diff options
Diffstat (limited to 'meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gdb/files/0006-Patch-microblaze-Add-initial-port-of-linux-gdbserver.patch')
-rw-r--r-- | meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gdb/files/0006-Patch-microblaze-Add-initial-port-of-linux-gdbserver.patch | 553 |
1 files changed, 0 insertions, 553 deletions
diff --git a/meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gdb/files/0006-Patch-microblaze-Add-initial-port-of-linux-gdbserver.patch b/meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gdb/files/0006-Patch-microblaze-Add-initial-port-of-linux-gdbserver.patch deleted file mode 100644 index cb2eec180..000000000 --- a/meta-xilinx/meta-xilinx-bsp/recipes-microblaze/gdb/files/0006-Patch-microblaze-Add-initial-port-of-linux-gdbserver.patch +++ /dev/null @@ -1,553 +0,0 @@ -From 2112c9ded01ddd08f0e31e5ce23eecac6c04e8c4 Mon Sep 17 00:00:00 2001 -From: David Holsgrove <david.holsgrove@petalogix.com> -Date: Mon, 6 Feb 2012 10:28:29 +1000 -Subject: [PATCH 06/16] [Patch, microblaze]: Add initial port of linux - gdbserver - -add gdb_proc_service_h to gdbserver microblaze-linux - -gdbserver needs to initialise the microblaze registers - -other archs use this step to run a *_arch_setup() to carry out all -architecture specific setup - may need to add in future - - * add linux-ptrace.o to gdbserver configure - * gdb/configure.tgt: Set build_gdbserver=yes - * Update breakpoint opcode - * fix segfault on connecting gdbserver - * add microblaze_linux_memory_remove_breakpoint - * add set_solib_svr4_fetch_link_map_offsets - * add set_gdbarch_fetch_tls_load_module_address - * Force reading of r0 as 0, prevent stores - -Signed-off-by: David Holsgrove <david.holsgrove@petalogix.com> -Signed-off-by: Nathan Rossi <nathan.rossi@petalogix.com> -Upstream-Status: Pending ---- - gdb/configure.host | 3 + - gdb/configure.tgt | 1 + - gdb/gdbserver/Makefile.in | 4 + - gdb/gdbserver/configure.srv | 6 + - gdb/gdbserver/linux-microblaze-low.c | 228 +++++++++++++++++++++++++++++++++++ - gdb/microblaze-linux-tdep.c | 25 +++- - gdb/microblaze-tdep.c | 45 ++++++- - gdb/microblaze-tdep.h | 3 +- - gdb/regformats/reg-microblaze.dat | 39 ++++++ - 9 files changed, 348 insertions(+), 6 deletions(-) - create mode 100644 gdb/gdbserver/linux-microblaze-low.c - create mode 100644 gdb/regformats/reg-microblaze.dat - -diff --git a/gdb/configure.host b/gdb/configure.host -index 15a8288..76cc5fe 100644 ---- a/gdb/configure.host -+++ b/gdb/configure.host -@@ -59,6 +59,7 @@ i[34567]86*) gdb_host_cpu=i386 ;; - m68*) gdb_host_cpu=m68k ;; - m88*) gdb_host_cpu=m88k ;; - mips*) gdb_host_cpu=mips ;; -+microblaze*) gdb_host_cpu=microblaze ;; - powerpc* | rs6000) gdb_host_cpu=powerpc ;; - sparcv9 | sparc64) gdb_host_cpu=sparc ;; - s390*) gdb_host_cpu=s390 ;; -@@ -133,6 +134,8 @@ mips*-*-netbsd* | mips*-*-knetbsd*-gnu) - gdb_host=nbsd ;; - mips64*-*-openbsd*) gdb_host=obsd64 ;; - -+microblaze*-*linux*) gdb_host=linux ;; -+ - powerpc-*-aix* | rs6000-*-* | powerpc64-*-aix*) - gdb_host=aix ;; - powerpc*-*-freebsd*) gdb_host=fbsd ;; -diff --git a/gdb/configure.tgt b/gdb/configure.tgt -index 9297c56..3a7951a 100644 ---- a/gdb/configure.tgt -+++ b/gdb/configure.tgt -@@ -343,6 +343,7 @@ microblaze*-linux-*|microblaze*-*-linux*) - gdb_target_obs="microblaze-tdep.o microblaze-linux-tdep.o microblaze-rom.o glibc-tdep.o \ - monitor.o dsrec.o solib-svr4.o symfile-mem.o linux-tdep.o" - gdb_sim=../sim/microblaze/libsim.a -+ build_gdbserver=yes - ;; - microblaze*-*-*) - # Target: Xilinx MicroBlaze running standalone -diff --git a/gdb/gdbserver/Makefile.in b/gdb/gdbserver/Makefile.in -index f773fa2..a11ace1 100644 ---- a/gdb/gdbserver/Makefile.in -+++ b/gdb/gdbserver/Makefile.in -@@ -148,6 +148,7 @@ SFILES= $(srcdir)/gdbreplay.c $(srcdir)/inferiors.c $(srcdir)/dll.c \ - $(srcdir)/linux-ia64-low.c $(srcdir)/linux-low.c \ - $(srcdir)/linux-m32r-low.c \ - $(srcdir)/linux-m68k-low.c $(srcdir)/linux-mips-low.c \ -+ $(srcdir)/linux-microblaze-low.c \ - $(srcdir)/linux-nios2-low.c \ - $(srcdir)/linux-ppc-low.c \ - $(srcdir)/linux-s390-low.c \ -@@ -329,6 +330,7 @@ clean: - rm -f arm-with-iwmmxt.c - rm -f arm-with-vfpv2.c arm-with-vfpv3.c arm-with-neon.c - rm -f mips-linux.c mips64-linux.c -+ rm -f microblaze-linux.c - rm -f nios2-linux.c - rm -f powerpc-32.c powerpc-32l.c powerpc-64l.c powerpc-e500l.c - rm -f powerpc-altivec32l.c powerpc-cell32l.c powerpc-vsx32l.c -@@ -612,6 +614,8 @@ reg-m68k.c : $(srcdir)/../regformats/reg-m68k.dat $(regdat_sh) - $(SHELL) $(regdat_sh) $(srcdir)/../regformats/reg-m68k.dat reg-m68k.c - reg-cf.c : $(srcdir)/../regformats/reg-cf.dat $(regdat_sh) - $(SHELL) $(regdat_sh) $(srcdir)/../regformats/reg-cf.dat reg-cf.c -+microblaze-linux.c : $(srcdir)/../regformats/reg-microblaze.dat $(regdat_sh) -+ $(SHELL) $(regdat_sh) $(srcdir)/../regformats/reg-microblaze.dat microblaze-linux.c - mips-linux.c : $(srcdir)/../regformats/mips-linux.dat $(regdat_sh) - $(SHELL) $(regdat_sh) $(srcdir)/../regformats/mips-linux.dat mips-linux.c - mips-dsp-linux.c : $(srcdir)/../regformats/mips-dsp-linux.dat $(regdat_sh) -diff --git a/gdb/gdbserver/configure.srv b/gdb/gdbserver/configure.srv -index cc4f53d..359c756 100644 ---- a/gdb/gdbserver/configure.srv -+++ b/gdb/gdbserver/configure.srv -@@ -198,6 +198,12 @@ case "${target}" in - srv_linux_usrregs=yes - srv_linux_thread_db=yes - ;; -+ microblaze*-*-linux*) srv_regobj=microblaze-linux.o -+ srv_tgtobj="$srv_linux_obj linux-microblaze-low.o" -+ srv_linux_usrregs=yes -+ srv_linux_regsets=yes -+ srv_linux_thread_db=yes -+ ;; - nios2*-*-linux*) srv_regobj="nios2-linux.o" - srv_tgtobj="$srv_linux_obj linux-nios2-low.o" - srv_xmlfiles="nios2-linux.xml" -diff --git a/gdb/gdbserver/linux-microblaze-low.c b/gdb/gdbserver/linux-microblaze-low.c -new file mode 100644 -index 0000000..279df9f ---- /dev/null -+++ b/gdb/gdbserver/linux-microblaze-low.c -@@ -0,0 +1,228 @@ -+/* GNU/Linux/Microblaze specific low level interface, for the remote server for -+ GDB. -+ Copyright (C) 1995-2013 Free Software Foundation, Inc. -+ -+ This file is part of GDB. -+ -+ This program is free software; you can redistribute it and/or modify -+ it under the terms of the GNU General Public License as published by -+ the Free Software Foundation; either version 3 of the License, or -+ (at your option) any later version. -+ -+ This program is distributed in the hope that it will be useful, -+ but WITHOUT ANY WARRANTY; without even the implied warranty of -+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ GNU General Public License for more details. -+ -+ You should have received a copy of the GNU General Public License -+ along with this program. If not, see <http://www.gnu.org/licenses/>. */ -+ -+#include "server.h" -+#include "linux-low.h" -+ -+#include <asm/ptrace.h> -+#include <sys/procfs.h> -+#include <sys/ptrace.h> -+ -+#include "gdb_proc_service.h" -+ -+static int microblaze_regmap[] = -+ {PT_GPR(0), PT_GPR(1), PT_GPR(2), PT_GPR(3), -+ PT_GPR(4), PT_GPR(5), PT_GPR(6), PT_GPR(7), -+ PT_GPR(8), PT_GPR(9), PT_GPR(10), PT_GPR(11), -+ PT_GPR(12), PT_GPR(13), PT_GPR(14), PT_GPR(15), -+ PT_GPR(16), PT_GPR(17), PT_GPR(18), PT_GPR(19), -+ PT_GPR(20), PT_GPR(21), PT_GPR(22), PT_GPR(23), -+ PT_GPR(24), PT_GPR(25), PT_GPR(26), PT_GPR(27), -+ PT_GPR(28), PT_GPR(29), PT_GPR(30), PT_GPR(31), -+ PT_PC, PT_MSR, PT_EAR, PT_ESR, -+ PT_FSR -+ }; -+ -+#define microblaze_num_regs (sizeof microblaze_regmap / sizeof microblaze_regmap[0]) -+ -+/* Defined in auto-generated file microblaze-linux.c. */ -+void init_registers_microblaze (void); -+extern const struct target_desc *tdesc_microblaze; -+ -+static int -+microblaze_cannot_store_register (int regno) -+{ -+ if (microblaze_regmap[regno] == -1 || regno == 0) -+ return 1; -+ -+ return 0; -+} -+ -+static int -+microblaze_cannot_fetch_register (int regno) -+{ -+ return 0; -+} -+ -+static CORE_ADDR -+microblaze_get_pc (struct regcache *regcache) -+{ -+ unsigned long pc; -+ -+ collect_register_by_name (regcache, "pc", &pc); -+ return (CORE_ADDR) pc; -+} -+ -+static void -+microblaze_set_pc (struct regcache *regcache, CORE_ADDR pc) -+{ -+ unsigned long newpc = pc; -+ -+ supply_register_by_name (regcache, "pc", &newpc); -+} -+ -+/* dbtrap insn */ -+/* brki r16, 0x18; */ -+static const unsigned long microblaze_breakpoint = 0xba0c0018; -+#define microblaze_breakpoint_len 4 -+ -+static int -+microblaze_breakpoint_at (CORE_ADDR where) -+{ -+ unsigned long insn; -+ -+ (*the_target->read_memory) (where, (unsigned char *) &insn, 4); -+ if (insn == microblaze_breakpoint) -+ return 1; -+ /* If necessary, recognize more trap instructions here. GDB only uses the -+ one. */ -+ return 0; -+} -+ -+static CORE_ADDR -+microblaze_reinsert_addr (struct regcache *regcache) -+{ -+ unsigned long pc; -+ collect_register_by_name (regcache, "r15", &pc); -+ return pc; -+} -+ -+#ifdef HAVE_PTRACE_GETREGS -+ -+static void -+microblaze_collect_ptrace_register (struct regcache *regcache, int regno, char *buf) -+{ -+ int size = register_size (regcache->tdesc, regno); -+ -+ memset (buf, 0, sizeof (long)); -+ -+ if (size < sizeof (long)) -+ collect_register (regcache, regno, buf + sizeof (long) - size); -+ else -+ collect_register (regcache, regno, buf); -+} -+ -+static void -+microblaze_supply_ptrace_register (struct regcache *regcache, -+ int regno, const char *buf) -+{ -+ int size = register_size (regcache->tdesc, regno); -+ -+ if (regno == 0) { -+ unsigned long regbuf_0 = 0; -+ /* clobbering r0 so that it is always 0 as enforced by hardware */ -+ supply_register (regcache, regno, (const char*)®buf_0); -+ } else { -+ if (size < sizeof (long)) -+ supply_register (regcache, regno, buf + sizeof (long) - size); -+ else -+ supply_register (regcache, regno, buf); -+ } -+} -+ -+/* Provide only a fill function for the general register set. ps_lgetregs -+ will use this for NPTL support. */ -+ -+static void microblaze_fill_gregset (struct regcache *regcache, void *buf) -+{ -+ int i; -+ -+ for (i = 0; i < 32; i++) -+ microblaze_collect_ptrace_register (regcache, i, (char *) buf + microblaze_regmap[i]); -+} -+ -+static void -+microblaze_store_gregset (struct regcache *regcache, const void *buf) -+{ -+ int i; -+ -+ for (i = 0; i < 32; i++) -+ supply_register (regcache, i, (char *) buf + microblaze_regmap[i]); -+} -+ -+#endif /* HAVE_PTRACE_GETREGS */ -+ -+static struct regset_info microblaze_regsets[] = { -+#ifdef HAVE_PTRACE_GETREGS -+ { PTRACE_GETREGS, PTRACE_SETREGS, 0, sizeof (elf_gregset_t), GENERAL_REGS, microblaze_fill_gregset, microblaze_store_gregset }, -+ { 0, 0, 0, -1, -1, NULL, NULL }, -+#endif /* HAVE_PTRACE_GETREGS */ -+ { 0, 0, 0, -1, -1, NULL, NULL } -+}; -+ -+static struct regsets_info microblaze_regsets_info = -+ { -+ microblaze_regsets, /* regsets */ -+ 0, /* num_regsets */ -+ NULL, /* disabled_regsets */ -+ }; -+ -+static struct usrregs_info microblaze_usrregs_info = -+ { -+ microblaze_num_regs, -+ microblaze_regmap, -+ }; -+ -+static struct regs_info regs_info = -+ { -+ NULL, /* regset_bitmap */ -+ µblaze_usrregs_info, -+ µblaze_regsets_info -+ }; -+ -+static const struct regs_info * -+microblaze_regs_info (void) -+{ -+ return ®s_info; -+} -+ -+static void -+microblaze_arch_setup (void) -+{ -+ current_process ()->tdesc = tdesc_microblaze; -+} -+ -+struct linux_target_ops the_low_target = { -+ microblaze_arch_setup, -+ microblaze_regs_info, -+ microblaze_cannot_fetch_register, -+ microblaze_cannot_store_register, -+ NULL, /* fetch_register */ -+ microblaze_get_pc, -+ microblaze_set_pc, -+ (const unsigned char *) µblaze_breakpoint, -+ microblaze_breakpoint_len, -+ microblaze_reinsert_addr, -+ 0, -+ microblaze_breakpoint_at, -+ NULL, -+ NULL, -+ NULL, -+ NULL, -+ microblaze_collect_ptrace_register, -+ microblaze_supply_ptrace_register, -+}; -+ -+void -+initialize_low_arch (void) -+{ -+ init_registers_microblaze (); -+ -+ initialize_regsets_info (µblaze_regsets_info); -+} -\ No newline at end of file -diff --git a/gdb/microblaze-linux-tdep.c b/gdb/microblaze-linux-tdep.c -index 7e6b61b..cf58e21 100644 ---- a/gdb/microblaze-linux-tdep.c -+++ b/gdb/microblaze-linux-tdep.c -@@ -38,6 +38,22 @@ - #include "tramp-frame.h" - #include "linux-tdep.h" - -+static int microblaze_debug_flag = 0; -+ -+static void -+microblaze_debug (const char *fmt, ...) -+{ -+ if (microblaze_debug_flag) -+ { -+ va_list args; -+ -+ va_start (args, fmt); -+ printf_unfiltered ("MICROBLAZE LINUX: "); -+ vprintf_unfiltered (fmt, args); -+ va_end (args); -+ } -+} -+ - static int - microblaze_linux_memory_remove_breakpoint (struct gdbarch *gdbarch, - struct bp_target_info *bp_tgt) -@@ -47,20 +63,27 @@ microblaze_linux_memory_remove_breakpoint (struct gdbarch *gdbarch, - int val; - int bplen; - gdb_byte old_contents[BREAKPOINT_MAX]; -+ struct cleanup *cleanup; - - /* Determine appropriate breakpoint contents and size for this address. */ - bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &bplen); - if (bp == NULL) - error (_("Software breakpoints not implemented for this target.")); - -+ /* Make sure we see the memory breakpoints. */ -+ cleanup = make_show_memory_breakpoints_cleanup (1); - val = target_read_memory (addr, old_contents, bplen); - - /* If our breakpoint is no longer at the address, this means that the - program modified the code on us, so it is wrong to put back the - old value. */ - if (val == 0 && memcmp (bp, old_contents, bplen) == 0) -- val = target_write_raw_memory (addr, bp_tgt->shadow_contents, bplen); -+ { -+ val = target_write_raw_memory (addr, bp_tgt->shadow_contents, bplen); -+ microblaze_debug ("microblaze_linux_memory_remove_breakpoint writing back to memory at addr 0x%lx\n", addr); -+ } - -+ do_cleanups (cleanup); - return val; - } - -diff --git a/gdb/microblaze-tdep.c b/gdb/microblaze-tdep.c -index 50b68d2..1c6dbfe 100644 ---- a/gdb/microblaze-tdep.c -+++ b/gdb/microblaze-tdep.c -@@ -164,6 +164,39 @@ microblaze_push_dummy_call (struct gdbarch *gdbarch, struct value *function, - return sp; - } - -+static int -+microblaze_linux_memory_remove_breakpoint (struct gdbarch *gdbarch, -+ struct bp_target_info *bp_tgt) -+{ -+ CORE_ADDR addr = bp_tgt->placed_address; -+ const unsigned char *bp; -+ int val; -+ int bplen; -+ gdb_byte old_contents[BREAKPOINT_MAX]; -+ struct cleanup *cleanup; -+ -+ /* Determine appropriate breakpoint contents and size for this address. */ -+ bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &bplen); -+ if (bp == NULL) -+ error (_("Software breakpoints not implemented for this target.")); -+ -+ /* Make sure we see the memory breakpoints. */ -+ cleanup = make_show_memory_breakpoints_cleanup (1); -+ val = target_read_memory (addr, old_contents, bplen); -+ -+ /* If our breakpoint is no longer at the address, this means that the -+ program modified the code on us, so it is wrong to put back the -+ old value. */ -+ if (val == 0 && memcmp (bp, old_contents, bplen) == 0) -+ { -+ val = target_write_raw_memory (addr, bp_tgt->shadow_contents, bplen); -+ microblaze_debug ("microblaze_linux_memory_remove_breakpoint writing back to memory at addr 0x%lx\n", addr); -+ } -+ -+ do_cleanups (cleanup); -+ return val; -+} -+ - static const gdb_byte * - microblaze_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pc, - int *len) -@@ -291,8 +324,8 @@ microblaze_analyze_prologue (struct gdbarch *gdbarch, CORE_ADDR pc, - - for (addr = func_addr; addr < stop; addr += INST_WORD_SIZE) - { -- //insn = microblaze_fetch_instruction (addr); -- insn = insn_block[(addr - func_addr) / INST_WORD_SIZE]; -+ insn = microblaze_fetch_instruction (addr); -+ //insn = insn_block[(addr - func_addr) / INST_WORD_SIZE]; - op = microblaze_decode_insn (insn, &rd, &ra, &rb, &imm); - microblaze_debug ("%s %08lx op=%x r%d r%d imm=%d\n", paddress (gdbarch, addr), insn, op, rd, ra, imm); - -@@ -724,13 +757,15 @@ microblaze_software_single_step (struct frame_info *frame) - rb = get_frame_register_unsigned (frame, lrb); - else - rb = 0; -+ - stepbreaks[1].address = microblaze_get_target_address (insn, immfound, imm, pc, ra, rb, &targetvalid, &unconditionalbranch); -- microblaze_debug ("single-step uncondbr=%d targetvalid=%d target=%x\n", unconditionalbranch, targetvalid, stepbreaks[1].address); -+ microblaze_debug ("single-step uncondbr=%d targetvalid=%d target=%x\n", unconditionalbranch, targetvalid, stepbreaks[1].address); -+ - if (unconditionalbranch) - stepbreaks[0].valid = FALSE; /* This is a unconditional branch: will not come to the next address */ - if (targetvalid && (stepbreaks[0].valid == FALSE || - (stepbreaks[0].address != stepbreaks[1].address)) -- && (stepbreaks[1].address != pc)) { -+ && (stepbreaks[1].address != pc)) { - stepbreaks[1].valid = TRUE; - } else { - stepbreaks[1].valid = FALSE; -@@ -900,6 +935,8 @@ microblaze_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) - /* Stack grows downward. */ - set_gdbarch_inner_than (gdbarch, core_addr_lessthan); - -+ set_gdbarch_memory_remove_breakpoint (gdbarch, microblaze_linux_memory_remove_breakpoint); -+ - set_gdbarch_breakpoint_from_pc (gdbarch, microblaze_breakpoint_from_pc); - set_gdbarch_software_single_step (gdbarch, microblaze_software_single_step); - -diff --git a/gdb/microblaze-tdep.h b/gdb/microblaze-tdep.h -index fec24b9..98aa0f5 100644 ---- a/gdb/microblaze-tdep.h -+++ b/gdb/microblaze-tdep.h -@@ -129,7 +129,8 @@ enum microblaze_regnum - - /* MICROBLAZE_BREAKPOINT defines the breakpoint that should be used. - Only used for native debugging. */ --#define MICROBLAZE_BREAKPOINT {0xb9, 0xcc, 0x00, 0x60} -+#define MICROBLAZE_BREAKPOINT {0xba, 0x0c, 0x00, 0x18} -+#define MICROBLAZE_BREAKPOINT_LE {0x18, 0x00, 0x0c, 0xba} - - extern void microblaze_supply_gregset (const struct microblaze_gregset *gregset, - struct regcache *regcache, -diff --git a/gdb/regformats/reg-microblaze.dat b/gdb/regformats/reg-microblaze.dat -new file mode 100644 -index 0000000..a5dd0a0 ---- /dev/null -+++ b/gdb/regformats/reg-microblaze.dat -@@ -0,0 +1,39 @@ -+name:microblaze -+expedite:r1,pc -+32:r0 -+32:r1 -+32:r2 -+32:r3 -+32:r4 -+32:r5 -+32:r6 -+32:r7 -+32:r8 -+32:r9 -+32:r10 -+32:r11 -+32:r12 -+32:r13 -+32:r14 -+32:r15 -+32:r16 -+32:r17 -+32:r18 -+32:r19 -+32:r20 -+32:r21 -+32:r22 -+32:r23 -+32:r24 -+32:r25 -+32:r26 -+32:r27 -+32:r28 -+32:r29 -+32:r30 -+32:r31 -+32:pc -+32:msr -+32:ear -+32:esr -+32:fsr --- -1.9.0 - |