X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fia32%2Fia32_map_regs.c;h=49110979b11f8bab8e98520d74523e4692bdbd6f;hb=0f4eb60a2e04ea5205276589b8f43171816965be;hp=051321fd3fdd94fef92d5165b305c4e698cebbfc;hpb=5416b9ba504458151bbcf513b914cc48cebbbded;p=libfirm diff --git a/ir/be/ia32/ia32_map_regs.c b/ir/be/ia32/ia32_map_regs.c index 051321fd3..49110979b 100644 --- a/ir/be/ia32/ia32_map_regs.c +++ b/ir/be/ia32/ia32_map_regs.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved. + * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved. * * This file is part of libFirm. * @@ -23,56 +23,43 @@ * @author Christian Wuerdig * @version $Id$ */ -#ifdef HAVE_CONFIG_H #include "config.h" -#endif #include #include "pmap.h" +#include "error.h" #include "ia32_map_regs.h" #include "ia32_new_nodes.h" +#include "ia32_architecture.h" #include "gen_ia32_regalloc_if.h" #include "bearch_ia32_t.h" -#include "../benodesets.h" -static int maxnum_gpreg_args = 3; /* maximum number of int arguments passed in registers; default 3 */ -static int maxnum_sse_args = 5; /* maximum number of float arguments passed in registers; default 5 */ +#define MAXNUM_GPREG_ARGS 3 +#define MAXNUM_SSE_ARGS 8 -/* this is the order of the assigned registers usesd for parameter passing */ +/* this is the order of the assigned registers used for parameter passing */ -const arch_register_t *gpreg_param_reg_std[] = { - &ia32_gp_regs[REG_EAX], - &ia32_gp_regs[REG_EDX], +static const arch_register_t *gpreg_param_reg_fastcall[] = { &ia32_gp_regs[REG_ECX], - &ia32_gp_regs[REG_EBX], - &ia32_gp_regs[REG_EDI], - &ia32_gp_regs[REG_ESI] + &ia32_gp_regs[REG_EDX], + NULL }; -const arch_register_t *gpreg_param_reg_this[] = { - &ia32_gp_regs[REG_ECX], +static const arch_register_t *gpreg_param_reg_regparam[] = { &ia32_gp_regs[REG_EAX], &ia32_gp_regs[REG_EDX], - &ia32_gp_regs[REG_EBX], - &ia32_gp_regs[REG_EDI], - &ia32_gp_regs[REG_ESI] + &ia32_gp_regs[REG_ECX] }; -const arch_register_t *fpreg_sse_param_reg_std[] = { - &ia32_xmm_regs[REG_XMM0], - &ia32_xmm_regs[REG_XMM1], - &ia32_xmm_regs[REG_XMM2], - &ia32_xmm_regs[REG_XMM3], - &ia32_xmm_regs[REG_XMM4], - &ia32_xmm_regs[REG_XMM5], - &ia32_xmm_regs[REG_XMM6], - &ia32_xmm_regs[REG_XMM7] +static const arch_register_t *gpreg_param_reg_this[] = { + &ia32_gp_regs[REG_ECX], + NULL, + NULL }; -const arch_register_t *fpreg_sse_param_reg_this[] = { - NULL, /* in case of a "this" pointer, the first parameter must not be a float */ +static const arch_register_t *fpreg_sse_param_reg_std[] = { &ia32_xmm_regs[REG_XMM0], &ia32_xmm_regs[REG_XMM1], &ia32_xmm_regs[REG_XMM2], @@ -83,6 +70,9 @@ const arch_register_t *fpreg_sse_param_reg_this[] = { &ia32_xmm_regs[REG_XMM7] }; +static const arch_register_t *fpreg_sse_param_reg_this[] = { + NULL, /* in case of a "this" pointer, the first parameter must not be a float */ +}; /* Mapping to store registers in firm nodes */ @@ -95,6 +85,7 @@ struct ia32_irn_reg_assoc { int ia32_cmp_irn_reg_assoc(const void *a, const void *b, size_t len) { const struct ia32_irn_reg_assoc *x = a; const struct ia32_irn_reg_assoc *y = b; + (void) len; return x->irn != y->irn; } @@ -105,7 +96,7 @@ static struct ia32_irn_reg_assoc *get_irn_reg_assoc(const ir_node *irn, set *reg templ.irn = irn; templ.reg = NULL; - hash = nodeset_hash(irn); + hash = hash_irn(irn); return set_insert(reg_set, &templ, sizeof(templ), hash); } @@ -158,78 +149,45 @@ const char *ia32_get_mapped_reg_name(pmap *reg_map, const arch_register_t *reg) } /** - * Check all parameters and determine the maximum number of parameters - * to pass in gp regs resp. in fp regs. - * - * @param n The number of parameters - * @param modes The list of the parameter modes - * @param n_int Holds the number of int parameters to be passed in regs after the call - * @param n_float Holds the number of float parameters to be passed in regs after the call - * @return The number of the last parameter to be passed in register + * Returns the register for parameter nr. */ -int ia32_get_n_regparam_class(ia32_code_gen_t *cg, int n, ir_mode **modes, - int *n_int, int *n_float) +const arch_register_t *ia32_get_RegParam_reg(unsigned cc, size_t nr, + const ir_mode *mode) { - int i, finished = 0; - int max_fp_regs; - - if(USE_SSE2(cg)) { - max_fp_regs = maxnum_sse_args; - } else { - max_fp_regs = 0; - } + if (! (cc & cc_reg_param)) + return NULL; - *n_int = 0; - *n_float = 0; - - for (i = 0; i < n && !finished; i++) { - if (mode_is_int(modes[i]) || mode_is_reference(modes[i])) { - *n_int = *n_int + 1; - } - else if (mode_is_float(modes[i])) { - *n_float = *n_float + 1; - } - else { - finished = 1; - } + if (mode_is_float(mode)) { + if (!ia32_cg_config.use_sse2 || (cc & cc_fpreg_param) == 0) + return NULL; + if (nr >= MAXNUM_SSE_ARGS) + return NULL; - /* test for maximum */ - if (*n_int == maxnum_gpreg_args || *n_float == max_fp_regs) { - finished = 1; + if (cc & cc_this_call) { + return fpreg_sse_param_reg_this[nr]; } - } - - return i - 1; -} + return fpreg_sse_param_reg_std[nr]; + } else if (mode_is_int(mode) || mode_is_reference(mode)) { + unsigned num_regparam; + if (get_mode_size_bits(mode) > 32) + return NULL; -/** - * Returns the register for parameter nr. - * - * @param n The number of parameters - * @param modes The list of the parameter modes - * @param nr The number of the parameter to return the requirements for - * @param cc The calling convention - * @return The register - */ -const arch_register_t *ia32_get_RegParam_reg(ia32_code_gen_t *cg, unsigned cc, - unsigned nr, ir_mode *mode) -{ - if(mode_is_float(mode)) { - if(!USE_SSE2(cg)) + if (nr >= MAXNUM_GPREG_ARGS) return NULL; - assert(nr < maxnum_sse_args); - if(cc & cc_this_call) { - return fpreg_sse_param_reg_this[nr]; + + if (cc & cc_this_call) { + return gpreg_param_reg_this[nr]; } - return fpreg_sse_param_reg_std[nr]; + num_regparam = cc & ~cc_bits; + if (num_regparam == 0) { + /* default fastcall */ + return gpreg_param_reg_fastcall[nr]; + } + if (nr < num_regparam) + return gpreg_param_reg_regparam[nr]; + return NULL; } - assert(mode_is_int(mode) || mode_is_reference(mode)); - - if(cc & cc_this_call) { - assert(nr < maxnum_gpreg_args); - return gpreg_param_reg_this[nr]; - } - return gpreg_param_reg_std[nr]; + panic("unknown argument mode"); }