X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Frts%2FStgCRun.c;h=b1d8b5a17018820c2924f067d231b7240bec5c62;hb=423d477bfecd490de1449c59325c8776f91d7aac;hp=f88f28ee8923f4421c887ea6ec97f98494c2420c;hpb=0bffc410964e1688ad80d277d53400659e697ab5;p=ghc-hetmet.git diff --git a/ghc/rts/StgCRun.c b/ghc/rts/StgCRun.c index f88f28e..b1d8b5a 100644 --- a/ghc/rts/StgCRun.c +++ b/ghc/rts/StgCRun.c @@ -1,7 +1,7 @@ /* ----------------------------------------------------------------------------- - * $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. * @@ -50,7 +50,7 @@ * 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__("$26"); @@ -68,9 +68,10 @@ register double fake_f9 __asm__("$f9"); #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 @@ -81,22 +82,22 @@ register double fake_f9 __asm__("$f9"); 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 */ @@ -164,6 +165,71 @@ StgRun(StgFunPtr f, StgRegTable *basereg) { #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 @@ -465,6 +531,7 @@ StgRun(StgFunPtr f, StgRegTable *basereg) extern StgThreadReturnCode StgRun(StgFunPtr f, StgRegTable *basereg); +#ifdef darwin_TARGET_OS static void StgRunIsImplementedInAssembler(void) { __asm__ volatile ( @@ -472,19 +539,96 @@ static void StgRunIsImplementedInAssembler(void) "_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 @@ -498,6 +642,7 @@ static void StgRunIsImplementedInAssembler(void) loc16 - loc28: STG registers loc29: saved ar.pfs loc30: saved b0 + loc31: saved gp (gcc 3.3 uses this slot) -------------------------------------------------------------------------- */ #ifdef ia64_TARGET_ARCH @@ -506,12 +651,19 @@ static void StgRunIsImplementedInAssembler(void) #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 */ @@ -541,7 +693,7 @@ static void StgRunIsImplementedInAssembler(void) "\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