Added soft float support for SPARC backend.

diff --git a/ir/be/sparc/bearch_sparc.c b/ir/be/sparc/bearch_sparc.c
index d476b90..3a4a755 100644 (file)
--- a/ir/be/sparc/bearch_sparc.c
+++ b/ir/be/sparc/bearch_sparc.c
@@ -40,6 +40,7 @@
 #include "lowering.h"
 #include "lower_dw.h"
 #include "lower_calls.h"
+#include "lower_softfloat.h"
 
 #include "bitset.h"
 #include "debug.h"
@@ -185,7 +186,8 @@ static sparc_isa_t sparc_isa_template = {
                5,                                  /* costs for a reload instruction */
                true,                               /* custom abi handling */
        },
-       NULL,     /* constants */
+       NULL,               /* constants */
+       SPARC_FPU_ARCH_FPU, /* FPU architecture */
 };
 
 /**
@@ -415,6 +417,9 @@ static void sparc_lower_for_target(void)
        };
        lower_calls_with_compounds(LF_RETURN_HIDDEN);
 
+       if (sparc_isa_template.fpu_arch == SPARC_FPU_ARCH_SOFTFLOAT)
+               lower_floating_point();
+
        sparc_lower_64bit();
 
        for (i = 0; i < n_irgs; ++i) {
@@ -515,6 +520,22 @@ static int sparc_is_valid_clobber(const char *clobber)
        return 0;
 }
 
+/* fpu set architectures. */
+static const lc_opt_enum_int_items_t sparc_fpu_items[] = {
+       { "fpu",       SPARC_FPU_ARCH_FPU },
+       { "softfloat", SPARC_FPU_ARCH_SOFTFLOAT },
+       { NULL,        0 }
+};
+
+static lc_opt_enum_int_var_t arch_fpu_var = {
+       &sparc_isa_template.fpu_arch, sparc_fpu_items
+};
+
+static const lc_opt_table_entry_t sparc_options[] = {
+       LC_OPT_ENT_ENUM_INT("fpunit", "select the floating point unit", &arch_fpu_var),
+       LC_OPT_LAST
+};
+
 const arch_isa_if_t sparc_isa_if = {
        sparc_init,
        sparc_lower_for_target,
@@ -542,6 +563,11 @@ const arch_isa_if_t sparc_isa_if = {
 BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_sparc)
 void be_init_arch_sparc(void)
 {
+       lc_opt_entry_t *be_grp = lc_opt_get_grp(firm_opt_get_root(), "be");
+       lc_opt_entry_t *sparc_grp = lc_opt_get_grp(be_grp, "sparc");
+
+       lc_opt_add_table(sparc_grp, sparc_options);
+
        be_register_isa_if("sparc", &sparc_isa_if);
        FIRM_DBG_REGISTER(dbg, "firm.be.sparc.cg");
        sparc_init_transform();

diff --git a/ir/be/sparc/bearch_sparc_t.h b/ir/be/sparc/bearch_sparc_t.h
index da5e07e..4df7b50 100644 (file)
--- a/ir/be/sparc/bearch_sparc_t.h
+++ b/ir/be/sparc/bearch_sparc_t.h
@@ -34,9 +34,17 @@ typedef struct sparc_transform_env_t  sparc_transform_env_t;
 typedef struct sparc_isa_t            sparc_isa_t;
 typedef struct calling_convention_t   calling_convention_t;
 
+/** Floating point instruction set. */
+enum sparc_fp_architectures {
+       SPARC_FPU_ARCH_NONE      = 0,
+       SPARC_FPU_ARCH_FPU       = 0x00000001,
+       SPARC_FPU_ARCH_SOFTFLOAT = 0x00000002,
+};
+
 struct sparc_isa_t {
        arch_env_t  base;      /**< must be derived from arch_env_t */
-    pmap       *constants;
+       pmap       *constants;
+       int         fpu_arch;  /**< FPU architecture */
 };
 
 /**