diff options
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/elfload.c | 41 | ||||
| -rw-r--r-- | linux-user/main.c | 100 | ||||
| -rw-r--r-- | linux-user/signal.c | 229 | ||||
| -rw-r--r-- | linux-user/syscall.c | 2 | ||||
| -rw-r--r-- | linux-user/syscall_defs.h | 40 |
5 files changed, 408 insertions, 4 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c index f3b1552..6b622d4 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -787,6 +787,47 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMBState *env #endif /* TARGET_MICROBLAZE */ +#ifdef TARGET_OPENRISC + +#define ELF_START_MMAP 0x08000000 + +#define elf_check_arch(x) ((x) == EM_OPENRISC) + +#define ELF_ARCH EM_OPENRISC +#define ELF_CLASS ELFCLASS32 +#define ELF_DATA ELFDATA2MSB + +static inline void init_thread(struct target_pt_regs *regs, + struct image_info *infop) +{ + regs->pc = infop->entry; + regs->gpr[1] = infop->start_stack; +} + +#define USE_ELF_CORE_DUMP +#define ELF_EXEC_PAGESIZE 8192 + +/* See linux kernel arch/openrisc/include/asm/elf.h. */ +#define ELF_NREG 34 /* gprs and pc, sr */ +typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; + +static void elf_core_copy_regs(target_elf_gregset_t *regs, + const CPUOpenRISCState *env) +{ + int i; + + for (i = 0; i < 32; i++) { + (*regs)[i] = tswapl(env->gpr[i]); + } + + (*regs)[32] = tswapl(env->pc); + (*regs)[33] = tswapl(env->sr); +} +#define ELF_HWCAP 0 +#define ELF_PLATFORM NULL + +#endif /* TARGET_OPENRISC */ + #ifdef TARGET_SH4 #define ELF_START_MMAP 0x80000000 diff --git a/linux-user/main.c b/linux-user/main.c index d0e0e4f..a0ab8e8 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -2306,6 +2306,93 @@ done_syscall: } #endif +#ifdef TARGET_OPENRISC + +void cpu_loop(CPUOpenRISCState *env) +{ + int trapnr, gdbsig; + + for (;;) { + trapnr = cpu_exec(env); + gdbsig = 0; + + switch (trapnr) { + case EXCP_RESET: + qemu_log("\nReset request, exit, pc is %#x\n", env->pc); + exit(1); + break; + case EXCP_BUSERR: + qemu_log("\nBus error, exit, pc is %#x\n", env->pc); + gdbsig = SIGBUS; + break; + case EXCP_DPF: + case EXCP_IPF: + cpu_dump_state(env, stderr, fprintf, 0); + gdbsig = TARGET_SIGSEGV; + break; + case EXCP_TICK: + qemu_log("\nTick time interrupt pc is %#x\n", env->pc); + break; + case EXCP_ALIGN: + qemu_log("\nAlignment pc is %#x\n", env->pc); + gdbsig = SIGBUS; + break; + case EXCP_ILLEGAL: + qemu_log("\nIllegal instructionpc is %#x\n", env->pc); + gdbsig = SIGILL; + break; + case EXCP_INT: + qemu_log("\nExternal interruptpc is %#x\n", env->pc); + break; + case EXCP_DTLBMISS: + case EXCP_ITLBMISS: + qemu_log("\nTLB miss\n"); + break; + case EXCP_RANGE: + qemu_log("\nRange\n"); + gdbsig = SIGSEGV; + break; + case EXCP_SYSCALL: + env->pc += 4; /* 0xc00; */ + env->gpr[11] = do_syscall(env, + env->gpr[11], /* return value */ + env->gpr[3], /* r3 - r7 are params */ + env->gpr[4], + env->gpr[5], + env->gpr[6], + env->gpr[7], + env->gpr[8], 0, 0); + break; + case EXCP_FPE: + qemu_log("\nFloating point error\n"); + break; + case EXCP_TRAP: + qemu_log("\nTrap\n"); + gdbsig = SIGTRAP; + break; + case EXCP_NR: + qemu_log("\nNR\n"); + break; + default: + qemu_log("\nqemu: unhandled CPU exception %#x - aborting\n", + trapnr); + cpu_dump_state(env, stderr, fprintf, 0); + gdbsig = TARGET_SIGILL; + break; + } + if (gdbsig) { + gdb_handlesig(env, gdbsig); + if (gdbsig != TARGET_SIGTRAP) { + exit(1); + } + } + + process_pending_signals(env); + } +} + +#endif /* TARGET_OPENRISC */ + #ifdef TARGET_SH4 void cpu_loop(CPUSH4State *env) { @@ -3386,6 +3473,8 @@ int main(int argc, char **argv, char **envp) #else cpu_model = "24Kf"; #endif +#elif defined TARGET_OPENRISC + cpu_model = "or1200"; #elif defined(TARGET_PPC) #ifdef TARGET_PPC64 cpu_model = "970fx"; @@ -3788,6 +3877,17 @@ int main(int argc, char **argv, char **envp) env->hflags |= MIPS_HFLAG_M16; } } +#elif defined(TARGET_OPENRISC) + { + int i; + + for (i = 0; i < 32; i++) { + env->gpr[i] = regs->gpr[i]; + } + + env->sr = regs->sr; + env->pc = regs->pc; + } #elif defined(TARGET_SH4) { int i; diff --git a/linux-user/signal.c b/linux-user/signal.c index 43346dc..97f30d9 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -3629,6 +3629,235 @@ long do_rt_sigreturn(CPUCRISState *env) return -TARGET_ENOSYS; } +#elif defined(TARGET_OPENRISC) + +struct target_sigcontext { + struct target_pt_regs regs; + abi_ulong oldmask; + abi_ulong usp; +}; + +struct target_ucontext { + abi_ulong tuc_flags; + abi_ulong tuc_link; + target_stack_t tuc_stack; + struct target_sigcontext tuc_mcontext; + target_sigset_t tuc_sigmask; /* mask last for extensibility */ +}; + +struct target_rt_sigframe { + abi_ulong pinfo; + uint64_t puc; + struct target_siginfo info; + struct target_sigcontext sc; + struct target_ucontext uc; + unsigned char retcode[16]; /* trampoline code */ +}; + +/* This is the asm-generic/ucontext.h version */ +#if 0 +static int restore_sigcontext(CPUOpenRISCState *regs, + struct target_sigcontext *sc) +{ + unsigned int err = 0; + unsigned long old_usp; + + /* Alwys make any pending restarted system call return -EINTR */ + current_thread_info()->restart_block.fn = do_no_restart_syscall; + + /* restore the regs from &sc->regs (same as sc, since regs is first) + * (sc is already checked for VERIFY_READ since the sigframe was + * checked in sys_sigreturn previously) + */ + + if (copy_from_user(regs, &sc, sizeof(struct target_pt_regs))) { + goto badframe; + } + + /* make sure the U-flag is set so user-mode cannot fool us */ + + regs->sr &= ~SR_SM; + + /* restore the old USP as it was before we stacked the sc etc. + * (we cannot just pop the sigcontext since we aligned the sp and + * stuff after pushing it) + */ + + err |= __get_user(old_usp, &sc->usp); + phx_signal("old_usp 0x%lx", old_usp); + + __PHX__ REALLY /* ??? */ + wrusp(old_usp); + regs->gpr[1] = old_usp; + + /* TODO: the other ports use regs->orig_XX to disable syscall checks + * after this completes, but we don't use that mechanism. maybe we can + * use it now ? + */ + + return err; + +badframe: + return 1; +} +#endif + +/* Set up a signal frame. */ + +static int setup_sigcontext(struct target_sigcontext *sc, + CPUOpenRISCState *regs, + unsigned long mask) +{ + int err = 0; + unsigned long usp = regs->gpr[1]; + + /* copy the regs. they are first in sc so we can use sc directly */ + + /*err |= copy_to_user(&sc, regs, sizeof(struct target_pt_regs));*/ + + /* Set the frametype to CRIS_FRAME_NORMAL for the execution of + the signal handler. The frametype will be restored to its previous + value in restore_sigcontext. */ + /*regs->frametype = CRIS_FRAME_NORMAL;*/ + + /* then some other stuff */ + err |= __put_user(mask, &sc->oldmask); + err |= __put_user(usp, &sc->usp); return err; +} + +static inline unsigned long align_sigframe(unsigned long sp) +{ + unsigned long i; + i = sp & ~3UL; + return i; +} + +static inline abi_ulong get_sigframe(struct target_sigaction *ka, + CPUOpenRISCState *regs, + size_t frame_size) +{ + unsigned long sp = regs->gpr[1]; + int onsigstack = on_sig_stack(sp); + + /* redzone */ + /* This is the X/Open sanctioned signal stack switching. */ + if ((ka->sa_flags & SA_ONSTACK) != 0 && !onsigstack) { + sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size; + } + + sp = align_sigframe(sp - frame_size); + + /* + * If we are on the alternate signal stack and would overflow it, don't. + * Return an always-bogus address instead so we will die with SIGSEGV. + */ + + if (onsigstack && !likely(on_sig_stack(sp))) { + return -1L; + } + + return sp; +} + +static void setup_frame(int sig, struct target_sigaction *ka, + target_sigset_t *set, CPUOpenRISCState *env) +{ + qemu_log("Not implement.\n"); +} + +static void setup_rt_frame(int sig, struct target_sigaction *ka, + target_siginfo_t *info, + target_sigset_t *set, CPUOpenRISCState *env) +{ + int err = 0; + abi_ulong frame_addr; + unsigned long return_ip; + struct target_rt_sigframe *frame; + abi_ulong info_addr, uc_addr; + + frame_addr = get_sigframe(ka, env, sizeof *frame); + + frame_addr = get_sigframe(ka, env, sizeof(*frame)); + if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) { + goto give_sigsegv; + } + + info_addr = frame_addr + offsetof(struct target_rt_sigframe, info); + err |= __put_user(info_addr, &frame->pinfo); + uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc); + err |= __put_user(uc_addr, &frame->puc); + + if (ka->sa_flags & SA_SIGINFO) { + err |= copy_siginfo_to_user(&frame->info, info); + } + if (err) { + goto give_sigsegv; + } + + /*err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));*/ + err |= __put_user(0, &frame->uc.tuc_flags); + err |= __put_user(0, &frame->uc.tuc_link); + err |= __put_user(target_sigaltstack_used.ss_sp, + &frame->uc.tuc_stack.ss_sp); + err |= __put_user(sas_ss_flags(env->gpr[1]), &frame->uc.tuc_stack.ss_flags); + err |= __put_user(target_sigaltstack_used.ss_size, + &frame->uc.tuc_stack.ss_size); + err |= setup_sigcontext(&frame->sc, env, set->sig[0]); + + /*err |= copy_to_user(frame->uc.tuc_sigmask, set, sizeof(*set));*/ + + if (err) { + goto give_sigsegv; + } + + /* trampoline - the desired return ip is the retcode itself */ + return_ip = (unsigned long)&frame->retcode; + /* This is l.ori r11,r0,__NR_sigreturn, l.sys 1 */ + err |= __put_user(0xa960, (short *)(frame->retcode + 0)); + err |= __put_user(TARGET_NR_rt_sigreturn, (short *)(frame->retcode + 2)); + err |= __put_user(0x20000001, (unsigned long *)(frame->retcode + 4)); + err |= __put_user(0x15000000, (unsigned long *)(frame->retcode + 8)); + + if (err) { + goto give_sigsegv; + } + + /* TODO what is the current->exec_domain stuff and invmap ? */ + + /* Set up registers for signal handler */ + env->pc = (unsigned long)ka->_sa_handler; /* what we enter NOW */ + env->gpr[9] = (unsigned long)return_ip; /* what we enter LATER */ + env->gpr[3] = (unsigned long)sig; /* arg 1: signo */ + env->gpr[4] = (unsigned long)&frame->info; /* arg 2: (siginfo_t*) */ + env->gpr[5] = (unsigned long)&frame->uc; /* arg 3: ucontext */ + + /* actually move the usp to reflect the stacked frame */ + env->gpr[1] = (unsigned long)frame; + + return; + +give_sigsegv: + unlock_user_struct(frame, frame_addr, 1); + if (sig == TARGET_SIGSEGV) { + ka->_sa_handler = TARGET_SIG_DFL; + } + force_sig(TARGET_SIGSEGV); +} + +long do_sigreturn(CPUOpenRISCState *env) +{ + + qemu_log("do_sigreturn: not implemented\n"); + return -TARGET_ENOSYS; +} + +long do_rt_sigreturn(CPUOpenRISCState *env) +{ + qemu_log("do_rt_sigreturn: not implemented\n"); + return -TARGET_ENOSYS; +} +/* TARGET_OPENRISC */ + #elif defined(TARGET_S390X) #define __NUM_GPRS 16 diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 539af3f..630a455 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -7377,7 +7377,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, case TARGET_NR_sigaltstack: #if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_MIPS) || \ defined(TARGET_SPARC) || defined(TARGET_PPC) || defined(TARGET_ALPHA) || \ - defined(TARGET_M68K) || defined(TARGET_S390X) + defined(TARGET_M68K) || defined(TARGET_S390X) || defined(TARGET_OPENRISC) ret = do_sigaltstack(arg1, arg2, get_sp_from_cpustate((CPUArchState *)cpu_env)); break; #else diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index a79b67d..cfece21 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -59,7 +59,7 @@ #if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SH4) \ || defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_UNICORE32) \ - || defined(TARGET_S390X) + || defined(TARGET_S390X) || defined(TARGET_OPENRISC) #define TARGET_IOC_SIZEBITS 14 #define TARGET_IOC_DIRBITS 2 @@ -323,7 +323,7 @@ int do_sigaction(int sig, const struct target_sigaction *act, || defined(TARGET_PPC) || defined(TARGET_MIPS) || defined(TARGET_SH4) \ || defined(TARGET_M68K) || defined(TARGET_ALPHA) || defined(TARGET_CRIS) \ || defined(TARGET_MICROBLAZE) || defined(TARGET_UNICORE32) \ - || defined(TARGET_S390X) + || defined(TARGET_S390X) || defined(TARGET_OPENRISC) #if defined(TARGET_SPARC) #define TARGET_SA_NOCLDSTOP 8u @@ -344,6 +344,14 @@ int do_sigaction(int sig, const struct target_sigaction *act, #if !defined(TARGET_ABI_MIPSN32) && !defined(TARGET_ABI_MIPSN64) #define TARGET_SA_RESTORER 0x04000000 /* Only for O32 */ #endif +#elif defined(TARGET_OPENRISC) +#define TARGET_SA_NOCLDSTOP 0x00000001 +#define TARGET_SA_NOCLDWAIT 0x00000002 +#define TARGET_SA_SIGINFO 0x00000004 +#define TARGET_SA_ONSTACK 0x08000000 +#define TARGET_SA_RESTART 0x10000000 +#define TARGET_SA_NODEFER 0x40000000 +#define TARGET_SA_RESETHAND 0x80000000 #elif defined(TARGET_ALPHA) #define TARGET_SA_ONSTACK 0x00000001 #define TARGET_SA_RESTART 0x00000002 @@ -448,6 +456,7 @@ int do_sigaction(int sig, const struct target_sigaction *act, #else +/* OpenRISC Using the general signals */ #define TARGET_SIGHUP 1 #define TARGET_SIGINT 2 #define TARGET_SIGQUIT 3 @@ -1086,7 +1095,8 @@ struct target_winsize { #endif #if (defined(TARGET_I386) && defined(TARGET_ABI32)) || defined(TARGET_ARM) \ - || defined(TARGET_CRIS) || defined(TARGET_UNICORE32) + || defined(TARGET_CRIS) || defined(TARGET_UNICORE32) \ + || defined(TARGET_OPENRISC) struct target_stat { unsigned short st_dev; unsigned short __pad1; @@ -1783,6 +1793,30 @@ struct target_stat { abi_long st_blocks; abi_ulong __unused[3]; }; +#elif defined(TARGET_OPENRISC) +struct target_stat { + abi_ulong st_dev; + abi_ulong st_ino; + abi_ulong st_nlink; + + unsigned int st_mode; + unsigned int st_uid; + unsigned int st_gid; + unsigned int __pad0; + abi_ulong st_rdev; + abi_long st_size; + abi_long st_blksize; + abi_long st_blocks; /* Number 512-byte blocks allocated. */ + + abi_ulong target_st_atime; + abi_ulong target_st_atime_nsec; + abi_ulong target_st_mtime; + abi_ulong target_st_mtime_nsec; + abi_ulong target_st_ctime; + abi_ulong target_st_ctime_nsec; + + abi_long __unused[3]; +}; #else #error unsupported CPU #endif |