imm[4:0] | opcode|
+ // ---------------------------------------------------
+
+ // First Zero out current IMM
+ *(UINT32 *)Targ &= ~0xfe000f80;
+
+ // Update with new IMM
+ *(UINT32 *)Targ |= (RV_X(Value, 5, 7) << 25);
+ *(UINT32 *)Targ |= (RV_X(Value, 0, 5) << 7);
+
+ // Update previous instruction
+ *(UINT32 *)mRiscVPass1Targ = (RV_X(Value2, 0, 20)<<12) | (RV_X(*(UINT32 *)mRiscVPass1Targ, 0, 12));
+ }
+ mRiscVPass1Sym = NULL;
+ mRiscVPass1Targ = NULL;
+ mRiscVPass1SymSecIndex = 0;
+ break;
+
case R_RISCV_PCREL_LO12_I:
if (mRiscVPass1Targ != NULL && mRiscVPass1Sym != NULL && mRiscVPass1SymSecIndex != 0) {
int i;
@@ -1587,6 +1641,7 @@ WriteRelocations64 ( case R_RISCV_PCREL_HI20:
case R_RISCV_GOT_HI20:
case R_RISCV_PCREL_LO12_I:
+ case R_RISCV_PCREL_LO12_S:
break;
default:
|