99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
#define GINT_NEED_VRAM
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#include <gint/display.h>
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#include <gint/exc.h>
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#include <gint/defs/attributes.h>
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#define dprint(x, y, ...) dprint(x, y, C_BLACK, C_NONE, __VA_ARGS__)
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#define dtext(x, y, str) dtext (x, y, str, C_BLACK, C_NONE)
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/* gint_exc(): Exception handler fatal error message */
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void gint_exc(GUNUSED uint32_t code)
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{
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uint32_t TEA = *(volatile uint32_t *)0xff00000c;
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uint32_t TRA = *(volatile uint32_t *)0xff000020 >> 2;
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uint32_t PC;
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__asm__("stc spc, %0" : "=r"(PC));
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dfont(NULL);
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dclear(C_WHITE);
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#ifdef FX9860G
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dtext(1, 0, "Exception! (SysERROR)");
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for(int i = 0; i < 32; i++) vram[i] = ~vram[i];
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char const *name = "";
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if(code == 0x040) name = "TLB miss read";
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if(code == 0x060) name = "TLB miss write";
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if(code == 0x0e0) name = "Read address error";
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if(code == 0x100) name = "Write address error";
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if(code == 0x160) name = "Unconditional trap";
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if(code == 0x180) name = "Illegal instruction";
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if(code == 0x1a0) name = "Illegal delay slot";
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/* Custom gint codes for convenience */
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if(code == 0x1020) name = "DMA address error";
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if(code == 0x1040) name = "Add-in too large";
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if(name[0]) dtext(1, 9, name);
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else dprint(1, 9, "%03x", code);
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dprint(1, 17, " PC :%08x", PC);
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dprint(1, 25, "TEA :%08x", TEA);
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dprint(1, 33, "TRA :%08x", TRA);
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dtext(1, 49, "The add-in crashed.");
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dtext(1, 57, "Please reset the calc");
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#endif
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#ifdef FXCG50
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dtext(6, 3, "An exception occured! (System ERROR)");
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uint32_t *long_vram = (void *)vram;
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for(int i = 0; i < 198 * 16; i++) long_vram[i] = ~long_vram[i];
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char const *name = "";
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if(code == 0x040) name = "TLB miss (nonexisting address) on read";
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if(code == 0x060) name = "TLB miss (nonexisting address) on write";
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if(code == 0x0e0) name = "Read address error (probably alignment)";
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if(code == 0x100) name = "Write address error (probably alignment)";
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if(code == 0x160) name = "Unconditional trap";
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if(code == 0x180) name = "Illegal instruction";
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if(code == 0x1a0) name = "Illegal delay slot instruction";
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/* Custom gint codes for convenience */
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if(code == 0x1020) name = "DMA address error";
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if(code == 0x1040) name = "Add-in not fully mapped (too large)";
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dprint(6, 25, "%03x %s", code, name);
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dtext(6, 45, "PC");
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dprint(38, 45, "= %08x", PC);
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dtext(261, 45, "(Error location)");
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dtext(6, 60, "TEA");
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dprint(38, 60, "= %08x", TEA);
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dtext(234, 60, "(Offending address)");
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dtext(6, 75, "TRA");
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dprint(38, 75, "= %#x", TRA);
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dtext(281, 75, "(Trap number)");
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dtext(6, 95, "An unrecoverable error ocurred in the add-in.");
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dtext(6, 108, "Please press the RESET button to restart the");
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dtext(6, 121, "calculator.");
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#endif
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dupdate_noint();
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}
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/* gint_exch_tlbh(): Exception and TLB miss handler */
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__attribute__((interrupt_handler)) GSECTION(".gint.exch_tlbh") GALIGNED(4)
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void gint_exch_tlbh(void)
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{
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uint32_t EXPEVT = *(volatile uint32_t *)0xff000024;
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gint_exc(EXPEVT);
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while(1);
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}
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