/* -----------------------------------------------------------------------------
- * $Id: StgCRun.c,v 1.37 2002/12/11 15:36:51 simonmar Exp $
+ * $Id: StgCRun.c,v 1.42 2004/08/13 13:10:46 simonmar Exp $
*
- * (c) The GHC Team, 1998-2000
+ * (c) The GHC Team, 1998-2003
*
* STG-to-C glue.
*
* that we don't use but which are callee-save registers. The __divq() routine
* in libc.a clobbers $s6.
*/
-#include "config.h"
+#include "ghcconfig.h"
#ifdef alpha_TARGET_ARCH
#define alpha_EXTRA_CAREFUL
register long fake_ra __asm__("$26");
#include "Stg.h"
#include "Rts.h"
#include "StgRun.h"
+#include "RtsFlags.h"
+#include "Capability.h"
#ifdef DEBUG
-#include "RtsFlags.h"
#include "RtsUtils.h"
#include "Printer.h"
#endif
any architecture (using miniinterpreter)
-------------------------------------------------------------------------- */
-extern StgThreadReturnCode StgRun(StgFunPtr f, StgRegTable *basereg STG_UNUSED)
+StgThreadReturnCode StgRun(StgFunPtr f, StgRegTable *basereg STG_UNUSED)
{
- while (f) {
- IF_DEBUG(interpreter,
- fprintf(stderr,"Jumping to ");
- printPtr((P_)f); fflush(stdout);
- fprintf(stderr,"\n");
- );
- f = (StgFunPtr) (f)();
- }
- return (StgThreadReturnCode)R1.i;
+ while (f) {
+ if (RtsFlags[0].DebugFlags.interpreter) {
+ fprintf(stderr,"Jumping to ");
+ printPtr((P_)f); fflush(stdout);
+ fprintf(stderr,"\n");
+ }
+ f = (StgFunPtr) (f)();
+ }
+ return (StgThreadReturnCode)R1.i;
}
-EXTFUN(StgReturn)
+StgFunPtr StgReturn(void)
{
- return 0;
+ return 0;
}
#else /* !USE_MINIINTERPRETER */
#endif
+/* ----------------------------------------------------------------------------
+ x86-64 is almost the same as plain x86.
+
+ I've done it using entirely inline assembler, because I couldn't
+ get gcc to generate the correct subtraction from %rsp by using
+ the local array variable trick. It didn't seem to reserve
+ enough space. Oh well, it's not much harder this way.
+
+ ------------------------------------------------------------------------- */
+
+#ifdef x86_64_TARGET_ARCH
+
+extern StgThreadReturnCode StgRun(StgFunPtr f, StgRegTable *basereg);
+
+static void StgRunIsImplementedInAssembler(void)
+{
+ __asm__ volatile (
+ /*
+ * save callee-saves registers on behalf of the STG code.
+ */
+ ".globl StgRun\n"
+ "StgRun:\n\t"
+ "subq %0, %%rsp\n\t"
+ "movq %%rsp, %%rax\n\t"
+ "addq %0-48, %%rax\n\t"
+ "movq %%rbx,0(%%rax)\n\t"
+ "movq %%rbp,8(%%rax)\n\t"
+ "movq %%r12,16(%%rax)\n\t"
+ "movq %%r13,24(%%rax)\n\t"
+ "movq %%r14,32(%%rax)\n\t"
+ "movq %%r15,40(%%rax)\n\t"
+ /*
+ * Set BaseReg
+ */
+ "movq %%rsi,%%rbx\n\t"
+ /*
+ * grab the function argument from the stack, and jump to it.
+ */
+ "movq %%rdi,%%rax\n\t"
+ "jmp *%%rax\n\t"
+
+ ".global " STG_RETURN "\n"
+ STG_RETURN ":\n\t"
+
+ "movq %%r13, %%rax\n\t" /* Return value in R1 */
+
+ /*
+ * restore callee-saves registers. (Don't stomp on %%rax!)
+ */
+ "movq %%rsp, %%rdx\n\t"
+ "addq %0-48, %%rdx\n\t"
+ "movq 0(%%rdx),%%rbx\n\t" /* restore the registers saved above */
+ "movq 8(%%rdx),%%rbp\n\t"
+ "movq 16(%%rdx),%%r12\n\t"
+ "movq 24(%%rdx),%%r13\n\t"
+ "movq 32(%%rdx),%%r14\n\t"
+ "movq 40(%%rdx),%%r15\n\t"
+ "addq %0, %%rsp\n\t"
+ "retq"
+
+ : : "i"(RESERVED_C_STACK_BYTES+48 /*stack frame size*/));
+}
+
+#endif /* x86-64 */
+
/* -----------------------------------------------------------------------------
Sparc architecture
extern StgThreadReturnCode StgRun(StgFunPtr f, StgRegTable *basereg);
+#ifdef darwin_TARGET_OS
static void StgRunIsImplementedInAssembler(void)
{
__asm__ volatile (
"_StgRun:\n"
"\tmflr r0\n"
"\tbl saveFP # f14\n"
- "\tstmw r14,-216(r1)\n"
- "\tstwu r1,-8480(r1)\n"
+ "\tstmw r13,-220(r1)\n"
+ "\tstwu r1,-%0(r1)\n"
+ "\tmr r27,r4\n" // BaseReg == r27
"\tmtctr r3\n"
"\tmr r12,r3\n"
"\tbctr\n"
".globl _StgReturn\n"
"_StgReturn:\n"
"\tmr r3,r14\n"
- "\tla r1,8480(r1)\n"
- "\tlmw r14,-216(r1)\n"
+ "\tla r1,%0(r1)\n"
+ "\tlmw r13,-220(r1)\n"
"\tb restFP # f14\n"
- ); /* RESERVED_C_STACK_BYTES + stack frame size == 8192 + 288 == 8480 */
+ : : "i"(RESERVED_C_STACK_BYTES+288 /*stack frame size*/));
}
+#else
+
+// This version is for PowerPC Linux.
+
+// Differences from the Darwin/Mac OS X version:
+// *) Different Assembler Syntax
+// *) Doesn't use Register Saving Helper Functions (although they exist somewhere)
+// *) We may not access positive stack offsets
+// (no "Red Zone" as in the Darwin ABI)
+// *) The Link Register is saved to a different offset in the caller's stack frame
+// (Linux: 4(r1), Darwin 8(r1))
+
+static void StgRunIsImplementedInAssembler(void)
+{
+ __asm__ volatile (
+ "\t.globl StgRun\n"
+ "\t.type StgRun,@function\n"
+ "StgRun:\n"
+ "\tmflr 0\n"
+ "\tstw 0,4(1)\n"
+ "\tmr 5,1\n"
+ "\tstwu 1,-%0(1)\n"
+ "\tstmw 13,-220(5)\n"
+ "\tstfd 14,-144(5)\n"
+ "\tstfd 15,-136(5)\n"
+ "\tstfd 16,-128(5)\n"
+ "\tstfd 17,-120(5)\n"
+ "\tstfd 18,-112(5)\n"
+ "\tstfd 19,-104(5)\n"
+ "\tstfd 20,-96(5)\n"
+ "\tstfd 21,-88(5)\n"
+ "\tstfd 22,-80(5)\n"
+ "\tstfd 23,-72(5)\n"
+ "\tstfd 24,-64(5)\n"
+ "\tstfd 25,-56(5)\n"
+ "\tstfd 26,-48(5)\n"
+ "\tstfd 27,-40(5)\n"
+ "\tstfd 28,-32(5)\n"
+ "\tstfd 29,-24(5)\n"
+ "\tstfd 30,-16(5)\n"
+ "\tstfd 31,-8(5)\n"
+ "\tmr 27,4\n" // BaseReg == r27
+ "\tmtctr 3\n"
+ "\tmr 12,3\n"
+ "\tbctr\n"
+ ".globl StgReturn\n"
+ "\t.type StgReturn,@function\n"
+ "StgReturn:\n"
+ "\tmr 3,14\n"
+ "\tla 5,%0(1)\n"
+ "\tlmw 13,-220(5)\n"
+ "\tlfd 14,-144(5)\n"
+ "\tlfd 15,-136(5)\n"
+ "\tlfd 16,-128(5)\n"
+ "\tlfd 17,-120(5)\n"
+ "\tlfd 18,-112(5)\n"
+ "\tlfd 19,-104(5)\n"
+ "\tlfd 20,-96(5)\n"
+ "\tlfd 21,-88(5)\n"
+ "\tlfd 22,-80(5)\n"
+ "\tlfd 23,-72(5)\n"
+ "\tlfd 24,-64(5)\n"
+ "\tlfd 25,-56(5)\n"
+ "\tlfd 26,-48(5)\n"
+ "\tlfd 27,-40(5)\n"
+ "\tlfd 28,-32(5)\n"
+ "\tlfd 29,-24(5)\n"
+ "\tlfd 30,-16(5)\n"
+ "\tlfd 31,-8(5)\n"
+ "\tmr 1,5\n"
+ "\tlwz 0,4(1)\n"
+ "\tmtlr 0\n"
+ "\tblr\n"
+ : : "i"(RESERVED_C_STACK_BYTES+288 /*stack frame size*/));
+}
+#endif
#endif
loc16 - loc28: STG registers
loc29: saved ar.pfs
loc30: saved b0
+ loc31: saved gp (gcc 3.3 uses this slot)
-------------------------------------------------------------------------- */
#ifdef ia64_TARGET_ARCH
#undef RESERVED_C_STACK_BYTES
#define RESERVED_C_STACK_BYTES 1024
+#if ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3)
+/* gcc 3.3+: leave an extra slot for gp saves */
+#define LOCALS 32
+#else
+#define LOCALS 31
+#endif
+
static void StgRunIsImplementedInAssembler(void)
{
__asm__ volatile(
".global StgRun\n"
"StgRun:\n"
- "\talloc loc29 = ar.pfs, 0, 31, 8, 0\n" /* setup register frame */
+ "\talloc loc29 = ar.pfs, 0, %1, 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 */
"\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));
+ : : "i"(RESERVED_C_STACK_BYTES + 6*16), "i"(LOCALS));
}
#endif
projects / ghc-hetmet.git / blobdiff