fix ppc and mips for bin2obj

1 files changed, 27 insertions, 0 deletions

diff --git a/core/src/xmake/binutils/elf/prefix.h b/core/src/xmake/binutils/elf/prefix.h
index 49c53c6c7..c26d678d2 100644
--- a/core/src/xmake/binutils/elf/prefix.h
+++ b/core/src/xmake/binutils/elf/prefix.h
@@ -69,6 +69,14 @@
 #define XM_EF_LOONGARCH_ABI_DOUBLE_FLOAT 0x3
 #define XM_EF_LOONGARCH_OBJABI_V1        0x40
 
+// PowerPC64 e_flags: the ELF ABI version is stored in the low 2 bits (see bfd/elf64-ppc.c)
+#define XM_EF_PPC64_ABI_V1               0x1
+#define XM_EF_PPC64_ABI_V2               0x2
+
+// MIPS e_flags (binutils include/elf/mips.h)
+#define XM_EF_MIPS_CPIC                  0x00000004 // call-PIC: linkable with both PIC and non-PIC objects
+#define XM_EF_MIPS_ABI_O32               0x00001000 // the original 32-bit "o32" ABI
+
 #define XM_ELF_SHT_PROGBITS      0x1
 #define XM_ELF_SHT_SYMTAB        0x2
 #define XM_ELF_SHT_STRTAB        0x3
@@ -341,6 +349,25 @@ static __tb_inline__ tb_uint32_t xm_binutils_elf_get_flags(tb_char_t const *arch
     else if (tb_strncmp(arch, "loongarch", 9) == 0 || tb_strncmp(arch, "loong64", 7) == 0) {
         return XM_EF_LOONGARCH_ABI_DOUBLE_FLOAT | XM_EF_LOONGARCH_OBJABI_V1;
     }
+    // PowerPC64: encode the ELF ABI version in e_flags.
+    // little-endian ppc64le uses the OpenPOWER ELFv2 ABI, big-endian ppc64 uses ELFv1,
+    // matching the gcc/clang defaults (-mabi=elfv2 on LE, -mabi=elfv1 on BE).
+    // 32-bit PowerPC does not carry an ABI version (e_flags == 0).
+    else if (tb_strncmp(arch, "ppc64", 5) == 0 || tb_strncmp(arch, "powerpc64", 9) == 0) {
+        return xm_binutils_arch_is_bigendian(arch)? XM_EF_PPC64_ABI_V1 : XM_EF_PPC64_ABI_V2;
+    }
+    // MIPS: mark the object as CPIC so it links against both PIC and non-PIC objects, and
+    // tag the 32-bit variants with the o32 ABI to match the common GNU toolchains (n64 is
+    // implied by ELFCLASS64, so mips64/mips64el carry no ABI bit). the ISA level (top nibble)
+    // and fp/NaN bits are left at 0 (== "any") on purpose: overclaiming them would make the
+    // linker reject otherwise-compatible objects.
+    else if (tb_strncmp(arch, "mips", 4) == 0) {
+        tb_uint32_t flags = XM_EF_MIPS_CPIC;
+        if (!xm_binutils_arch_is_64bit(arch)) {
+            flags |= XM_EF_MIPS_ABI_O32;
+        }
+        return flags;
+    }
     return 0;
 }