--- libcoro/coro.c 2009/07/11 14:24:13 1.46 +++ libcoro/coro.c 2011/07/03 10:51:42 1.61 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2001-2009 Marc Alexander Lehmann + * Copyright (c) 2001-2011 Marc Alexander Lehmann * * Redistribution and use in source and binary forms, with or without modifica- * tion, are permitted provided that the following conditions are met: @@ -88,6 +88,10 @@ coro_transfer (new_coro, create_coro); +#if __GCC_HAVE_DWARF2_CFI_ASM && __amd64 + asm (".cfi_undefined rip"); +#endif + func ((void *)arg); /* the new coro returned. bad. just abort() for now */ @@ -112,39 +116,87 @@ # if CORO_ASM + #if _WIN32 + #define CORO_WIN_TIB 1 + #endif + asm ( - ".text\n" - ".globl coro_transfer\n" - ".type coro_transfer, @function\n" + "\t.text\n" + "\t.globl coro_transfer\n" "coro_transfer:\n" + /* windows, of course, gives a shit on the amd64 ABI and uses different registers */ + /* http://blogs.msdn.com/freik/archive/2005/03/17/398200.aspx */ #if __amd64 - #define NUM_SAVED 6 - "\tpush %rbp\n" - "\tpush %rbx\n" - "\tpush %r12\n" - "\tpush %r13\n" - "\tpush %r14\n" - "\tpush %r15\n" - "\tmov %rsp, (%rdi)\n" - "\tmov (%rsi), %rsp\n" - "\tpop %r15\n" - "\tpop %r14\n" - "\tpop %r13\n" - "\tpop %r12\n" - "\tpop %rbx\n" - "\tpop %rbp\n" + #ifdef WIN32 + /* TODO: xmm6..15 also would need to be saved. sigh. */ + #define NUM_SAVED 8 + "\tpushq %rsi\n" + "\tpushq %rdi\n" + "\tpushq %rbp\n" + "\tpushq %rbx\n" + "\tpushq %r12\n" + "\tpushq %r13\n" + "\tpushq %r14\n" + "\tpushq %r15\n" + #if CORO_WIN_TIB + "\tpushq %fs:0x0\n" + "\tpushq %fs:0x8\n" + "\tpushq %fs:0xc\n" + #endif + "\tmovq %rsp, (%rcx)\n" + "\tmovq (%rdx), %rsp\n" + #if CORO_WIN_TIB + "\tpopq %fs:0xc\n" + "\tpopq %fs:0x8\n" + "\tpopq %fs:0x0\n" + #endif + "\tpopq %r15\n" + "\tpopq %r14\n" + "\tpopq %r13\n" + "\tpopq %r12\n" + "\tpopq %rbx\n" + "\tpopq %rbp\n" + "\tpopq %rdi\n" + "\tpopq %rsi\n" + #else + #define NUM_SAVED 6 + "\tpushq %rbp\n" + "\tpushq %rbx\n" + "\tpushq %r12\n" + "\tpushq %r13\n" + "\tpushq %r14\n" + "\tpushq %r15\n" + "\tmovq %rsp, (%rdi)\n" + "\tmovq (%rsi), %rsp\n" + "\tpopq %r15\n" + "\tpopq %r14\n" + "\tpopq %r13\n" + "\tpopq %r12\n" + "\tpopq %rbx\n" + "\tpopq %rbp\n" + #endif #elif __i386 #define NUM_SAVED 4 - "\tpush %ebp\n" - "\tpush %ebx\n" - "\tpush %esi\n" - "\tpush %edi\n" - "\tmov %esp, (%eax)\n" - "\tmov (%edx), %esp\n" - "\tpop %edi\n" - "\tpop %esi\n" - "\tpop %ebx\n" - "\tpop %ebp\n" + "\tpushl %ebp\n" + "\tpushl %ebx\n" + "\tpushl %esi\n" + "\tpushl %edi\n" + #if CORO_WIN_TIB + "\tpushl %fs:0\n" + "\tpushl %fs:4\n" + "\tpushl %fs:8\n" + #endif + "\tmovl %esp, (%eax)\n" + "\tmovl (%edx), %esp\n" + #if CORO_WIN_TIB + "\tpopl %fs:8\n" + "\tpopl %fs:4\n" + "\tpopl %fs:0\n" + #endif + "\tpopl %edi\n" + "\tpopl %esi\n" + "\tpopl %ebx\n" + "\tpopl %ebp\n" #else #error unsupported architecture #endif @@ -190,8 +242,8 @@ } /* set the new stack */ - nstk.ss_sp = STACK_ADJUST_PTR (sptr,ssize); /* yes, some platforms (IRIX) get this wrong. */ - nstk.ss_size = STACK_ADJUST_SIZE (sptr,ssize); + nstk.ss_sp = STACK_ADJUST_PTR (sptr, ssize); /* yes, some platforms (IRIX) get this wrong. */ + nstk.ss_size = STACK_ADJUST_SIZE (sptr, ssize); nstk.ss_flags = 0; if (sigaltstack (&nstk, &ostk) < 0) @@ -225,21 +277,24 @@ # elif CORO_LOSER coro_setjmp (ctx->env); - #if __CYGWIN__ - ctx->env[7] = (long)((char *)sptr + ssize) - sizeof (long); - ctx->env[8] = (long)coro_init; + #if __CYGWIN__ && __i386 + ctx->env[8] = (long) coro_init; + ctx->env[7] = (long) ((char *)sptr + ssize) - sizeof (long); + #elif __CYGWIN__ && __x86_64 + ctx->env[7] = (long) coro_init; + ctx->env[6] = (long) ((char *)sptr + ssize) - sizeof (long); #elif defined(__MINGW32__) - ctx->env[4] = (long)((char *)sptr + ssize) - sizeof (long); - ctx->env[5] = (long)coro_init; + ctx->env[5] = (long) coro_init; + ctx->env[4] = (long) ((char *)sptr + ssize) - sizeof (long); #elif defined(_M_IX86) - ((_JUMP_BUFFER *)&ctx->env)->Eip = (long)coro_init; - ((_JUMP_BUFFER *)&ctx->env)->Esp = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); + ((_JUMP_BUFFER *)&ctx->env)->Eip = (long) coro_init; + ((_JUMP_BUFFER *)&ctx->env)->Esp = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); #elif defined(_M_AMD64) - ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64)coro_init; - ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); + ((_JUMP_BUFFER *)&ctx->env)->Rip = (__int64) coro_init; + ((_JUMP_BUFFER *)&ctx->env)->Rsp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); #elif defined(_M_IA64) - ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64)coro_init; - ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); + ((_JUMP_BUFFER *)&ctx->env)->StIIP = (__int64) coro_init; + ((_JUMP_BUFFER *)&ctx->env)->IntSp = (__int64) STACK_ADJUST_PTR (sptr, ssize) - sizeof (__int64); #else #error "microsoft libc or architecture not supported" #endif @@ -248,17 +303,17 @@ coro_setjmp (ctx->env); #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (JB_PC) && defined (JB_SP) - ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; - ctx->env[0].__jmpbuf[JB_SP] = (long)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); + ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init; + ctx->env[0].__jmpbuf[JB_SP] = (long) STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); #elif __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 0 && defined (__mc68000__) ctx->env[0].__jmpbuf[0].__aregs[0] = (long int)coro_init; - ctx->env[0].__jmpbuf[0].__sp = (int *)((char *)sptr + ssize) - sizeof (long); + ctx->env[0].__jmpbuf[0].__sp = (int *) ((char *)sptr + ssize) - sizeof (long); #elif defined (__GNU_LIBRARY__) && defined (__i386__) - ctx->env[0].__jmpbuf[0].__pc = (char *)coro_init; - ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize) - sizeof (long); + ctx->env[0].__jmpbuf[0].__pc = (char *) coro_init; + ctx->env[0].__jmpbuf[0].__sp = (void *) ((char *)sptr + ssize) - sizeof (long); #elif defined (__GNU_LIBRARY__) && defined (__amd64__) - ctx->env[0].__jmpbuf[JB_PC] = (long)coro_init; - ctx->env[0].__jmpbuf[0].__sp = (void *)((char *)sptr + ssize) - sizeof (long); + ctx->env[0].__jmpbuf[JB_PC] = (long) coro_init; + ctx->env[0].__jmpbuf[0].__sp = (void *) ((char *)sptr + ssize) - sizeof (long); #else #error "linux libc or architecture not supported" #endif @@ -266,15 +321,23 @@ # elif CORO_IRIX coro_setjmp (ctx->env, 0); - ctx->env[JB_PC] = (__uint64_t)coro_init; - ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); + ctx->env[JB_PC] = (__uint64_t)coro_init; + ctx->env[JB_SP] = (__uint64_t)STACK_ADJUST_PTR (sptr, ssize) - sizeof (long); # elif CORO_ASM ctx->sp = (void **)(ssize + (char *)sptr); *--ctx->sp = (void *)abort; /* needed for alignment only */ *--ctx->sp = (void *)coro_init; + + #if CORO_WIN_TIB + *--ctx->sp = 0; /* ExceptionList */ + *--ctx->sp = (char *)sptr + ssize; /* StackBase */ + *--ctx->sp = sptr; /* StackLimit */ + #endif + ctx->sp -= NUM_SAVED; + memset (ctx->sp, 0, sizeof (*ctx->sp) * NUM_SAVED); # elif CORO_UCONTEXT @@ -372,7 +435,12 @@ args.main = &nctx; pthread_attr_init (&attr); +#if __UCLIBC__ + /* exists, but is borked */ + /*pthread_attr_setstacksize (&attr, (size_t)ssize);*/ +#else pthread_attr_setstack (&attr, sptr, (size_t)ssize); +#endif pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); pthread_create (&ctx->id, &attr, coro_init, &args);