[edk2-devel] [PATCH v1 26/34] MdePkg/BasePeCoff: Add LoongArch PE/Coff related code.
Chao Li
lichao at loongson.cn
Thu Sep 8 04:51:58 UTC 2022
Add LoongArch image relocation.
Cc: Michael D Kinney <michael.d.kinney at intel.com>
Cc: Liming Gao <gaoliming at byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu at intel.com>
Signed-off-by: Chao Li <lichao at loongson.cn>
Co-authored-by: Baoqi Zhang <zhangbaoqi at loongson.cn>
---
MdePkg/Library/BasePeCoffLib/BasePeCoff.c | 3 +-
.../Library/BasePeCoffLib/BasePeCoffLib.inf | 5 +
.../Library/BasePeCoffLib/BasePeCoffLib.uni | 2 +
.../BasePeCoffLib/LoongArch/PeCoffLoaderEx.c | 137 ++++++++++++++++++
4 files changed, 146 insertions(+), 1 deletion(-)
create mode 100644 MdePkg/Library/BasePeCoffLib/LoongArch/PeCoffLoaderEx.c
diff --git a/MdePkg/Library/BasePeCoffLib/BasePeCoff.c b/MdePkg/Library/BasePeCoffLib/BasePeCoff.c
index 6d8d9faeb8..97a8aaf8c7 100644
--- a/MdePkg/Library/BasePeCoffLib/BasePeCoff.c
+++ b/MdePkg/Library/BasePeCoffLib/BasePeCoff.c
@@ -1,6 +1,6 @@
/** @file
Base PE/COFF loader supports loading any PE32/PE32+ or TE image, but
- only supports relocating IA32, x64, IPF, ARM, RISC-V and EBC images.
+ only supports relocating IA32, x64, IPF, ARM, RISC-V, LoongArch and EBC images.
Caution: This file requires additional review when modified.
This library will have external input - PE/COFF image.
@@ -18,6 +18,7 @@
Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
Portions Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+ Portions Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
diff --git a/MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf b/MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
index 110b6d5a09..3b8b8eb191 100644
--- a/MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
+++ b/MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
@@ -4,6 +4,7 @@
# The IA32 version library support loading IA32, X64 and EBC PE/COFF images.
# The X64 version library support loading IA32, X64 and EBC PE/COFF images.
# The RISC-V version library support loading RISC-V images.
+# The LoongArch version library support loading LoongArch images.
#
# Caution: This module requires additional review when modified.
# This library will have external input - PE/COFF image.
@@ -13,6 +14,7 @@
# Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
# Portions Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+# Portions Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
@@ -46,6 +48,9 @@
[Sources.RISCV64]
RiscV/PeCoffLoaderEx.c
+[Sources.LOONGARCH64]
+ LoongArch/PeCoffLoaderEx.c
+
[Packages]
MdePkg/MdePkg.dec
diff --git a/MdePkg/Library/BasePeCoffLib/BasePeCoffLib.uni b/MdePkg/Library/BasePeCoffLib/BasePeCoffLib.uni
index 55417029f2..1f731344e1 100644
--- a/MdePkg/Library/BasePeCoffLib/BasePeCoffLib.uni
+++ b/MdePkg/Library/BasePeCoffLib/BasePeCoffLib.uni
@@ -5,6 +5,7 @@
// The IA32 version library support loading IA32, X64 and EBC PE/COFF images.
// The X64 version library support loading IA32, X64 and EBC PE/COFF images.
// The RISC-V version library support loading RISC-V32 and RISC-V64 PE/COFF images.
+// The LoongArch version library support loading LoongArch32 and LoongArch64 PE/COFF images.
//
// Caution: This module requires additional review when modified.
// This library will have external input - PE/COFF image.
@@ -14,6 +15,7 @@
// Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
// Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
// Portions Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+// Portions Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
//
// SPDX-License-Identifier: BSD-2-Clause-Patent
//
diff --git a/MdePkg/Library/BasePeCoffLib/LoongArch/PeCoffLoaderEx.c b/MdePkg/Library/BasePeCoffLib/LoongArch/PeCoffLoaderEx.c
new file mode 100644
index 0000000000..417096f334
--- /dev/null
+++ b/MdePkg/Library/BasePeCoffLib/LoongArch/PeCoffLoaderEx.c
@@ -0,0 +1,137 @@
+/** @file
+ PE/Coff loader for LoongArch PE image
+
+ Copyright (c) 2022, Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include "BasePeCoffLibInternals.h"
+#include <Library/BaseLib.h>
+
+/**
+ Performs an LoongArch specific relocation fixup and is a no-op on other
+ instruction sets.
+
+ @param[in] Reloc Pointer to the relocation record.
+ @param[in, out] Fixup Pointer to the address to fix up.
+ @param[in, out] FixupData Pointer to a buffer to log the fixups.
+ @param[in] Adjust The offset to adjust the fixup.
+
+ @return Status code.
+
+**/
+RETURN_STATUS
+PeCoffLoaderRelocateImageEx (
+ IN UINT16 *Reloc,
+ IN OUT CHAR8 *Fixup,
+ IN OUT CHAR8 **FixupData,
+ IN UINT64 Adjust
+ )
+{
+ UINT8 RelocType;
+ UINT64 Value;
+ UINT64 Tmp1;
+ UINT64 Tmp2;
+
+ RelocType = (*Reloc) >> 12;
+ Value = 0;
+ Tmp1 = 0;
+ Tmp2 = 0;
+
+ switch (RelocType) {
+ case EFI_IMAGE_REL_BASED_LOONGARCH64_MARK_LA:
+ // The next four instructions are used to load a 64 bit address, relocate all of them
+ Value = (*(UINT32 *)Fixup & 0x1ffffe0) << 7 | // lu12i.w 20bits from bit5
+ (*((UINT32 *)Fixup + 1) & 0x3ffc00) >> 10; // ori 12bits from bit10
+ Tmp1 = *((UINT32 *)Fixup + 2) & 0x1ffffe0; // lu32i.d 20bits from bit5
+ Tmp2 = *((UINT32 *)Fixup + 3) & 0x3ffc00; // lu52i.d 12bits from bit10
+ Value = Value | (Tmp1 << 27) | (Tmp2 << 42);
+ Value += Adjust;
+
+ *(UINT32 *)Fixup = (*(UINT32 *)Fixup & ~0x1ffffe0) | (((Value >> 12) & 0xfffff) << 5);
+ if (*FixupData != NULL) {
+ *FixupData = ALIGN_POINTER (*FixupData, sizeof (UINT32));
+ *(UINT32 *)(*FixupData) = *(UINT32 *)Fixup;
+ *FixupData = *FixupData + sizeof (UINT32);
+ }
+
+ Fixup += sizeof (UINT32);
+ *(UINT32 *)Fixup = (*(UINT32 *)Fixup & ~0x3ffc00) | ((Value & 0xfff) << 10);
+ if (*FixupData != NULL) {
+ *FixupData = ALIGN_POINTER (*FixupData, sizeof (UINT32));
+ *(UINT32 *)(*FixupData) = *(UINT32 *)Fixup;
+ *FixupData = *FixupData + sizeof (UINT32);
+ }
+
+ Fixup += sizeof (UINT32);
+ *(UINT32 *)Fixup = (*(UINT32 *)Fixup & ~0x1ffffe0) | (((Value >> 32) & 0xfffff) << 5);
+ if (*FixupData != NULL) {
+ *FixupData = ALIGN_POINTER (*FixupData, sizeof (UINT32));
+ *(UINT32 *)(*FixupData) = *(UINT32 *)Fixup;
+ *FixupData = *FixupData + sizeof (UINT32);
+ }
+
+ Fixup += sizeof (UINT32);
+ *(UINT32 *)Fixup = (*(UINT32 *)Fixup & ~0x3ffc00) | (((Value >> 52) & 0xfff) << 10);
+ if (*FixupData != NULL) {
+ *FixupData = ALIGN_POINTER (*FixupData, sizeof (UINT32));
+ *(UINT32 *)(*FixupData) = *(UINT32 *)Fixup;
+ *FixupData = *FixupData + sizeof (UINT32);
+ }
+
+ break;
+ default:
+ return RETURN_UNSUPPORTED;
+ }
+
+ return RETURN_SUCCESS;
+}
+
+/**
+ Returns TRUE if the machine type of PE/COFF image is supported. Supported
+ does not mean the image can be executed it means the PE/COFF loader supports
+ loading and relocating of the image type. It's up to the caller to support
+ the entry point.
+
+ @param[in] Machine Machine type from the PE Header.
+
+ @return TRUE if this PE/COFF loader can load the image
+
+**/
+BOOLEAN
+PeCoffLoaderImageFormatSupported (
+ IN UINT16 Machine
+ )
+{
+ if (Machine == IMAGE_FILE_MACHINE_LOONGARCH64) {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/**
+ Performs an LOONGARCH-based specific re-relocation fixup and is a no-op on other
+ instruction sets. This is used to re-relocated the image into the EFI virtual
+ space for runtime calls.
+
+ @param[in] Reloc The pointer to the relocation record.
+ @param[in, out] Fixup The pointer to the address to fix up.
+ @param[in, out] FixupData The pointer to a buffer to log the fixups.
+ @param[in] Adjust The offset to adjust the fixup.
+
+ @return Status code.
+
+**/
+RETURN_STATUS
+PeHotRelocateImageEx (
+ IN UINT16 *Reloc,
+ IN OUT CHAR8 *Fixup,
+ IN OUT CHAR8 **FixupData,
+ IN UINT64 Adjust
+ )
+{
+ // To check
+ return PeCoffLoaderRelocateImageEx (Reloc, Fixup, FixupData, Adjust);
+}
--
2.27.0
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