2011-12-15 Konrad Eisele <konrad@gaisler.com>

        * configure.in: Add SPARC LEON support.
        * configure: Regenerated.
        * sparc_leon/asm-leon/amba.h, sparc_leon/asm-leon/asmmacro.h,
        sparc_leon/asm-leon/clock.h, sparc_leon/asm-leon/contextswitch.h,
        sparc_leon/asm-leon/elfmacro.h, sparc_leon/asm-leon/head.h,
        sparc_leon/asm-leon/irq.h, sparc_leon/asm-leon/jiffies.h,
        sparc_leon/asm-leon/lambapp.h, sparc_leon/asm-leon/lambapp_devs.h,
        sparc_leon/asm-leon/leon.h, sparc_leon/asm-leon/leon3.h,
        sparc_leon/asm-leon/leonbare_debug.h, sparc_leon/asm-leon/leonbare_kernel.h,
        sparc_leon/asm-leon/leonbare_kernel_queue.h, sparc_leon/asm-leon/leoncompat.h,
        sparc_leon/asm-leon/leondbg.h, sparc_leon/asm-leon/leonstack.h,
        sparc_leon/asm-leon/liblocks.h, sparc_leon/asm-leon/linkage.h,
        sparc_leon/asm-leon/param.h, sparc_leon/asm-leon/queue.h,
        sparc_leon/asm-leon/spinlock.h, sparc_leon/asm-leon/stack.h,
        sparc_leon/asm-leon/time.h, sparc_leon/asm-leon/timer.h,
        sparc_leon/asm-leon/types.h, sparc_leon/asm-leon/winmacros.h:
        New file.
        * sparc_leon/Makefile.in, sparc_leon/_exit.c,
        sparc_leon/amba.c, sparc_leon/amba_dbg.c,
        sparc_leon/amba_driver.c, sparc_leon/amba_scan.c,
        sparc_leon/asm-leon, sparc_leon/bdinit.S,
        sparc_leon/busscan.S, sparc_leon/cacheA.S,
        sparc_leon/catch_interrupt.c, sparc_leon/catch_interrupt_mvt.c,
        sparc_leon/catch_interrupt_pending.c, sparc_leon/catch_interrupt_svt.c,
        sparc_leon/configure.in,
        sparc_leon/console.c, sparc_leon/console_dbg.c,
        sparc_leon/console_init.c, sparc_leon/contextswitch.c,
        sparc_leon/contextswitch_asm.S, sparc_leon/crt0.S,
        sparc_leon/crti.S, sparc_leon/crtn.S,
        sparc_leon/etrap.S, sparc_leon/etrap_fast.S,
        sparc_leon/fpu.S, sparc_leon/gettimeofday.c,
        sparc_leon/initcalls.c, sparc_leon/io.c,
        sparc_leon/irqinstall.S, sparc_leon/irqtrap.S,
        sparc_leon/irqtrap_fast.S, sparc_leon/jiffies.c,
        sparc_leon/kernel.c, sparc_leon/kernel_context.S,
        sparc_leon/kernel_debug.c, sparc_leon/kernel_debug_var.c,
        sparc_leon/kernel_mm.c, sparc_leon/kernel_mutex.c,
        sparc_leon/kernel_queue.c, sparc_leon/kernel_sched.c,
        sparc_leon/kernel_thread.c, sparc_leon/lcpuinit.S,
        sparc_leon/locore.S, sparc_leon/locore_atexit.c,
        sparc_leon/locore_clean.S, sparc_leon/locore_mvt.S,
        sparc_leon/locore_mvt_reset.S, sparc_leon/locore_svt.S,
        sparc_leon/locore_svt_reset.S, sparc_leon/locore_svtdisp.S,
        sparc_leon/locore_var.S, sparc_leon/locore_var_svt.S,
        sparc_leon/mmu_asm.S, sparc_leon/mutex.c,
        sparc_leon/nocache.S, sparc_leon/pnpinit.c,
        sparc_leon/pnpinit_malloc.c, sparc_leon/pnpinit_simple.c,
        sparc_leon/regwin.S, sparc_leon/regwin_patch.c,
        sparc_leon/regwin_slow.S, sparc_leon/regwinflush.S,
        sparc_leon/rtc.c, sparc_leon/rtrap.S,
        sparc_leon/rtrap_fast.S, sparc_leon/stop.S,
        sparc_leon/timer.c, sparc_leon/times.c:
        New file
        * sparc_leon/configure: Regenerate

1 files changed, 121 insertions, 0 deletions

diff --git a/libgloss/sparc_leon/contextswitch.c b/libgloss/sparc_leon/contextswitch.c
new file mode 100644
index 000000000..7aafec41f
--- /dev/null
+++ b/libgloss/sparc_leon/contextswitch.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2011 Aeroflex Gaisler
+ *
+ * BSD license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+#include <asm-leon/leon.h>
+#include <asm-leon/leonstack.h>
+#include <asm-leon/irq.h>
+#include <asm-leon/irq.h>
+#include <asm-leon/time.h>
+#include <asm-leon/contextswitch.h>
+
+/* This asm code relies on the following offsets (setjmp.h): 
+#define THREAD_JB_SP     0 
+#define THREAD_JB_PC     1
+#define THREAD_JB_PSR    8 
+#define THREAD_JB_WIM    9 */
+
+int
+_do_thread_setjmp (threadctx_t env, unsigned int savesigs)
+{
+
+#ifndef _FLAT
+  /* first restore should trap */
+  env[THREAD_JB_WIM] = 1 << ((env[THREAD_JB_PSR] & SPARC_PSR_WIN_MASK) + 1);
+  env[THREAD_JB_WIM] |= env[THREAD_JB_WIM] >> SPARC_NUM_REGWIN;
+#else
+  env[THREAD_JB_WIM] = 0;
+#endif
+
+#ifndef _SOFT_FLOAT
+  env[THREAD_JB_FPUCTX] = fpustate_current;
+#endif
+  return 0;
+}
+
+void
+thread_longjmp (threadctx_t env, int val)
+{
+
+  if (!val)
+    val = 1;
+
+#ifndef _SOFT_FLOAT
+  fpustate_current = env[THREAD_JB_FPUCTX];
+#endif
+
+  _switch_to (env, val);
+
+/*   __asm__ __volatile__(                                                                      \ */
+/* "        mov     %8,%%i0              /\* propagate on restore *\/                        \n\t"\ */
+/* "        mov     %0,%%i1              /\* propagate on restore *\/                        \n\t"\ */
+/* "        restore                                                                        \n\t"\ */
+/* "        mov     %%o0,%%g6                                                              \n\t"\ */
+/* "        mov     %%o1,%%g3            /\* former %%i1 (val) *\/                           \n\t"\ */
+/* "                                                                                       \n\t"\ */
+/* "        !ta      0x03                /\* flush registers *\/                             \n\t"\ */
+/* "        save   %%sp, %7, %%sp                                                          \n\t"\ */
+/* "        save   %%sp, %7, %%sp                                                          \n\t"\ */
+/* "        save   %%sp, %7, %%sp                                                          \n\t"\ */
+/* "        save   %%sp, %7, %%sp                                                          \n\t"\ */
+/* "        save   %%sp, %7, %%sp                                                          \n\t"\ */
+/* "        save   %%sp, %7, %%sp                                                          \n\t"\ */
+/* "        save   %%sp, %7, %%sp                                                          \n\t"\ */
+/* "                                                                                       \n\t"\ */
+/* "        ldd     [%%g6+%5], %%g4      /\* load psr,wim *\/                                \n\t"\ */
+/* "        wr      %%g4, 0x20, %%psr                                                      \n\t"\ */
+/* "        nop                                                                            \n\t"\ */
+/* "        nop                                                                            \n\t"\ */
+/* "        nop                                                                            \n\t"\ */
+/* "        ldd     [%%g6 +%1], %%sp     /\* load sp, pc to jump to *\/                      \n\t"\ */
+/* "        wr      %%g5, 0x0, %%wim                                                       \n\t"\ */
+/* "                                                                                       \n\t"\ */
+/* "        ldd     [%%sp], %%l0         /\* restore window *\/                              \n\t"\ */
+/* "        ldd     [%%sp+8], %%l2                                                         \n\t"\ */
+/* "        ldd     [%%sp+16], %%l4                                                        \n\t"\ */
+/* "        ldd     [%%sp+24], %%l6                                                        \n\t"\ */
+/* "                                                                                       \n\t"\ */
+/* "        ldd     [%%sp+32], %%i0                                                        \n\t"\ */
+/* "        ldd     [%%sp+40], %%i2                                                        \n\t"\ */
+/* "        ldd     [%%sp+48], %%i4                                                        \n\t"\ */
+/* "        ldd     [%%sp+56], %%i6                                                        \n\t"\ */
+/* "        wr      %%g4, 0x00, %%psr                                                      \n\t"\ */
+/* "        nop                                                                            \n\t"\ */
+/* "        nop                                                                            \n\t"\ */
+/* "        nop                                                                            \n\t"\ */
+/* "                                                                                       \n\t"\ */
+/* "        jmp     %%o7 + 8             /\* success      *\/                                \n\t"\ */
+/* "        mov     %%g3, %%o0           /\* return %%g3  *\/                                \n\t"\ */
+/* : : /\* %0 *\/ "r" (val),                                                                      \ */
+/*     /\* %1 *\/ "i" (sizeof(int) * THREAD_JB_SP),                                                      \ */
+/*     /\* %2 *\/ "i" (sizeof(int) * THREAD_JB_I7),                                                      \ */
+/*     /\* %3 *\/ "i" (sizeof(int) * THREAD_JB_FP),                                                      \ */
+/*     /\* %4 *\/ "i" (sizeof(int) * THREAD_JB_PC),                                                      \ */
+/*     /\* %5 *\/ "i" (sizeof(int) * THREAD_JB_PSR),                                                     \ */
+/*     /\* %6 *\/ "i" (sizeof(int) * THREAD_JB_WIM),                                                     \ */
+/*     /\* %7 *\/ "i" (-SF_REGS_SZ),                                                                     \ */
+/*     /\* %8 *\/ "r" (env) );                                                                       */
+
+  /* never come here */
+}