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-rw-r--r--arch/powerpc/include/asm/syscalls_32.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/syscalls_32.h b/arch/powerpc/include/asm/syscalls_32.h
new file mode 100644
index 000000000..749255568
--- /dev/null
+++ b/arch/powerpc/include/asm/syscalls_32.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef _ASM_POWERPC_SYSCALLS_32_H
+#define _ASM_POWERPC_SYSCALLS_32_H
+
+#include <linux/compat.h>
+#include <asm/siginfo.h>
+#include <asm/signal.h>
+
+/*
+ * Data types and macros for providing 32b PowerPC support.
+ */
+
+/* These are here to support 32-bit syscalls on a 64-bit kernel. */
+
+struct pt_regs32 {
+ unsigned int gpr[32];
+ unsigned int nip;
+ unsigned int msr;
+ unsigned int orig_gpr3; /* Used for restarting system calls */
+ unsigned int ctr;
+ unsigned int link;
+ unsigned int xer;
+ unsigned int ccr;
+ unsigned int mq; /* 601 only (not used at present) */
+ unsigned int trap; /* Reason for being here */
+ unsigned int dar; /* Fault registers */
+ unsigned int dsisr;
+ unsigned int result; /* Result of a system call */
+};
+
+struct sigcontext32 {
+ unsigned int _unused[4];
+ int signal;
+ compat_uptr_t handler;
+ unsigned int oldmask;
+ compat_uptr_t regs; /* 4 byte pointer to the pt_regs32 structure. */
+};
+
+struct mcontext32 {
+ elf_gregset_t32 mc_gregs;
+ elf_fpregset_t mc_fregs;
+ unsigned int mc_pad[2];
+ elf_vrregset_t32 mc_vregs __attribute__((__aligned__(16)));
+ elf_vsrreghalf_t32 mc_vsregs __attribute__((__aligned__(16)));
+};
+
+struct ucontext32 {
+ unsigned int uc_flags;
+ unsigned int uc_link;
+ compat_stack_t uc_stack;
+ int uc_pad[7];
+ compat_uptr_t uc_regs; /* points to uc_mcontext field */
+ compat_sigset_t uc_sigmask; /* mask last for extensibility */
+ /* glibc has 1024-bit signal masks, ours are 64-bit */
+ int uc_maskext[30];
+ int uc_pad2[3];
+ struct mcontext32 uc_mcontext;
+};
+
+#endif // _ASM_POWERPC_SYSCALLS_32_H