Apply coding standards to M100, break up into functions
This commit is contained in:
Scott Lahteine
parent
ba85faabc0
commit
03aa9a390e
@ -26,227 +26,238 @@
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* This code watches the free memory block between the bottom of the heap and the top of the stack.
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* This code watches the free memory block between the bottom of the heap and the top of the stack.
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* This memory block is initialized and watched via the M100 command.
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* This memory block is initialized and watched via the M100 command.
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*
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*
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* M100 I Initializes the free memory block and prints vitals statistics about the area
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* M100 I Initializes the free memory block and prints vitals statistics about the area
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* M100 F Identifies how much of the free memory block remains free and unused. It also
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*
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* detects and reports any corruption within the free memory block that may have
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* M100 F Identifies how much of the free memory block remains free and unused. It also
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* happened due to errant firmware.
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* detects and reports any corruption within the free memory block that may have
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* M100 D Does a hex display of the free memory block along with a flag for any errant
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* happened due to errant firmware.
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* data that does not match the expected value.
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*
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* M100 C x Corrupts x locations within the free memory block. This is useful to check the
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* M100 D Does a hex display of the free memory block along with a flag for any errant
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* correctness of the M100 F and M100 D commands.
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* data that does not match the expected value.
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*
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* M100 C x Corrupts x locations within the free memory block. This is useful to check the
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* correctness of the M100 F and M100 D commands.
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*
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*
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* Initial version by Roxy-3D
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* Initial version by Roxy-3D
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*/
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*/
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#define M100_FREE_MEMORY_DUMPER // Comment out to remove Dump sub-command
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#define M100_FREE_MEMORY_DUMPER // Enable for the `M110 D` Dump sub-command
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#define M100_FREE_MEMORY_CORRUPTOR // Comment out to remove Corrupt sub-command
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#define M100_FREE_MEMORY_CORRUPTOR // Enable for the `M100 C` Corrupt sub-command
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#include "Marlin.h"
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#include "MarlinConfig.h"
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#if ENABLED(M100_FREE_MEMORY_WATCHER)
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#if ENABLED(M100_FREE_MEMORY_WATCHER)
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#define TEST_BYTE 0xE5
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extern char* __brkval;
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extern char* __brkval;
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extern size_t __heap_start, __heap_end, __flp;
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extern size_t __heap_start, __heap_end, __flp;
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extern char __bss_end;
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extern char __bss_end;
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//
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#include "Marlin.h"
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// Utility functions used by M100 to get its work done.
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//
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#include "hex_print_routines.h"
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#include "hex_print_routines.h"
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char* top_of_stack();
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//
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int how_many_E5s_are_here(char*);
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// Utility functions
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int free_memory_is_corrupted(); // int not bool!!!! it will tell us how many blocks of
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//
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// free memory it found.
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void gcode_M100() {
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static bool m100_not_initialized = true;
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char* sp, *ptr;
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int i, j, n;
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//
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// M100 D dumps the free memory block from __brkval to the stack pointer.
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// malloc() eats memory from the start of the block and the stack grows
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// up from the bottom of the block. Solid 0xE5's indicate nothing has
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// used that memory yet. There should not be anything but 0xE5's within
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// the block of 0xE5's. If there is, that would indicate memory corruption
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// probably caused by bad pointers. Any unexpected values will be flagged in
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// the right hand column to help spotting them.
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//
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SERIAL_ECHOPAIR("\n__brkval : 0x", hex_word((uint16_t)__brkval) );
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SERIAL_ECHOPAIR("\n__bss_end : 0x", hex_word((uint16_t)&__bss_end));
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//
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// With out malloc() we need to be smart and use &__bss_end
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//
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ptr = __brkval ? __brkval : &__bss_end;
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SERIAL_ECHOPAIR("\nstart of free space : 0x", hex_word((uint16_t)ptr));
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sp = top_of_stack();
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#define END_OF_HEAP() (__brkval ? __brkval : &__bss_end)
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SERIAL_ECHOLNPAIR("\nStack Pointer : 0x", hex_word((uint16_t)sp));
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#if ENABLED(M100_FREE_MEMORY_DUMPER) // Disable to remove Dump sub-command
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if (code_seen('D')) {
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//
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// We want to start and end the dump on a nice 16 byte boundry even though
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// the values we are using are not 16 byte aligned.
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//
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ptr = (char*) ((uint16_t) ptr & 0xfff0);
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sp = (char*) ((uint16_t) sp | 0x000f);
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n = sp - ptr;
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//
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// This is the main loop of the Dump command.
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//
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while (ptr < sp) {
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print_hex_word((uint16_t)ptr); // Print the address
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SERIAL_CHAR(':');
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for (i = 0; i < 16; i++) { // and 16 data bytes
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if (i==8)
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SERIAL_CHAR('-');
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print_hex_byte(*(ptr + i));
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SERIAL_CHAR(' ');
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}
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SERIAL_CHAR('|'); // now show where non 0xE5's are
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for (i = 0; i < 16; i++)
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SERIAL_CHAR((*(ptr + i) == (char)0xe5) ? ' ' : '?');
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SERIAL_EOL;
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ptr += 16;
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idle();
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}
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return;
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}
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#endif
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//
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// M100 F requests the code to return the number of free bytes in the memory pool along with
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// other vital statistics that define the memory pool.
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//
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if (code_seen('F')) {
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int max_cnt = -1, block_cnt = 0;
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uint16_t max_addr=0;
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ptr = __brkval ? __brkval : &__bss_end;
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sp = top_of_stack();
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n = sp - ptr;
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// Scan through the range looking for the biggest block of 0xE5's we can find
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for (i = 0; i < n; i++) {
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if (*(ptr + i) == (char)0xe5) {
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j = how_many_E5s_are_here(ptr + i);
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if (j > 8) {
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SERIAL_ECHOPAIR("Found ", j);
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SERIAL_ECHOLNPAIR(" bytes free at 0x", hex_word((uint16_t)(ptr + i)));
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if (j > max_cnt) {
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max_cnt = j;
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max_addr = (uint16_t) ptr + i;
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}
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i += j;
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block_cnt++;
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}
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}
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}
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if (block_cnt > 1) {
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SERIAL_ECHOLNPGM("\nMemory Corruption detected in free memory area.");
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SERIAL_ECHOPAIR("\nLargest free block is ", max_cnt);
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SERIAL_ECHOLNPAIR(" bytes big at 0x", hex_word(max_addr));
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}
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SERIAL_ECHOLNPAIR("free_memory_is_corrupted() = ", free_memory_is_corrupted());
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return;
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}
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//
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// M100 C x Corrupts x locations in the free memory pool and reports the locations of the corruption.
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// This is useful to check the correctness of the M100 D and the M100 F commands.
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//
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#if ENABLED(M100_FREE_MEMORY_CORRUPTOR)
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if (code_seen('C')) {
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int x = code_value_int(); // x gets the # of locations to corrupt within the memory pool
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SERIAL_ECHOLNPGM("Corrupting free memory block.\n");
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ptr += 8;
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sp = top_of_stack();
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n = sp - ptr - 250; // -250 just to keep us from finding interrupt activity that
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// has altered the stack.
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j = n / (x + 1);
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for (i = 1; i <= x; i++) {
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*(ptr + (i * j)) = i;
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SERIAL_ECHOPAIR("\nCorrupting address: 0x", hex_word((uint16_t)(ptr + i * j)));
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}
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SERIAL_ECHOLNPGM("\n");
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return;
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}
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#endif
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//
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// M100 I Initializes the free memory pool so it can be watched and prints vital
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// statistics that define the free memory pool.
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//
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if (m100_not_initialized || code_seen('I')) { // If no sub-command is specified, the first time
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SERIAL_ECHOLNPGM("Initializing free memory block.\n"); // this happens, it will Initialize.
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// Repeated M100 with no sub-command will not destroy the
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// state of the initialized free memory pool.
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ptr += 8;
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SERIAL_ECHOLNPGM("\n");
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n = sp - ptr - 250; // -250 just to keep us from finding interrupt activity that
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// has altered the stack.
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SERIAL_ECHO(n);
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SERIAL_ECHOLNPGM(" bytes of memory initialized.\n");
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for (i = 0; i < n; i++)
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*(ptr + i) = (char)0xe5;
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for (i = 0; i < n; i++) {
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if (*(ptr + i) != (char)0xe5) {
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SERIAL_ECHOPAIR("? address : ", hex_word(ptr+i) );
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SERIAL_ECHOPAIR("=", hex_byte(*(ptr + i)) );
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SERIAL_ECHOLNPGM("\n");
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}
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}
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m100_not_initialized = false;
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return;
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}
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return;
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}
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// top_of_stack() returns the location of a variable on its stack frame. The value returned is above
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// the stack once the function returns to the caller.
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// Location of a variable on its stack frame. Returns a value above
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// the stack (once the function returns to the caller).
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char* top_of_stack() {
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char* top_of_stack() {
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char x;
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char x;
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return &x + 1; // x is pulled on return;
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return &x + 1; // x is pulled on return;
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}
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}
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// how_many_E5s_are_here() is a utility function to easily find out how many 0xE5's are
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// Count the number of test bytes at the specified location.
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// at the specified location. Having this logic as a function simplifies the search code.
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int16_t count_test_bytes(const char * const ptr) {
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//
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for (uint16_t i = 0; i < 32000; i++)
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int how_many_E5s_are_here(char* p) {
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if (ptr[i] != TEST_BYTE)
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int n;
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return i - 1;
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for (n = 0; n < 32000; n++) {
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if (*(p + n) != (char)0xe5)
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return n - 1;
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}
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return -1;
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return -1;
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}
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}
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// Return a count of free memory blocks.
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int free_memory_is_corrupted() {
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uint16_t free_memory_is_corrupted(char * const ptr, const uint16_t size) {
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char *sp, *ptr;
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// Find the longest block of test bytes in the given buffer
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int block_cnt = 0, i, j, n;
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uint16_t block_cnt = 0;
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for (uint16_t i = 0; i < size; i++) {
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ptr = __brkval ? __brkval : &__bss_end;
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if (ptr[i] == TEST_BYTE) {
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sp = top_of_stack();
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const uint16_t j = count_test_bytes(ptr + i);
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if (j > 8) {
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n = sp - ptr;
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//SERIAL_ECHOPAIR("Found ", j);
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//SERIAL_ECHOLNPAIR(" bytes free at 0x", hex_word((uint16_t)ptr + i));
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// Scan through the range looking for the biggest block of 0xE5's we can find
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i += j;
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for (i = 0; i < n; i++) {
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block_cnt++;
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if (*(ptr + i) == (char)0xe5) {
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j = how_many_E5s_are_here(ptr + i);
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if (j > 8) {
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// SERIAL_ECHOPAIR("Found ", j);
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// SERIAL_ECHOLNPAIR(" bytes free at 0x", hex_word((uint16_t)(ptr + i)));
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i += j;
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block_cnt++;
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}
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}
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}
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}
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}
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}
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//if (block_cnt > 1) {
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// SERIAL_ECHOLNPGM("\nMemory Corruption detected in free memory area.");
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// SERIAL_ECHOLNPAIR("\nLargest free block is ", max_cnt);
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//}
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return block_cnt;
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}
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// if (block_cnt > 1) {
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//
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// SERIAL_ECHOLNPGM("\nMemory Corruption detected in free memory area.");
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// M100 sub-commands
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// SERIAL_ECHOLNPAIR("\nLargest free block is ", max_cnt);
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//
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// }
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return block_cnt;
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#if ENABLED(M100_FREE_MEMORY_DUMPER)
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/**
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* M100 D
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* Dump the free memory block from __brkval to the stack pointer.
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* malloc() eats memory from the start of the block and the stack grows
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* up from the bottom of the block. Solid test bytes indicate nothing has
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* used that memory yet. There should not be anything but test bytes within
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* the block. If so, it may indicate memory corruption due to a bad pointer.
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* Unexpected bytes are flagged in the right column.
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*/
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void dump_free_memory(char *ptr, char *sp) {
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//
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// Start and end the dump on a nice 16 byte boundary
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// (even though the values are not 16-byte aligned).
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//
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ptr = (char*)((uint16_t)ptr & 0xFFF0); // Align to 16-byte boundary
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sp = (char*)((uint16_t)sp | 0x000F); // Align sp to the 15th byte (at or above sp)
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// Dump command main loop
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while (ptr < sp) {
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print_hex_word((uint16_t)ptr); // Print the address
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SERIAL_CHAR(':');
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for (uint8_t i = 0; i < 16; i++) { // and 16 data bytes
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if (i == 8) SERIAL_CHAR('-');
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print_hex_byte(ptr[i]);
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SERIAL_CHAR(' ');
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}
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SERIAL_CHAR('|'); // Point out non test bytes
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for (uint8_t i = 0; i < 16; i++)
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SERIAL_CHAR(ptr[i] == TEST_BYTE ? ' ' : '?');
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SERIAL_EOL;
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ptr += 16;
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idle();
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}
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}
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#endif // M100_FREE_MEMORY_DUMPER
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/**
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* M100 F
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* Return the number of free bytes in the memory pool,
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* with other vital statistics defining the pool.
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*/
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void free_memory_pool_report(const char * const ptr, const uint16_t size) {
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int16_t max_cnt = -1;
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uint16_t block_cnt = 0;
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char *max_addr = NULL;
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// Find the longest block of test bytes in the buffer
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for (uint16_t i = 0; i < size; i++) {
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char * const addr = ptr + i;
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if (*addr == TEST_BYTE) {
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const uint16_t j = count_test_bytes(addr);
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if (j > 8) {
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SERIAL_ECHOPAIR("Found ", j);
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SERIAL_ECHOLNPAIR(" bytes free at 0x", hex_word((uint16_t)addr));
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if (j > max_cnt) {
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max_cnt = j;
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max_addr = addr;
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}
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i += j;
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block_cnt++;
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}
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}
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}
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if (block_cnt > 1) {
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SERIAL_ECHOLNPGM("\nMemory Corruption detected in free memory area.");
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SERIAL_ECHOPAIR("\nLargest free block is ", max_cnt);
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SERIAL_ECHOLNPAIR(" bytes at 0x", hex_word((uint16_t)max_addr));
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}
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SERIAL_ECHOLNPAIR("free_memory_is_corrupted() = ", free_memory_is_corrupted(ptr, size));
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}
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#if ENABLED(M100_FREE_MEMORY_CORRUPTOR)
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/**
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* M100 C<num>
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* Corrupt <num> locations in the free memory pool and report the corrupt addresses.
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* This is useful to check the correctness of the M100 D and the M100 F commands.
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*/
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void corrupt_free_memory(char *ptr, const uint16_t size) {
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if (code_seen('C')) {
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ptr += 8;
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const uint16_t near_top = top_of_stack() - ptr - 250, // -250 to avoid interrupt activity that's altered the stack.
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j = near_top / (size + 1);
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SERIAL_ECHOLNPGM("Corrupting free memory block.\n");
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for (uint16_t i = 1; i <= size; i++) {
|
||||||
|
char * const addr = ptr + i * j;
|
||||||
|
*addr = i;
|
||||||
|
SERIAL_ECHOPAIR("\nCorrupting address: 0x", hex_word((uint16_t)addr));
|
||||||
|
}
|
||||||
|
SERIAL_EOL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#endif // M100_FREE_MEMORY_CORRUPTOR
|
||||||
|
|
||||||
|
/**
|
||||||
|
* M100 I
|
||||||
|
* Init memory for the M100 tests. (Automatically applied on the first M100.)
|
||||||
|
*/
|
||||||
|
void init_free_memory(char *ptr, int16_t size) {
|
||||||
|
SERIAL_ECHOLNPGM("Initializing free memory block.\n\n");
|
||||||
|
|
||||||
|
size -= 250; // -250 to avoid interrupt activity that's altered the stack.
|
||||||
|
if (size < 0) return;
|
||||||
|
|
||||||
|
ptr += 8;
|
||||||
|
memset(ptr, TEST_BYTE, size);
|
||||||
|
|
||||||
|
SERIAL_ECHO(size);
|
||||||
|
SERIAL_ECHOLNPGM(" bytes of memory initialized.\n");
|
||||||
|
|
||||||
|
for (uint16_t i = 0; i < size; i++) {
|
||||||
|
if (ptr[i] != TEST_BYTE) {
|
||||||
|
SERIAL_ECHOPAIR("? address : 0x", hex_word((uint16_t)ptr + i));
|
||||||
|
SERIAL_ECHOPAIR("=", hex_byte(ptr[i]));
|
||||||
|
SERIAL_EOL; SERIAL_EOL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* M100: Free Memory Check
|
||||||
|
*/
|
||||||
|
void gcode_M100() {
|
||||||
|
SERIAL_ECHOPAIR("\n__brkval : 0x", hex_word((uint16_t)__brkval));
|
||||||
|
SERIAL_ECHOPAIR("\n__bss_end : 0x", hex_word((uint16_t)&__bss_end));
|
||||||
|
|
||||||
|
char *ptr = END_OF_HEAP(), *sp = top_of_stack();
|
||||||
|
|
||||||
|
SERIAL_ECHOPAIR("\nstart of free space : 0x", hex_word((uint16_t)ptr));
|
||||||
|
SERIAL_ECHOLNPAIR("\nStack Pointer : 0x", hex_word((uint16_t)sp));
|
||||||
|
|
||||||
|
// Always init on the first invocation of M100
|
||||||
|
static bool m100_not_initialized = true;
|
||||||
|
if (m100_not_initialized || code_seen('I')) {
|
||||||
|
m100_not_initialized = false;
|
||||||
|
init_free_memory(ptr, sp - ptr);
|
||||||
}
|
}
|
||||||
|
|
||||||
#endif
|
#if ENABLED(M100_FREE_MEMORY_DUMPER)
|
||||||
|
|
||||||
|
if (code_seen('D'))
|
||||||
|
return dump_free_memory(ptr, sp);
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
if (code_seen('F'))
|
||||||
|
return free_memory_pool_report(ptr, sp - ptr);
|
||||||
|
|
||||||
|
#if ENABLED(M100_FREE_MEMORY_CORRUPTOR)
|
||||||
|
|
||||||
|
if (code_seen('C'))
|
||||||
|
return corrupt_free_memory(ptr, code_value_int());
|
||||||
|
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif // M100_FREE_MEMORY_WATCHER
|
||||||
|
|||||||
@ -43,7 +43,7 @@ char* hex_word(const uint16_t w) {
|
|||||||
return _hex;
|
return _hex;
|
||||||
}
|
}
|
||||||
|
|
||||||
void print_hex_nybble(const uint8_t n) { SERIAL_CHAR(hex_nybble(n)); }
|
void print_hex_nybble(const uint8_t n) { SERIAL_CHAR(hex_nybble(n)); }
|
||||||
void print_hex_byte(const uint8_t b) { SERIAL_ECHO(hex_byte(b)); }
|
void print_hex_byte(const uint8_t b) { SERIAL_ECHO(hex_byte(b)); }
|
||||||
void print_hex_word(const uint16_t w) { SERIAL_ECHO(hex_word(w)); }
|
void print_hex_word(const uint16_t w) { SERIAL_ECHO(hex_word(w)); }
|
||||||
|
|
||||||
|
|||||||
@ -42,4 +42,4 @@ void print_hex_byte(const uint8_t b);
|
|||||||
void print_hex_word(const uint16_t w);
|
void print_hex_word(const uint16_t w);
|
||||||
|
|
||||||
#endif // AUTO_BED_LEVELING_UBL || M100_FREE_MEMORY_WATCHER
|
#endif // AUTO_BED_LEVELING_UBL || M100_FREE_MEMORY_WATCHER
|
||||||
#endif // HEX_PRINT_ROUTINES_H
|
#endif // HEX_PRINT_ROUTINES_H
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user