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(Joypad drivers) Cleanup dos_joypad.c

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This commit is contained in:
libretroadmin 2023-02-20 10:18:48 +01:00
parent 6f26f37cec
commit 93de4f3c4f
1 changed files with 43 additions and 59 deletions
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102
input/drivers_joypad/dos_joypad.c
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@ -43,40 +43,34 @@ static uint16_t normal_keys[LAST_KEYCODE + 1];
static _go32_dpmi_seginfo old_kbd_int; static _go32_dpmi_seginfo old_kbd_int;
static _go32_dpmi_seginfo kbd_int; static _go32_dpmi_seginfo kbd_int;
int LockData(void *a, int size) static int LockData(void *a, int size)
{ {
uint32_t baseaddr; uint32_t baseaddr;
__dpmi_meminfo region; if (__dpmi_get_segment_base_address(_my_ds(), &baseaddr) != -1)
{
if (__dpmi_get_segment_base_address(_my_ds(), &baseaddr) == -1) __dpmi_meminfo region;
return -1; region.handle = 0;
region.size = size;
region.handle = 0; region.address = baseaddr + (uint32_t)a;
region.size = size; if (__dpmi_lock_linear_region(&region) != -1)
region.address = baseaddr + (uint32_t)a; return 0;
}
if (__dpmi_lock_linear_region(&region) == -1) return -1;
return -1;
return 0;
} }
int LockCode(void *a, int size) static int LockCode(void *a, int size)
{ {
uint32_t baseaddr; uint32_t baseaddr;
__dpmi_meminfo region; if (__dpmi_get_segment_base_address(_my_cs(), &baseaddr) != -1)
{
if (__dpmi_get_segment_base_address(_my_cs(), &baseaddr) == -1) __dpmi_meminfo region;
return (-1); region.handle = 0;
region.size = size;
region.handle = 0; region.address = baseaddr + (uint32_t)a;
region.size = size; if (__dpmi_lock_linear_region(&region) != -1)
region.address = baseaddr + (uint32_t)a; return 0;
}
if (__dpmi_lock_linear_region(&region) == -1) return -1;
return (-1);
return 0;
} }
static void keyb_int(void) static void keyb_int(void)
@ -107,35 +101,6 @@ static void keyb_int(void)
} }
END_FUNC(keyb_int) END_FUNC(keyb_int)
static void hook_keyb_int(void)
{
_go32_dpmi_get_protected_mode_interrupt_vector(9, &old_kbd_int);
memset(&kbd_int, 0, sizeof(kbd_int));
memset(normal_keys, 0, sizeof(normal_keys));
LOCK_FUNC(keyb_int);
LOCK_VAR(normal_keys);
kbd_int.pm_selector = _go32_my_cs();
kbd_int.pm_offset = (uint32_t)&keyb_int;
_go32_dpmi_allocate_iret_wrapper(&kbd_int);
_go32_dpmi_set_protected_mode_interrupt_vector(9, &kbd_int);
}
static void unhook_keyb_int(void)
{
if (old_kbd_int.pm_offset)
{
_go32_dpmi_set_protected_mode_interrupt_vector(9, &old_kbd_int);
_go32_dpmi_free_iret_wrapper(&kbd_int);
memset(&old_kbd_int, 0, sizeof(old_kbd_int));
}
}
static const char *dos_joypad_name(unsigned pad) static const char *dos_joypad_name(unsigned pad)
{ {
return "DOS Controller"; return "DOS Controller";
@ -155,7 +120,20 @@ static void dos_joypad_autodetect_add(unsigned autoconf_pad)
static void *dos_joypad_init(void *data) static void *dos_joypad_init(void *data)
{ {
hook_keyb_int(); _go32_dpmi_get_protected_mode_interrupt_vector(9, &old_kbd_int);
memset(&kbd_int, 0, sizeof(kbd_int));
memset(normal_keys, 0, sizeof(normal_keys));
LOCK_FUNC(keyb_int);
LOCK_VAR(normal_keys);
kbd_int.pm_selector = _go32_my_cs();
kbd_int.pm_offset = (uint32_t)&keyb_int;
_go32_dpmi_allocate_iret_wrapper(&kbd_int);
_go32_dpmi_set_protected_mode_interrupt_vector(9, &kbd_int);
dos_joypad_autodetect_add(0); dos_joypad_autodetect_add(0);
return (void*)-1; return (void*)-1;
} }
@ -258,7 +236,13 @@ static bool dos_joypad_query_pad(unsigned pad)
static void dos_joypad_destroy(void) static void dos_joypad_destroy(void)
{ {
unhook_keyb_int(); if (old_kbd_int.pm_offset)
{
_go32_dpmi_set_protected_mode_interrupt_vector(9, &old_kbd_int);
_go32_dpmi_free_iret_wrapper(&kbd_int);
memset(&old_kbd_int, 0, sizeof(old_kbd_int));
}
} }
input_device_driver_t dos_joypad = { input_device_driver_t dos_joypad = {