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Add pre-defined panic utilities

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This commit is contained in:
Michael Scire 2018-03-04 17:23:16 -08:00
parent 4c38be1560
commit 1fa64fccbf
3 changed files with 29 additions and 0 deletions
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21
exosphere/src/panic_color.h Normal file
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@ -0,0 +1,21 @@
#ifndef EXOSPHERE_PANIC_COLOR_H
#define EXOSPHERE_PANIC_COLOR_H
#define COLOR_0 0x00F00003
#define COLOR_1 0x0F000003
#define COLOR_2 0xF0000003
#define COLOR_3 0x0FF00003
#define COLOR_4 0xF0F00003
#define COLOR_5 0xFF000003
#define COLOR_6 0xFFF00003
#define COLOR_7 0xAAF00003
#define COLOR_8 0xAFA00003
#define COLOR_9 0xFAA00003
#define COLOR_A 0x33300003
#define COLOR_B 0x06F00003
#define COLOR_C 0x14800003
#define COLOR_D 0x00300003
#define COLOR_E 0x03000003
#define COLOR_F 0xB6000003
#endif

5
exosphere/src/utils.c
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@ -23,6 +23,11 @@ __attribute__ ((noreturn)) void generic_panic(void) {
panic(0xFF000006);
}
__attribute__ ((noreturn)) void panic_predefined(uint32_t which) {
static const uint32_t codes[0x10] = {COLOR_0, COLOR_1, COLOR_2, COLOR_3, COLOR_4, COLOR_5, COLOR_6, COLOR_7, COLOR_8, COLOR_9, COLOR_A, COLOR_B, COLOR_C, COLOR_D, COLOR_E, COLOR_F};
panic(codes[which & 0xF]);
}
__attribute__((noinline)) bool overlaps(uint64_t as, uint64_t ae, uint64_t bs, uint64_t be)
{
if(as <= bs && bs <= ae)

3
exosphere/src/utils.h
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@ -5,6 +5,8 @@
#include <stddef.h>
#include <stdint.h>
#include "panic_color.h"
#define BIT(n) (1u << (n))
#define BITL(n) (1ull << (n))
#define MASK(n) (BIT(n) - 1)
@ -52,6 +54,7 @@ typedef struct {
__attribute__ ((noreturn)) void panic(uint32_t code);
__attribute__ ((noreturn)) void generic_panic(void);
__attribute__ ((noreturn)) void panic_predefined(uint32_t which);
bool overlaps(uint64_t as, uint64_t ae, uint64_t bs, uint64_t be);
static inline uintptr_t get_physical_address(const void *vaddr) {