diff options
Diffstat (limited to 'arch/sparc64/kernel/binfmt_elf32.c')
| -rw-r--r-- | arch/sparc64/kernel/binfmt_elf32.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/binfmt_elf32.c b/arch/sparc64/kernel/binfmt_elf32.c new file mode 100644 index 000000000000..a1a12d2aa353 --- /dev/null +++ b/arch/sparc64/kernel/binfmt_elf32.c @@ -0,0 +1,159 @@ +/* + * binfmt_elf32.c: Support 32-bit Sparc ELF binaries on Ultra. + * + * Copyright (C) 1995, 1996, 1997, 1998 David S. Miller (davem@redhat.com) + * Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek (jj@ultra.linux.cz) + */ + +#define ELF_ARCH EM_SPARC +#define ELF_CLASS ELFCLASS32 +#define ELF_DATA ELFDATA2MSB; + +/* For the most part we present code dumps in the format + * Solaris does. + */ +typedef unsigned int elf_greg_t; +#define ELF_NGREG 38 +typedef elf_greg_t elf_gregset_t[ELF_NGREG]; + +/* Format is: + * G0 --> G7 + * O0 --> O7 + * L0 --> L7 + * I0 --> I7 + * PSR, PC, nPC, Y, WIM, TBR + */ +#include <asm/psrcompat.h> +#define ELF_CORE_COPY_REGS(__elf_regs, __pt_regs) \ +do { unsigned int *dest = &(__elf_regs[0]); \ + struct pt_regs *src = (__pt_regs); \ + unsigned int __user *sp; \ + int i; \ + for(i = 0; i < 16; i++) \ + dest[i] = (unsigned int) src->u_regs[i];\ + /* Don't try this at home kids... */ \ + sp = (unsigned int __user *) (src->u_regs[14] & \ + 0x00000000fffffffc); \ + for(i = 0; i < 16; i++) \ + __get_user(dest[i+16], &sp[i]); \ + dest[32] = tstate_to_psr(src->tstate); \ + dest[33] = (unsigned int) src->tpc; \ + dest[34] = (unsigned int) src->tnpc; \ + dest[35] = src->y; \ + dest[36] = dest[37] = 0; /* XXX */ \ +} while(0); + +typedef struct { + union { + unsigned int pr_regs[32]; + unsigned long pr_dregs[16]; + } pr_fr; + unsigned int __unused; + unsigned int pr_fsr; + unsigned char pr_qcnt; + unsigned char pr_q_entrysize; + unsigned char pr_en; + unsigned int pr_q[64]; +} elf_fpregset_t; + +/* UltraSparc extensions. Still unused, but will be eventually. */ +typedef struct { + unsigned int pr_type; + unsigned int pr_align; + union { + struct { + union { + unsigned int pr_regs[32]; + unsigned long pr_dregs[16]; + long double pr_qregs[8]; + } pr_xfr; + } pr_v8p; + unsigned int pr_xfsr; + unsigned int pr_fprs; + unsigned int pr_xg[8]; + unsigned int pr_xo[8]; + unsigned long pr_tstate; + unsigned int pr_filler[8]; + } pr_un; +} elf_xregset_t; + +#define elf_check_arch(x) (((x)->e_machine == EM_SPARC) || ((x)->e_machine == EM_SPARC32PLUS)) + +#define ELF_ET_DYN_BASE 0x70000000 + + +#include <asm/processor.h> +#include <linux/module.h> +#include <linux/config.h> +#include <linux/elfcore.h> +#include <linux/compat.h> + +#define elf_prstatus elf_prstatus32 +struct elf_prstatus32 +{ + struct elf_siginfo pr_info; /* Info associated with signal */ + short pr_cursig; /* Current signal */ + unsigned int pr_sigpend; /* Set of pending signals */ + unsigned int pr_sighold; /* Set of held signals */ + pid_t pr_pid; + pid_t pr_ppid; + pid_t pr_pgrp; + pid_t pr_sid; + struct compat_timeval pr_utime; /* User time */ + struct compat_timeval pr_stime; /* System time */ + struct compat_timeval pr_cutime; /* Cumulative user time */ + struct compat_timeval pr_cstime; /* Cumulative system time */ + elf_gregset_t pr_reg; /* GP registers */ + int pr_fpvalid; /* True if math co-processor being used. */ +}; + +#define elf_prpsinfo elf_prpsinfo32 +struct elf_prpsinfo32 +{ + char pr_state; /* numeric process state */ + char pr_sname; /* char for pr_state */ + char pr_zomb; /* zombie */ + char pr_nice; /* nice val */ + unsigned int pr_flag; /* flags */ + u16 pr_uid; + u16 pr_gid; + pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid; + /* Lots missing */ + char pr_fname[16]; /* filename of executable */ + char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ +}; + +#include <linux/highuid.h> + +#undef NEW_TO_OLD_UID +#undef NEW_TO_OLD_GID +#define NEW_TO_OLD_UID(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid) +#define NEW_TO_OLD_GID(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid) + +#include <linux/time.h> + +#undef cputime_to_timeval +#define cputime_to_timeval cputime_to_compat_timeval +static __inline__ void +cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value) +{ + unsigned long jiffies = cputime_to_jiffies(cputime); + value->tv_usec = (jiffies % HZ) * (1000000L / HZ); + value->tv_sec = jiffies / HZ; +} + +#define elf_addr_t u32 +#undef start_thread +#define start_thread start_thread32 +#define init_elf_binfmt init_elf32_binfmt + +MODULE_DESCRIPTION("Binary format loader for compatibility with 32bit SparcLinux binaries on the Ultra"); +MODULE_AUTHOR("Eric Youngdale, David S. Miller, Jakub Jelinek"); + +#undef MODULE_DESCRIPTION +#undef MODULE_AUTHOR + +#undef TASK_SIZE +#define TASK_SIZE 0xf0000000 + +#include "../../../fs/binfmt_elf.c" |