diff options
Diffstat (limited to 'arch/powerpc/kernel/ppc32.h')
| -rw-r--r-- | arch/powerpc/kernel/ppc32.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/ppc32.h b/arch/powerpc/kernel/ppc32.h new file mode 100644 index 000000000..2346f8c7f --- /dev/null +++ b/arch/powerpc/kernel/ppc32.h @@ -0,0 +1,60 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef _PPC64_PPC32_H +#define _PPC64_PPC32_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 /* _PPC64_PPC32_H */ |