#ifndef FIRM_BE_MAIN_H
#define FIRM_BE_MAIN_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
#include <stdio.h>
#include "irarch.h"
#include "archop.h"
#include "lowering.h"
+typedef enum {
+ ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER = 0x0001,
+ ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP = 0x0002,
+ ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE = 0x0004,
+ ASM_CONSTRAINT_FLAG_NO_SUPPORT = 0x0008,
+ ASM_CONSTRAINT_FLAG_MODIFIER_WRITE = 0x0010,
+ ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE = 0x0020,
+ ASM_CONSTRAINT_FLAG_MODIFIER_READ = 0x0040,
+ ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ = 0x0080,
+ ASM_CONSTRAINT_FLAG_MODIFIER_EARLYCLOBBER = 0x0100,
+ ASM_CONSTRAINT_FLAG_MODIFIER_COMMUTATIVE = 0x0200,
+ ASM_CONSTRAINT_FLAG_INVALID = 0x8000
+} asm_constraint_flags_t;
+
/**
* This structure contains parameters that should be
* propagated to the libFirm parameter set.
*/
typedef struct backend_params {
- /** if set, the backend cannot handle DWORD access */
+ /** If set, the backend cannot handle DWORD access. */
unsigned do_dw_lowering:1;
- /** if set, the backend supports inline assembly */
+ /** If set, the backend supports inline assembly. */
unsigned support_inline_asm:1;
+ /** If set, the target architecture use an immediate floating point mode. */
+ unsigned has_imm_fp_mode:1;
/** Additional opcodes settings. */
const arch_ops_info *arch_op_settings;
- /** Settings for architecture dependent optimizations */
+ /** Settings for architecture dependent optimizations. */
const ir_settings_arch_dep_t *dep_param;
- /** the architecture specific intrinsic function creator */
+ /** The architecture specific intrinsic function creator. */
create_intrinsic_fkt *arch_create_intrinsic_fkt;
- /** the context parameter for the create intrinsic function */
+ /** The context parameter for the create intrinsic function. */
void *create_intrinsic_ctx;
- /** backend settings for if-conversion */
+ /** Backend settings for if-conversion. */
const ir_settings_if_conv_t *if_conv_info;
+
+ /** The immediate floating point mode. Temporaries are calculated using
+ * this mode. */
+ ir_mode *imm_fp_mode;
} backend_params;
/**
int be_parse_arg(const char *arg);
/**
- * Initialize the Firm backend. Must be run BEFORE init_firm()!
+ * Return the backend configuration parameter.
*
* @return libFirm configuration parameters for the selected
* backend
*/
-const backend_params *be_init(void);
+const backend_params *be_get_backend_param(void);
/**
* Main interface to the frontend.
*/
void be_main(FILE *output, const char *compilation_unit_name);
+/**
+ * parse assembler constraint strings and returns flags (so the frontend knows
+ * which operands are inputs/outputs and whether memory is required)
+ */
+asm_constraint_flags_t be_parse_asm_constraints(const char *constraints);
+
+/**
+ * tests whether a string is a valid clobber in an ASM instruction
+ */
+int be_is_valid_clobber(const char *clobber);
+
typedef struct be_main_env_t be_main_env_t;
typedef struct be_options_t be_options_t;
+#ifdef __cplusplus
+}
+#endif
+
#endif