+/* -----------------------------------------------------------------------------
+ PowerPC architecture
+
+ Everything is in assembler, so we don't have to deal with GCC...
+
+ -------------------------------------------------------------------------- */
+
+#ifdef powerpc_TARGET_ARCH
+
+extern StgThreadReturnCode StgRun(StgFunPtr f, StgRegTable *basereg);
+
+static void StgRunIsImplementedInAssembler(void)
+{
+ __asm__ volatile (
+ "\n.globl _StgRun\n"
+ "_StgRun:\n"
+ "\tmflr r0\n"
+ "\tbl saveFP # f14\n"
+ "\tstmw r13,-220(r1)\n"
+ "\tstwu r1,-%0(r1)\n"
+ "\tmtctr r3\n"
+ "\tmr r12,r3\n"
+ "\tbctr\n"
+ ".globl _StgReturn\n"
+ "_StgReturn:\n"
+ "\tmr r3,r14\n"
+ "\tla r1,%0(r1)\n"
+ "\tlmw r13,-220(r1)\n"
+ "\tb restFP # f14\n"
+ : : "i"(RESERVED_C_STACK_BYTES+288 /*stack frame size*/));
+}
+
+#endif
+
+/* -----------------------------------------------------------------------------
+ IA64 architecture
+
+ Again, in assembler - so we can fiddle with the register stack, and because
+ gcc doesn't handle asm-clobbered callee-saves correctly.
+
+ loc0 - loc15: preserved locals
+ loc16 - loc28: STG registers
+ loc29: saved ar.pfs
+ loc30: saved b0
+ -------------------------------------------------------------------------- */
+
+#ifdef ia64_TARGET_ARCH
+
+/* the memory stack is rarely used, so 16K is excessive */
+#undef RESERVED_C_STACK_BYTES
+#define RESERVED_C_STACK_BYTES 1024
+
+static void StgRunIsImplementedInAssembler(void)
+{
+ __asm__ volatile(
+ ".global StgRun\n"
+ "StgRun:\n"
+ "\talloc loc29 = ar.pfs, 0, 31, 8, 0\n" /* setup register frame */
+ "\tld8 r18 = [r32],8\n" /* get procedure address */
+ "\tadds sp = -%0, sp ;;\n" /* setup stack */
+ "\tld8 gp = [r32]\n" /* get procedure GP */
+ "\tadds r16 = %0-(6*16), sp\n"
+ "\tadds r17 = %0-(5*16), sp ;;\n"
+ "\tstf.spill [r16] = f16,32\n" /* spill callee-saved fp regs */
+ "\tstf.spill [r17] = f17,32\n"
+ "\tmov b6 = r18 ;;\n" /* set target address */
+ "\tstf.spill [r16] = f18,32\n"
+ "\tstf.spill [r17] = f19,32\n"
+ "\tmov loc30 = b0 ;;\n" /* save return address */
+ "\tstf.spill [r16] = f20,32\n"
+ "\tstf.spill [r17] = f21,32\n"
+ "\tbr.few b6 ;;\n" /* branch to function */
+ ".global StgReturn\n"
+ "StgReturn:\n"
+ "\tmov r8 = loc16\n" /* return value in r8 */
+ "\tadds r16 = %0-(6*16), sp\n"
+ "\tadds r17 = %0-(5*16), sp ;;\n"
+ "\tldf.fill f16 = [r16],32\n" /* start restoring fp regs */
+ "\tldf.fill f17 = [r17],32\n"
+ "\tmov ar.pfs = loc29 ;;\n" /* restore register frame */
+ "\tldf.fill f18 = [r16],32\n"
+ "\tldf.fill f19 = [r17],32\n"
+ "\tmov b0 = loc30 ;;\n" /* restore return address */
+ "\tldf.fill f20 = [r16],32\n"
+ "\tldf.fill f21 = [r17],32\n"
+ "\tadds sp = %0, sp\n" /* restore stack */
+ "\tbr.ret.sptk.many b0 ;;\n" /* return */
+ : : "i"(RESERVED_C_STACK_BYTES + 6*16));
+}
+
+#endif
+