Commit 7e705a79 authored by Michael Beck's avatar Michael Beck
Browse files

fixed fastcall and added function to set the number of register arguments

[r7122]
parent 9cf68ba5
......@@ -1345,6 +1345,18 @@ void (set_method_calling_convention)(type *method, unsigned cc_mask) {
_set_method_calling_convention(method, cc_mask);
}
/* Returns the number of register parameters in a fastcall. 0 means default. */
unsigned get_method_fastcall_n_regs(type *method) {
assert(IS_FASTCALL(get_method_calling_convention(method)) && "not fastcall");
return method->attr.ma.irg_calling_conv >> 8;
}
/* Sets the number of register parameters in a fastcall. 0 means default. */
void set_method_fastcall_n_regs(type *method, unsigned n_regs) {
assert(IS_FASTCALL(get_method_calling_convention(method)) && "not fastcall");
method->attr.ma.irg_calling_conv = n_regs << 8 | (method->attr.ma.irg_calling_conv & 0xFF);
}
/* typecheck */
int (is_Method_type)(const type *method) {
return _is_method_type(method);
......
......@@ -799,19 +799,25 @@ void set_method_additional_properties(type *method, unsigned property_mask);
void set_method_additional_property(type *method, mtp_additional_property flag);
/**
* calling conventions
* calling conventions: the lower 8 bits are flags, the upper 24
* are the number of arguments transmitted in registers.
*/
typedef enum {
cc_reg_param = 0x00000001, /**< Transmit parameters in registers, else the stack is used.
This flag may be set as default on some architectures. */
This flag may be set as default on some architectures. */
cc_last_on_top = 0x00000002, /**< The last non-register parameter is transmitted on top of
the stack. This is equivalent to the stdcall or pascal
calling convention. If this flag is not set, the first
non-register parameter is used (cdecl calling convention) */
the stack. If this flag is not set, the first
non-register parameter is used (cdecl/stdcall convention) */
cc_callee_clear_stk = 0x00000004, /**< The callee clears the stack. This forbids variadic
function calls (stdcall). */
cc_this_call = 0x00000008 /**< The first parameter is a this pointer and is transmitted
in a special way. */
function calls (stdcall). */
cc_this_call = 0x00000008, /**< The first parameter is a this pointer and is transmitted
in a special way. */
/* for easier access */
cc_cdecl_set = 0, /**< cdecl calling convention */
cc_stdcall_set = cc_callee_clear_stk, /**< stdcall calling convention */
cc_fastcall_set = cc_reg_param|cc_callee_clear_stk, /**< fastcall calling convention */
cc_defmask = cc_reg_param|cc_last_on_top|cc_callee_clear_stk
} calling_convention;
/** return the default calling convention for method types */
......@@ -820,22 +826,32 @@ unsigned get_default_cc_mask(void);
/**
* check for the CDECL calling convention
*/
#define IS_CDECL(cc_mask) (((cc_mask) & (cc_callee_clear_stk|cc_last_on_top)) == 0)
#define IS_CDECL(cc_mask) (((cc_mask) & cc_defmask) == cc_cdecl_set)
/**
* check for the STDCALL calling convention
*/
#define IS_STDCALL(cc_mask) (((cc_mask) & (cc_callee_clear_stk|cc_last_on_top)) == cc_callee_clear_stk)
#define IS_STDCALL(cc_mask) (((cc_mask) & cc_defmask) == cc_stdcall_set)
/**
* check for the FASTCALL calling convention
*/
#define IS_FASTCALL(cc_mask) (((cc_mask) & cc_defmask) == cc_fastcall_set)
/**
* add the CDECL convention bits
*/
#define SET_CDECL(cc_mask) ((cc_mask) & ~(cc_callee_clear_stk|cc_last_on_top))
#define SET_CDECL(cc_mask) (((cc_mask) & ~cc_defmask) | cc_cdecl_set)
/**
* add the STDCALL convention bits
*/
#define SET_STDCALL(cc_mask) (((cc_mask) & ~cc_last_on_top) | cc_callee_clear_stk)
#define SET_STDCALL(cc_mask) (((cc_mask) & ~cc_defmask) | cc_stdcall_set)
/**
* add the FASTCALL convention bits
*/
#define SET_FASTCALL(cc_mask) (((cc_mask) & ~cc_defmask) | cc_fastcall_set)
/** Returns the calling convention of an entities graph. */
unsigned get_method_calling_convention(const type *method);
......@@ -843,6 +859,12 @@ unsigned get_method_calling_convention(const type *method);
/** Sets the calling convention of an entities graph. */
void set_method_calling_convention(type *method, unsigned cc_mask);
/** Returns the number of register parameters in a fastcall. 0 means default. */
unsigned get_method_fastcall_n_regs(type *method);
/** Sets the number of register parameters in a fastcall. 0 means default. */
void set_method_fastcall_n_regs(type *method, unsigned n_regs);
/** Returns true if a type is a method type. */
int is_Method_type (const type *method);
......
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