}
#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))
/*****************************************************************************/
/* 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;
#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" }; */
/* 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)
{
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));
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)
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",
(execf == EXECF_SPAWN ? "spawn" : "exec"),
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);
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 emx_init(), since it moves the stack pointer */
+ /* It also 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 <emx/startup.h>
+
+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) { /* 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;
+ }
+ 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);
projects / p5sagit/p5-mst-13.2.git / blobdiff