This is a maintenance fork
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

118 lines
4.9 KiB

#ifndef APE_CONFIG_H_
#define APE_CONFIG_H_
#include "ape/relocations.h"
#include "libc/macros.h"
/*
* Post-Initialization Read-Only Code Size Threshold.
*
* An executable needs to have at least this much code, before the
* linker adds non-mandatory 4kb alignments. The benefit is better
* memory protection. The tradeoff is sparser binaries.
*/
#ifndef APE_PIRO_THRESHOLD
#ifdef CONFIG_DBG
#define APE_PIRO_THRESHOLD 0x1000
#else
#define APE_PIRO_THRESHOLD 0x10000
#endif
#endif
#ifndef METAL_STDIN
#define METAL_STDIN COM1
#endif
#ifndef METAL_STDOUT
#define METAL_STDOUT COM1
#endif
#ifndef METAL_STDERR
#define METAL_STDERR COM1
#endif
#ifndef VIDYA_MODE
#define VIDYA_MODE VIDYA_MODE_CGA
#endif
/* FPU Control Word (x87) Exception Masks
@see Intel Manual V1 §8.1.5
IM: Invalid Operation ───────────────┐
DM: Denormal Operand ───────────────┐│
ZM: Zero Divide ───────────────────┐││
OM: Overflow ─────────────────────┐│││
UM: Underflow ───────────────────┐││││
PM: Precision ──────────────────┐│││││
PC: Precision Control ────────┐ ││││││
{float,∅,double,long double} │ ││││││
RC: Rounding Control ───────┐ │ ││││││
{even, →-∞, →+∞, →0} │┌┤ ││││││
┌┤││ ││││││
d││││rr││││││*/
#define X87_NORMAL 0b000000000001101111111
#define X87_DTOA 0b000000000001000000000
#define X87_DTOA_MASK 0b000000000001100000000
#ifndef X87_DEFAULT
#define X87_DEFAULT X87_NORMAL
#endif
#ifndef UART_BAUD_RATE
#define UART_BAUD_RATE 9600 /* bits per second ∈ [50,115200] */
#endif
#define UART_CONF_DLR (1843200 /*hz*/ / 16 /*wut*/ / (UART_BAUD_RATE))
#ifndef UART_CONF_IIR
/* ┌interrupt trigger level {1,4,8,14}
│ ┌enable 64 byte fifo (UART 16750+)
│ │ ┌select dma mode
│ │ │┌clear transmit fifo
│ │ ││┌clear receive fifo
├┐│ │││┌enable fifos*/
#define UART_CONF_IIR 0b00000000
#endif
#ifndef UART_CONF_LCR
/* ┌dlab: flips configuration mode state
│┌enable break signal
││ ┌parity {none,odd,even,high,low}
││ │ ┌extra stop bit
││ │ │┌data word length (bits+5)
││┌┴┐│├┐*/
#define UART_CONF_LCR 0b01000011
#endif
#define XLM(VAR) (XLM_BASE_REAL + XLM_##VAR)
#define XLMV(VAR) (__xlm + XLM_##VAR)
#define XLM_BASE_REAL 0x1000
#define XLM_E820 0
#define XLM_E820_SIZE 0x2000
#define XLM_BIOS_DATA_AREA 0x2000
#define XLM_BIOS_DATA_AREA_SIZE 256
#define XLM_DRIVE_BASE_TABLE 0x2200 /* drive values are contiguous */
#define XLM_DRIVE_BASE_TABLE_SIZE 11
#define XLM_DRIVE_TYPE 0x220b
#define XLM_DRIVE_TYPE_SIZE 1
#define XLM_DRIVE_LAST_SECTOR 0x220c /* 1-based inclusive, e.g. 18 */
#define XLM_DRIVE_LAST_SECTOR_SIZE 1
#define XLM_DRIVE_LAST_CYLINDER 0x220d /* 0-based incl, e.g. 79 */
#define XLM_DRIVE_LAST_CYLINDER_SIZE 2
#define XLM_DRIVE_ATTACHED 0x220f
#define XLM_DRIVE_ATTACHED_SIZE 1
#define XLM_DRIVE_LAST_HEAD 0x2210 /* 0-based inclusive, e.g. 1 */
#define XLM_DRIVE_LAST_HEAD_SIZE 1
#define XLM_DRIVE 0x2211
#define XLM_DRIVE_SIZE 1
#define XLM_HAVEEXTMEMKB 0x2212
#define XLM_HAVEEXTMEMKB_SIZE 4
#define XLM_VIDEO_POSITION_FAR_POINTER 0x2216 /* video cursor far pointer */
#define XLM_VIDEO_POSITION_FAR_POINTER_SIZE 4
#define XLM_PAGE_TABLE_STACK_POINTER 0x2220
#define XLM_PAGE_TABLE_STACK_POINTER_SIZE 8
#define XLM_BADIDT 0x2230
#define XLM_BADIDT_SIZE 6
#define XLM_LOADSTATE 0x2240
#define XLM_LOADSTATE_SIZE 8
#define XLM_SIZE ROUNDUP(XLM_LOADSTATE + XLM_LOADSTATE_SIZE, 0x1000)
#define IMAGE_BASE_REAL (XLM_BASE_REAL + XLM_SIZE)
#if !defined(__LINKER__) && !defined(__ASSEMBLER__)
extern char __xlm[XLM_SIZE];
#endif /* !defined(__LINKER__) && !defined(__ASSEMBLER__) */
#endif /* APE_CONFIG_H_ */