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/* Tests that the process can exit even if daemon thread is still running.
This test does *not* use any libc; it interfaces only with kernel. */
#include <sys/lwp.h>
#include <sys/mman.h>
#include <sys/regset.h>
#include <sys/syscall.h>
#include <ucontext.h>
#if defined(__amd64) || defined(__i386)
#include <sys/segments.h>
#endif
extern void bzero(void *ptr, size_t n);
#if defined(VGP_x86_solaris)
asm("\n"
".text\n"
".globl bzero\n"
"bzero:\n"
" push %edi\n"
" movl $0, %eax\n"
" movl 12(%esp), %ecx\n"
" movl 8(%esp), %edi\n"
" rep stosb\n"
" pop %edi\n"
" ret\n"
);
#elif defined(VGP_amd64_solaris)
asm("\n"
".text\n"
".globl bzero\n"
"bzero:\n"
" push %rdi\n"
" movq %rsi, %rcx\n"
" movq $0, %rax\n"
" rep stosb\n"
" pop %rdi\n"
" ret\n"
);
#else
# error "Unknown platform"
#endif
static void sleep(unsigned int sec) {
timespec_t ts;
ts.tv_sec = (time_t)sec;
ts.tv_nsec = 0;
#if defined(VGP_x86_solaris)
__asm__ __volatile__ (
"pushl $0\n"
"pushl %[TS]\n"
"pushl $0xdeadbeef\n"
"movl %[SYSNO], %%eax\n"
"int $0x91\n"
"addl $12, %%esp\n"
:
: [TS] "g" (&ts), [SYSNO] "n" (SYS_nanosleep)
: "eax", "edx", "cc", "memory");
#elif defined(VGP_amd64_solaris)
__asm__ __volatile__ (
"movq %[SYSNO], %%rax\n"
"movq %[TS], %%rdi\n"
"movq $0, %%rsi\n"
"syscall\n"
:
: [TS] "g" (&ts), [SYSNO] "n" (SYS_nanosleep)
: "rax", "rdx", "rdi", "rsi", "cc", "memory");
#else
# error "Unknown platform"
#endif
}
static void lwp_exit(void) {
#if defined(VGP_x86_solaris)
__asm__ __volatile__ (
"movl %[SYSNO], %%eax\n"
"int $0x91\n"
:
: [SYSNO] "n" (SYS_lwp_exit)
: "eax", "edx", "cc", "memory");
#elif defined(VGP_amd64_solaris)
__asm__ __volatile__ (
"movq %[SYSNO], %%rax\n"
"syscall\n"
:
: [SYSNO] "n" (SYS_lwp_exit)
: "rax", "rdx", "cc", "memory");
#else
# error "Unknown platform"
#endif
}
#define STACK_FLAGS (MAP_PRIVATE | MAP_NORESERVE | MAP_ANON)
#define STACK_PROT (PROT_READ | PROT_WRITE)
static void *allocate_stack(size_t stacksize) {
void *address = NULL;
#if defined(VGP_x86_solaris)
__asm__ __volatile__ (
"pushl $0\n"
"pushl $-1\n"
"pushl %[FLAGS]\n"
"pushl %[PROT]\n"
"pushl %[SIZE]\n"
"pushl $0\n"
"pushl $0xdeadbeef\n"
"movl %[SYSNO], %%eax\n"
"int $0x91\n"
"addl $28, %%esp\n"
"movl %%eax, %[ADDRESS]\n"
: [ADDRESS] "=r" (address)
: [FLAGS] "n" (STACK_FLAGS), [PROT] "n" (STACK_PROT),
[SIZE] "g" (stacksize), [SYSNO] "n" (SYS_mmap)
: "eax", "edx", "cc", "memory");
#elif defined(VGP_amd64_solaris)
__asm__ __volatile__ (
"movq %[SYSNO], %%rax\n"
"movq $0, %%rdi\n"
"movq %[SIZE], %%rsi\n"
"movq %[PROT], %%rdx\n"
"movq %[FLAGS], %%r10\n"
"movq $-1, %%r8\n"
"movq $0, %%r9\n"
"syscall\n"
"movq %%rax, %[ADDRESS]\n"
: [ADDRESS] "=r" (address)
: [FLAGS] "n" (STACK_FLAGS), [PROT] "n" (STACK_PROT),
[SIZE] "g" (stacksize), [SYSNO] "n" (SYS_mmap)
: "rax", "rdx", "rdi", "rsi", "r10", "r8", "r9", "cc", "memory");
#else
# error "Unknown platform"
#endif
return address;
}
#undef STACK_FLAGS
#undef STACK_PROT
static void thread_func(void) {
sleep(10000);
}
#define LWP_FLAGS (LWP_SUSPENDED | LWP_DETACHED | LWP_DAEMON)
static id_t lwp_create(void *stack) {
id_t tid;
ucontext_t ucontext;
bzero(&ucontext, sizeof(ucontext));
ucontext.uc_flags = UC_CPU;
#if defined(VGP_x86_solaris)
__asm__ __volatile__ (
"mov %%ss, %[STACK_SEG]\n"
: [STACK_SEG] "=r" (ucontext.uc_mcontext.gregs[SS])
:
:);
ucontext.uc_mcontext.gregs[EIP] = (greg_t) thread_func;
ucontext.uc_mcontext.gregs[UESP] = (greg_t) stack;
ucontext.uc_mcontext.gregs[EBP] = (greg_t) stack;
#elif defined(VGP_amd64_solaris)
ucontext.uc_mcontext.gregs[REG_SS] = UDS_SEL;
ucontext.uc_mcontext.gregs[REG_RIP] = (greg_t) thread_func;
ucontext.uc_mcontext.gregs[REG_RSP] = (greg_t) stack;
ucontext.uc_mcontext.gregs[REG_RBP] = (greg_t) stack;
#else
# error "Unknown platform"
#endif
#if defined(VGP_x86_solaris)
__asm__ __volatile__ (
"pushl $0\n"
"pushl %[FLAGS]\n"
"pushl %[UCONTEXT]\n"
"pushl $0xdeadbeef\n"
"movl %[SYSNO], %%eax\n"
"int $0x91\n"
"addl $16, %%esp\n"
"movl %%eax, %[TID]\n"
: [TID] "=r" (tid)
: [FLAGS] "n" (LWP_FLAGS), [UCONTEXT] "g" (&ucontext),
[SYSNO] "n" (SYS_lwp_create)
: "eax", "edx", "cc", "memory");
#elif defined(VGP_amd64_solaris)
__asm__ __volatile__ (
"movq %[SYSNO], %%rax\n"
"movq %[UCONTEXT], %%rdi\n"
"movq %[FLAGS], %%rsi\n"
"movq $0, %%rdx\n"
"syscall\n"
"movl %%eax, %[TID]\n"
: [TID] "=r" (tid)
: [FLAGS] "n" (LWP_FLAGS), [UCONTEXT] "g" (&ucontext),
[SYSNO] "n" (SYS_lwp_create)
: "rax", "rdx", "rdi", "rsi", "cc", "memory");
#else
# error "Unknown platform"
#endif
return tid;
}
static void lwp_continue(id_t tid) {
#if defined(VGP_x86_solaris)
__asm__ __volatile__ (
"pushl %[TID]\n"
"pushl $0xdeadbeef\n"
"movl %[SYSNO], %%eax\n"
"int $0x91\n"
"addl $8, %%esp\n"
:
: [TID] "m" (tid), [SYSNO] "n" (SYS_lwp_continue)
: "eax", "edx", "cc", "memory");
#elif defined(VGP_amd64_solaris)
__asm__ __volatile__ (
"movq %[SYSNO], %%rax\n"
"xor %%rdi, %%rdi\n"
"movl %[TID], %%edi\n"
"syscall\n"
:
: [TID] "r" (tid), [SYSNO] "n" (SYS_lwp_continue)
: "rax", "rdx", "rdi", "cc", "memory");
#else
# error "Unknown platform"
#endif
}
#define STACK_SIZE 16384
void _start(void) {
void *stack = allocate_stack(STACK_SIZE);
id_t tid = lwp_create((char *) stack + STACK_SIZE);
lwp_continue(tid);
sleep(5);
lwp_exit();
return; /* not reached */
}
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