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For mipsn32 (TARGET_ABI32=y, TARGET_LONG_BITS=64): abi_ulong = uint32_t (4 bytes) — for pointers and ABI-sized fields target_ulong = uint64_t (8 bytes) — for general-purpose registers linux-user/elfload.c allocates target_elf_prstatus using the mips64/target_elf.h definition where target_elf_gregset_t has target_ulong reserved[45] (8 bytes each, 360 bytes total). However, in linux-user/mips64/elfload.c, #include "target_elf.h" inside the included mips/elfload.c resolves to mips/target_elf.h (compiler searches the file's own directory first), where the union uses abi_ulong reserved[45]. For mipsn32 this gives 4-byte entries (180 bytes), not the 8-byte entries (360 bytes) that elfload.c actually allocated. Writing via r->reserved[34] therefore lands at byte offset 34*4=136 instead of the correct 34*8=272, silently zeroing the EPC in the core file. Fix by casting the pointer to target_ulong * so writes always use 8-byte slots and land at the offsets matching the allocated layout. This does not change behavior for mips64 (N64) where abi_ulong already equals target_ulong (both 8 bytes). Signed-off-by: Matt Turner <mattst88@gmail.com> Cc: qemu-stable@nongnu.org Signed-off-by: Helge Deller <deller@gmx.de>