blue-pill: copying linker script over
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@ -1,11 +1,18 @@
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MEMORY
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{
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flash (rx) : ORIGIN = 0x00000000, LENGTH = 128K
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flash (rx) : ORIGIN = 0x08000000, LENGTH = 64K
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sram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
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}
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EXTERN(vectors);
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ENTRY(reset_handler);
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SECTIONS
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{
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.text : { *(.text*) } > flash
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.text : {
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*(.vectors*)
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*(.text*)
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. = ALIGN(4);
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} > flash
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.bss : { *(.bss*) } > sram
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}
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@ -8,29 +8,26 @@
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.cpu cortex-m3
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.thumb
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.globl vectors
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.section .text
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.global vectors
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vectors:
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.align 2
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.long 0x20002000 /* best guess at stack pointer */
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.long 0x100 /* best guess at stack pointer */
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.long reset_handler /* reset handler */
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.long hang /* NMI handler */
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.long hang /* hard_fault_handler */
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.long hang /* memory management handler */
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.long hang /* bus fault handler */
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.long hang /* usage fault handler */
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.long 0 /* NMI handler */
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.long 0 /* hard_fault_handler */
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.long 0 /* memory management handler */
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.long 0 /* bus fault handler */
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.long 0 /* usage fault handler */
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.skip 0x20 /* reserved */
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.long hang /* svcall handler */
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.long hang /* debug handler */
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.long 0 /* svcall handler */
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.long 0 /* debug handler */
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.skip 4 /* reserved */
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.long hang /* pendsv handler */
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.long hang /* systick handler */
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.skip 0x100 /* remaining / IRQ vectors */
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.thumb_func
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hang: b .
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.long 0 /* pendsv handler */
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.long 0 /* systick handler */
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.skip 0xf4 /* remaining / IRQ vectors */
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.thumb_func
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.global reset_handler
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reset_handler:
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bl main
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@ -4,7 +4,6 @@ constexpr uint32_t LED = 13;
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constexpr unsigned long SDELAY = 100000;
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constexpr unsigned long LDELAY = (SDELAY * 10) - (3 * SDELAY);
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// void __attribute__ ((weak, naked)) reset_handler(void) {
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int
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main() {
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GPIO_C->enable_clock();
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@ -21,4 +20,3 @@ main() {
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delay(SDELAY);
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}
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}
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@ -1,6 +1,6 @@
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MEMORY
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{
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flash (rx) : ORIGIN = 0x08000000, LENGTH = 64K
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flash (rx) : ORIGIN = 0x08000000, LENGTH = 128K
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sram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
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}
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@ -10,9 +10,8 @@ ENTRY(reset_handler);
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SECTIONS
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{
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.text : {
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*(.vectors*)
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*(.vectors)
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*(.text*)
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. = ALIGN(4);
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} > flash
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.bss : { *(.bss*) } > sram
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}
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@ -1,11 +1,18 @@
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MEMORY
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{
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flash (rx) : ORIGIN = 0x00000000, LENGTH = 128K
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flash (rx) : ORIGIN = 0x08000000, LENGTH = 64K
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sram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
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}
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EXTERN(vectors);
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ENTRY(reset_handler);
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SECTIONS
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{
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.text : { *(.text*) } > flash
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.text : {
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*(.vectors*)
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*(.text*)
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. = ALIGN(4);
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} > flash
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.bss : { *(.bss*) } > sram
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}
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