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Applied a modified version of holger's regparm patches.

tags/v0.9.3
Michael Brown 17 lat temu
rodzic
commit
a6a1052096

+ 12
- 0
src/arch/i386/Config Wyświetl plik

@@ -130,6 +130,18 @@ endif
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 # this is almost always a win. the kernel uses it, too.
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 CFLAGS+= -mpreferred-stack-boundary=2
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+# use regparm for all functions - C functions called from assembly (or
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+# vice versa) need __cdecl now
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+CFLAGS+= -mregparm=3
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+
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+# use -mrtd (same __cdecl requirements as above)
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+CFLAGS+= -mrtd
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+
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+# this is the logical complement to -mregparm=3. 
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+# it doesn't currently buy us anything, but if anything ever tries
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+# to return small structures, let's be prepared
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+CFLAGS+= -freg-struct-return
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+
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 LDFLAGS+=	-N --no-check-sections
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 ifeq "$(shell uname -s)" "FreeBSD"

+ 1
- 1
src/arch/i386/core/relocate.c Wyświetl plik

@@ -39,7 +39,7 @@ extern char _end[];
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  * address space, and returns the physical address of the new location
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  * to the prefix in %edi.
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  */
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-void relocate ( struct i386_all_regs *ix86 ) {
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+__cdecl void relocate ( struct i386_all_regs *ix86 ) {
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 	struct memory_map memmap;
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 	unsigned long start, end, size, padded_size;
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 	unsigned long new_start, new_end;

+ 1
- 1
src/arch/i386/interface/pcbios/int13.c Wyświetl plik

@@ -321,7 +321,7 @@ static int int13_get_extended_parameters ( struct int13_drive *drive,
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  * INT 13 handler
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  *
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  */
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-static void int13 ( struct i386_all_regs *ix86 ) {
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+static __cdecl void int13 ( struct i386_all_regs *ix86 ) {
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 	int command = ix86->regs.ah;
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 	unsigned int bios_drive = ix86->regs.dl;
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 	unsigned int original_bios_drive = bios_drive;

+ 2
- 2
src/arch/i386/interface/pxe/pxe_call.c Wyświetl plik

@@ -112,7 +112,7 @@ static PXENV_EXIT_t pxenv_unknown ( struct s_PXENV_UNKNOWN *pxenv_unknown ) {
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  * @v es:di		Address of PXE parameter block
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  * @ret ax		PXE exit code
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  */
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-void pxe_api_call ( struct i386_all_regs *ix86 ) {
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+__cdecl void pxe_api_call ( struct i386_all_regs *ix86 ) {
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 	int opcode = ix86->regs.bx;
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 	userptr_t parameters = real_to_user ( ix86->segs.es, ix86->regs.di );
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 	size_t param_len;
@@ -304,7 +304,7 @@ void pxe_api_call ( struct i386_all_regs *ix86 ) {
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  * @v es:di		Address of PXE parameter block
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  * @ret ax		PXE exit code
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  */
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-void pxe_loader_call ( struct i386_all_regs *ix86 ) {
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+__cdecl void pxe_loader_call ( struct i386_all_regs *ix86 ) {
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 	userptr_t uparams = real_to_user ( ix86->segs.es, ix86->regs.di );
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 	struct s_UNDI_LOADER params;
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 	PXENV_EXIT_t ret;

+ 1
- 1
src/core/main.c Wyświetl plik

@@ -24,7 +24,7 @@ Literature dealing with the network protocols:
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  *
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  * @ret rc		Return status code
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  */
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-int main ( void ) {
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+__cdecl int main ( void ) {
28 28
 
29 29
 	initialise();
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 	startup();

+ 3
- 0
src/include/compiler.h Wyświetl plik

@@ -276,6 +276,9 @@ extern void dbg_hex_dump_da ( unsigned long dispaddr,
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 /** Declare a variable or data structure as unused. */
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 #define __unused __attribute__ (( unused ))
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+/** Apply standard C calling conventions */
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+#define __cdecl __attribute__ (( cdecl , regparm(0) ))
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+
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 /**
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  * Declare a function as used.
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  *

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