riscv: efi: Generate Microsoft PE format compliant images
Per Microsoft PE Format documentation [1], PointerToSymbolTable and
NumberOfSymbols should be zero for an image in the COFF file header.
Currently the COFF file header is hardcoded on RISC-V and these two
members are not zero.
This updates the hardcoded structure to clear these two members, as
well as setting the flag IMAGE_FILE_LOCAL_SYMS_STRIPPED so that we
can generate compliant *.efi images.
[1] https://docs.microsoft.com/zh-cn/windows/desktop/Debug/pe-format
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/arch/riscv/lib/crt0_riscv_efi.S b/arch/riscv/lib/crt0_riscv_efi.S
index 18f61f5..b7b5329 100644
--- a/arch/riscv/lib/crt0_riscv_efi.S
+++ b/arch/riscv/lib/crt0_riscv_efi.S
@@ -41,13 +41,13 @@
.short 2 /* nr_sections */
.long 0 /* TimeDateStamp */
.long 0 /* PointerToSymbolTable */
- .long 1 /* NumberOfSymbols */
+ .long 0 /* NumberOfSymbols */
.short section_table - optional_header /* SizeOfOptionalHeader */
- /*
- * Characteristics: IMAGE_FILE_DEBUG_STRIPPED |
- * IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_LINE_NUMS_STRIPPED
- */
- .short 0x206
+ /* Characteristics */
+ .short (IMAGE_FILE_EXECUTABLE_IMAGE | \
+ IMAGE_FILE_LINE_NUMS_STRIPPED | \
+ IMAGE_FILE_LOCAL_SYMS_STRIPPED | \
+ IMAGE_FILE_DEBUG_STRIPPED)
optional_header:
.short 0x20b /* PE32+ format */
.byte 0x02 /* MajorLinkerVersion */