xscale-elf support
From-SVN: r49626
This commit is contained in:
Anthony Green
Anthony Green
parent
85aa876c4b
commit
b6459d9a78
@ -1,3 +1,14 @@
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2001-02-08 Anthony Green <green@redhat.com>
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* include/private/gcconfig.h: Add XSCALE NOSYS support for bare
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board embedded targets.
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* os_dep.c: Avoid signal handling code for NOSYS/ECOS targets.
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Use GC_get_stack_base for NOSYS/ECOS targets. Clean up some
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redundant uses of ECOS.
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* misc.c: Use NOSYS where ECOS is being used.
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Don't define GC_write twice for ECOS systems.
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(GC_write): New function for NOSYS targets.
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2002-02-06 Adam Megacz <adam@xwt.org>
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* boehm-gc/include/gc.h: (GC_CreateThread) This function is
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@ -39,6 +39,13 @@
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# endif
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/* Determine the machine type: */
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# if defined(__XSCALE__)
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# define ARM32
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# if !defined(LINUX)
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# define NOSYS
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# define mach_type_known
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# endif
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# endif
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# if defined(sun) && defined(mc68000)
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# define M68K
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# define SUNOS4
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@ -1495,6 +1502,15 @@
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# define OS_TYPE "MSWINCE"
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# define DATAEND /* not needed */
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# endif
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# ifdef NOSYS
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/* __data_start is usually defined in the target linker script. */
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extern int __data_start;
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# define DATASTART (ptr_t)(&__data_start)
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# define USE_GENERIC_PUSH_REGS
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/* __stack_base__ is set in newlib/libc/sys/arm/crt0.S */
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extern void *__stack_base__;
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# define STACKBOTTOM ((ptr_t) (__stack_base__))
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# endif
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#endif
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# ifdef SH
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@ -69,7 +69,7 @@
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# endif
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# endif
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#ifdef ECOS
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#if defined(NOSYS) || defined(ECOS)
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#undef STACKBASE
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#endif
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@ -744,7 +744,8 @@ int GC_tmp; /* Should really be local ... */
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# endif
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#endif
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#if !defined(MSWIN32) && !defined(MSWINCE) && !defined(OS2) && !defined(MACOS)
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#if !defined(MSWIN32) && !defined(MSWINCE) && !defined(OS2) \
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&& !defined(MACOS) && !defined(ECOS) && !defined(NOSYS)
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int GC_write(fd, buf, len)
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int fd;
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GC_CONST char *buf;
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@ -767,7 +768,7 @@ size_t len;
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}
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#endif /* UN*X */
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#if defined(ECOS)
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#ifdef ECOS
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int GC_write(fd, buf, len)
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{
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_Jv_diag_write (buf, len);
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@ -775,6 +776,14 @@ int GC_write(fd, buf, len)
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}
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#endif
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#ifdef NOSYS
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int GC_write(fd, buf, len)
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{
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/* No writing. */
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return len;
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}
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#endif
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#if defined(MSWIN32) || defined(MSWINCE)
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# define WRITE(f, buf, len) GC_write(buf, len)
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@ -333,7 +333,8 @@ void GC_enable_signals(void)
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# if !defined(PCR) && !defined(AMIGA) && !defined(MSWIN32) \
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&& !defined(MSWINCE) \
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&& !defined(MACOS) && !defined(DJGPP) && !defined(DOS4GW)
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&& !defined(MACOS) && !defined(DJGPP) && !defined(DOS4GW) \
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&& !defined(NOSYS) && !defined(ECOS)
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# if defined(sigmask) && !defined(UTS4) && !defined(HURD)
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/* Use the traditional BSD interface */
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@ -516,7 +517,7 @@ ptr_t GC_get_stack_base()
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# undef GC_AMIGA_SB
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# endif /* AMIGA */
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# if defined(NEED_FIND_LIMIT) || (defined(UNIX_LIKE) && !defined(ECOS))
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# if defined(NEED_FIND_LIMIT) || defined(UNIX_LIKE)
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# ifdef __STDC__
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typedef void (*handler)(int);
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@ -540,8 +541,7 @@ ptr_t GC_get_stack_base()
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handler h;
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# endif
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{
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# ifndef ECOS
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# if defined(SUNOS5SIGS) || defined(IRIX5) \
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# if defined(SUNOS5SIGS) || defined(IRIX5) \
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|| defined(OSF1) || defined(HURD)
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struct sigaction act;
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@ -579,7 +579,6 @@ ptr_t GC_get_stack_base()
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old_bus_handler = signal(SIGBUS, h);
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# endif
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# endif
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# endif /* ECOS */
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}
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# endif /* NEED_FIND_LIMIT || UNIX_LIKE */
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@ -602,21 +601,19 @@ ptr_t GC_get_stack_base()
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void GC_reset_fault_handler()
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{
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# ifndef ECOS
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# if defined(SUNOS5SIGS) || defined(IRIX5) \
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|| defined(OSF1) || defined(HURD)
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(void) sigaction(SIGSEGV, &old_segv_act, 0);
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# if defined(IRIX5) && defined(_sigargs) /* Irix 5.x, not 6.x */ \
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|| defined(HPUX) || defined(HURD)
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(void) sigaction(SIGBUS, &old_bus_act, 0);
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# endif
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# else
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(void) signal(SIGSEGV, old_segv_handler);
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# ifdef SIGBUS
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(void) signal(SIGBUS, old_bus_handler);
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# endif
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# endif
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# endif /* ECOS */
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# if defined(SUNOS5SIGS) || defined(IRIX5) \
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|| defined(OSF1) || defined(HURD)
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(void) sigaction(SIGSEGV, &old_segv_act, 0);
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# if defined(IRIX5) && defined(_sigargs) /* Irix 5.x, not 6.x */ \
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|| defined(HPUX) || defined(HURD)
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(void) sigaction(SIGBUS, &old_bus_act, 0);
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# endif
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# else
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(void) signal(SIGSEGV, old_segv_handler);
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# ifdef SIGBUS
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(void) signal(SIGBUS, old_bus_handler);
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# endif
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# endif
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}
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/* Return the first nonaddressible location > p (up) or */
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@ -625,39 +622,41 @@ ptr_t GC_get_stack_base()
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ptr_t p;
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GC_bool up;
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{
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# ifndef ECOS
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static VOLATILE ptr_t result;
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/* Needs to be static, since otherwise it may not be */
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/* preserved across the longjmp. Can safely be */
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/* static since it's only called once, with the */
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/* allocation lock held. */
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static VOLATILE ptr_t result;
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/* Needs to be static, since otherwise it may not be */
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/* preserved across the longjmp. Can safely be */
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/* static since it's only called once, with the */
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/* allocation lock held. */
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GC_setup_temporary_fault_handler();
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if (setjmp(GC_jmp_buf) == 0) {
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result = (ptr_t)(((word)(p))
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& ~(MIN_PAGE_SIZE-1));
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for (;;) {
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if (up) {
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result += MIN_PAGE_SIZE;
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} else {
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result -= MIN_PAGE_SIZE;
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}
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GC_noop1((word)(*result));
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}
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}
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GC_reset_fault_handler();
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if (!up) {
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GC_setup_temporary_fault_handler();
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if (setjmp(GC_jmp_buf) == 0) {
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result = (ptr_t)(((word)(p))
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& ~(MIN_PAGE_SIZE-1));
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for (;;) {
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if (up) {
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result += MIN_PAGE_SIZE;
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}
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return(result);
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# else /* ECOS */
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abort();
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# endif /* ECOS */
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} else {
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result -= MIN_PAGE_SIZE;
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}
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GC_noop1((word)(*result));
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}
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}
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GC_reset_fault_handler();
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if (!up) {
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result += MIN_PAGE_SIZE;
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}
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return(result);
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}
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# endif
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# ifndef ECOS
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# if defined(ECOS) || defined(NOSYS)
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ptr_t GC_get_stack_base()
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{
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return STACKBOTTOM;
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}
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#else
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#ifdef LINUX_STACKBOTTOM
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@ -761,7 +760,7 @@ ptr_t GC_get_stack_base()
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#endif /* FREEBSD_STACKBOTTOM */
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#if !defined(BEOS) && !defined(AMIGA) && !defined(MSWIN32) \
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&& !defined(MSWINCE) && !defined(OS2) && !defined(ECOS)
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&& !defined(MSWINCE) && !defined(OS2)
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ptr_t GC_get_stack_base()
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{
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@ -815,7 +814,7 @@ ptr_t GC_get_stack_base()
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return(result);
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# endif /* STACKBOTTOM */
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}
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# endif /* ECOS */
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# endif /* NOSYS ECOS */
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# endif /* ! AMIGA, !OS 2, ! MS Windows, !BEOS */
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