4bd97c6535
Merge the x1000 and jz47xx exception handling code since they use the same exception vectors and handlers. The interrupt handler is now called from the common exception vector, but remains separate for each board since they have different IRQ layouts. The new exception handler can provide a stack traceback from the interrupted code, rather than the (uninteresting) caller traceback displayed by panicf. This allows you to see what led up to a null pointer deref or division by zero, which makes it _much_ easier to track down errors that occur in common leaf functions like strcmp. Change-Id: I59a0ebb5e40fcb36505c3bfdb47f8cac2f9936b1
121 lines
2.4 KiB
Text
121 lines
2.4 KiB
Text
#include "config.h"
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#include "cpu.h"
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OUTPUT_FORMAT("elf32-littlemips")
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OUTPUT_ARCH(MIPS)
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ENTRY(_start)
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STARTUP(target/mips/ingenic_x1000/crt0.o)
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INPUT(target/mips/exception-mips.o)
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INPUT(target/mips/system-mips.o)
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#ifdef BOOTLOADER
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# undef PLUGIN_BUFFER_SIZE
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# undef CODEC_SIZE
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# define PLUGIN_BUFFER_SIZE 0
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# define CODEC_SIZE 0
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#endif
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/* End of the audio buffer, where the codec buffer starts */
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#define ENDAUDIOADDR (X1000_DRAM_END - PLUGIN_BUFFER_SIZE - CODEC_SIZE)
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/* Where the codec buffer ends, and the plugin buffer starts */
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#define ENDCODECADDR (ENDAUDIOADDR + CODEC_SIZE)
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MEMORY
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{
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IRAM : ORIGIN = X1000_IRAM_BASE, LENGTH = X1000_IRAM_SIZE
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DRAM : ORIGIN = X1000_DRAM_BASE, LENGTH = X1000_DRAM_SIZE
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TCSM : ORIGIN = X1000_TCSM_BASE, LENGTH = X1000_TCSM_SIZE
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}
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SECTIONS
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{
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.text :
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{
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loadaddress = .;
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_loadaddress = .;
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*(.init.text);
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*(.text*);
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} > DRAM
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. = ALIGN(4);
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.rodata :
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{
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*(.rodata*);
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} > DRAM
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. = ALIGN(4);
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.data :
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{
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*(.data*);
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*(.sdata*);
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} > DRAM
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.iram X1000_IRAM_BASE: AT (_bssbegin)
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{
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_iramstart = .;
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. = 0x000; /* TLB refill */
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KEEP(*(.vectors.1));
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. = 0x100; /* Cache error */
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KEEP(*(.vectors.2));
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. = 0x180; /* General exception */
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KEEP(*(.vectors.3));
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. = 0x200; /* Interrupt */
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KEEP(*(.vectors.4));
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KEEP(*(.vectors));
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*(.icode*);
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*(.irodata);
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*(.idata);
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_iramend = .;
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} > IRAM
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_iramcopy = LOADADDR(.iram);
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.tcsm X1000_TCSM_BASE: AT (_bssbegin + SIZEOF(.iram))
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{
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_tcsmstart = .;
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KEEP(*(.tcsm*));
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_tcsmend = .;
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} > TCSM
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_tcsmcopy = LOADADDR(.tcsm);
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. = ALIGN(4);
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.stack (NOLOAD) :
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{
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*(.stack);
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stackbegin = .;
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. += X1000_STACKSIZE;
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stackend = .;
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_irqstackbegin = .;
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. += X1000_IRQSTACKSIZE;
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_irqstackend = .;
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} > IRAM
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.bss (NOLOAD) :
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{
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_bssbegin = .;
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*(.sbss*);
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*(.bss*);
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*(COMMON);
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*(.scommon*);
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_bssend = .;
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_end = .;
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} > DRAM
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.audiobuf :
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{
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. = ALIGN(4);
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audiobuffer = .;
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} > DRAM
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audiobufend = ENDAUDIOADDR;
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codecbuf = ENDAUDIOADDR;
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pluginbuf = ENDCODECADDR;
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/DISCARD/ :
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{
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*(.MIPS.abiflags);
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*(.eh_frame);
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*(.rel.dyn);
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}
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}
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