X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=os2%2Fos2.c;h=fcf1bfdef0b009a43fb0b929b82e3e9f762988ef;hb=2541781061ff0c7313c98fd8a3f90c3c73f6e201;hp=bfe6e9f2c502f3668e159d3230be5fe7210c5f08;hpb=afd1eb533c8ea286efcac6fd054ae7cebaf0dfe3;p=p5sagit%2Fp5-mst-13.2.git diff --git a/os2/os2.c b/os2/os2.c index bfe6e9f..fcf1bfd 100644 --- a/os2/os2.c +++ b/os2/os2.c @@ -29,7 +29,7 @@ #include "EXTERN.h" #include "perl.h" -#ifdef USE_THREADS +#ifdef USE_5005THREADS typedef void (*emx_startroutine)(void *); typedef void* (*pthreads_startroutine)(void *); @@ -184,6 +184,8 @@ os2_cond_wait(perl_cond *c, perl_mutex *m) } #endif +static int exe_is_aout(void); + /*****************************************************************************/ /* 2.1 would not resolve symbols on demand, and has no ExtLIBPATH. */ #define C_ARR_LEN(sym) (sizeof(sym)/sizeof(*sym)) @@ -274,10 +276,25 @@ static const struct { {&pmwin_handle, NULL, 875}, /* WinSetWindowPos */ {&pmwin_handle, NULL, 877}, /* WinSetWindowText */ {&pmwin_handle, NULL, 883}, /* WinShowWindow */ - {&pmwin_handle, NULL, 872}, /* WinIsWindow */ + {&pmwin_handle, NULL, 772}, /* WinIsWindow */ {&pmwin_handle, NULL, 899}, /* WinWindowFromId */ {&pmwin_handle, NULL, 900}, /* WinWindowFromPoint */ {&pmwin_handle, NULL, 919}, /* WinPostMsg */ + {&pmwin_handle, NULL, 735}, /* WinEnableWindow */ + {&pmwin_handle, NULL, 736}, /* WinEnableWindowUpdate */ + {&pmwin_handle, NULL, 773}, /* WinIsWindowEnabled */ + {&pmwin_handle, NULL, 774}, /* WinIsWindowShowing */ + {&pmwin_handle, NULL, 775}, /* WinIsWindowVisible */ + {&pmwin_handle, NULL, 839}, /* WinQueryWindowPtr */ + {&pmwin_handle, NULL, 843}, /* WinQueryWindowULong */ + {&pmwin_handle, NULL, 844}, /* WinQueryWindowUShort */ + {&pmwin_handle, NULL, 874}, /* WinSetWindowBits */ + {&pmwin_handle, NULL, 876}, /* WinSetWindowPtr */ + {&pmwin_handle, NULL, 878}, /* WinSetWindowULong */ + {&pmwin_handle, NULL, 879}, /* WinSetWindowUShort */ + {&pmwin_handle, NULL, 813}, /* WinQueryDesktopWindow */ + {&pmwin_handle, NULL, 851}, /* WinSetActiveWindow */ + {&doscalls_handle, NULL, 360}, /* DosQueryModFromEIP */ }; static PFN ExtFCN[C_ARR_LEN(loadOrdinals)]; /* Labeled by ord ORD_*. */ @@ -376,7 +393,7 @@ get_sysinfo(ULONG pid, ULONG flags) if (pDosVerifyPidTid) { /* Warp3 or later */ /* Up to some fixpak QuerySysState() kills the system if a non-existent pid is used. */ - if (!pDosVerifyPidTid(pid, 1)) + if (CheckOSError(pDosVerifyPidTid(pid, 1))) return 0; } New(1322, pbuffer, buf_len, char); @@ -467,6 +484,9 @@ getpriority(int which /* ignored */, int pid) /*****************************************************************************/ /* spawn */ +int emx_runtime_init; /* If 1, we need to manually init it */ +int emx_exception_init; /* If 1, we need to manually set it */ + /* There is no big sense to make it thread-specific, since signals are delivered to thread 1 only. XXXX Maybe make it into an array? */ static int spawn_pid; @@ -529,11 +549,14 @@ result(pTHX_ int flag, int pid) #endif } -#define EXECF_SPAWN 0 -#define EXECF_EXEC 1 -#define EXECF_TRUEEXEC 2 -#define EXECF_SPAWN_NOWAIT 3 -#define EXECF_SPAWN_BYFLAG 4 +enum execf_t { + EXECF_SPAWN, + EXECF_EXEC, + EXECF_TRUEEXEC, + EXECF_SPAWN_NOWAIT, + EXECF_SPAWN_BYFLAG, + EXECF_SYNC +}; /* const char* const ptypes[] = { "FS", "DOS", "VIO", "PM", "DETACH" }; */ @@ -580,6 +603,11 @@ static ULONG os2_mytype; /* Spawn/exec a program, revert to shell if needed. */ /* global PL_Argv[] contains arguments. */ +extern ULONG _emx_exception ( EXCEPTIONREPORTRECORD *, + EXCEPTIONREGISTRATIONRECORD *, + CONTEXTRECORD *, + void *); + int do_spawn_ve(pTHX_ SV *really, U32 flag, U32 execf, char *inicmd, U32 addflag) { @@ -605,14 +633,14 @@ do_spawn_ve(pTHX_ SV *really, U32 flag, U32 execf, char *inicmd, U32 addflag) if (strEQ(PL_Argv[0],"/bin/sh")) PL_Argv[0] = PL_sh_path; - if (PL_Argv[0][0] != '/' && PL_Argv[0][0] != '\\' - && !(PL_Argv[0][0] && PL_Argv[0][1] == ':' - && (PL_Argv[0][2] == '/' || PL_Argv[0][2] != '\\')) - ) /* will spawnvp use PATH? */ - TAINT_ENV(); /* testing IFS here is overkill, probably */ /* We should check PERL_SH* and PERLLIB_* as well? */ if (!really || !*(tmps = SvPV(really, n_a))) tmps = PL_Argv[0]; + if (tmps[0] != '/' && tmps[0] != '\\' + && !(tmps[0] && tmps[1] == ':' + && (tmps[2] == '/' || tmps[2] != '\\')) + ) /* will spawnvp use PATH? */ + TAINT_ENV(); /* testing IFS here is overkill, probably */ reread: force_shell = 0; @@ -654,7 +682,7 @@ do_spawn_ve(pTHX_ SV *really, U32 flag, U32 execf, char *inicmd, U32 addflag) if (flag == P_NOWAIT) flag = P_PM; else if ((flag & 7) != P_PM && (flag & 7) != P_SESSION) - Perl_warner(aTHX_ WARN_EXEC, "Starting PM process with flag=%d, mytype=%d", + Perl_warner(aTHX_ packWARN(WARN_EXEC), "Starting PM process with flag=%d, mytype=%d", flag, os2_mytype); } } @@ -665,7 +693,7 @@ do_spawn_ve(pTHX_ SV *really, U32 flag, U32 execf, char *inicmd, U32 addflag) if (flag == P_NOWAIT) flag = P_SESSION; else if ((flag & 7) != P_SESSION) - Perl_warner(aTHX_ WARN_EXEC, "Starting Full Screen process with flag=%d, mytype=%d", + Perl_warner(aTHX_ packWARN(WARN_EXEC), "Starting Full Screen process with flag=%d, mytype=%d", flag, os2_mytype); } } @@ -707,6 +735,8 @@ do_spawn_ve(pTHX_ SV *really, U32 flag, U32 execf, char *inicmd, U32 addflag) rc = spawnvp(trueflag | P_OVERLAY,tmps,PL_Argv); else if (execf == EXECF_SPAWN_NOWAIT) rc = spawnvp(flag,tmps,PL_Argv); + else if (execf == EXECF_SYNC) + rc = spawnvp(trueflag,tmps,PL_Argv); else /* EXECF_SPAWN, EXECF_SPAWN_BYFLAG */ rc = result(aTHX_ trueflag, spawnvp(flag,tmps,PL_Argv)); @@ -760,7 +790,7 @@ do_spawn_ve(pTHX_ SV *really, U32 flag, U32 execf, char *inicmd, U32 addflag) } if (PerlIO_close(file) != 0) { /* Failure */ panic_file: - Perl_warner(aTHX_ WARN_EXEC, "Error reading \"%s\": %s", + Perl_warner(aTHX_ packWARN(WARN_EXEC), "Error reading \"%s\": %s", scr, Strerror(errno)); buf = ""; /* Not #! */ goto doshell_args; @@ -804,7 +834,7 @@ do_spawn_ve(pTHX_ SV *really, U32 flag, U32 execf, char *inicmd, U32 addflag) *s++ = 0; } if (nargs == -1) { - Perl_warner(aTHX_ WARN_EXEC, "Too many args on %.*s line of \"%s\"", + Perl_warner(aTHX_ packWARN(WARN_EXEC), "Too many args on %.*s line of \"%s\"", s1 - buf, buf, scr); nargs = 4; argsp = fargs; @@ -907,7 +937,7 @@ do_spawn_ve(pTHX_ SV *really, U32 flag, U32 execf, char *inicmd, U32 addflag) } } if (rc < 0 && ckWARN(WARN_EXEC)) - Perl_warner(aTHX_ WARN_EXEC, "Can't %s \"%s\": %s\n", + Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't %s \"%s\": %s\n", ((execf != EXECF_EXEC && execf != EXECF_TRUEEXEC) ? "spawn" : "exec"), PL_Argv[0], Strerror(errno)); @@ -1001,7 +1031,7 @@ do_spawn3(pTHX_ char *cmd, int execf, int flag) should be smart enough to start itself gloriously. */ doshell: if (execf == EXECF_TRUEEXEC) - rc = execl(shell,shell,copt,cmd,(char*)0); + rc = execl(shell,shell,copt,cmd,(char*)0); else if (execf == EXECF_EXEC) rc = spawnl(P_OVERLAY,shell,shell,copt,cmd,(char*)0); else if (execf == EXECF_SPAWN_NOWAIT) @@ -1010,10 +1040,13 @@ do_spawn3(pTHX_ char *cmd, int execf, int flag) rc = spawnl(flag,shell,shell,copt,cmd,(char*)0); else { /* In the ak code internal P_NOWAIT is P_WAIT ??? */ - rc = result(aTHX_ P_WAIT, - spawnl(P_NOWAIT,shell,shell,copt,cmd,(char*)0)); + if (execf == EXECF_SYNC) + rc = spawnl(P_WAIT,shell,shell,copt,cmd,(char*)0); + else + rc = result(aTHX_ P_WAIT, + spawnl(P_NOWAIT,shell,shell,copt,cmd,(char*)0)); if (rc < 0 && ckWARN(WARN_EXEC)) - Perl_warner(aTHX_ WARN_EXEC, "Can't %s \"%s\": %s", + Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't %s \"%s\": %s", (execf == EXECF_SPAWN ? "spawn" : "exec"), shell, Strerror(errno)); if (rc < 0) @@ -1373,7 +1406,7 @@ mod2fname(pTHX_ SV *sv) } avlen --; } -#ifdef USE_THREADS +#ifdef USE_5005THREADS sum++; /* Avoid conflict of DLLs in memory. */ #endif /* We always load modules as *specific* DLLs, and with the full name. @@ -1449,6 +1482,20 @@ os2error(int rc) return buf; } +void +ResetWinError(void) +{ + WinError_2_Perl_rc; +} + +void +CroakWinError(int die, char *name) +{ + FillWinError; + if (die && Perl_rc) + croak("%s: %s", (name ? name : "Win* API call"), os2error(Perl_rc)); +} + char * os2_execname(pTHX) { @@ -1543,8 +1590,9 @@ Perl_Register_MQ(int serve) PPIB pib; PTIB tib; - if (Perl_os2_initial_mode++) + if (Perl_hmq_refcnt > 0) return Perl_hmq; + Perl_hmq_refcnt = 0; /* Be extra safe */ DosGetInfoBlocks(&tib, &pib); Perl_os2_initial_mode = pib->pib_ultype; /* Try morphing into a PM application. */ @@ -1959,6 +2007,9 @@ XS(XS_Cwd_sys_cwd) RETVAL = _getcwd2(p, MAXPATHLEN); ST(0) = sv_newmortal(); sv_setpv((SV*)ST(0), RETVAL); +#ifndef INCOMPLETE_TAINTS + SvTAINTED_on(ST(0)); +#endif } XSRETURN(1); } @@ -2173,6 +2224,78 @@ XS(XS_Cwd_extLibpath_set) XSRETURN(1); } +/* Input: Address, BufLen +APIRET APIENTRY +DosQueryModFromEIP (HMODULE * hmod, ULONG * obj, ULONG BufLen, PCHAR Buf, + ULONG * Offset, ULONG Address); +*/ + +DeclOSFuncByORD(APIRET, _DosQueryModFromEIP,ORD_DosQueryModFromEIP, + (HMODULE * hmod, ULONG * obj, ULONG BufLen, PCHAR Buf, + ULONG * Offset, ULONG Address), + (hmod, obj, BufLen, Buf, Offset, Address)) + +enum module_name_how { mod_name_handle, mod_name_shortname, mod_name_full}; + +static SV* +module_name_at(void *pp, enum module_name_how how) +{ + char buf[MAXPATHLEN]; + char *p = buf; + HMODULE mod; + ULONG obj, offset, rc; + + if (!_DosQueryModFromEIP(&mod, &obj, sizeof(buf), buf, &offset, (ULONG)pp)) + return &PL_sv_undef; + if (how == mod_name_handle) + return newSVuv(mod); + /* Full name... */ + if ( how == mod_name_full + && CheckOSError(DosQueryModuleName(mod, sizeof(buf), buf)) ) + return &PL_sv_undef; + while (*p) { + if (*p == '\\') + *p = '/'; + p++; + } + return newSVpv(buf, 0); +} + +static SV* +module_name_of_cv(SV *cv, enum module_name_how how) +{ + if (!cv || !SvROK(cv) || SvTYPE(SvRV(cv)) != SVt_PVCV || !CvXSUB(SvRV(cv))) + croak("Not an XSUB reference"); + return module_name_at(CvXSUB(SvRV(cv)), how); +} + +/* Find module name to which *this* subroutine is compiled */ +#define module_name(how) module_name_at(&module_name_at, how) + +XS(XS_OS2_DLLname) +{ + dXSARGS; + if (items > 2) + Perl_croak(aTHX_ "Usage: OS2::DLLname( [ how, [\\&xsub] ] )"); + { + SV * RETVAL; + int how; + + if (items < 1) + how = mod_name_full; + else { + how = (int)SvIV(ST(0)); + } + if (items < 2) + RETVAL = module_name(how); + else + RETVAL = module_name_of_cv(ST(1), how); + ST(0) = RETVAL; + sv_2mortal(ST(0)); + } + XSRETURN(1); +} + #define get_control87() _control87(0,0) #define set_control87 _control87 @@ -2270,11 +2393,15 @@ Xs_OS2_init(pTHX) newXSproto("OS2::_control87", XS_OS2__control87, file, "$$"); newXSproto("OS2::get_control87", XS_OS2_get_control87, file, ""); newXSproto("OS2::set_control87", XS_OS2_set_control87, file, ";$$"); + newXSproto("OS2::DLLname", XS_OS2_DLLname, file, ";$$"); gv = gv_fetchpv("OS2::is_aout", TRUE, SVt_PV); GvMULTI_on(gv); #ifdef PERL_IS_AOUT sv_setiv(GvSV(gv), 1); -#endif +#endif + gv = gv_fetchpv("OS2::can_fork", TRUE, SVt_PV); + GvMULTI_on(gv); + sv_setiv(GvSV(gv), exe_is_aout()); gv = gv_fetchpv("OS2::emx_rev", TRUE, SVt_PV); GvMULTI_on(gv); sv_setiv(GvSV(gv), _emx_rev); @@ -2295,18 +2422,325 @@ Xs_OS2_init(pTHX) OS2_Perl_data_t OS2_Perl_data; +extern void _emx_init(void*); + +static void jmp_out_of_atexit(void); + +#define FORCE_EMX_INIT_CONTRACT_ARGV 1 +#define FORCE_EMX_INIT_INSTALL_ATEXIT 2 + +static void +my_emx_init(void *layout) { + static volatile void *p = 0; /* Cannot be on stack! */ + + /* Can't just call emx_init(), since it moves the stack pointer */ + /* It also busts a lot of registers, so be extra careful */ + __asm__( "pushf\n" + "pusha\n" + "movl %%esp, %1\n" + "push %0\n" + "call __emx_init\n" + "movl %1, %%esp\n" + "popa\n" + "popf\n" : : "r" (layout), "m" (p) ); +} + +struct layout_table_t { + ULONG text_base; + ULONG text_end; + ULONG data_base; + ULONG data_end; + ULONG bss_base; + ULONG bss_end; + ULONG heap_base; + ULONG heap_end; + ULONG heap_brk; + ULONG heap_off; + ULONG os2_dll; + ULONG stack_base; + ULONG stack_end; + ULONG flags; + ULONG reserved[2]; + char options[64]; +}; + +static ULONG +my_os_version() { + static ULONG res; /* Cannot be on stack! */ + + /* Can't just call __os_version(), since it does not follow C + calling convention: it busts a lot of registers, so be extra careful */ + __asm__( "pushf\n" + "pusha\n" + "call ___os_version\n" + "movl %%eax, %0\n" + "popa\n" + "popf\n" : "=m" (res) ); + + return res; +} + +static void +force_init_emx_runtime(EXCEPTIONREGISTRATIONRECORD *preg, ULONG flags) +{ + /* Calling emx_init() will bust the top of stack: it installs an + exception handler and puts argv data there. */ + char *oldarg, *oldenv; + void *oldstackend, *oldstack; + PPIB pib; + PTIB tib; + static ULONG os2_dll; + ULONG rc, error = 0, out; + char buf[512]; + static struct layout_table_t layout_table; + struct { + char buf[48*1024]; /* _emx_init() requires 32K, cmd.exe has 64K only */ + double alignment1; + EXCEPTIONREGISTRATIONRECORD xreg; + } *newstack; + char *s; + + layout_table.os2_dll = (ULONG)&os2_dll; + layout_table.flags = 0x02000002; /* flags: application, OMF */ + + DosGetInfoBlocks(&tib, &pib); + oldarg = pib->pib_pchcmd; + oldenv = pib->pib_pchenv; + oldstack = tib->tib_pstack; + oldstackend = tib->tib_pstacklimit; + + /* Minimize the damage to the stack via reducing the size of argv. */ + if (flags & FORCE_EMX_INIT_CONTRACT_ARGV) { + pib->pib_pchcmd = "\0\0"; /* Need 3 concatenated strings */ + pib->pib_pchcmd = "\0"; /* Ended by an extra \0. */ + } + + newstack = alloca(sizeof(*newstack)); + /* Emulate the stack probe */ + s = ((char*)newstack) + sizeof(*newstack); + while (s > (char*)newstack) { + s[-1] = 0; + s -= 4096; + } + + /* Reassigning stack is documented to work */ + tib->tib_pstack = (void*)newstack; + tib->tib_pstacklimit = (void*)((char*)newstack + sizeof(*newstack)); + + /* Can't just call emx_init(), since it moves the stack pointer */ + my_emx_init((void*)&layout_table); + + /* Remove the exception handler, cannot use it - too low on the stack. + Check whether it is inside the new stack. */ + buf[0] = 0; + if (tib->tib_pexchain >= tib->tib_pstacklimit + || tib->tib_pexchain < tib->tib_pstack) { + error = 1; + sprintf(buf, + "panic: ExceptionHandler misplaced: not %#lx <= %#lx < %#lx\n", + (unsigned long)tib->tib_pstack, + (unsigned long)tib->tib_pexchain, + (unsigned long)tib->tib_pstacklimit); + goto finish; + } + if (tib->tib_pexchain != &(newstack->xreg)) { + sprintf(buf, "ExceptionHandler misplaced: %#lx != %#lx\n", + (unsigned long)tib->tib_pexchain, + (unsigned long)&(newstack->xreg)); + } + rc = DosUnsetExceptionHandler((EXCEPTIONREGISTRATIONRECORD *)tib->tib_pexchain); + if (rc) + sprintf(buf + strlen(buf), + "warning: DosUnsetExceptionHandler rc=%#lx=%lu\n", rc, rc); + + if (preg) { + /* ExceptionRecords should be on stack, in a correct order. Sigh... */ + preg->prev_structure = 0; + preg->ExceptionHandler = _emx_exception; + rc = DosSetExceptionHandler(preg); + if (rc) { + sprintf(buf + strlen(buf), + "warning: DosSetExceptionHandler rc=%#lx=%lu\n", rc, rc); + DosWrite(2, buf, strlen(buf), &out); + emx_exception_init = 1; /* Do it around spawn*() calls */ + } + } else + emx_exception_init = 1; /* Do it around spawn*() calls */ + + finish: + /* Restore the damage */ + pib->pib_pchcmd = oldarg; + pib->pib_pchcmd = oldenv; + tib->tib_pstacklimit = oldstackend; + tib->tib_pstack = oldstack; + emx_runtime_init = 1; + if (buf[0]) + DosWrite(2, buf, strlen(buf), &out); + if (error) + exit(56); +} + +jmp_buf at_exit_buf; +int longjmp_at_exit; + +static void +jmp_out_of_atexit(void) +{ + if (longjmp_at_exit) + longjmp(at_exit_buf, 1); +} + +extern void _CRT_term(void); + +int emx_runtime_secondary; + +void +Perl_OS2_term(void **p, int exitstatus, int flags) +{ + if (!emx_runtime_secondary) + return; + + /* The principal executable is not running the same CRTL, so there + is nobody to shutdown *this* CRTL except us... */ + if (flags & FORCE_EMX_DEINIT_EXIT) { + if (p && !emx_exception_init) + DosUnsetExceptionHandler((EXCEPTIONREGISTRATIONRECORD *)p); + /* Do not run the executable's CRTL's termination routines */ + exit(exitstatus); /* Run at-exit, flush buffers, etc */ + } + /* Run at-exit list, and jump out at the end */ + if ((flags & FORCE_EMX_DEINIT_RUN_ATEXIT) && !setjmp(at_exit_buf)) { + longjmp_at_exit = 1; + exit(exitstatus); /* The first pass through "if" */ + } + + /* Get here if we managed to jump out of exit(), or did not run atexit. */ + longjmp_at_exit = 0; /* Maybe exit() is called again? */ +#if 0 /* _atexit_n is not exported */ + if (flags & FORCE_EMX_DEINIT_RUN_ATEXIT) + _atexit_n = 0; /* Remove the atexit() handlers */ +#endif + /* Will segfault on program termination if we leave this dangling... */ + if (p && !emx_exception_init) + DosUnsetExceptionHandler((EXCEPTIONREGISTRATIONRECORD *)p); + /* Typically there is no need to do this, done from _DLL_InitTerm() */ + if (flags & FORCE_EMX_DEINIT_CRT_TERM) + _CRT_term(); /* Flush buffers, etc. */ + /* Now it is a good time to call exit() in the caller's CRTL... */ +} + +#include + +extern ULONG __os_version(); /* See system.doc */ + +static int emx_wasnt_initialized; + +void +check_emx_runtime(char **env, EXCEPTIONREGISTRATIONRECORD *preg) +{ + ULONG v_crt, v_emx; + + /* If _environ is not set, this code sits in a DLL which + uses a CRT DLL which not compatible with the executable's + CRT library. Some parts of the DLL are not initialized. + */ + if (_environ != NULL) + return; /* Properly initialized */ + + /* If the executable does not use EMX.DLL, EMX.DLL is not completely + initialized either. Uninitialized EMX.DLL returns 0 in the low + nibble of __os_version(). */ + v_emx = my_os_version(); + + /* _osmajor and _osminor are normally set in _DLL_InitTerm of CRT DLL + (=>_CRT_init=>_entry2) via a call to __os_version(), then + reset when the EXE initialization code calls _text=>_init=>_entry2. + The first time they are wrongly set to 0; the second time the + EXE initialization code had already called emx_init=>initialize1 + which correctly set version_major, version_minor used by + __os_version(). */ + v_crt = (_osmajor | _osminor); + + if ((_emx_env & 0x200) && !(v_emx & 0xFFFF)) { /* OS/2, EMX uninit. */ + force_init_emx_runtime( preg, + FORCE_EMX_INIT_CONTRACT_ARGV + | FORCE_EMX_INIT_INSTALL_ATEXIT ); + emx_wasnt_initialized = 1; + /* Update CRTL data basing on now-valid EMX runtime data */ + if (!v_crt) { /* The only wrong data are the versions. */ + v_emx = my_os_version(); /* *Now* it works */ + *(unsigned char *)&_osmajor = v_emx & 0xFF; /* Cast out const */ + *(unsigned char *)&_osminor = (v_emx>>8) & 0xFF; + } + } + emx_runtime_secondary = 1; + /* if (flags & FORCE_EMX_INIT_INSTALL_ATEXIT) */ + atexit(jmp_out_of_atexit); /* Allow run of atexit() w/o exit() */ + + if (env == NULL) { /* Fetch from the process info block */ + int c = 0; + PPIB pib; + PTIB tib; + char *e, **ep; + + DosGetInfoBlocks(&tib, &pib); + e = pib->pib_pchenv; + while (*e) { /* Get count */ + c++; + e = e + strlen(e) + 1; + } + New(1307, env, c + 1, char*); + ep = env; + e = pib->pib_pchenv; + while (c--) { + *ep++ = e; + e = e + strlen(e) + 1; + } + *ep = NULL; + } + _environ = _org_environ = env; +} + +#define ENTRY_POINT 0x10000 + +static int +exe_is_aout(void) +{ + struct layout_table_t *layout; + if (emx_wasnt_initialized) + return 0; + /* Now we know that the principal executable is an EMX application + - unless somebody did already play with delayed initialization... */ + /* With EMX applications to determine whether it is AOUT one needs + to examine the start of the executable to find "layout" */ + if ( *(unsigned char*)ENTRY_POINT != 0x68 /* PUSH n */ + || *(unsigned char*)(ENTRY_POINT+5) != 0xe8 /* CALL */ + || *(unsigned char*)(ENTRY_POINT+10) != 0xeb /* JMP */ + || *(unsigned char*)(ENTRY_POINT+12) != 0xe8) /* CALL */ + return 0; /* ! EMX executable */ + /* Fix alignment */ + Copy((char*)(ENTRY_POINT+1), &layout, 1, struct layout_table_t*); + return !(layout->flags & 2); +} + void Perl_OS2_init(char **env) { + Perl_OS2_init3(env, 0, 0); +} + +void +Perl_OS2_init3(char **env, void **preg, int flags) +{ char *shell; + _uflags (_UF_SBRK_MODEL, _UF_SBRK_ARBITRARY); MALLOC_INIT; + + check_emx_runtime(env, (EXCEPTIONREGISTRATIONRECORD *)preg); + settmppath(); OS2_Perl_data.xs_init = &Xs_OS2_init; - _uflags (_UF_SBRK_MODEL, _UF_SBRK_ARBITRARY); - if (environ == NULL && env) { - environ = env; - } if ( (shell = getenv("PERL_SH_DRIVE")) ) { New(1304, PL_sh_path, strlen(SH_PATH) + 1, char); strcpy(PL_sh_path, SH_PATH); @@ -2413,21 +2847,21 @@ my_flock(int handle, int o) if (!(_emx_env & 0x200) || !use_my) return flock(handle, o); /* Delegate to EMX. */ - // is this a file? + /* is this a file? */ if ((DosQueryHType(handle, &handle_type, &flag_word) != 0) || (handle_type & 0xFF)) { errno = EBADF; return -1; } - // set lock/unlock ranges + /* set lock/unlock ranges */ rNull.lOffset = rNull.lRange = rFull.lOffset = 0; rFull.lRange = 0x7FFFFFFF; - // set timeout for blocking + /* set timeout for blocking */ timeout = ((blocking = !(o & LOCK_NB))) ? 100 : 1; - // shared or exclusive? + /* shared or exclusive? */ shared = (o & LOCK_SH) ? 1 : 0; - // do not block the unlock + /* do not block the unlock */ if (o & (LOCK_UN | LOCK_SH | LOCK_EX)) { rc = DosSetFileLocks(handle, &rFull, &rNull, timeout, shared); switch (rc) { @@ -2441,7 +2875,7 @@ my_flock(int handle, int o) errno = ENOLCK; return -1; case ERROR_LOCK_VIOLATION: - break; // not an error + break; /* not an error */ case ERROR_INVALID_PARAMETER: case ERROR_ATOMIC_LOCK_NOT_SUPPORTED: case ERROR_READ_LOCKS_NOT_SUPPORTED: @@ -2455,9 +2889,9 @@ my_flock(int handle, int o) return -1; } } - // lock may block + /* lock may block */ if (o & (LOCK_SH | LOCK_EX)) { - // for blocking operations + /* for blocking operations */ for (;;) { rc = DosSetFileLocks( @@ -2495,7 +2929,7 @@ my_flock(int handle, int o) errno = EINVAL; return -1; } - // give away timeslice + /* give away timeslice */ DosSleep(1); } } @@ -2549,7 +2983,7 @@ my_getpwent (void) if (!use_my_pwent()) return getpwent(); /* Delegate to EMX. */ if (pwent_cnt++) - return 0; // Return one entry only + return 0; /* Return one entry only */ return getpwuid(0); } @@ -2570,7 +3004,7 @@ struct group * getgrent (void) { if (grent_cnt++) - return 0; // Return one entry only + return 0; /* Return one entry only */ return getgrgid(0); } @@ -2608,3 +3042,9 @@ my_getpwnam (__const__ char *n) { return passw_wrap(getpwnam(n)); } + +char * +gcvt_os2 (double value, int digits, char *buffer) +{ + return gcvt (value, digits, buffer); +}