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gdb stub: re-enable for ESP32-C2

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This commit is contained in:
Ivan Grokhotkov
2022-12-01 13:52:44 +01:00
parent e68c9a6733
commit e3a4d47fd9
6 changed files with 37 additions and 22 deletions
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20
components/esp_gdbstub/esp32c2/gdbstub_esp32c2.c
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@@ -29,7 +29,6 @@ static const mem_bound_t mem_region_table [GDBSTUB_MEM_REGION_COUNT] =
{SOC_DRAM_LOW, SOC_DRAM_HIGH},
{SOC_IROM_MASK_LOW, SOC_IROM_MASK_HIGH},
{SOC_DROM_MASK_LOW, SOC_DROM_MASK_HIGH},
// RTC DRAM and RTC DATA are identical with RTC IRAM, hence we skip them
// We shouldn't read the uart registers since it will disturb the debugging via UART,
// so skip UART part of the peripheral registers.
{DR_REG_UART_BASE + UART_REG_FIELD_LEN, SOC_PERIPHERAL_HIGH},
@@ -84,3 +83,22 @@ int esp_gdbstub_readmem(intptr_t addr)
uint32_t shift = (addr & 3) * 8;
return (val_aligned >> shift) & 0xff;
}
int esp_gdbstub_writemem(unsigned int addr, unsigned char data)
{
if (!check_inside_valid_region(addr)) {
/* see esp_cpu_configure_region_protection */
return -1;
}
/* 'addr' may be pointing at the memory which does not allow for
* byte access, such as IRAM.
* Perform a word-aligned read-modify-write, instead of writing
* the byte directly.
*/
unsigned *addr_aligned = (unsigned *)(addr & (~3));
const uint32_t bit_offset = (addr & 0x3) * 8;
const uint32_t mask = ~(0xff << bit_offset);
*addr_aligned = (*addr_aligned & mask) | (data << bit_offset);
return 0;
}