diff options
43 files changed, 797 insertions, 262 deletions
diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index f5e8592d4a..d71d04d338 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -2258,7 +2258,7 @@ int page_get_flags(target_ulong address) #ifndef PAGE_TARGET_STICKY #define PAGE_TARGET_STICKY 0 #endif -#define PAGE_STICKY (PAGE_ANON | PAGE_TARGET_STICKY) +#define PAGE_STICKY (PAGE_ANON | PAGE_PASSTHROUGH | PAGE_TARGET_STICKY) /* Modify the flags of a page and invalidate the code if necessary. The flag PAGE_WRITE_ORG is positioned automatically depending diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index 491629b9ba..16b7df41bf 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -262,6 +262,12 @@ extern const TargetPageBits target_page; #define PAGE_TARGET_1 0x0200 #define PAGE_TARGET_2 0x0400 +/* + * For linux-user, indicates that the page is mapped with the same semantics + * in both guest and host. + */ +#define PAGE_PASSTHROUGH 0x0800 + #if defined(CONFIG_USER_ONLY) void page_dump(FILE *f); diff --git a/linux-user/aarch64/target_mman.h b/linux-user/aarch64/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/aarch64/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/alpha/target_mman.h b/linux-user/alpha/target_mman.h new file mode 100644 index 0000000000..cd6e3d70a6 --- /dev/null +++ b/linux-user/alpha/target_mman.h @@ -0,0 +1,8 @@ +#ifndef ALPHA_TARGET_MMAN_H +#define ALPHA_TARGET_MMAN_H + +#define TARGET_MADV_DONTNEED 6 + +#include "../generic/target_mman.h" + +#endif diff --git a/linux-user/arm/target_mman.h b/linux-user/arm/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/arm/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/cpu_loop-common.h b/linux-user/cpu_loop-common.h index dc0042e4de..36ff5b14f2 100644 --- a/linux-user/cpu_loop-common.h +++ b/linux-user/cpu_loop-common.h @@ -27,9 +27,11 @@ do { \ CPUState *cs = env_cpu(env); \ fprintf(stderr, fmt , ## __VA_ARGS__); \ + fprintf(stderr, "Failing executable: %s\n", exec_path); \ cpu_dump_state(cs, stderr, 0); \ if (qemu_log_separate()) { \ qemu_log(fmt, ## __VA_ARGS__); \ + qemu_log("Failing executable: %s\n", exec_path); \ log_cpu_state(cs, 0); \ } \ } while (0) diff --git a/linux-user/cris/target_mman.h b/linux-user/cris/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/cris/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/elfload.c b/linux-user/elfload.c index ba5c4c02e5..20894b633f 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -1080,6 +1080,37 @@ static uint32_t get_elf_hwcap(void) #define elf_check_abi(x) (!((x) & EF_MIPS_ABI2)) #endif +#define ELF_BASE_PLATFORM get_elf_base_platform() + +#define MATCH_PLATFORM_INSN(_flags, _base_platform) \ + do { if ((cpu->env.insn_flags & (_flags)) == _flags) \ + { return _base_platform; } } while (0) + +static const char *get_elf_base_platform(void) +{ + MIPSCPU *cpu = MIPS_CPU(thread_cpu); + + /* 64 bit ISAs goes first */ + MATCH_PLATFORM_INSN(CPU_MIPS64R6, "mips64r6"); + MATCH_PLATFORM_INSN(CPU_MIPS64R5, "mips64r5"); + MATCH_PLATFORM_INSN(CPU_MIPS64R2, "mips64r2"); + MATCH_PLATFORM_INSN(CPU_MIPS64R1, "mips64"); + MATCH_PLATFORM_INSN(CPU_MIPS5, "mips5"); + MATCH_PLATFORM_INSN(CPU_MIPS4, "mips4"); + MATCH_PLATFORM_INSN(CPU_MIPS3, "mips3"); + + /* 32 bit ISAs */ + MATCH_PLATFORM_INSN(CPU_MIPS32R6, "mips32r6"); + MATCH_PLATFORM_INSN(CPU_MIPS32R5, "mips32r5"); + MATCH_PLATFORM_INSN(CPU_MIPS32R2, "mips32r2"); + MATCH_PLATFORM_INSN(CPU_MIPS32R1, "mips32"); + MATCH_PLATFORM_INSN(CPU_MIPS2, "mips2"); + + /* Fallback */ + return "mips"; +} +#undef MATCH_PLATFORM_INSN + static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop) { @@ -1776,6 +1807,10 @@ static inline void init_thread(struct target_pt_regs *regs, #endif /* TARGET_HEXAGON */ +#ifndef ELF_BASE_PLATFORM +#define ELF_BASE_PLATFORM (NULL) +#endif + #ifndef ELF_PLATFORM #define ELF_PLATFORM (NULL) #endif @@ -2096,9 +2131,15 @@ static abi_ulong setup_arg_pages(struct linux_binprm *bprm, if (size < STACK_LOWER_LIMIT) { size = STACK_LOWER_LIMIT; } - guard = TARGET_PAGE_SIZE; - if (guard < qemu_real_host_page_size()) { - guard = qemu_real_host_page_size(); + + if (STACK_GROWS_DOWN) { + guard = TARGET_PAGE_SIZE; + if (guard < qemu_real_host_page_size()) { + guard = qemu_real_host_page_size(); + } + } else { + /* no guard page for hppa target where stack grows upwards. */ + guard = 0; } prot = PROT_READ | PROT_WRITE; @@ -2118,7 +2159,6 @@ static abi_ulong setup_arg_pages(struct linux_binprm *bprm, info->stack_limit = error + guard; return info->stack_limit + size - sizeof(void *); } else { - target_mprotect(error + size, guard, PROT_NONE); info->stack_limit = error + size; return error; } @@ -2215,8 +2255,8 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc, int i; abi_ulong u_rand_bytes; uint8_t k_rand_bytes[16]; - abi_ulong u_platform; - const char *k_platform; + abi_ulong u_platform, u_base_platform; + const char *k_platform, *k_base_platform; const int n = sizeof(elf_addr_t); sp = p; @@ -2238,6 +2278,22 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc, } } + u_base_platform = 0; + k_base_platform = ELF_BASE_PLATFORM; + if (k_base_platform) { + size_t len = strlen(k_base_platform) + 1; + if (STACK_GROWS_DOWN) { + sp -= (len + n - 1) & ~(n - 1); + u_base_platform = sp; + /* FIXME - check return value of memcpy_to_target() for failure */ + memcpy_to_target(sp, k_base_platform, len); + } else { + memcpy_to_target(sp, k_base_platform, len); + u_base_platform = sp; + sp += len + 1; + } + } + u_platform = 0; k_platform = ELF_PLATFORM; if (k_platform) { @@ -2279,6 +2335,8 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc, } size = (DLINFO_ITEMS + 1) * 2; + if (k_base_platform) + size += 2; if (k_platform) size += 2; #ifdef DLINFO_ARCH_ITEMS @@ -2356,6 +2414,9 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc, NEW_AUX_ENT(AT_HWCAP2, (abi_ulong) ELF_HWCAP2); #endif + if (u_base_platform) { + NEW_AUX_ENT(AT_BASE_PLATFORM, u_base_platform); + } if (u_platform) { NEW_AUX_ENT(AT_PLATFORM, u_platform); } diff --git a/linux-user/generic/target_mman.h b/linux-user/generic/target_mman.h new file mode 100644 index 0000000000..1436a3c543 --- /dev/null +++ b/linux-user/generic/target_mman.h @@ -0,0 +1,92 @@ +#ifndef LINUX_USER_TARGET_MMAN_H +#define LINUX_USER_TARGET_MMAN_H + +#ifndef TARGET_MADV_NORMAL +#define TARGET_MADV_NORMAL 0 +#endif + +#ifndef TARGET_MADV_RANDOM +#define TARGET_MADV_RANDOM 1 +#endif + +#ifndef TARGET_MADV_SEQUENTIAL +#define TARGET_MADV_SEQUENTIAL 2 +#endif + +#ifndef TARGET_MADV_WILLNEED +#define TARGET_MADV_WILLNEED 3 +#endif + +#ifndef TARGET_MADV_DONTNEED +#define TARGET_MADV_DONTNEED 4 +#endif + +#ifndef TARGET_MADV_FREE +#define TARGET_MADV_FREE 8 +#endif + +#ifndef TARGET_MADV_REMOVE +#define TARGET_MADV_REMOVE 9 +#endif + +#ifndef TARGET_MADV_DONTFORK +#define TARGET_MADV_DONTFORK 10 +#endif + +#ifndef TARGET_MADV_DOFORK +#define TARGET_MADV_DOFORK 11 +#endif + +#ifndef TARGET_MADV_MERGEABLE +#define TARGET_MADV_MERGEABLE 12 +#endif + +#ifndef TARGET_MADV_UNMERGEABLE +#define TARGET_MADV_UNMERGEABLE 13 +#endif + +#ifndef TARGET_MADV_HUGEPAGE +#define TARGET_MADV_HUGEPAGE 14 +#endif + +#ifndef TARGET_MADV_NOHUGEPAGE +#define TARGET_MADV_NOHUGEPAGE 15 +#endif + +#ifndef TARGET_MADV_DONTDUMP +#define TARGET_MADV_DONTDUMP 16 +#endif + +#ifndef TARGET_MADV_DODUMP +#define TARGET_MADV_DODUMP 17 +#endif + +#ifndef TARGET_MADV_WIPEONFORK +#define TARGET_MADV_WIPEONFORK 18 +#endif + +#ifndef TARGET_MADV_KEEPONFORK +#define TARGET_MADV_KEEPONFORK 19 +#endif + +#ifndef TARGET_MADV_COLD +#define TARGET_MADV_COLD 20 +#endif + +#ifndef TARGET_MADV_PAGEOUT +#define TARGET_MADV_PAGEOUT 21 +#endif + +#ifndef TARGET_MADV_POPULATE_READ +#define TARGET_MADV_POPULATE_READ 22 +#endif + +#ifndef TARGET_MADV_POPULATE_WRITE +#define TARGET_MADV_POPULATE_WRITE 23 +#endif + +#ifndef TARGET_MADV_DONTNEED_LOCKED +#define TARGET_MADV_DONTNEED_LOCKED 24 +#endif + +#endif diff --git a/linux-user/hexagon/target_mman.h b/linux-user/hexagon/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/hexagon/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/hppa/cpu_loop.c b/linux-user/hppa/cpu_loop.c index 64263c3dc4..1ef3b46191 100644 --- a/linux-user/hppa/cpu_loop.c +++ b/linux-user/hppa/cpu_loop.c @@ -147,12 +147,15 @@ void cpu_loop(CPUHPPAState *env) force_sig_fault(TARGET_SIGSEGV, TARGET_SEGV_MAPERR, env->iaoq_f); break; case EXCP_ILL: + EXCP_DUMP(env, "qemu: got CPU exception 0x%x - aborting\n", trapnr); force_sig_fault(TARGET_SIGILL, TARGET_ILL_ILLOPN, env->iaoq_f); break; case EXCP_PRIV_OPR: + EXCP_DUMP(env, "qemu: got CPU exception 0x%x - aborting\n", trapnr); force_sig_fault(TARGET_SIGILL, TARGET_ILL_PRVOPC, env->iaoq_f); break; case EXCP_PRIV_REG: + EXCP_DUMP(env, "qemu: got CPU exception 0x%x - aborting\n", trapnr); force_sig_fault(TARGET_SIGILL, TARGET_ILL_PRVREG, env->iaoq_f); break; case EXCP_OVERFLOW: @@ -171,7 +174,8 @@ void cpu_loop(CPUHPPAState *env) /* just indicate that signals should be handled asap */ break; default: - g_assert_not_reached(); + EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n", trapnr); + abort(); } process_pending_signals(env); } diff --git a/linux-user/hppa/signal.c b/linux-user/hppa/signal.c index 962f551c04..f253a15864 100644 --- a/linux-user/hppa/signal.c +++ b/linux-user/hppa/signal.c @@ -41,7 +41,7 @@ struct target_ucontext { }; struct target_rt_sigframe { - abi_uint tramp[9]; + abi_uint tramp[2]; /* syscall restart return address */ target_siginfo_t info; struct target_ucontext uc; /* hidden location of upper halves of pa2.0 64-bit gregs */ @@ -49,23 +49,13 @@ struct target_rt_sigframe { static void setup_sigcontext(struct target_sigcontext *sc, CPUArchState *env) { - int flags = 0; int i; - /* ??? if on_sig_stack, flags |= 1 (PARISC_SC_FLAG_ONSTACK). */ - - if (env->iaoq_f < TARGET_PAGE_SIZE) { - /* In the gateway page, executing a syscall. */ - flags |= 2; /* PARISC_SC_FLAG_IN_SYSCALL */ - __put_user(env->gr[31], &sc->sc_iaoq[0]); - __put_user(env->gr[31] + 4, &sc->sc_iaoq[1]); - } else { - __put_user(env->iaoq_f, &sc->sc_iaoq[0]); - __put_user(env->iaoq_b, &sc->sc_iaoq[1]); - } + __put_user(env->iaoq_f, &sc->sc_iaoq[0]); + __put_user(env->iaoq_b, &sc->sc_iaoq[1]); __put_user(0, &sc->sc_iasq[0]); __put_user(0, &sc->sc_iasq[1]); - __put_user(flags, &sc->sc_flags); + __put_user(0, &sc->sc_flags); __put_user(cpu_hppa_get_psw(env), &sc->sc_gr[0]); for (i = 1; i < 32; ++i) { @@ -101,9 +91,15 @@ static void restore_sigcontext(CPUArchState *env, struct target_sigcontext *sc) __get_user(env->cr[CR_SAR], &sc->sc_sar); } -/* No, this doesn't look right, but it's copied straight from the kernel. */ +#if TARGET_ABI_BITS == 32 +#define SIGFRAME 64 +#define FUNCTIONCALLFRAME 48 +#else +#define SIGFRAME 128 +#define FUNCTIONCALLFRAME 96 +#endif #define PARISC_RT_SIGFRAME_SIZE32 \ - ((sizeof(struct target_rt_sigframe) + 48 + 64) & -64) + ((sizeof(struct target_rt_sigframe) + FUNCTIONCALLFRAME + SIGFRAME) & -SIGFRAME) void setup_rt_frame(int sig, struct target_sigaction *ka, target_siginfo_t *info, @@ -118,7 +114,7 @@ void setup_rt_frame(int sig, struct target_sigaction *ka, if ((ka->sa_flags & TARGET_SA_ONSTACK) && !sas_ss_flags(sp)) { sp = (ts->sigaltstack_used.ss_sp + 0x7f) & ~0x3f; } - frame_addr = QEMU_ALIGN_UP(sp, 64); + frame_addr = QEMU_ALIGN_UP(sp, SIGFRAME); sp = frame_addr + PARISC_RT_SIGFRAME_SIZE32; trace_user_setup_rt_frame(env, frame_addr); @@ -139,14 +135,9 @@ void setup_rt_frame(int sig, struct target_sigaction *ka, setup_sigcontext(&frame->uc.tuc_mcontext, env); - __put_user(0x34190000, frame->tramp + 0); /* ldi 0,%r25 */ - __put_user(0x3414015a, frame->tramp + 1); /* ldi __NR_rt_sigreturn,%r20 */ - __put_user(0xe4008200, frame->tramp + 2); /* be,l 0x100(%sr2,%r0) */ - __put_user(0x08000240, frame->tramp + 3); /* nop */ - unlock_user_struct(frame, frame_addr, 1); - env->gr[2] = h2g(frame->tramp); + env->gr[2] = default_rt_sigreturn; env->gr[30] = sp; env->gr[26] = sig; env->gr[25] = h2g(&frame->info); @@ -197,3 +188,23 @@ long do_rt_sigreturn(CPUArchState *env) force_sig(TARGET_SIGSEGV); return -QEMU_ESIGRETURN; } + +void setup_sigtramp(abi_ulong sigtramp_page) +{ + uint32_t *tramp = lock_user(VERIFY_WRITE, sigtramp_page, 6*4, 0); + abi_ulong SIGFRAME_CONTEXT_REGS32; + assert(tramp != NULL); + + SIGFRAME_CONTEXT_REGS32 = offsetof(struct target_rt_sigframe, uc.tuc_mcontext); + SIGFRAME_CONTEXT_REGS32 -= PARISC_RT_SIGFRAME_SIZE32; + + __put_user(SIGFRAME_CONTEXT_REGS32, tramp + 0); + __put_user(0x08000240, tramp + 1); /* nop - b/c dwarf2 unwind routines */ + __put_user(0x34190000, tramp + 2); /* ldi 0, %r25 (in_syscall=0) */ + __put_user(0x3414015a, tramp + 3); /* ldi __NR_rt_sigreturn, %r20 */ + __put_user(0xe4008200, tramp + 4); /* ble 0x100(%sr2, %r0) */ + __put_user(0x08000240, tramp + 5); /* nop */ + + default_rt_sigreturn = (sigtramp_page + 8) | 3; + unlock_user(tramp, sigtramp_page, 6*4); +} diff --git a/linux-user/hppa/target_mman.h b/linux-user/hppa/target_mman.h new file mode 100644 index 0000000000..66dd9f7941 --- /dev/null +++ b/linux-user/hppa/target_mman.h @@ -0,0 +1,15 @@ +#ifndef HPPA_TARGET_MMAN_H +#define HPPA_TARGET_MMAN_H + +#define TARGET_MADV_MERGEABLE 65 +#define TARGET_MADV_UNMERGEABLE 66 +#define TARGET_MADV_HUGEPAGE 67 +#define TARGET_MADV_NOHUGEPAGE 68 +#define TARGET_MADV_DONTDUMP 69 +#define TARGET_MADV_DODUMP 70 +#define TARGET_MADV_WIPEONFORK 71 +#define TARGET_MADV_KEEPONFORK 72 + +#include "../generic/target_mman.h" + +#endif diff --git a/linux-user/hppa/target_signal.h b/linux-user/hppa/target_signal.h index af6c2fce58..190bb3d653 100644 --- a/linux-user/hppa/target_signal.h +++ b/linux-user/hppa/target_signal.h @@ -70,18 +70,6 @@ typedef struct target_sigaltstack { /* mask for all SS_xxx flags */ #define TARGET_SS_FLAG_BITS TARGET_SS_AUTODISARM -/* - * We cannot use a bare sigtramp page for hppa-linux. - * - * Unlike other guests where we use the instructions at PC to validate - * an offset from SP, the hppa libgcc signal frame fallback unwinding uses - * the PC address itself to find the frame. This is due to the fact that - * the hppa grows the stack upward, and the frame is of unknown size. - * - * TODO: We should be able to use a VDSO to address this, by providing - * proper unwind info for the sigtramp code, at which point the fallback - * unwinder will not be used. - */ -#define TARGET_ARCH_HAS_SIGTRAMP_PAGE 0 +#define TARGET_ARCH_HAS_SIGTRAMP_PAGE 1 #endif /* HPPA_TARGET_SIGNAL_H */ diff --git a/linux-user/hppa/target_syscall.h b/linux-user/hppa/target_syscall.h index 4b382c1fcf..9a8f8ca628 100644 --- a/linux-user/hppa/target_syscall.h +++ b/linux-user/hppa/target_syscall.h @@ -26,4 +26,6 @@ struct target_pt_regs { #define TARGET_MCL_FUTURE 2 #define TARGET_MCL_ONFAULT 4 +#define TARGET_DEFAULT_STACK_SIZE 80 * 1024 * 1024UL + #endif /* HPPA_TARGET_SYSCALL_H */ diff --git a/linux-user/i386/target_elf.h b/linux-user/i386/target_elf.h index 1c6142e7da..238a9aba73 100644 --- a/linux-user/i386/target_elf.h +++ b/linux-user/i386/target_elf.h @@ -9,6 +9,6 @@ #define I386_TARGET_ELF_H static inline const char *cpu_get_model(uint32_t eflags) { - return "qemu32"; + return "max"; } #endif diff --git a/linux-user/i386/target_mman.h b/linux-user/i386/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/i386/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/loongarch64/target_mman.h b/linux-user/loongarch64/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/loongarch64/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/m68k/target_mman.h b/linux-user/m68k/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/m68k/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/main.c b/linux-user/main.c index e44bdb17b8..88fccfe261 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -124,10 +124,14 @@ static void usage(int exitcode); static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; const char *qemu_uname_release; +#if !defined(TARGET_DEFAULT_STACK_SIZE) /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so we allocate a bigger stack. Need a better solution, for example by remapping the process stack directly at the right place */ -unsigned long guest_stack_size = 8 * 1024 * 1024UL; +#define TARGET_DEFAULT_STACK_SIZE 8 * 1024 * 1024UL +#endif + +unsigned long guest_stack_size = TARGET_DEFAULT_STACK_SIZE; /***********************************************************/ /* Helper routines for implementing atomic operations. */ @@ -668,7 +672,8 @@ int main(int argc, char **argv, char **envp) struct rlimit lim; if (getrlimit(RLIMIT_STACK, &lim) == 0 && lim.rlim_cur != RLIM_INFINITY - && lim.rlim_cur == (target_long)lim.rlim_cur) { + && lim.rlim_cur == (target_long)lim.rlim_cur + && lim.rlim_cur > guest_stack_size) { guest_stack_size = lim.rlim_cur; } } diff --git a/linux-user/microblaze/target_mman.h b/linux-user/microblaze/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/microblaze/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/mips/target_mman.h b/linux-user/mips/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/mips/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/mips64/target_mman.h b/linux-user/mips64/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/mips64/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 6a828e8418..28f3bc85ed 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -22,6 +22,7 @@ #include "qemu.h" #include "user-internals.h" #include "user-mmap.h" +#include "target_mman.h" static pthread_mutex_t mmap_mutex = PTHREAD_MUTEX_INITIALIZER; static __thread int mmap_lock_count; @@ -105,6 +106,8 @@ static int validate_prot_to_pageflags(int *host_prot, int prot) page_flags |= PAGE_MTE; } } +#elif defined(TARGET_HPPA) + valid |= PROT_GROWSDOWN | PROT_GROWSUP; #endif return prot & ~valid ? 0 : page_flags; @@ -253,8 +256,12 @@ static int mmap_frag(abi_ulong real_start, # define TASK_UNMAPPED_BASE (1ul << 38) #endif #else +#ifdef TARGET_HPPA +# define TASK_UNMAPPED_BASE 0xfa000000 +#else # define TASK_UNMAPPED_BASE 0x40000000 #endif +#endif abi_ulong mmap_next_start = TASK_UNMAPPED_BASE; unsigned long last_brk; @@ -426,7 +433,8 @@ abi_ulong mmap_find_vma(abi_ulong start, abi_ulong size, abi_ulong align) abi_long target_mmap(abi_ulong start, abi_ulong len, int target_prot, int flags, int fd, abi_ulong offset) { - abi_ulong ret, end, real_start, real_end, retaddr, host_offset, host_len; + abi_ulong ret, end, real_start, real_end, retaddr, host_offset, host_len, + passthrough_start = -1, passthrough_end = -1; int page_flags, host_prot; mmap_lock(); @@ -539,6 +547,8 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int target_prot, host_start += offset - host_offset; } start = h2g(host_start); + passthrough_start = start; + passthrough_end = start + len; } else { if (start & ~TARGET_PAGE_MASK) { errno = EINVAL; @@ -621,6 +631,8 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int target_prot, host_prot, flags, fd, offset1); if (p == MAP_FAILED) goto fail; + passthrough_start = real_start; + passthrough_end = real_end; } } the_end1: @@ -628,7 +640,18 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int target_prot, page_flags |= PAGE_ANON; } page_flags |= PAGE_RESET; - page_set_flags(start, start + len, page_flags); + if (passthrough_start == passthrough_end) { + page_set_flags(start, start + len, page_flags); + } else { + if (start < passthrough_start) { + page_set_flags(start, passthrough_start, page_flags); + } + page_set_flags(passthrough_start, passthrough_end, + page_flags | PAGE_PASSTHROUGH); + if (passthrough_end < start + len) { + page_set_flags(passthrough_end, start + len, page_flags); + } + } the_end: trace_target_mmap_complete(start); if (qemu_loglevel_mask(CPU_LOG_PAGE)) { @@ -847,7 +870,7 @@ static bool can_passthrough_madv_dontneed(abi_ulong start, abi_ulong end) } for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) { - if (!(page_get_flags(addr) & PAGE_ANON)) { + if (!(page_get_flags(addr) & PAGE_PASSTHROUGH)) { return false; } } @@ -889,11 +912,12 @@ abi_long target_madvise(abi_ulong start, abi_ulong len_in, int advice) * This is a hint, so ignoring and returning success is ok. * * This breaks MADV_DONTNEED, completely implementing which is quite - * complicated. However, there is one low-hanging fruit: host-page-aligned - * anonymous mappings. In this case passthrough is safe, so do it. + * complicated. However, there is one low-hanging fruit: mappings that are + * known to have the same semantics in the host and the guest. In this case + * passthrough is safe, so do it. */ mmap_lock(); - if (advice == MADV_DONTNEED && + if (advice == TARGET_MADV_DONTNEED && can_passthrough_madv_dontneed(start, end)) { ret = get_errno(madvise(g2h_untagged(start), len, MADV_DONTNEED)); if (ret == 0) { diff --git a/linux-user/nios2/target_mman.h b/linux-user/nios2/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/nios2/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/openrisc/target_mman.h b/linux-user/openrisc/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/openrisc/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/ppc/target_mman.h b/linux-user/ppc/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/ppc/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/riscv/target_mman.h b/linux-user/riscv/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/riscv/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/s390x/signal.c b/linux-user/s390x/signal.c index 4979c4b017..f72165576f 100644 --- a/linux-user/s390x/signal.c +++ b/linux-user/s390x/signal.c @@ -146,6 +146,7 @@ static void save_sigregs(CPUS390XState *env, target_sigregs *sregs) * We have to store the fp registers to current->thread.fp_regs * to merge them with the emulated registers. */ + __put_user(env->fpc, &sregs->fpregs.fpc); for (i = 0; i < 16; i++) { __put_user(*get_freg(env, i), &sregs->fpregs.fprs[i]); } @@ -331,6 +332,7 @@ static void restore_sigregs(CPUS390XState *env, target_sigregs *sc) for (i = 0; i < 16; i++) { __get_user(env->aregs[i], &sc->regs.acrs[i]); } + __get_user(env->fpc, &sc->fpregs.fpc); for (i = 0; i < 16; i++) { __get_user(*get_freg(env, i), &sc->fpregs.fprs[i]); } diff --git a/linux-user/s390x/target_mman.h b/linux-user/s390x/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/s390x/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/sh4/target_mman.h b/linux-user/sh4/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/sh4/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/signal-common.h b/linux-user/signal-common.h index 6a7e4a93fc..3e2dc604c2 100644 --- a/linux-user/signal-common.h +++ b/linux-user/signal-common.h @@ -118,4 +118,50 @@ static inline void finish_sigsuspend_mask(int ret) } } +#if defined(SIGSTKFLT) && defined(TARGET_SIGSTKFLT) +#define MAKE_SIG_ENTRY_SIGSTKFLT MAKE_SIG_ENTRY(SIGSTKFLT) +#else +#define MAKE_SIG_ENTRY_SIGSTKFLT +#endif + +#if defined(SIGIOT) && defined(TARGET_SIGIOT) +#define MAKE_SIG_ENTRY_SIGIOT MAKE_SIG_ENTRY(SIGIOT) +#else +#define MAKE_SIG_ENTRY_SIGIOT +#endif + +#define MAKE_SIGNAL_LIST \ + MAKE_SIG_ENTRY(SIGHUP) \ + MAKE_SIG_ENTRY(SIGINT) \ + MAKE_SIG_ENTRY(SIGQUIT) \ + MAKE_SIG_ENTRY(SIGILL) \ + MAKE_SIG_ENTRY(SIGTRAP) \ + MAKE_SIG_ENTRY(SIGABRT) \ + MAKE_SIG_ENTRY(SIGBUS) \ + MAKE_SIG_ENTRY(SIGFPE) \ + MAKE_SIG_ENTRY(SIGKILL) \ + MAKE_SIG_ENTRY(SIGUSR1) \ + MAKE_SIG_ENTRY(SIGSEGV) \ + MAKE_SIG_ENTRY(SIGUSR2) \ + MAKE_SIG_ENTRY(SIGPIPE) \ + MAKE_SIG_ENTRY(SIGALRM) \ + MAKE_SIG_ENTRY(SIGTERM) \ + MAKE_SIG_ENTRY(SIGCHLD) \ + MAKE_SIG_ENTRY(SIGCONT) \ + MAKE_SIG_ENTRY(SIGSTOP) \ + MAKE_SIG_ENTRY(SIGTSTP) \ + MAKE_SIG_ENTRY(SIGTTIN) \ + MAKE_SIG_ENTRY(SIGTTOU) \ + MAKE_SIG_ENTRY(SIGURG) \ + MAKE_SIG_ENTRY(SIGXCPU) \ + MAKE_SIG_ENTRY(SIGXFSZ) \ + MAKE_SIG_ENTRY(SIGVTALRM) \ + MAKE_SIG_ENTRY(SIGPROF) \ + MAKE_SIG_ENTRY(SIGWINCH) \ + MAKE_SIG_ENTRY(SIGIO) \ + MAKE_SIG_ENTRY(SIGPWR) \ + MAKE_SIG_ENTRY(SIGSYS) \ + MAKE_SIG_ENTRY_SIGSTKFLT \ + MAKE_SIG_ENTRY_SIGIOT + #endif diff --git a/linux-user/signal.c b/linux-user/signal.c index 8d29bfaa6b..61c6fa3fcf 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -53,40 +53,9 @@ abi_ulong default_rt_sigreturn; QEMU_BUILD_BUG_ON(__SIGRTMAX + 1 != _NSIG); #endif static uint8_t host_to_target_signal_table[_NSIG] = { - [SIGHUP] = TARGET_SIGHUP, - [SIGINT] = TARGET_SIGINT, - [SIGQUIT] = TARGET_SIGQUIT, - [SIGILL] = TARGET_SIGILL, - [SIGTRAP] = TARGET_SIGTRAP, - [SIGABRT] = TARGET_SIGABRT, -/* [SIGIOT] = TARGET_SIGIOT,*/ - [SIGBUS] = TARGET_SIGBUS, - [SIGFPE] = TARGET_SIGFPE, - [SIGKILL] = TARGET_SIGKILL, - [SIGUSR1] = TARGET_SIGUSR1, - [SIGSEGV] = TARGET_SIGSEGV, - [SIGUSR2] = TARGET_SIGUSR2, - [SIGPIPE] = TARGET_SIGPIPE, - [SIGALRM] = TARGET_SIGALRM, - [SIGTERM] = TARGET_SIGTERM, -#ifdef SIGSTKFLT - [SIGSTKFLT] = TARGET_SIGSTKFLT, -#endif - [SIGCHLD] = TARGET_SIGCHLD, - [SIGCONT] = TARGET_SIGCONT, - [SIGSTOP] = TARGET_SIGSTOP, - [SIGTSTP] = TARGET_SIGTSTP, - [SIGTTIN] = TARGET_SIGTTIN, - [SIGTTOU] = TARGET_SIGTTOU, - [SIGURG] = TARGET_SIGURG, - [SIGXCPU] = TARGET_SIGXCPU, - [SIGXFSZ] = TARGET_SIGXFSZ, - [SIGVTALRM] = TARGET_SIGVTALRM, - [SIGPROF] = TARGET_SIGPROF, - [SIGWINCH] = TARGET_SIGWINCH, - [SIGIO] = TARGET_SIGIO, - [SIGPWR] = TARGET_SIGPWR, - [SIGSYS] = TARGET_SIGSYS, +#define MAKE_SIG_ENTRY(sig) [sig] = TARGET_##sig, + MAKE_SIGNAL_LIST +#undef MAKE_SIG_ENTRY /* next signals stay the same */ }; diff --git a/linux-user/sparc/target_mman.h b/linux-user/sparc/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/sparc/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/strace.c b/linux-user/strace.c index 7d882526da..37bc96df9b 100644 --- a/linux-user/strace.c +++ b/linux-user/strace.c @@ -17,6 +17,8 @@ #include "qemu.h" #include "user-internals.h" #include "strace.h" +#include "signal-common.h" +#include "target_mman.h" struct syscallname { int nr; @@ -81,6 +83,7 @@ UNUSED static void print_buf(abi_long addr, abi_long len, int last); UNUSED static void print_raw_param(const char *, abi_long, int); UNUSED static void print_timeval(abi_ulong, int); UNUSED static void print_timespec(abi_ulong, int); +UNUSED static void print_timespec64(abi_ulong, int); UNUSED static void print_timezone(abi_ulong, int); UNUSED static void print_itimerval(abi_ulong, int); UNUSED static void print_number(abi_long, int); @@ -141,30 +144,21 @@ if( cmd == val ) { \ qemu_log("%d", cmd); } +static const char * const target_signal_name[] = { +#define MAKE_SIG_ENTRY(sig) [TARGET_##sig] = #sig, + MAKE_SIGNAL_LIST +#undef MAKE_SIG_ENTRY +}; + static void print_signal(abi_ulong arg, int last) { const char *signal_name = NULL; - switch(arg) { - case TARGET_SIGHUP: signal_name = "SIGHUP"; break; - case TARGET_SIGINT: signal_name = "SIGINT"; break; - case TARGET_SIGQUIT: signal_name = "SIGQUIT"; break; - case TARGET_SIGILL: signal_name = "SIGILL"; break; - case TARGET_SIGABRT: signal_name = "SIGABRT"; break; - case TARGET_SIGFPE: signal_name = "SIGFPE"; break; - case TARGET_SIGKILL: signal_name = "SIGKILL"; break; - case TARGET_SIGSEGV: signal_name = "SIGSEGV"; break; - case TARGET_SIGPIPE: signal_name = "SIGPIPE"; break; - case TARGET_SIGALRM: signal_name = "SIGALRM"; break; - case TARGET_SIGTERM: signal_name = "SIGTERM"; break; - case TARGET_SIGUSR1: signal_name = "SIGUSR1"; break; - case TARGET_SIGUSR2: signal_name = "SIGUSR2"; break; - case TARGET_SIGCHLD: signal_name = "SIGCHLD"; break; - case TARGET_SIGCONT: signal_name = "SIGCONT"; break; - case TARGET_SIGSTOP: signal_name = "SIGSTOP"; break; - case TARGET_SIGTTIN: signal_name = "SIGTTIN"; break; - case TARGET_SIGTTOU: signal_name = "SIGTTOU"; break; + + if (arg < ARRAY_SIZE(target_signal_name)) { + signal_name = target_signal_name[arg]; } + if (signal_name == NULL) { print_raw_param("%ld", arg, last); return; @@ -803,6 +797,24 @@ print_syscall_ret_clock_gettime(CPUArchState *cpu_env, const struct syscallname #define print_syscall_ret_clock_getres print_syscall_ret_clock_gettime #endif +#if defined(TARGET_NR_clock_gettime64) +static void +print_syscall_ret_clock_gettime64(CPUArchState *cpu_env, const struct syscallname *name, + abi_long ret, abi_long arg0, abi_long arg1, + abi_long arg2, abi_long arg3, abi_long arg4, + abi_long arg5) +{ + if (!print_syscall_err(ret)) { + qemu_log(TARGET_ABI_FMT_ld, ret); + qemu_log(" ("); + print_timespec64(arg1, 1); + qemu_log(")"); + } + + qemu_log("\n"); +} +#endif + #ifdef TARGET_NR_gettimeofday static void print_syscall_ret_gettimeofday(CPUArchState *cpu_env, const struct syscallname *name, @@ -1494,6 +1506,11 @@ print_file_mode(abi_long mode, int last) const char *sep = ""; const struct flags *m; + if (mode == 0) { + qemu_log("000%s", get_comma(last)); + return; + } + for (m = &mode_flags[0]; m->f_string != NULL; m++) { if ((m->f_value & mode) == m->f_value) { qemu_log("%s%s", m->f_string, sep); @@ -1661,6 +1678,27 @@ print_timespec(abi_ulong ts_addr, int last) } static void +print_timespec64(abi_ulong ts_addr, int last) +{ + if (ts_addr) { + struct target__kernel_timespec *ts; + + ts = lock_user(VERIFY_READ, ts_addr, sizeof(*ts), 1); + if (!ts) { + print_pointer(ts_addr, last); + return; + } + qemu_log("{tv_sec = %lld" + ",tv_nsec = %lld}%s", + (long long)tswap64(ts->tv_sec), (long long)tswap64(ts->tv_nsec), + get_comma(last)); + unlock_user(ts, ts_addr, 0); + } else { + qemu_log("NULL%s", get_comma(last)); + } +} + +static void print_timezone(abi_ulong tz_addr, int last) { if (tz_addr) { @@ -2275,6 +2313,19 @@ print_clock_gettime(CPUArchState *cpu_env, const struct syscallname *name, #define print_clock_getres print_clock_gettime #endif +#if defined(TARGET_NR_clock_gettime64) +static void +print_clock_gettime64(CPUArchState *cpu_env, const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + print_syscall_prologue(name); + print_enums(clockids, arg0, 0); + print_pointer(arg1, 1); + print_syscall_epilogue(name); +} +#endif + #ifdef TARGET_NR_clock_settime static void print_clock_settime(CPUArchState *cpu_env, const struct syscallname *name, @@ -2969,6 +3020,46 @@ print_stat(CPUArchState *cpu_env, const struct syscallname *name, #define print_lstat64 print_stat #endif +#if defined(TARGET_NR_madvise) +static struct enums madvise_advice[] = { + ENUM_TARGET(MADV_NORMAL), + ENUM_TARGET(MADV_RANDOM), + ENUM_TARGET(MADV_SEQUENTIAL), + ENUM_TARGET(MADV_WILLNEED), + ENUM_TARGET(MADV_DONTNEED), + ENUM_TARGET(MADV_FREE), + ENUM_TARGET(MADV_REMOVE), + ENUM_TARGET(MADV_DONTFORK), + ENUM_TARGET(MADV_DOFORK), + ENUM_TARGET(MADV_MERGEABLE), + ENUM_TARGET(MADV_UNMERGEABLE), + ENUM_TARGET(MADV_HUGEPAGE), + ENUM_TARGET(MADV_NOHUGEPAGE), + ENUM_TARGET(MADV_DONTDUMP), + ENUM_TARGET(MADV_DODUMP), + ENUM_TARGET(MADV_WIPEONFORK), + ENUM_TARGET(MADV_KEEPONFORK), + ENUM_TARGET(MADV_COLD), + ENUM_TARGET(MADV_PAGEOUT), + ENUM_TARGET(MADV_POPULATE_READ), + ENUM_TARGET(MADV_POPULATE_WRITE), + ENUM_TARGET(MADV_DONTNEED_LOCKED), + ENUM_END, +}; + +static void +print_madvise(CPUArchState *cpu_env, const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + print_syscall_prologue(name); + print_pointer(arg0, 0); + print_raw_param("%d", arg1, 0); + print_enums(madvise_advice, arg2, 1); + print_syscall_epilogue(name); +} +#endif + #if defined(TARGET_NR_fstat) || defined(TARGET_NR_fstat64) static void print_fstat(CPUArchState *cpu_env, const struct syscallname *name, @@ -3272,6 +3363,34 @@ print_openat(CPUArchState *cpu_env, const struct syscallname *name, } #endif +#ifdef TARGET_NR_pidfd_send_signal +static void +print_pidfd_send_signal(CPUArchState *cpu_env, const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + void *p; + target_siginfo_t uinfo; + + print_syscall_prologue(name); + print_raw_param("%d", arg0, 0); + print_signal(arg1, 0); + + p = lock_user(VERIFY_READ, arg2, sizeof(target_siginfo_t), 1); + if (p) { + get_target_siginfo(&uinfo, p); + print_siginfo(&uinfo); + + unlock_user(p, arg2, 0); + } else { + print_pointer(arg2, 1); + } + + print_raw_param("%u", arg3, 0); + print_syscall_epilogue(name); +} +#endif + #ifdef TARGET_NR_mq_unlink static void print_mq_unlink(CPUArchState *cpu_env, const struct syscallname *name, @@ -3489,6 +3608,21 @@ print_unshare(CPUArchState *cpu_env, const struct syscallname *name, } #endif +#ifdef TARGET_NR_clock_nanosleep +static void +print_clock_nanosleep(CPUArchState *cpu_env, const struct syscallname *name, + abi_long arg0, abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + print_syscall_prologue(name); + print_enums(clockids, arg0, 0); + print_raw_param("%d", arg1, 0); + print_timespec(arg2, 0); + print_timespec(arg3, 1); + print_syscall_epilogue(name); +} +#endif + #ifdef TARGET_NR_utime static void print_utime(CPUArchState *cpu_env, const struct syscallname *name, @@ -3576,44 +3710,37 @@ print_munmap(CPUArchState *cpu_env, const struct syscallname *name, #endif #ifdef TARGET_NR_futex -static void print_futex_op(abi_long tflag, int last) -{ -#define print_op(val) \ -if( cmd == val ) { \ - qemu_log(#val); \ - return; \ -} - - int cmd = (int)tflag; -#ifdef FUTEX_PRIVATE_FLAG - if (cmd & FUTEX_PRIVATE_FLAG) { - qemu_log("FUTEX_PRIVATE_FLAG|"); - cmd &= ~FUTEX_PRIVATE_FLAG; - } -#endif -#ifdef FUTEX_CLOCK_REALTIME - if (cmd & FUTEX_CLOCK_REALTIME) { - qemu_log("FUTEX_CLOCK_REALTIME|"); - cmd &= ~FUTEX_CLOCK_REALTIME; +static void print_futex_op(int cmd, int last) +{ + static const char * const futex_names[] = { +#define NAME(X) [X] = #X + NAME(FUTEX_WAIT), + NAME(FUTEX_WAKE), + NAME(FUTEX_FD), + NAME(FUTEX_REQUEUE), + NAME(FUTEX_CMP_REQUEUE), + NAME(FUTEX_WAKE_OP), + NAME(FUTEX_LOCK_PI), + NAME(FUTEX_UNLOCK_PI), + NAME(FUTEX_TRYLOCK_PI), + NAME(FUTEX_WAIT_BITSET), + NAME(FUTEX_WAKE_BITSET), + NAME(FUTEX_WAIT_REQUEUE_PI), + NAME(FUTEX_CMP_REQUEUE_PI), + NAME(FUTEX_LOCK_PI2), +#undef NAME + }; + + unsigned base_cmd = cmd & FUTEX_CMD_MASK; + + if (base_cmd < ARRAY_SIZE(futex_names)) { + qemu_log("%s%s%s", + (cmd & FUTEX_PRIVATE_FLAG ? "FUTEX_PRIVATE_FLAG|" : ""), + (cmd & FUTEX_CLOCK_REALTIME ? "FUTEX_CLOCK_REALTIME|" : ""), + futex_names[base_cmd]); + } else { + qemu_log("0x%x", cmd); } -#endif - print_op(FUTEX_WAIT) - print_op(FUTEX_WAKE) - print_op(FUTEX_FD) - print_op(FUTEX_REQUEUE) - print_op(FUTEX_CMP_REQUEUE) - print_op(FUTEX_WAKE_OP) - print_op(FUTEX_LOCK_PI) - print_op(FUTEX_UNLOCK_PI) - print_op(FUTEX_TRYLOCK_PI) -#ifdef FUTEX_WAIT_BITSET - print_op(FUTEX_WAIT_BITSET) -#endif -#ifdef FUTEX_WAKE_BITSET - print_op(FUTEX_WAKE_BITSET) -#endif - /* unknown values */ - qemu_log("%d", cmd); } static void @@ -3621,11 +3748,23 @@ print_futex(CPUArchState *cpu_env, const struct syscallname *name, abi_long arg0, abi_long arg1, abi_long arg2, abi_long arg3, abi_long arg4, abi_long arg5) { + abi_long op = arg1 & FUTEX_CMD_MASK; print_syscall_prologue(name); print_pointer(arg0, 0); print_futex_op(arg1, 0); print_raw_param(",%d", arg2, 0); - print_pointer(arg3, 0); /* struct timespec */ + switch (op) { + case FUTEX_WAIT: + case FUTEX_WAIT_BITSET: + case FUTEX_LOCK_PI: + case FUTEX_LOCK_PI2: + case FUTEX_WAIT_REQUEUE_PI: + print_timespec(arg3, 0); + break; + default: + print_pointer(arg3, 0); + break; + } print_pointer(arg4, 0); print_raw_param("%d", arg4, 1); print_syscall_epilogue(name); @@ -3780,26 +3919,37 @@ print_syscall(CPUArchState *cpu_env, int num, abi_long arg4, abi_long arg5, abi_long arg6) { int i; - const char *format="%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ")"; + FILE *f; + const char *format = "%s(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," + TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "," + TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ")"; - qemu_log("%d ", getpid()); + f = qemu_log_trylock(); + if (!f) { + return; + } + fprintf(f, "%d ", getpid()); - for(i=0;i<nsyscalls;i++) - if( scnames[i].nr == num ) { - if( scnames[i].call != NULL ) { - scnames[i].call( - cpu_env, &scnames[i], arg1, arg2, arg3, arg4, arg5, arg6); + for (i = 0; i < nsyscalls; i++) { + if (scnames[i].nr == num) { + if (scnames[i].call != NULL) { + scnames[i].call(cpu_env, &scnames[i], arg1, arg2, arg3, + arg4, arg5, arg6); } else { /* XXX: this format system is broken because it uses host types and host pointers for strings */ - if( scnames[i].format != NULL ) + if (scnames[i].format != NULL) { format = scnames[i].format; - qemu_log(format, - scnames[i].name, arg1, arg2, arg3, arg4, arg5, arg6); + } + fprintf(f, format, scnames[i].name, arg1, arg2, + arg3, arg4, arg5, arg6); } + qemu_log_unlock(f); return; } - qemu_log("Unknown syscall %d\n", num); + } + fprintf(f, "Unknown syscall %d\n", num); + qemu_log_unlock(f); } @@ -3809,21 +3959,29 @@ print_syscall_ret(CPUArchState *cpu_env, int num, abi_long ret, abi_long arg4, abi_long arg5, abi_long arg6) { int i; + FILE *f; - for(i=0;i<nsyscalls;i++) - if( scnames[i].nr == num ) { - if( scnames[i].result != NULL ) { + f = qemu_log_trylock(); + if (!f) { + return; + } + + for (i = 0; i < nsyscalls; i++) { + if (scnames[i].nr == num) { + if (scnames[i].result != NULL) { scnames[i].result(cpu_env, &scnames[i], ret, arg1, arg2, arg3, arg4, arg5, arg6); } else { if (!print_syscall_err(ret)) { - qemu_log(TARGET_ABI_FMT_ld, ret); + fprintf(f, TARGET_ABI_FMT_ld, ret); } - qemu_log("\n"); + fprintf(f, "\n"); } break; } + } + qemu_log_unlock(f); } void print_taken_signal(int target_signum, const target_siginfo_t *tinfo) @@ -3831,9 +3989,17 @@ void print_taken_signal(int target_signum, const target_siginfo_t *tinfo) /* Print the strace output for a signal being taken: * --- SIGSEGV {si_signo=SIGSEGV, si_code=SI_KERNEL, si_addr=0} --- */ - qemu_log("--- "); + FILE *f; + + f = qemu_log_trylock(); + if (!f) { + return; + } + + fprintf(f, "--- "); print_signal(target_signum, 1); - qemu_log(" "); + fprintf(f, " "); print_siginfo(tinfo); - qemu_log(" ---\n"); + fprintf(f, " ---\n"); + qemu_log_unlock(f); } diff --git a/linux-user/strace.list b/linux-user/strace.list index 72e17b1acf..a87415bf3d 100644 --- a/linux-user/strace.list +++ b/linux-user/strace.list @@ -91,7 +91,8 @@ print_syscall_ret_clock_gettime }, #endif #ifdef TARGET_NR_clock_nanosleep -{ TARGET_NR_clock_nanosleep, "clock_nanosleep" , NULL, NULL, NULL }, +{ TARGET_NR_clock_nanosleep, "clock_nanosleep" , NULL, print_clock_nanosleep, + NULL }, #endif #ifdef TARGET_NR_clock_settime { TARGET_NR_clock_settime, "clock_settime" , NULL, print_clock_settime, NULL }, @@ -278,10 +279,10 @@ { TARGET_NR_getcwd, "getcwd" , "%s(%p,%d)", NULL, NULL }, #endif #ifdef TARGET_NR_getdents -{ TARGET_NR_getdents, "getdents" , NULL, NULL, NULL }, +{ TARGET_NR_getdents, "getdents" , "%s(%d,%p,%u)", NULL, NULL }, #endif #ifdef TARGET_NR_getdents64 -{ TARGET_NR_getdents64, "getdents64" , NULL, NULL, NULL }, +{ TARGET_NR_getdents64, "getdents64" , "%s(%d,%p,%u)", NULL, NULL }, #endif #ifdef TARGET_NR_getdomainname { TARGET_NR_getdomainname, "getdomainname" , NULL, NULL, NULL }, @@ -351,7 +352,7 @@ { TARGET_NR_getpriority, "getpriority", "%s(%#x,%#x)", NULL, NULL }, #endif #ifdef TARGET_NR_getrandom -{ TARGET_NR_getrandom, "getrandom", NULL, NULL, NULL }, +{ TARGET_NR_getrandom, "getrandom", "%s(%p,%u,%u)", NULL, NULL }, #endif #ifdef TARGET_NR_getresgid { TARGET_NR_getresgid, "getresgid" , NULL, NULL, NULL }, @@ -541,7 +542,7 @@ { TARGET_NR_lstat64, "lstat64" , NULL, print_lstat64, NULL }, #endif #ifdef TARGET_NR_madvise -{ TARGET_NR_madvise, "madvise" , NULL, NULL, NULL }, +{ TARGET_NR_madvise, "madvise" , NULL, print_madvise, NULL }, #endif #ifdef TARGET_NR_madvise1 { TARGET_NR_madvise1, "madvise1" , NULL, NULL, NULL }, @@ -1664,6 +1665,15 @@ #ifdef TARGET_NR_pipe2 { TARGET_NR_pipe2, "pipe2", NULL, NULL, NULL }, #endif +#ifdef TARGET_NR_pidfd_open +{ TARGET_NR_pidfd_open, "pidfd_open", "%s(%d,%u)", NULL, NULL }, +#endif +#ifdef TARGET_NR_pidfd_send_signal +{ TARGET_NR_pidfd_send_signal, "pidfd_send_signal", NULL, print_pidfd_send_signal, NULL }, +#endif +#ifdef TARGET_NR_pidfd_getfd +{ TARGET_NR_pidfd_getfd, "pidfd_getfd", "%s(%d,%d,%u)", NULL, NULL }, +#endif #ifdef TARGET_NR_atomic_cmpxchg_32 { TARGET_NR_atomic_cmpxchg_32, "atomic_cmpxchg_32", NULL, NULL, NULL }, #endif @@ -1676,3 +1686,7 @@ #ifdef TARGET_NR_copy_file_range { TARGET_NR_copy_file_range, "copy_file_range", "%s(%d,%p,%d,%p,"TARGET_ABI_FMT_lu",%u)", NULL, NULL }, #endif +#ifdef TARGET_NR_clock_gettime64 +{ TARGET_NR_clock_gettime64, "clock_gettime64" , NULL, print_clock_gettime64, + print_syscall_ret_clock_gettime64 }, +#endif diff --git a/linux-user/syscall.c b/linux-user/syscall.c index f409121202..2e954d8dbd 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -346,6 +346,16 @@ _syscall6(int,sys_futex,int *,uaddr,int,op,int,val, _syscall6(int,sys_futex_time64,int *,uaddr,int,op,int,val, const struct timespec *,timeout,int *,uaddr2,int,val3) #endif +#if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open) +_syscall2(int, pidfd_open, pid_t, pid, unsigned int, flags); +#endif +#if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal) +_syscall4(int, pidfd_send_signal, int, pidfd, int, sig, siginfo_t *, info, + unsigned int, flags); +#endif +#if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd) +_syscall3(int, pidfd_getfd, int, pidfd, int, targetfd, unsigned int, flags); +#endif #define __NR_sys_sched_getaffinity __NR_sched_getaffinity _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len, unsigned long *, user_mask_ptr); @@ -515,20 +525,25 @@ _syscall4(int, sys_prlimit64, pid_t, pid, int, resource, #if defined(TARGET_NR_timer_create) /* Maximum of 32 active POSIX timers allowed at any one time. */ -static timer_t g_posix_timers[32] = { 0, } ; +#define GUEST_TIMER_MAX 32 +static timer_t g_posix_timers[GUEST_TIMER_MAX]; +static int g_posix_timer_allocated[GUEST_TIMER_MAX]; static inline int next_free_host_timer(void) { - int k ; - /* FIXME: Does finding the next free slot require a lock? */ - for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) { - if (g_posix_timers[k] == 0) { - g_posix_timers[k] = (timer_t) 1; + int k; + for (k = 0; k < ARRAY_SIZE(g_posix_timer_allocated); k++) { + if (qatomic_xchg(g_posix_timer_allocated + k, 1) == 0) { return k; } } return -1; } + +static inline void free_host_timer_slot(int id) +{ + qatomic_store_release(g_posix_timer_allocated + id, 0); +} #endif static inline int host_to_target_errno(int host_errno) @@ -7753,15 +7768,16 @@ static int do_safe_futex(int *uaddr, int op, int val, futexes locally would make futexes shared between multiple processes tricky. However they're probably useless because guest atomic operations won't work either. */ -#if defined(TARGET_NR_futex) -static int do_futex(CPUState *cpu, target_ulong uaddr, int op, int val, - target_ulong timeout, target_ulong uaddr2, int val3) +#if defined(TARGET_NR_futex) || defined(TARGET_NR_futex_time64) +static int do_futex(CPUState *cpu, bool time64, target_ulong uaddr, + int op, int val, target_ulong timeout, + target_ulong uaddr2, int val3) { - struct timespec ts, *pts; + struct timespec ts, *pts = NULL; + void *haddr2 = NULL; int base_op; - /* ??? We assume FUTEX_* constants are the same on both host - and target. */ + /* We assume FUTEX_* constants are the same on both host and target. */ #ifdef FUTEX_CMD_MASK base_op = op & FUTEX_CMD_MASK; #else @@ -7770,85 +7786,53 @@ static int do_futex(CPUState *cpu, target_ulong uaddr, int op, int val, switch (base_op) { case FUTEX_WAIT: case FUTEX_WAIT_BITSET: - if (timeout) { - pts = &ts; - target_to_host_timespec(pts, timeout); - } else { - pts = NULL; - } - return do_safe_futex(g2h(cpu, uaddr), - op, tswap32(val), pts, NULL, val3); + val = tswap32(val); + break; + case FUTEX_WAIT_REQUEUE_PI: + val = tswap32(val); + haddr2 = g2h(cpu, uaddr2); + break; + case FUTEX_LOCK_PI: + case FUTEX_LOCK_PI2: + break; case FUTEX_WAKE: - return do_safe_futex(g2h(cpu, uaddr), - op, val, NULL, NULL, 0); + case FUTEX_WAKE_BITSET: + case FUTEX_TRYLOCK_PI: + case FUTEX_UNLOCK_PI: + timeout = 0; + break; case FUTEX_FD: - return do_safe_futex(g2h(cpu, uaddr), - op, val, NULL, NULL, 0); - case FUTEX_REQUEUE: + val = target_to_host_signal(val); + timeout = 0; + break; case FUTEX_CMP_REQUEUE: + case FUTEX_CMP_REQUEUE_PI: + val3 = tswap32(val3); + /* fall through */ + case FUTEX_REQUEUE: case FUTEX_WAKE_OP: - /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the - TIMEOUT parameter is interpreted as a uint32_t by the kernel. - But the prototype takes a `struct timespec *'; insert casts - to satisfy the compiler. We do not need to tswap TIMEOUT - since it's not compared to guest memory. */ - pts = (struct timespec *)(uintptr_t) timeout; - return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2), - (base_op == FUTEX_CMP_REQUEUE - ? tswap32(val3) : val3)); + /* + * For these, the 4th argument is not TIMEOUT, but VAL2. + * But the prototype of do_safe_futex takes a pointer, so + * insert casts to satisfy the compiler. We do not need + * to tswap VAL2 since it's not compared to guest memory. + */ + pts = (struct timespec *)(uintptr_t)timeout; + timeout = 0; + haddr2 = g2h(cpu, uaddr2); + break; default: return -TARGET_ENOSYS; } -} -#endif - -#if defined(TARGET_NR_futex_time64) -static int do_futex_time64(CPUState *cpu, target_ulong uaddr, int op, - int val, target_ulong timeout, - target_ulong uaddr2, int val3) -{ - struct timespec ts, *pts; - int base_op; - - /* ??? We assume FUTEX_* constants are the same on both host - and target. */ -#ifdef FUTEX_CMD_MASK - base_op = op & FUTEX_CMD_MASK; -#else - base_op = op; -#endif - switch (base_op) { - case FUTEX_WAIT: - case FUTEX_WAIT_BITSET: - if (timeout) { - pts = &ts; - if (target_to_host_timespec64(pts, timeout)) { - return -TARGET_EFAULT; - } - } else { - pts = NULL; + if (timeout) { + pts = &ts; + if (time64 + ? target_to_host_timespec64(pts, timeout) + : target_to_host_timespec(pts, timeout)) { + return -TARGET_EFAULT; } - return do_safe_futex(g2h(cpu, uaddr), op, - tswap32(val), pts, NULL, val3); - case FUTEX_WAKE: - return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0); - case FUTEX_FD: - return do_safe_futex(g2h(cpu, uaddr), op, val, NULL, NULL, 0); - case FUTEX_REQUEUE: - case FUTEX_CMP_REQUEUE: - case FUTEX_WAKE_OP: - /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the - TIMEOUT parameter is interpreted as a uint32_t by the kernel. - But the prototype takes a `struct timespec *'; insert casts - to satisfy the compiler. We do not need to tswap TIMEOUT - since it's not compared to guest memory. */ - pts = (struct timespec *)(uintptr_t) timeout; - return do_safe_futex(g2h(cpu, uaddr), op, val, pts, g2h(cpu, uaddr2), - (base_op == FUTEX_CMP_REQUEUE - ? tswap32(val3) : val3)); - default: - return -TARGET_ENOSYS; } + return do_safe_futex(g2h(cpu, uaddr), op, val, pts, haddr2, val3); } #endif @@ -8026,7 +8010,11 @@ static int open_self_maps(CPUArchState *cpu_env, int fd) continue; } +#ifdef TARGET_HPPA + if (h2g(max) == ts->info->stack_limit) { +#else if (h2g(min) == ts->info->stack_limit) { +#endif path = "[stack]"; } else { path = e->path; @@ -8684,6 +8672,30 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, fd_trans_unregister(ret); return ret; #endif +#if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open) + case TARGET_NR_pidfd_open: + return get_errno(pidfd_open(arg1, arg2)); +#endif +#if defined(__NR_pidfd_send_signal) && defined(TARGET_NR_pidfd_send_signal) + case TARGET_NR_pidfd_send_signal: + { + siginfo_t uinfo; + + p = lock_user(VERIFY_READ, arg3, sizeof(target_siginfo_t), 1); + if (!p) { + return -TARGET_EFAULT; + } + target_to_host_siginfo(&uinfo, p); + unlock_user(p, arg3, 0); + ret = get_errno(pidfd_send_signal(arg1, target_to_host_signal(arg2), + &uinfo, arg4)); + } + return ret; +#endif +#if defined(__NR_pidfd_getfd) && defined(TARGET_NR_pidfd_getfd) + case TARGET_NR_pidfd_getfd: + return get_errno(pidfd_getfd(arg1, arg2, arg3)); +#endif case TARGET_NR_close: fd_trans_unregister(arg1); return get_errno(close(arg1)); @@ -9690,7 +9702,7 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, } target_to_host_siginfo(&uinfo, p); unlock_user(p, arg3, 0); - ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo)); + ret = get_errno(sys_rt_sigqueueinfo(arg1, target_to_host_signal(arg2), &uinfo)); } return ret; case TARGET_NR_rt_tgsigqueueinfo: @@ -9703,7 +9715,7 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, } target_to_host_siginfo(&uinfo, p); unlock_user(p, arg4, 0); - ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, arg3, &uinfo)); + ret = get_errno(sys_rt_tgsigqueueinfo(arg1, arg2, target_to_host_signal(arg3), &uinfo)); } return ret; #ifdef TARGET_NR_sigreturn @@ -9912,11 +9924,22 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); if (!p || !p2) { ret = -TARGET_EFAULT; + } else if (!arg4) { + /* Short circuit this for the magic exe check. */ + ret = -TARGET_EINVAL; } else if (is_proc_myself((const char *)p, "exe")) { char real[PATH_MAX], *temp; temp = realpath(exec_path, real); - ret = temp == NULL ? get_errno(-1) : strlen(real) ; - snprintf((char *)p2, arg4, "%s", real); + /* Return value is # of bytes that we wrote to the buffer. */ + if (temp == NULL) { + ret = get_errno(-1); + } else { + /* Don't worry about sign mismatch as earlier mapping + * logic would have thrown a bad address error. */ + ret = MIN(strlen(real), arg4); + /* We cannot NUL terminate the string. */ + memcpy(p2, real, ret); + } } else { ret = get_errno(readlinkat(arg1, path(p), p2, arg4)); } @@ -12318,11 +12341,11 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_futex case TARGET_NR_futex: - return do_futex(cpu, arg1, arg2, arg3, arg4, arg5, arg6); + return do_futex(cpu, false, arg1, arg2, arg3, arg4, arg5, arg6); #endif #ifdef TARGET_NR_futex_time64 case TARGET_NR_futex_time64: - return do_futex_time64(cpu, arg1, arg2, arg3, arg4, arg5, arg6); + return do_futex(cpu, true, arg1, arg2, arg3, arg4, arg5, arg6); #endif #ifdef CONFIG_INOTIFY #if defined(TARGET_NR_inotify_init) @@ -12847,15 +12870,18 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, phost_sevp = &host_sevp; ret = target_to_host_sigevent(phost_sevp, arg2); if (ret != 0) { + free_host_timer_slot(timer_index); return ret; } } ret = get_errno(timer_create(clkid, phost_sevp, phtimer)); if (ret) { - phtimer = NULL; + free_host_timer_slot(timer_index); } else { if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) { + timer_delete(*phtimer); + free_host_timer_slot(timer_index); return -TARGET_EFAULT; } } @@ -12991,7 +13017,7 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, } else { timer_t htimer = g_posix_timers[timerid]; ret = get_errno(timer_delete(htimer)); - g_posix_timers[timerid] = 0; + free_host_timer_slot(timerid); } return ret; } diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 85b0f33e91..01ee10a88f 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -1246,7 +1246,7 @@ struct target_winsize { #include "termbits.h" -#if defined(TARGET_MIPS) +#if defined(TARGET_MIPS) || defined(TARGET_XTENSA) #define TARGET_PROT_SEM 0x10 #else #define TARGET_PROT_SEM 0x08 @@ -2699,6 +2699,9 @@ struct target_drm_i915_getparam { #define FUTEX_TRYLOCK_PI 8 #define FUTEX_WAIT_BITSET 9 #define FUTEX_WAKE_BITSET 10 +#define FUTEX_WAIT_REQUEUE_PI 11 +#define FUTEX_CMP_REQUEUE_PI 12 +#define FUTEX_LOCK_PI2 13 #define FUTEX_PRIVATE_FLAG 128 #define FUTEX_CLOCK_REALTIME 256 diff --git a/linux-user/x86_64/target_elf.h b/linux-user/x86_64/target_elf.h index 7b76a90de8..3f628f8d66 100644 --- a/linux-user/x86_64/target_elf.h +++ b/linux-user/x86_64/target_elf.h @@ -9,6 +9,6 @@ #define X86_64_TARGET_ELF_H static inline const char *cpu_get_model(uint32_t eflags) { - return "qemu64"; + return "max"; } #endif diff --git a/linux-user/x86_64/target_mman.h b/linux-user/x86_64/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/x86_64/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/linux-user/xtensa/target_mman.h b/linux-user/xtensa/target_mman.h new file mode 100644 index 0000000000..e7ba6070fe --- /dev/null +++ b/linux-user/xtensa/target_mman.h @@ -0,0 +1 @@ +#include "../generic/target_mman.h" diff --git a/target/hppa/helper.c b/target/hppa/helper.c index e2758d8df3..74b8747083 100644 --- a/target/hppa/helper.c +++ b/target/hppa/helper.c @@ -85,9 +85,11 @@ void hppa_cpu_dump_state(CPUState *cs, FILE *f, int flags) char psw_c[20]; int i; - qemu_fprintf(f, "IA_F " TARGET_FMT_lx " IA_B " TARGET_FMT_lx "\n", + qemu_fprintf(f, "IA_F " TARGET_FMT_lx " IA_B " TARGET_FMT_lx + " IIR " TREG_FMT_lx "\n", hppa_form_gva_psw(psw, env->iasq_f, env->iaoq_f), - hppa_form_gva_psw(psw, env->iasq_b, env->iaoq_b)); + hppa_form_gva_psw(psw, env->iasq_b, env->iaoq_b), + env->cr[CR_IIR]); psw_c[0] = (psw & PSW_W ? 'W' : '-'); psw_c[1] = (psw & PSW_E ? 'E' : '-'); diff --git a/tests/tcg/multiarch/linux/linux-madvise.c b/tests/tcg/multiarch/linux/linux-madvise.c new file mode 100644 index 0000000000..29d0997e68 --- /dev/null +++ b/tests/tcg/multiarch/linux/linux-madvise.c @@ -0,0 +1,70 @@ +#include <assert.h> +#include <stdlib.h> +#include <sys/mman.h> +#include <unistd.h> + +static void test_anonymous(void) +{ + int pagesize = getpagesize(); + char *page; + int ret; + + page = mmap(NULL, pagesize, PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); + assert(page != MAP_FAILED); + + /* Check that mprotect() does not interfere with MADV_DONTNEED. */ + ret = mprotect(page, pagesize, PROT_READ | PROT_WRITE); + assert(ret == 0); + + /* Check that MADV_DONTNEED clears the page. */ + *page = 42; + ret = madvise(page, pagesize, MADV_DONTNEED); + assert(ret == 0); + assert(*page == 0); + + ret = munmap(page, pagesize); + assert(ret == 0); +} + +static void test_file(void) +{ + char tempname[] = "/tmp/.cmadviseXXXXXX"; + int pagesize = getpagesize(); + ssize_t written; + char c = 42; + char *page; + int ret; + int fd; + + fd = mkstemp(tempname); + assert(fd != -1); + ret = unlink(tempname); + assert(ret == 0); + written = write(fd, &c, sizeof(c)); + assert(written == sizeof(c)); + page = mmap(NULL, pagesize, PROT_READ, MAP_PRIVATE, fd, 0); + assert(page != MAP_FAILED); + + /* Check that mprotect() does not interfere with MADV_DONTNEED. */ + ret = mprotect(page, pagesize, PROT_READ | PROT_WRITE); + assert(ret == 0); + + /* Check that MADV_DONTNEED resets the page. */ + *page = 0; + ret = madvise(page, pagesize, MADV_DONTNEED); + assert(ret == 0); + assert(*page == c); + + ret = munmap(page, pagesize); + assert(ret == 0); + ret = close(fd); + assert(ret == 0); +} + +int main(void) +{ + test_anonymous(); + test_file(); + + return EXIT_SUCCESS; +} |