gdb/testsuite: add simesp board

2025-05-17 15:26:36 +08:00 · 2021-11-30 19:42:48 +03:00
parent c32361e9c2
commit 01f46c867e
10 changed files with 581 additions and 0 deletions
--- a/gdb/testsuite/boards/simesp.exp
+++ b/gdb/testsuite/boards/simesp.exp
@ -0,0 +1,138 @@
+set simesp_spawn_id ""
+set simesp_last_load_file ""
+
+if { [info exists ::env(ESP_BIN_GEN_PATH)] } {
+    set esp_bin_gen_path $::env(ESP_BIN_GEN_PATH)
+} else {
+    set esp_bin_gen_path "$::env(PWD)/esp_bin_generator"
+}
+
+if { [info exists ::env(SIMESP_PATH)] } {
+    set simesp_path $::env(SIMESP_PATH)
+} else {
+    set simesp_path "qemu-system-xtensa"
+}
+
+if { [info exists ::env(SIMESP_CPU)] } {
+    set simesp_cpu $::env(SIMESP_CPU)
+} else {
+    set simesp_cpu "esp32"
+}
+
+set_board_info compiler "xtensa-${simesp_cpu}-elf-gcc"
+set_board_info c++compiler "xtensa-${simesp_cpu}-elf-g++"
+
+set_board_info cflags  "-mlongcalls"
+set_board_info ldflags "--specs=sim.elf.specs --specs=sys.qemu.specs -Wl,-z,noexecstack"
+
+set_board_info use_gdb_stub 1
+set_board_info gdb_protocol "remote"
+set_board_info gdb,do_reload_on_run 1
+set_board_info noargs 1
+set_board_info gdb,noinferiorio 1
+set_board_info gdb,nofileio 1
+set_board_info gdb,no_long_long 1
+set_board_info gdb,noresults 1
+set_board_info gdb,nosignals 1
+set_board_info gdb,skip_huge_test 1
+set_board_info gdb,start_symbol 0x40000400
+
+proc init_simulator { file } {
+    global simesp_last_load_file
+    global simesp_spawn_id
+    global simesp_cpu
+    global simesp_path
+    global timeout
+
+    if { $file == "" } {
+	set file $simesp_last_load_file
+    } else {
+	set simesp_last_load_file $file
+    }
+
+    gdb_file_cmd $file
+
+    # Close any previous simesp instance.
+    if { $simesp_spawn_id != "" } {
+	verbose -log "simesp: closing previous spawn id $simesp_spawn_id"
+	if [catch { close -i $simesp_spawn_id } != 0] {
+	    warning "simesp: failed to close connection to previous simesp instance"
+	}
+
+	wait -i $simesp_spawn_id
+	set simesp_spawn_id ""
+    }
+
+    set cmd "spawn -noecho ${simesp_path} -nographic -monitor null -cpu ${simesp_cpu} -M ${simesp_cpu} -m 4M -S -s -kernel ${file} -d trace:gdbstub_op_start -semihosting"
+    verbose -log "Spawning simesp (timeout $timeout): $cmd"
+    for {set i 0} {$i < 10} {incr i} {
+        # Run simesp.
+        verbose -log "try to execute simesp: $i"
+        eval $cmd
+        set simesp_spawn_id $spawn_id
+        expect {
+	    -i $simesp_spawn_id -re "::1234" {}
+	    timeout {
+	        verbose -log "simesp: timeout, closing simesp spawn id"
+	        close -i $simesp_spawn_id
+	        verbose -log "simesp: timeout, waiting for simesp process exit"
+	        wait -i $simesp_spawn_id
+	        set simesp_spawn_id ""
+	        verbose -log "unable to start simesp: timeout"
+	        continue
+	    }
+	    eof {
+	        verbose -log "simesp: eof, waiting for simesp process exit"
+	        wait -i $simesp_spawn_id
+	        set simesp_spawn_id ""
+	        verbose -log "unable to start simesp: eof"
+	        continue
+	    }
+        }
+        verbose -log "simesp: executed ok"
+        break
+    }
+    verbose -log "simesp: simesp spawned with spawn id $simesp_spawn_id, pid [exp_pid $simesp_spawn_id]"
+    return 0
+}
+
+proc connect_to_simesp {} {
+    global simesp_spawn_id
+    global gdb_prompt
+
+    verbose -log "simesp: connecting to remote ..."
+
+    # Connect to simesp.
+    send_gdb "target remote :1234\n"
+    gdb_expect {
+	-re ".*Remote debugging using :1234.*\[\r\n\]+$gdb_prompt $" {}
+	-re "Kill the program being debugged? (y or n)" {
+	    send_gdb "y\n"
+	    connect_to_simesp
+	}
+	timeout {
+	    verbose -log "simesp: unable to connect to simesp, closing simesp spawn id"
+	    close -i $simesp_spawn_id
+	    verbose -log "simesp: unable to connect to simesp, waiting for simesp process exit"
+	    wait -i $simesp_spawn_id
+	    set simesp_spawn_id ""
+	    error "unable to connect to simesp stub"
+	}
+    }
+    verbose -log "simesp: connected"
+}
+
+proc gdb_load { file } {
+    return [ init_simulator $file ]
+}
+
+proc gdb_run_cmd  { {inferior_args {}} } {
+    init_simulator $inferior_args
+    connect_to_simesp
+    send_gdb "continue\n"
+    gdb_expect 60 {
+        -re "Continu\[^\r\n\]*\[\r\n\]" {}
+        default {}
+    }
+    return 0
+}
--- a/gdb/testsuite/esp_bin_generator/.gitignore
+++ b/gdb/testsuite/esp_bin_generator/.gitignore
@ -0,0 +1,5 @@
+*.bin
+*.elf
+src/*.o
+*.a
+*.o
--- a/gdb/testsuite/esp_bin_generator/Makefile
+++ b/gdb/testsuite/esp_bin_generator/Makefile
@ -0,0 +1,49 @@
+XTENSA_TARGET   ?=  esp32
+PREFIX          :=  xtensa-$(XTENSA_TARGET)-elf-
+CC              :=  $(PREFIX)gcc
+AR              :=  $(PREFIX)ar
+
+SOURCE_DIR	?=  ./src
+
+CFLAGS          :=  -mlongcalls \
+                    -Wall \
+                    -Wno-unused \
+                    -O2 -g3 \
+                    -Wall -Wno-main \
+                    -mtext-section-literals
+
+LDFLAGS         :=  -mlongcalls \
+                    --specs=nano.specs \
+                    --specs=nosys.specs \
+                    -g \
+                    -lc \
+                    -Tesp32.rom.api.ld \
+                    -Tesp32.rom.libgcc.ld \
+                    -Tesp32.ld \
+                    -Telf32xtensa.ld \
+                    -Wl,--undefine=include_syscalls \
+                    -Wl,--undefine=entry \
+                    -Wl,--entry=entry
+
+COMPILE_C       = $(CC) -c $(CFLAGS) -o $@
+LINK            = $(CC) $(LDFLAGS) -o
+
+APP             = app
+
+LIBESP = lib$(XTENSA_TARGET).a
+
+all: $(LIBESP)
+
+%.o: %.c
+	$(COMPILE_C) $<
+
+$(LIBESP): $(patsubst %.c,%.o,$(wildcard $(SOURCE_DIR)/*.c))
+	$(AR) rcs $@ $^
+
+$(APP): $(LIBESP) main.o
+	$(LINK) $(APP).elf $^ $(LIBESP)
+	esptool.py --chip esp32 elf2image -o $(APP).bin $(APP).elf
+	esptool.py --chip=esp32 merge_bin --fill-flash-size 4MB -o $(APP)4m.bin 0x1000 $(APP).bin
+
+clean:
+	rm -f *.a *.o *.bin *.elf $(SOURCE_DIR)/*.o
--- a/gdb/testsuite/esp_bin_generator/elf32xtensa.ld
+++ b/gdb/testsuite/esp_bin_generator/elf32xtensa.ld
@ -0,0 +1,200 @@
+/* Default linker script, for normal executables */
+/* Copyright (C) 2014-2018 Free Software Foundation, Inc.
+   Copying and distribution of this script, with or without modification,
+   are permitted in any medium without royalty provided the copyright
+   notice and this notice are preserved.  */
+ENTRY(_start)
+SEARCH_DIR("=/builds/idf/crosstool-NG/builds/xtensa-esp32-elf/xtensa-esp32-elf/lib"); SEARCH_DIR("=/usr/local/lib"); SEARCH_DIR("=/lib"); SEARCH_DIR("=/usr/lib");
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  PROVIDE (__executable_start = SEGMENT_START("text-segment", 0x10000)); . = SEGMENT_START("text-segment", 0x10000) + SIZEOF_HEADERS;
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+    *(.got.plt* .plt*)
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+    KEEP (*(.fini.literal))
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+  /* Exception handling  */
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+  .preinit_array     :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  }
+  .init_array     :
+  {
+     PROVIDE_HIDDEN (__init_array_start = .);
+     KEEP (*(SORT(.init_array.*)))
+     KEEP (*(.init_array))
+     PROVIDE_HIDDEN (__init_array_end = .);
+  }
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+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  }
+  .ctors          :
+  {
+    /* gcc uses crtbegin.o to find the start of
+       the constructors, so we make sure it is
+       first.  Because this is a wildcard, it
+       doesn't matter if the user does not
+       actually link against crtbegin.o; the
+       linker won't look for a file to match a
+       wildcard.  The wildcard also means that it
+       doesn't matter which directory crtbegin.o
+       is in.  */
+    KEEP (*crtbegin.o(.ctors))
+    KEEP (*crtbegin?.o(.ctors))
+    /* We don't want to include the .ctor section from
+       the crtend.o file until after the sorted ctors.
+       The .ctor section from the crtend file contains the
+       end of ctors marker and it must be last */
+    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+  }
+  .dtors          :
+  {
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*crtbegin?.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+  }
+  .jcr            : { KEEP (*(.jcr)) }
+  .data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro .data.rel.ro.* .gnu.linkonce.d.rel.ro.*) }
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+    *(.data .data.* .gnu.linkonce.d.*)
+    SORT(CONSTRUCTORS)
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+  }
+  _edata = .; PROVIDE (edata = .);
+  __bss_start = .;
+  .bss            :
+  {
+   *(.dynbss)
+   *(.bss .bss.* .gnu.linkonce.b.*)
+   *(COMMON)
+   /* Align here to ensure that the .bss section occupies space up to
+      _end.  Align after .bss to ensure correct alignment even if the
+      .bss section disappears because there are no input sections.
+      FIXME: Why do we need it? When there is no .bss section, we don't
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+   . = ALIGN(. != 0 ? 32 / 8 : 1);
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+  . = ALIGN(32 / 8);
+  . = ALIGN(32 / 8);
+  _end = .; PROVIDE (end = .);
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+  /* Stabs debugging sections.  */
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+  .stab.indexstr 0 : { *(.stab.indexstr) }
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+  /* DWARF debug sections.
+     Symbols in the DWARF debugging sections are relative to the beginning
+     of the section so we begin them at 0.  */
+  /* DWARF 1 */
+  .debug          0 : { *(.debug) }
+  .line           0 : { *(.line) }
+  /* GNU DWARF 1 extensions */
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+  /* DWARF 1.1 and DWARF 2 */
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+  .debug_pubnames 0 : { *(.debug_pubnames) }
+  /* DWARF 2 */
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+  .debug_abbrev   0 : { *(.debug_abbrev) }
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+  .debug_weaknames 0 : { *(.debug_weaknames) }
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+  /* DWARF 3 */
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+  /* DWARF Extension.  */
+  .debug_macro    0 : { *(.debug_macro) }
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+  .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
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+  /DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink)  *(.gnu.lto_*) }
+}
+
--- a/gdb/testsuite/esp_bin_generator/esp32.ld
+++ b/gdb/testsuite/esp_bin_generator/esp32.ld
@ -0,0 +1,5 @@
+MEMORY
+{
+  iram0_0_seg (x) :                 org = 0x40080000, len = 0x20000
+  dram0_0_seg (rw) :                org = 0x3FFB0000, len = 0x2c200
+}
--- a/gdb/testsuite/esp_bin_generator/esp32.rom.api.ld
+++ b/gdb/testsuite/esp_bin_generator/esp32.rom.api.ld
@ -0,0 +1,2 @@
+PROVIDE ( ets_write_char_uart = 0x40007cf8 );
+PROVIDE ( ets_delay_us = 0x40008534 );
--- a/gdb/testsuite/esp_bin_generator/esp32.rom.libgcc.ld
+++ b/gdb/testsuite/esp_bin_generator/esp32.rom.libgcc.ld
@ -0,0 +1,94 @@
+/* Unlike other ROM functions which are exported using PROVIDE, which declares
+   weak symbols, these libgcc functions are exported using assignment,
+   which declares strong symbols. This is done so that ROM functions are always
+   used instead of the ones provided by libgcc.a.
+*/
+
+__absvdi2 = 0x4006387c;
+__absvsi2 = 0x40063868;
+__adddf3 = 0x40002590;
+__addsf3 = 0x400020e8;
+__addvdi3 = 0x40002cbc;
+__addvsi3 = 0x40002c98;
+__ashldi3 = 0x4000c818;
+__ashrdi3 = 0x4000c830;
+__bswapdi2 = 0x40064b08;
+__bswapsi2 = 0x40064ae0;
+__clrsbdi2 = 0x40064b7c;
+__clrsbsi2 = 0x40064b64;
+__clzdi2 = 0x4000ca50;
+__clzsi2 = 0x4000c7e8;
+__cmpdi2 = 0x40063820;
+__ctzdi2 = 0x4000ca64;
+__ctzsi2 = 0x4000c7f0;
+__divdc3 = 0x400645a4;
+__divdf3 = 0x40002954;
+__divdi3 = 0x4000ca84;
+__divsi3 = 0x4000c7b8;
+__eqdf2 = 0x400636a8;
+__eqsf2 = 0x40063374;
+__extendsfdf2 = 0x40002c34;
+__ffsdi2 = 0x4000ca2c;
+__ffssi2 = 0x4000c804;
+__fixdfdi = 0x40002ac4;
+__fixdfsi = 0x40002a78;
+__fixsfdi = 0x4000244c;
+__fixsfsi = 0x4000240c;
+__fixunsdfsi = 0x40002b30;
+__fixunssfdi = 0x40002504;
+__fixunssfsi = 0x400024ac;
+__floatdidf = 0x4000c988;
+__floatdisf = 0x4000c8c0;
+__floatsidf = 0x4000c944;
+__floatsisf = 0x4000c870;
+__floatundidf = 0x4000c978;
+__floatundisf = 0x4000c8b0;
+__floatunsidf = 0x4000c938;
+__floatunsisf = 0x4000c864;
+__gcc_bcmp = 0x40064a70;
+__gedf2 = 0x40063768;
+__gesf2 = 0x4006340c;
+__gtdf2 = 0x400636dc;
+__gtsf2 = 0x400633a0;
+__ledf2 = 0x40063704;
+__lesf2 = 0x400633c0;
+__lshrdi3 = 0x4000c84c;
+__ltdf2 = 0x40063790;
+__ltsf2 = 0x4006342c;
+__moddi3 = 0x4000cd4c;
+__modsi3 = 0x4000c7c0;
+__muldc3 = 0x40063c90;
+__muldf3 = 0x4006358c;
+__muldi3 = 0x4000c9fc;
+__mulsf3 = 0x400632c8;
+__mulsi3 = 0x4000c7b0;
+__mulvdi3 = 0x40002d78;
+__mulvsi3 = 0x40002d60;
+__nedf2 = 0x400636a8;
+__negdf2 = 0x400634a0;
+__negdi2 = 0x4000ca14;
+__negsf2 = 0x400020c0;
+__negvdi2 = 0x40002e98;
+__negvsi2 = 0x40002e78;
+__nesf2 = 0x40063374;
+__nsau_data = 0x3ff96544;
+__paritysi2 = 0x40002f3c;
+__popcount_tab = 0x3ff96544;
+__popcountdi2 = 0x40002ef8;
+__popcountsi2 = 0x40002ed0;
+__powidf2 = 0x400638e4;
+__subdf3 = 0x400026e4;
+__subsf3 = 0x400021d0;
+__subvdi3 = 0x40002d20;
+__subvsi3 = 0x40002cf8;
+__truncdfsf2 = 0x40002b90;
+__ucmpdi2 = 0x40063840;
+__udiv_w_sdiv = 0x40064bec;
+__udivdi3 = 0x4000cff8;
+__udivmoddi4 = 0x40064bf4;
+__udivsi3 = 0x4000c7c8;
+__umoddi3 = 0x4000d280;
+__umodsi3 = 0x4000c7d0;
+__umulsidi3 = 0x4000c7d8;
+__unorddf2 = 0x400637f4;
+__unordsf2 = 0x40063478;
--- a/gdb/testsuite/esp_bin_generator/main.c
+++ b/gdb/testsuite/esp_bin_generator/main.c
@ -0,0 +1,9 @@
+#include <stdio.h>
+
+int main() {
+        while(1)
+	{
+	    printf("TEST\n");
+	}
+	return 0;
+}
--- a/gdb/testsuite/esp_bin_generator/src/entry.c
+++ b/gdb/testsuite/esp_bin_generator/src/entry.c
@ -0,0 +1,35 @@
+#include <string.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <setjmp.h>
+#include <stdlib.h>
+
+extern char _end;
+extern char __bss_start;
+
+//extern int main(int argc, const char** argv);
+extern void syscalls_init(void);
+extern void ets_delay_us(uint32_t us);
+
+void entry()
+{
+    /* give us a bit of time to connect with miniterm after esptool.py load_ram is done */
+    ets_delay_us(4000000);
+
+    /* try to re-initialize everything */
+    memset(&__bss_start, 0, &_end - &__bss_start);
+    syscalls_init();
+
+    main();
+    exit(0);
+}
+
+void usleep(uint32_t us)
+{
+    ets_delay_us(us);
+}
+
+void sleep(uint32_t s)
+{
+    ets_delay_us(s*1000000);
+}
--- a/gdb/testsuite/esp_bin_generator/src/syscalls.c
+++ b/gdb/testsuite/esp_bin_generator/src/syscalls.c
@ -0,0 +1,44 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/reent.h>
+
+// #include "uart_reg.h"
+
+// #define UART_NUM 0
+
+void ets_write_char_uart(char c);
+
+ssize_t _write_r(void* reent, int fildes, const void *buf, size_t nbyte)
+{
+    const uint8_t* cbuf = (const uint8_t*) buf;
+    for (size_t i = 0; i < nbyte; ++i) {
+        ets_write_char_uart(cbuf[i]);
+        if (cbuf[i] == '\r') {
+            ets_write_char_uart('\n');
+        }
+    }
+    return nbyte;
+}
+
+int signal(int sig, void (*func)(void))
+{
+    return 0;
+}
+
+static struct _reent s_reent;
+
+struct _reent* __getreent(void) {
+    return _GLOBAL_REENT;
+}
+
+void syscalls_init(void)
+{
+    _GLOBAL_REENT = &s_reent;
+    _REENT_INIT_PTR(&s_reent);
+}
+
+/* this is a hook used to force linking this file */
+void include_syscalls(void)
+{
+}
+