cpu/esp8266: vendor files changed for RTOS SDK
This commit is contained in:
Gunar Schorcht
parent
464bb9f4c4
commit
a6d01fc2de
1
cpu/esp8266/vendor/esp-gdbstub/gdbcmds
vendored
1
cpu/esp8266/vendor/esp-gdbstub/gdbcmds
vendored
@ -1,4 +1,3 @@
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file ../ld/esp8266.riot-os.sdk.app.ld
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#set remotedebug 1
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set remotelogfile gdb_rsp_logfile.txt
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set serial baud 115200
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99
cpu/esp8266/vendor/esp-gdbstub/gdbstub-cfg.h
vendored
99
cpu/esp8266/vendor/esp-gdbstub/gdbstub-cfg.h
vendored
@ -5,60 +5,75 @@
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extern "C" {
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#endif
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/*
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Enable this define if you're using the RTOS SDK. It will use a custom exception handler instead of the HAL
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and do some other magic to make everything work and compile under FreeRTOS.
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*/
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#ifndef GDBSTUB_FREERTOS
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#define GDBSTUB_FREERTOS 1
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#endif
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/*
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Enable this to make the exception and debugging handlers switch to a private stack. This will use
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up 1K of RAM, but may be useful if you're debugging stack or stack pointer corruption problems. It's
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normally disabled because not many situations need it. If for some reason the GDB communication
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stops when you run into an error in your code, try enabling this.
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*/
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/**
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* @brief Enable own stack for gdbstub
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*
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* Enable this to make the exception and debugging handlers switch to a
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* private stack. This will use GDBSTUB_STACK_SIZE of RAM, but may be useful
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* if you're debugging stack or stack pointer corruption problems. It's
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* normally disabled because not many situations need it. If for some reason
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* the GDB communication stops when you run into an error in your code, try
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* enabling this.
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*/
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#ifndef GDBSTUB_USE_OWN_STACK
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#define GDBSTUB_USE_OWN_STACK 0
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#define GDBSTUB_USE_OWN_STACK (0)
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#endif
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/*
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If this is defined, gdbstub will break the program when you press Ctrl-C in gdb. it does this by
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hooking the UART interrupt. Unfortunately, this means receiving stuff over the serial port won't
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work for your program anymore. This will fail if your program sets an UART interrupt handler after
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the gdbstub_init call.
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*/
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/**
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* @brief Size of gdbstub stack
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*
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* If own stack is enale for gdbstub (\ref GDBSTUB_USE_OWN_STACK),
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* GDBSTUB_STACK_SIZE defines the size of this stack.
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*/
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#ifndef GDBSTUB_STACK_SIZE
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#define GDBSTUB_STACK_SIZE (1024)
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#endif
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/**
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* @brief Enable Ctrl-C handling
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*
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* If Ctrl-C is enabled, gdbstub interrupts the program when you press the
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* Ctrl-C key either in gdb or, if used, in the console window. Ctrl-C handling
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* is realized by hooking the UART interrupt.
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*/
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#ifndef GDBSTUB_CTRLC_BREAK
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#define GDBSTUB_CTRLC_BREAK 1
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#define GDBSTUB_CTRLC_BREAK (1)
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#endif
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/*
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Enabling this will redirect console output to GDB. This basically means that printf/os_printf output
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will show up in your gdb session, which is useful if you use gdb to do stuff. It also means that if
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you use a normal terminal, you can't read the printfs anymore.
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*/
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/**
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* @brief Redirect console output to GDB
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*
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* Enabling this will redirect console output to GDB. This basically means
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* that printf/os_printf output will show up in your gdb session, which is
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* useful if you use gdb to do stuff. It also means that if you use a normal
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* terminal, you can't read the printfs anymore.
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*/
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#ifndef GDBSTUB_REDIRECT_CONSOLE_OUTPUT
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#define GDBSTUB_REDIRECT_CONSOLE_OUTPUT 1
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#define GDBSTUB_REDIRECT_CONSOLE_OUTPUT (1)
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#endif
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/*
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Enable this if you want the GDB stub to wait for you to attach GDB before running. It does this by
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breaking in the init routine; use the gdb 'c' command (continue) to start the program.
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*/
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/**
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* @brief Break on init
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*
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* Enable this if you want the GDB stub to wait for you to attach GDB before
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* running. It does this by breaking in the init routine; use the gdb 'c'
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* command (continue) to start the program.
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*/
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#ifndef GDBSTUB_BREAK_ON_INIT
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#define GDBSTUB_BREAK_ON_INIT 1
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#define GDBSTUB_BREAK_ON_INIT (1)
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#endif
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/*
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Function attributes for function types.
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Gdbstub functions are placed in flash or IRAM using attributes, as defined here. The gdbinit function
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(and related) can always be in flash, because it's called in the normal code flow. The rest of the
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gdbstub functions can be in flash too, but only if there's no chance of them being called when the
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flash somehow is disabled (eg during SPI operations or flash write/erase operations). If the routines
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are called when the flash is disabled (eg due to a Ctrl-C at the wrong time), the ESP8266 will most
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likely crash.
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*/
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/**
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* @brief Function attributes for function types.
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*
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* gdbstub functions are placed in flash or IRAM using attributes, as defined
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* here. The gdbinit function (and related) can always be in flash, because
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* it's called in the normal code flow. The rest of the gdbstub functions can
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* be in flash too, but only if there's no chance of them being called when the
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* flash somehow is disabled (eg during SPI operations or flash write/erase
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* operations). If the routines are called when the flash is disabled (e.g.
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* due to a Ctrl-C at the wrong time), the ESP8266 will most likely crash.
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*/
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#define ATTR_GDBINIT ICACHE_FLASH_ATTR
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#ifndef ATTR_GDBFN
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#define ATTR_GDBFN
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663
cpu/esp8266/vendor/esp-gdbstub/gdbstub-entry.S
vendored
663
cpu/esp8266/vendor/esp-gdbstub/gdbstub-entry.S
vendored
@ -8,397 +8,398 @@
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#include "gdbstub-cfg.h"
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#include "gdbstub-exc.h"
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#include <xtensa/config/specreg.h>
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#include <xtensa/config/core-isa.h>
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#include <xtensa/corebits.h>
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#define DEBUG_PC (EPC + XCHAL_DEBUGLEVEL)
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#define DEBUG_EXCSAVE (EXCSAVE + XCHAL_DEBUGLEVEL)
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#define DEBUG_PS (EPS + XCHAL_DEBUGLEVEL)
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#include "xtensa/xtensa_context.h"
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#define DEBUG_PC (EPC + XCHAL_DEBUGLEVEL)
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#define DEBUG_EXCSAVE (EXCSAVE + XCHAL_DEBUGLEVEL)
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#define DEBUG_PS (EPS + XCHAL_DEBUGLEVEL)
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.global gdbstub_savedRegs
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.global gdbstub_regs
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.global gdbstub_debug_exception_entry
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#if GDBSTUB_USE_OWN_STACK
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.global gdbstub_exceptionStack
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#endif
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.text
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.literal_position
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.text
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.literal_position
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.text
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.align 4
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/*
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The savedRegs struct:
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uint32_t pc;
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uint32_t ps;
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uint32_t sar;
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uint32_t vpri;
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uint32_t a0;
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uint32_t a[14]; //a2..a15
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uint32_t litbase;
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uint32_t sr176;
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uint32_t sr208;
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uint32_t a1;
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uint32_t reason;
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*/
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/*
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This is the debugging exception routine; it's called by the debugging vector
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We arrive here with all regs intact except for a2. The old contents of A2 are saved
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into the DEBUG_EXCSAVE special function register. EPC is the original PC.
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*/
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.text
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.align 4
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/**
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* @brief Debugging exception routine; it's called by the debugging vector
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*/
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gdbstub_debug_exception_entry:
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/*
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//Minimum no-op debug exception handler, for debug
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rsr a2,DEBUG_PC
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addi a2,a2,3
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wsr a2,DEBUG_PC
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xsr a2, DEBUG_EXCSAVE
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rfi XCHAL_DEBUGLEVEL
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*/
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//Save all regs to structure
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movi a2, gdbstub_savedRegs
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s32i a0, a2, 0x10
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s32i a1, a2, 0x58
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rsr a0, DEBUG_PS
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s32i a0, a2, 0x04
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rsr a0, DEBUG_EXCSAVE //was R2
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s32i a0, a2, 0x14
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s32i a3, a2, 0x18
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s32i a4, a2, 0x1c
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s32i a5, a2, 0x20
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s32i a6, a2, 0x24
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s32i a7, a2, 0x28
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s32i a8, a2, 0x2c
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s32i a9, a2, 0x30
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s32i a10, a2, 0x34
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s32i a11, a2, 0x38
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s32i a12, a2, 0x3c
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s32i a13, a2, 0x40
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s32i a14, a2, 0x44
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s32i a15, a2, 0x48
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rsr a0, SAR
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s32i a0, a2, 0x08
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rsr a0, LITBASE
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s32i a0, a2, 0x4C
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rsr a0, 176
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s32i a0, a2, 0x50
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rsr a0, 208
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s32i a0, a2, 0x54
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rsr a0, DEBUGCAUSE
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s32i a0, a2, 0x5C
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rsr a4, DEBUG_PC
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s32i a4, a2, 0x00
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/*
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* All registers except A2 are intact when we arrive here. The original
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* contents of A2 was save in the EXCSAVE2/DEBUG_EXCSAVE register by
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* _DebugExceptionVector stub. EPC2/DEBUG_PC register contains the
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* original PC and EPC2/DEBUG_PC the original PS register
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*/
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#if GDBSTUB_USE_OWN_STACK
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//Move to our own stack
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movi a1, exceptionStack+255*4
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/* Save all regs to standard exception frame structure XtExcFrame */
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movi a2, gdbstub_regs
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s32i a0, a2, XT_STK_A0 /* save A0 (return address) before we used it */
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s32i a1, a2, XT_STK_A1 /* save A1 (stack pointer) */
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rsr a0, DEBUG_PC /* read original PC from EPC2 and save it */
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s32i a0, a2, XT_STK_PC
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rsr a0, DEBUG_PS /* read original PS from ESP2 and save it */
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s32i a0, a2, XT_STK_PS
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rsr a0, DEBUG_EXCSAVE /* read original A2 from EXCSAVE2 and save it */
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s32i a0, a2, XT_STK_A2
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s32i a3, a2, XT_STK_A3 /* save remaining A registers */
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s32i a4, a2, XT_STK_A4
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s32i a5, a2, XT_STK_A5
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s32i a6, a2, XT_STK_A6
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s32i a7, a2, XT_STK_A7
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s32i a8, a2, XT_STK_A8
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s32i a9, a2, XT_STK_A9
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s32i a10, a2, XT_STK_A10
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s32i a11, a2, XT_STK_A11
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s32i a12, a2, XT_STK_A12
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s32i a13, a2, XT_STK_A13
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s32i a14, a2, XT_STK_A14
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s32i a15, a2, XT_STK_A15
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rsr a0, SAR /* read SAR and save it */
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s32i a0, a2, XT_STK_SAR
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#if XCHAL_HAVE_LOOPS
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rsr a0, lbeg
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s32i a0, a2, XT_STK_LBEG
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rsr a0, lend
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s32i a0, a2, XT_STK_LEND
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rsr a0, lcount
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s32i a0, a2, XT_STK_LCOUNT
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#endif
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//If ICOUNT is -1, disable it by setting it to 0, otherwise we will keep triggering on the same instruction.
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rsr a2, ICOUNT
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movi a3, -1
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bne a2, a3, noIcountReset
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movi a3, 0
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wsr a3, ICOUNT
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#ifdef XT_USE_SWPRI
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rsr a0, vpri
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s32i a0, a2, XT_STK_VPRI
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#endif
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#ifdef XT_USE_OVLY
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rsr a0, ovly
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s32i a0, a2, XT_STK_OVLY
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#endif
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/* Save additional registers required for gdb_stub */
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movi a2, gdbstub_regs + XtExcFrameSize
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rsr a0, LITBASE
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s32i a0, a2, XT_STK_LITBASE
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rsr a0, 176
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s32i a0, a2, XT_STK_SR176
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rsr a0, 208
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s32i a0, a2, XT_STK_SR208
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rsr a0, DEBUGCAUSE
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s32i a0, a2, XT_STK_REASON
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#if GDBSTUB_USE_OWN_STACK
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/* Move to our own stack */
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movi a1, gdbstub_exceptionStack + GDBSTUB_STACK_SIZE - 4
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#endif
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/*
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* If ICOUNT is -1, disable it by setting it to 0, otherwise we will
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* keep triggering on the same instruction.
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*/
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rsr a2, ICOUNT
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movi a3, -1
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bne a2, a3, noIcountReset
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movi a3, 0
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wsr a3, ICOUNT
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noIcountReset:
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rsr a2, ps
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addi a2, a2, -PS_EXCM_MASK
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wsr a2, ps
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rsync
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rsr a2, ps
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addi a2, a2, -PS_EXCM_MASK
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wsr a2, ps
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rsync
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//Call into the C code to do the actual handling.
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call0 gdbstub_handle_debug_exception
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/* Call into the C code to do the actual handling. */
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call0 gdbstub_handle_debug_exception
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DebugExceptionExit:
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rsr a2, ps
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addi a2, a2, PS_EXCM_MASK
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wsr a2, ps
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rsync
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rsr a2, ps
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addi a2, a2, PS_EXCM_MASK
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wsr a2, ps
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rsync
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//Restore registers from the gdbstub_savedRegs struct
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movi a2, gdbstub_savedRegs
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l32i a0, a2, 0x00
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wsr a0, DEBUG_PC
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// l32i a0, a2, 0x54
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// wsr a0, 208
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l32i a0, a2, 0x50
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//wsr a0, 176 //Some versions of gcc do not understand this...
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.byte 0x00, 176, 0x13 //so we hand-assemble the instruction.
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l32i a0, a2, 0x4C
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wsr a0, LITBASE
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l32i a0, a2, 0x08
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wsr a0, SAR
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l32i a15, a2, 0x48
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l32i a14, a2, 0x44
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l32i a13, a2, 0x40
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l32i a12, a2, 0x3c
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l32i a11, a2, 0x38
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l32i a10, a2, 0x34
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l32i a9, a2, 0x30
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l32i a8, a2, 0x2c
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l32i a7, a2, 0x28
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l32i a6, a2, 0x24
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l32i a5, a2, 0x20
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l32i a4, a2, 0x1c
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l32i a3, a2, 0x18
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l32i a0, a2, 0x14
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wsr a0, DEBUG_EXCSAVE //was R2
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l32i a0, a2, 0x04
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wsr a0, DEBUG_PS
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l32i a1, a2, 0x58
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l32i a0, a2, 0x10
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/* Restore registers from the gdbstub_regs struct. */
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//Read back vector-saved a2 value, put back address of this routine.
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movi a2, gdbstub_debug_exception_entry
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xsr a2, DEBUG_EXCSAVE
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movi a2, gdbstub_regs + XtExcFrameSize
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//All done. Return to where we came from.
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rfi XCHAL_DEBUGLEVEL
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#if 0
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/* TODO: check whether it is really necessary to recover SR178 and SR208
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* Some versions of gcc do not understand instruction 'wsr <n>' where n is
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* the decimal number of the special register. A hand-assembled version of
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* instruction would have to be used instead.
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*
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* .byte 0x00, <n>, 0x13
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*
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* However, writing to SR176 or SR208 leads to an IllegalInstruction
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* exception
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*/
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#if GDBSTUB_FREERTOS
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/*
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FreeRTOS exception handling code. For some reason or another, we can't just hook the main exception vector: it
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seems FreeRTOS uses that for something else too (interrupts). FreeRTOS has its own fatal exception handler, and we
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hook that. Unfortunately, that one is called from a few different places (eg directly in the DoubleExceptionVector)
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so the precise location of the original register values are somewhat of a mystery when we arrive here...
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As a 'solution', we'll just decode the most common case of the user_fatal_exception_handler being called from
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the user exception handler vector:
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- excsave1 - orig a0
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- a1: stack frame:
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sf+16: orig a1
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sf+8: ps
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sf+4: epc
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sf+12: orig a0
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sf: magic no?
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*/
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.global gdbstub_handle_user_exception
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.global gdbstub_user_exception_entry
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.align 4
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gdbstub_user_exception_entry:
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//Save all regs to structure
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movi a0, gdbstub_savedRegs
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s32i a1, a0, 0x14 //was a2
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s32i a3, a0, 0x18
|
||||
s32i a4, a0, 0x1c
|
||||
s32i a5, a0, 0x20
|
||||
s32i a6, a0, 0x24
|
||||
s32i a7, a0, 0x28
|
||||
s32i a8, a0, 0x2c
|
||||
s32i a9, a0, 0x30
|
||||
s32i a10, a0, 0x34
|
||||
s32i a11, a0, 0x38
|
||||
s32i a12, a0, 0x3c
|
||||
s32i a13, a0, 0x40
|
||||
s32i a14, a0, 0x44
|
||||
s32i a15, a0, 0x48
|
||||
rsr a2, SAR
|
||||
s32i a2, a0, 0x08
|
||||
rsr a2, LITBASE
|
||||
s32i a2, a0, 0x4C
|
||||
rsr a2, 176
|
||||
s32i a2, a0, 0x50
|
||||
rsr a2, 208
|
||||
s32i a2, a0, 0x54
|
||||
rsr a2, EXCCAUSE
|
||||
s32i a2, a0, 0x5C
|
||||
|
||||
//Get the rest of the regs from the stack struct
|
||||
l32i a3, a1, 12
|
||||
s32i a3, a0, 0x10
|
||||
l32i a3, a1, 16
|
||||
s32i a3, a0, 0x58
|
||||
l32i a3, a1, 8
|
||||
s32i a3, a0, 0x04
|
||||
l32i a3, a1, 4
|
||||
s32i a3, a0, 0x00
|
||||
|
||||
#if GDBSTUB_USE_OWN_STACK
|
||||
movi a1, exceptionStack+255*4
|
||||
l32i a0, a2, XT_STK_SR208
|
||||
wsr a0, 208
|
||||
l32i a0, a2, XT_STK_SR176
|
||||
wsr a0, 176
|
||||
#endif
|
||||
|
||||
rsr a2, ps
|
||||
addi a2, a2, -PS_EXCM_MASK
|
||||
wsr a2, ps
|
||||
rsync
|
||||
l32i a0, a2, XT_STK_LITBASE
|
||||
wsr a0, LITBASE
|
||||
|
||||
call0 gdbstub_handle_user_exception
|
||||
|
||||
UserExceptionExit:
|
||||
|
||||
/*
|
||||
Okay, from here on, it Does Not Work. There's not really any continuing from an exception in the
|
||||
FreeRTOS case; there isn't any effort put in reversing the mess the exception code made yet. Maybe this
|
||||
is still something we need to implement later, if there's any demand for it, or maybe we should modify
|
||||
FreeRTOS to allow this in the future. (Which will then kill backwards compatibility... hmmm.)
|
||||
*/
|
||||
j UserExceptionExit
|
||||
|
||||
|
||||
.global gdbstub_handle_uart_int
|
||||
.global gdbstub_uart_entry
|
||||
.align 4
|
||||
gdbstub_uart_entry:
|
||||
//On entry, the stack frame is at SP+16.
|
||||
//This is a small stub to present that as the first arg to the gdbstub_handle_uart function.
|
||||
movi a2, 16
|
||||
add a2, a2, a1
|
||||
movi a3, gdbstub_handle_uart_int
|
||||
jx a3
|
||||
movi a2, gdbstub_regs
|
||||
|
||||
#ifdef XT_USE_OVLY
|
||||
l32i a0, a2, XT_STK_OVLY
|
||||
wsr a0, ovly
|
||||
#endif
|
||||
|
||||
#ifdef XT_USE_SWPRI
|
||||
l32i a0, a2, XT_STK_VPRI
|
||||
wsr a0, vpri
|
||||
#endif
|
||||
|
||||
#if XCHAL_HAVE_LOOPS
|
||||
l32i a0, a2, XT_STK_LCOUNT
|
||||
wsr a0, lcount
|
||||
l32i a0, a2, XT_STK_LEND
|
||||
wsr a0, lend
|
||||
l32i a0, a2, XT_STK_LBEG
|
||||
wsr a0, lbeg
|
||||
#endif
|
||||
|
||||
l32i a0, a2, XT_STK_SAR
|
||||
wsr a0, sar
|
||||
l32i a15, a2, XT_STK_A15
|
||||
l32i a14, a2, XT_STK_A14
|
||||
l32i a13, a2, XT_STK_A13
|
||||
l32i a12, a2, XT_STK_A12
|
||||
l32i a11, a2, XT_STK_A11
|
||||
l32i a10, a2, XT_STK_A10
|
||||
l32i a9, a2, XT_STK_A9
|
||||
l32i a8, a2, XT_STK_A8
|
||||
l32i a7, a2, XT_STK_A7
|
||||
l32i a6, a2, XT_STK_A6
|
||||
l32i a5, a2, XT_STK_A5
|
||||
l32i a4, a2, XT_STK_A4
|
||||
l32i a3, a2, XT_STK_A3
|
||||
|
||||
l32i a0, a2, XT_STK_A2 /* read original A2 and save it to EXCSAVE2 */
|
||||
wsr a0, DEBUG_EXCSAVE
|
||||
l32i a0, a2, XT_STK_PS /* read original PS and save it to EPS2 */
|
||||
wsr a0, DEBUG_PS
|
||||
l32i a0, a2, XT_STK_PC /* read original PC and save it to EPS2 */
|
||||
wsr a0, DEBUG_PC
|
||||
|
||||
l32i a1, a2, XT_STK_A1 /* restore A1 (stack pointer) */
|
||||
l32i a0, a2, XT_STK_A0 /* restore A0 (return address) */
|
||||
|
||||
/* Read back vector-saved a2 value, put back address of this routine. */
|
||||
movi a2, gdbstub_debug_exception_entry
|
||||
xsr a2, DEBUG_EXCSAVE
|
||||
|
||||
/* All done. Return to where we came from. */
|
||||
rfi XCHAL_DEBUGLEVEL
|
||||
|
||||
|
||||
.global gdbstub_save_extra_sfrs_for_exception
|
||||
.align 4
|
||||
//The Xtensa OS HAL does not save all the special function register things. This bit of assembly
|
||||
//fills the gdbstub_savedRegs struct with them.
|
||||
.global gdbstub_save_extra_sfrs_for_exception
|
||||
.align 4
|
||||
/*
|
||||
* The Xtensa standard exception handlers does not save all the special
|
||||
* function register things. This bit of assembly fills the gdbstub_regs struct
|
||||
* with them.
|
||||
*/
|
||||
gdbstub_save_extra_sfrs_for_exception:
|
||||
movi a2, gdbstub_savedRegs
|
||||
rsr a3, LITBASE
|
||||
s32i a3, a2, 0x4C
|
||||
rsr a3, 176
|
||||
s32i a3, a2, 0x50
|
||||
rsr a3, 208
|
||||
s32i a3, a2, 0x54
|
||||
rsr a3, EXCCAUSE
|
||||
s32i a3, a2, 0x5C
|
||||
ret
|
||||
|
||||
.global gdbstub_init_debug_entry
|
||||
.global _DebugExceptionVector
|
||||
.align 4
|
||||
/* a14-a15 are only saved by standard exception handlers for Windowed ABI */
|
||||
#ifdef __XTENSA_CALL0_ABI__
|
||||
movi a2, gdbstub_regs
|
||||
s32i a14, a2, XT_STK_A14
|
||||
s32i a15, a2, XT_STK_A15
|
||||
#endif
|
||||
|
||||
/* Save additional registers required for gdb_stub */
|
||||
movi a2, gdbstub_regs + XtExcFrameSize
|
||||
rsr a3, LITBASE
|
||||
s32i a3, a2, XT_STK_LITBASE
|
||||
rsr a3, 176
|
||||
s32i a3, a2, XT_STK_SR176
|
||||
rsr a3, 208
|
||||
s32i a3, a2, XT_STK_SR208
|
||||
rsr a3, EXCCAUSE
|
||||
s32i a3, a2, XT_STK_REASON
|
||||
|
||||
ret
|
||||
|
||||
|
||||
.global gdbstub_init_debug_entry
|
||||
.global _DebugExceptionVector
|
||||
.align 4
|
||||
/*
|
||||
* This puts the following 2 instructions into the debug exception vector:
|
||||
* xsr a2, DEBUG_EXCSAVE
|
||||
* jx a2
|
||||
*/
|
||||
gdbstub_init_debug_entry:
|
||||
//This puts the following 2 instructions into the debug exception vector:
|
||||
// xsr a2, DEBUG_EXCSAVE
|
||||
// jx a2
|
||||
movi a2, _DebugExceptionVector
|
||||
movi a3, 0xa061d220
|
||||
s32i a3, a2, 0
|
||||
movi a3, 0x00000002
|
||||
s32i a3, a2, 4
|
||||
|
||||
//Tell the just-installed debug vector where to go.
|
||||
movi a2, gdbstub_debug_exception_entry
|
||||
wsr a2, DEBUG_EXCSAVE
|
||||
movi a2, _DebugExceptionVector
|
||||
movi a3, 0xa061d220
|
||||
s32i a3, a2, 0
|
||||
movi a3, 0x00000002
|
||||
s32i a3, a2, 4
|
||||
|
||||
ret
|
||||
/* Tell the just-installed debug vector where to go. */
|
||||
movi a2, gdbstub_debug_exception_entry
|
||||
wsr a2, DEBUG_EXCSAVE
|
||||
|
||||
ret
|
||||
|
||||
|
||||
//Set up ICOUNT register to step one single instruction
|
||||
.global gdbstub_icount_ena_single_step
|
||||
.align 4
|
||||
.global gdbstub_icount_ena_single_step
|
||||
.align 4
|
||||
/*
|
||||
* Set up ICOUNT register to step one single instruction
|
||||
*/
|
||||
gdbstub_icount_ena_single_step:
|
||||
movi a3, XCHAL_DEBUGLEVEL //Only count steps in non-debug mode
|
||||
movi a2, -2
|
||||
wsr a3, ICOUNTLEVEL
|
||||
wsr a2, ICOUNT
|
||||
isync
|
||||
ret
|
||||
movi a3, XCHAL_DEBUGLEVEL /* Only count steps in non-debug mode */
|
||||
movi a2, -2
|
||||
wsr a3, ICOUNTLEVEL
|
||||
wsr a2, ICOUNT
|
||||
isync
|
||||
ret
|
||||
|
||||
/*
|
||||
* The following routines all assume that only one breakpoint and watchpoint
|
||||
* is available, which is the case for the ESP8266 Xtensa core.
|
||||
*/
|
||||
|
||||
//These routines all assume only one breakpoint and watchpoint is available, which
|
||||
//is the case for the ESP8266 Xtensa core.
|
||||
|
||||
|
||||
.global gdbstub_set_hw_breakpoint
|
||||
.global gdbstub_set_hw_breakpoint
|
||||
.align 4
|
||||
/*
|
||||
* set an hw breakpoint
|
||||
* paramters: a2 = addr, a3 = len (unused here)
|
||||
*/
|
||||
gdbstub_set_hw_breakpoint:
|
||||
//a2 - addr, a3 - len (unused here)
|
||||
rsr a4, IBREAKENABLE
|
||||
bbsi a4, 0, return_w_error
|
||||
wsr a2, IBREAKA
|
||||
movi a2, 1
|
||||
wsr a2, IBREAKENABLE
|
||||
isync
|
||||
movi a2, 1
|
||||
ret
|
||||
|
||||
.global gdbstub_del_hw_breakpoint
|
||||
call0 40000080
|
||||
rsr a4, IBREAKENABLE
|
||||
bbsi a4, 0, return_w_error
|
||||
wsr a2, IBREAKA
|
||||
movi a2, 1
|
||||
wsr a2, IBREAKENABLE
|
||||
isync
|
||||
movi a2, 1
|
||||
ret
|
||||
|
||||
|
||||
.global gdbstub_del_hw_breakpoint
|
||||
.align 4
|
||||
/*
|
||||
* delete an hw breakpoint
|
||||
* paramters: a2 = addr
|
||||
*/
|
||||
gdbstub_del_hw_breakpoint:
|
||||
//a2 - addr
|
||||
rsr a5, IBREAKENABLE
|
||||
bbci a5, 0, return_w_error
|
||||
rsr a3, IBREAKA
|
||||
bne a3, a2, return_w_error
|
||||
movi a2,0
|
||||
wsr a2, IBREAKENABLE
|
||||
isync
|
||||
movi a2, 1
|
||||
ret
|
||||
|
||||
.global gdbstub_set_hw_watchpoint
|
||||
//a2 - addr, a3 - mask, a4 - type (1=read, 2=write, 3=access)
|
||||
rsr a5, IBREAKENABLE
|
||||
bbci a5, 0, return_w_error
|
||||
rsr a3, IBREAKA
|
||||
bne a3, a2, return_w_error
|
||||
movi a2,0
|
||||
wsr a2, IBREAKENABLE
|
||||
isync
|
||||
movi a2, 1
|
||||
ret
|
||||
|
||||
|
||||
.global gdbstub_set_hw_watchpoint
|
||||
.align 4
|
||||
/*
|
||||
* set an hw breakpoint
|
||||
* paramters: a2 = addr, a3 = mask, a4 = type (1=read, 2=write, 3=access)
|
||||
*/
|
||||
gdbstub_set_hw_watchpoint:
|
||||
//Check if any of the masked address bits are set. If so, that is an error.
|
||||
movi a5,0x0000003F
|
||||
xor a5, a5, a3
|
||||
bany a2, a5, return_w_error
|
||||
//Check if watchpoint already is set
|
||||
rsr a5, DBREAKC
|
||||
movi a6, 0xC0000000
|
||||
bany a6, a5, return_w_error
|
||||
//Set watchpoint
|
||||
wsr a2, DBREAKA
|
||||
|
||||
//Combine type and mask
|
||||
movi a6, 0x3F
|
||||
and a3, a3, a6
|
||||
slli a4, a4, 30
|
||||
or a3, a3, a4
|
||||
wsr a3, DBREAKC
|
||||
/* Check if any of the masked address bits are set. If so, that is an error. */
|
||||
movi a5,0x0000003F
|
||||
xor a5, a5, a3
|
||||
bany a2, a5, return_w_error
|
||||
|
||||
// movi a2, 1
|
||||
mov a2, a3
|
||||
isync
|
||||
ret
|
||||
/* Check if watchpoint already is set */
|
||||
rsr a5, DBREAKC
|
||||
movi a6, 0xC0000000
|
||||
bany a6, a5, return_w_error
|
||||
|
||||
/* Set watchpoint */
|
||||
wsr a2, DBREAKA
|
||||
|
||||
/* Combine type and mask */
|
||||
movi a6, 0x3F
|
||||
and a3, a3, a6
|
||||
slli a4, a4, 30
|
||||
or a3, a3, a4
|
||||
wsr a3, DBREAKC
|
||||
|
||||
mov a2, a3
|
||||
isync
|
||||
ret
|
||||
|
||||
|
||||
.global gdbstub_del_hw_watchpoint
|
||||
//a2 - addr
|
||||
.global gdbstub_del_hw_watchpoint
|
||||
.align 4
|
||||
/*
|
||||
* delete a hw breakpoint
|
||||
* paramters: a2 = addr
|
||||
*/
|
||||
gdbstub_del_hw_watchpoint:
|
||||
//See if the address matches
|
||||
rsr a3, DBREAKA
|
||||
bne a3, a2, return_w_error
|
||||
//See if the bp actually is set
|
||||
rsr a3, DBREAKC
|
||||
movi a2, 0xC0000000
|
||||
bnone a3, a2, return_w_error
|
||||
//Disable bp
|
||||
movi a2,0
|
||||
wsr a2,DBREAKC
|
||||
movi a2,1
|
||||
isync
|
||||
ret
|
||||
/* see if the address matches */
|
||||
rsr a3, DBREAKA
|
||||
bne a3, a2, return_w_error
|
||||
/* see if the bp actually is set */
|
||||
rsr a3, DBREAKC
|
||||
movi a2, 0xC0000000
|
||||
bnone a3, a2, return_w_error
|
||||
/* Disable bp */
|
||||
movi a2,0
|
||||
wsr a2,DBREAKC
|
||||
movi a2,1
|
||||
isync
|
||||
ret
|
||||
|
||||
return_w_error:
|
||||
movi a2, 0
|
||||
ret
|
||||
movi a2, 0
|
||||
ret
|
||||
|
||||
|
||||
//Breakpoint, with an attempt at a functional function prologue and epilogue...
|
||||
.global gdbstub_do_break_breakpoint_addr
|
||||
.global gdbstub_do_break
|
||||
.align 4
|
||||
.global gdbstub_do_break_breakpoint_addr
|
||||
.global gdbstub_do_break
|
||||
.align 4
|
||||
/*
|
||||
* Breakpoint, with an attempt at a functional function prologue and epilogue...
|
||||
*/
|
||||
gdbstub_do_break:
|
||||
addi a1, a1, -16
|
||||
s32i a15, a1, 12
|
||||
mov a15, a1
|
||||
addi a1, a1, -16
|
||||
s32i a15, a1, 12
|
||||
mov a15, a1
|
||||
|
||||
gdbstub_do_break_breakpoint_addr:
|
||||
break 0,0
|
||||
break 0,0
|
||||
|
||||
mov a1, a15
|
||||
l32i a15, a1, 12
|
||||
addi a1, a1, 16
|
||||
ret
|
||||
mov a1, a15
|
||||
l32i a15, a1, 12
|
||||
addi a1, a1, 16
|
||||
ret
|
||||
|
||||
@ -6,7 +6,6 @@ extern "C" {
|
||||
#endif
|
||||
|
||||
void gdbstub_init_debug_entry(void);
|
||||
void gdbstub_do_break(void);
|
||||
void gdbstub_icount_ena_single_step(void);
|
||||
void gdbstub_save_extra_sfrs_for_exception(void);
|
||||
void gdbstub_uart_entry(void);
|
||||
|
||||
25
cpu/esp8266/vendor/esp-gdbstub/gdbstub-exc.h
vendored
Normal file
25
cpu/esp8266/vendor/esp-gdbstub/gdbstub-exc.h
vendored
Normal file
@ -0,0 +1,25 @@
|
||||
#ifndef GDBSTUB_EXC_H
|
||||
#define GDBSTUB_EXC_H
|
||||
|
||||
#include "xtensa/xtensa_context.h"
|
||||
|
||||
/**
|
||||
* @brief Structure of additional registers in excpeption fram as used by GDB
|
||||
*/
|
||||
STRUCT_BEGIN
|
||||
STRUCT_FIELD (long, 4, XT_STK_LITBASE, litbase)
|
||||
STRUCT_FIELD (long, 4, XT_STK_SR176, sr176)
|
||||
STRUCT_FIELD (long, 4, XT_STK_SR208, sr208)
|
||||
/*
|
||||
* 'reason' is abused for both the debug and the exception vector:
|
||||
* if bit 7 is set, this contains an exception reason, otherwise it
|
||||
* contains a debug vector bitmap.
|
||||
*/
|
||||
STRUCT_FIELD (long, 4, XT_STK_REASON, reason)
|
||||
STRUCT_END(XtExcFrameGdb)
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#endif /* GDBSTUB_EXC_H */
|
||||
1025
cpu/esp8266/vendor/esp-gdbstub/gdbstub.c
vendored
1025
cpu/esp8266/vendor/esp-gdbstub/gdbstub.c
vendored
File diff suppressed because it is too large
Load Diff
1
cpu/esp8266/vendor/esp-gdbstub/gdbstub.h
vendored
1
cpu/esp8266/vendor/esp-gdbstub/gdbstub.h
vendored
@ -6,6 +6,7 @@ extern "C" {
|
||||
#endif
|
||||
|
||||
void gdbstub_init(void);
|
||||
void gdbstub_do_break(void);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
|
||||
2
cpu/esp8266/vendor/esp/README.md
vendored
2
cpu/esp8266/vendor/esp/README.md
vendored
@ -1,3 +1,3 @@
|
||||
All files in this directory are part of [esp-open-rtos](https://github.com/SuperHouse/esp-open-rtos.git). They are under the copyright of their respective owners. Please note the copyright notice in these files.
|
||||
All files in this directory are part of [esp-open-rtos](https://github.com/SuperHouse/esp-open-rtos.git). They are under the copyright of their respective owners.
|
||||
|
||||
All of these files are BSD Licensed as described in the file [LICENSE](https://github.com/SuperHouse/esp-open-rtos/blob/master/LICENSE).
|
||||
|
||||
2
cpu/esp8266/vendor/esp/common_macros.h
vendored
2
cpu/esp8266/vendor/esp/common_macros.h
vendored
@ -33,7 +33,7 @@ extern "C" {
|
||||
|
||||
#define UNUSED __attributed((unused))
|
||||
|
||||
#ifndef BIT
|
||||
#if defined(MCU_ESP8266) && !defined(BIT)
|
||||
#define BIT(X) (1<<(X))
|
||||
#endif
|
||||
|
||||
|
||||
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Reference in New Issue
Block a user