From 58dbd54186b324c1481454892e03c5fb8307dbc1 Mon Sep 17 00:00:00 2001 From: Yao Qi Date: Sun, 14 Aug 2011 15:25:45 +0000 Subject: [PATCH] gdb/gdbserver/ * Makefile.in (clean): Remove tic6x-*.c files. (linux-tic6x-low.o, tic6x-c62x-linux.o, tic6x-c64x-linux.o): New rules. (tic6x-c64xp-linux.o, tic6x-c62x-linux.c, tic6x-c64x-linux.c): Likewise. (tic6x-c64xp-linux.c): Likewise. * configure.srv: Add support for tic6x-*-uclinux. * linux-tic6x-low.c: New. * linux-low.c (PT_TEXT_ADDR, PT_DATA_ADDR, PT_TEXT_END_ADDR): Define. --- gdb/gdbserver/ChangeLog | 11 ++ gdb/gdbserver/Makefile.in | 13 ++ gdb/gdbserver/configure.srv | 14 ++ gdb/gdbserver/linux-low.c | 4 + gdb/gdbserver/linux-tic6x-low.c | 334 ++++++++++++++++++++++++++++++++ 5 files changed, 376 insertions(+) create mode 100644 gdb/gdbserver/linux-tic6x-low.c diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog index 7b2b165a1e..b77f6b892f 100644 --- a/gdb/gdbserver/ChangeLog +++ b/gdb/gdbserver/ChangeLog @@ -1,3 +1,14 @@ +2011-08-14 Andrew Jenner + Yao Qi + + * Makefile.in (clean): Remove tic6x-*.c files. + (linux-tic6x-low.o, tic6x-c62x-linux.o, tic6x-c64x-linux.o): New rules. + (tic6x-c64xp-linux.o, tic6x-c62x-linux.c, tic6x-c64x-linux.c): Likewise. + (tic6x-c64xp-linux.c): Likewise. + * configure.srv: Add support for tic6x-*-uclinux. + * linux-tic6x-low.c: New. + * linux-low.c (PT_TEXT_ADDR, PT_DATA_ADDR, PT_TEXT_END_ADDR): Define. + 2011-08-14 Andrew Stubbs Yao Qi diff --git a/gdb/gdbserver/Makefile.in b/gdb/gdbserver/Makefile.in index 079721d98a..70f011add9 100644 --- a/gdb/gdbserver/Makefile.in +++ b/gdb/gdbserver/Makefile.in @@ -280,6 +280,7 @@ clean: rm -f powerpc-isa205-altivec32l.c powerpc-isa205-vsx32l.c powerpc-isa205-altivec64l.c rm -f powerpc-isa205-vsx64l.c rm -f s390-linux32.c s390-linux64.c s390x-linux64.c + rm -f tic6x-c64xp-linux.c tic6x-c64x-linux.c tic6x-c62x-linux.c rm -f xml-builtin.c stamp-xml rm -f i386-avx.c i386-avx-linux.c rm -f amd64-avx.c amd64-avx-linux.c @@ -457,6 +458,7 @@ linux-mips-low.o: linux-mips-low.c $(linux_low_h) $(server_h) \ linux-ppc-low.o: linux-ppc-low.c $(linux_low_h) $(server_h) linux-s390-low.o: linux-s390-low.c $(linux_low_h) $(server_h) linux-sh-low.o: linux-sh-low.c $(linux_low_h) $(server_h) +linux-tic6x-low.o: linux-tic6x-low.c $(linux_low_h) $(server_h) linux-x86-low.o: linux-x86-low.c $(linux_low_h) $(server_h) \ $(gdb_proc_service_h) $(i386_low_h) linux-xtensa-low.o: linux-xtensa-low.c xtensa-xtregs.c $(linux_low_h) $(server_h) @@ -592,6 +594,17 @@ s390-linux64.c : $(srcdir)/../regformats/s390-linux64.dat $(regdat_sh) s390x-linux64.o : s390x-linux64.c $(regdef_h) s390x-linux64.c : $(srcdir)/../regformats/s390x-linux64.dat $(regdat_sh) $(SHELL) $(regdat_sh) $(srcdir)/../regformats/s390x-linux64.dat s390x-linux64.c + +tic6x-c64xp-linux.o : tic6x-c64xp-linux.c $(regdef_h) +tic6x-c64xp-linux.c : $(srcdir)/../regformats/tic6x-c64xp-linux.dat $(regdat_sh) + $(SHELL) $(regdat_sh) $(srcdir)/../regformats/tic6x-c64xp-linux.dat tic6x-c64xp-linux.c +tic6x-c64x-linux.o : tic6x-c64x-linux.c $(regdef_h) +tic6x-c64x-linux.c : $(srcdir)/../regformats/tic6x-c64x-linux.dat $(regdat_sh) + $(SHELL) $(regdat_sh) $(srcdir)/../regformats/tic6x-c64x-linux.dat tic6x-c64x-linux.c +tic6x-c62x-linux.o : tic6x-c62x-linux.c $(regdef_h) +tic6x-c62x-linux.c : $(srcdir)/../regformats/tic6x-c62x-linux.dat $(regdat_sh) + $(SHELL) $(regdat_sh) $(srcdir)/../regformats/tic6x-c62x-linux.dat tic6x-c62x-linux.c + reg-sh.o : reg-sh.c $(regdef_h) reg-sh.c : $(srcdir)/../regformats/reg-sh.dat $(regdat_sh) $(SHELL) $(regdat_sh) $(srcdir)/../regformats/reg-sh.dat reg-sh.c diff --git a/gdb/gdbserver/configure.srv b/gdb/gdbserver/configure.srv index 378b56ed15..811dfdc0c5 100644 --- a/gdb/gdbserver/configure.srv +++ b/gdb/gdbserver/configure.srv @@ -243,6 +243,20 @@ case "${target}" in spu*-*-*) srv_regobj=reg-spu.o srv_tgtobj="spu-low.o" ;; + tic6x-*-uclinux) srv_regobj="tic6x-c64xp-linux.o" + srv_regobj="${srv_regobj} tic6x-c64x-linux.o" + srv_regobj="${srv_regobj} tic6x-c62x-linux.o" + srv_xmlfiles="tic6x-c64xp-linux.xml" + srv_xmlfiles="${srv_xmlfiles} tic6x-c64x-linux.xml" + srv_xmlfiles="${srv_xmlfiles} tic6x-c62x-linux.xml" + srv_xmlfiles="${srv_xmlfiles} tic6x-core.xml" + srv_xmlfiles="${srv_xmlfiles} tic6x-gp.xml" + srv_xmlfiles="${srv_xmlfiles} tic6x-c6xp.xml" + srv_tgtobj="linux-low.o linux-osdata.o linux-tic6x-low.o" + srv_linux_regsets=yes + srv_linux_usrregs=yes + srv_linux_thread_db=yes + ;; x86_64-*-linux*) srv_regobj="$srv_amd64_linux_regobj $srv_i386_linux_regobj" srv_tgtobj="linux-low.o linux-osdata.o linux-x86-low.o i386-low.o i387-fp.o" srv_xmlfiles="$srv_i386_linux_xmlfiles $srv_amd64_linux_xmlfiles" diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c index 999ca92c8f..0aab032e94 100644 --- a/gdb/gdbserver/linux-low.c +++ b/gdb/gdbserver/linux-low.c @@ -4347,6 +4347,10 @@ linux_stopped_data_address (void) #define PT_TEXT_ADDR 220 #define PT_TEXT_END_ADDR 224 #define PT_DATA_ADDR 228 +#elif defined(__TMS320C6X__) +#define PT_TEXT_ADDR (0x10000*4) +#define PT_DATA_ADDR (0x10004*4) +#define PT_TEXT_END_ADDR (0x10008*4) #endif /* Under uClinux, programs are loaded at non-zero offsets, which we need diff --git a/gdb/gdbserver/linux-tic6x-low.c b/gdb/gdbserver/linux-tic6x-low.c new file mode 100644 index 0000000000..44daa4d711 --- /dev/null +++ b/gdb/gdbserver/linux-tic6x-low.c @@ -0,0 +1,334 @@ +/* Target dependent code for GDB on TI C6x systems. + + Copyright (C) 2010, 2011 + Free Software Foundation, Inc. + Contributed by Andrew Jenner + Contributed by Yao Qi + + 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 . */ + +#include "server.h" +#include "linux-low.h" + +#include +#include + +#include "gdb_proc_service.h" + +#ifndef PTRACE_GET_THREAD_AREA +#define PTRACE_GET_THREAD_AREA 25 +#endif + +/* There are at most 69 registers accessible in ptrace. */ +#define TIC6X_NUM_REGS 69 + +#include + +/* Defined in auto-generated file tic6x-c64xp-linux.c. */ +void init_registers_tic6x_c64xp_linux (void); +/* Defined in auto-generated file tic6x-c64x-linux.c. */ +void init_registers_tic6x_c64x_linux (void); +/* Defined in auto-generated file tic62x-c6xp-linux.c. */ +void init_registers_tic6x_c62x_linux (void); + +union tic6x_register +{ + unsigned char buf[4]; + + int reg32; +}; + +/* Return the ptrace ``address'' of register REGNO. */ + +#if __BYTE_ORDER == __BIG_ENDIAN +static int tic6x_regmap_c64xp[] = { + /* A0 - A15 */ + 53, 52, 55, 54, 57, 56, 59, 58, + 61, 60, 63, 62, 65, 64, 67, 66, + /* B0 - B15 */ + 23, 22, 25, 24, 27, 26, 29, 28, + 31, 30, 33, 32, 35, 34, 69, 68, + /* CSR PC */ + 5, 4, + /* A16 - A31 */ + 37, 36, 39, 38, 41, 40, 43, 42, + 45, 44, 47, 46, 49, 48, 51, 50, + /* B16 - B31 */ + 7, 6, 9, 8, 11, 10, 13, 12, + 15, 14, 17, 16, 19, 18, 21, 20, + /* TSR, ILC, RILC */ + 1, 2, 3 +}; + +static int tic6x_regmap_c64x[] = { + /* A0 - A15 */ + 51, 50, 53, 52, 55, 54, 57, 56, + 59, 58, 61, 60, 63, 62, 65, 64, + /* B0 - B15 */ + 21, 20, 23, 22, 25, 24, 27, 26, + 29, 28, 31, 30, 33, 32, 67, 66, + /* CSR PC */ + 3, 2, + /* A16 - A31 */ + 35, 34, 37, 36, 39, 38, 41, 40, + 43, 42, 45, 44, 47, 46, 49, 48, + /* B16 - B31 */ + 5, 4, 7, 6, 9, 8, 11, 10, + 13, 12, 15, 14, 17, 16, 19, 18, + -1, -1, -1 +}; + +static int tic6x_regmap_c62x[] = { + /* A0 - A15 */ + 19, 18, 21, 20, 23, 22, 25, 24, + 27, 26, 29, 28, 31, 30, 33, 32, + /* B0 - B15 */ + 5, 4, 7, 6, 9, 8, 11, 10, + 13, 12, 15, 14, 17, 16, 35, 34, + /* CSR, PC */ + 3, 2, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1 +}; + +#else +static int tic6x_regmap_c64xp[] = { + /* A0 - A15 */ + 52, 53, 54, 55, 56, 57, 58, 59, + 60, 61, 62, 63, 64, 65, 66, 67, + /* B0 - B15 */ + 22, 23, 24, 25, 26, 27, 28, 29, + 30, 31, 32, 33, 34, 35, 68, 69, + /* CSR PC */ + 4, 5, + /* A16 - A31 */ + 36, 37, 38, 39, 40, 41, 42, 43, + 44, 45, 46, 47, 48, 49, 50, 51, + /* B16 -B31 */ + 6, 7, 8, 9, 10, 11, 12, 13, + 14, 15, 16, 17, 18, 19, 20, 31, + /* TSR, ILC, RILC */ + 0, 3, 2 +}; + +static int tic6x_regmap_c64x[] = { + /* A0 - A15 */ + 50, 51, 52, 53, 54, 55, 56, 57, + 58, 59, 60, 61, 62, 63, 64, 65, + /* B0 - B15 */ + 20, 21, 22, 23, 24, 25, 26, 27, + 28, 29, 30, 31, 32, 33, 66, 67, + /* CSR PC */ + 2, 3, + /* A16 - A31 */ + 34, 35, 36, 37, 38, 39, 40, 41, + 42, 43, 44, 45, 46, 47, 48, 49, + /* B16 - B31 */ + 4, 5, 6, 7, 8, 9, 10, 11, + 12, 13, 14, 15, 16, 17, 18, 19, + -1, -1, -1 +}; + +static int tic6x_regmap_c62x[] = { + /* A0 - A15 */ + 18, 19, 20, 21, 22, 23, 24, 25, + 26, 27, 28, 29, 30, 31, 32, 33, + /* B0 - B15 */ + 4, 5, 6, 7, 8, 9, 10, 11, + 12, 13, 14, 15, 16, 17, 34, 35, + /* CSR PC */ + 2, 3, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1 +}; + +#endif + +extern struct linux_target_ops the_low_target; + +static int *tic6x_regmap; +static unsigned int tic6x_breakpoint; + +static void +tic6x_arch_setup (void) +{ + register unsigned int csr asm ("B2"); + unsigned int cpuid; + + /* Determine the CPU we're running on to find the register order. */ + __asm__ ("MVC .S2 CSR,%0" : "=r" (csr) :); + cpuid = csr >> 24; + switch (cpuid) + { + case 0x00: /* C62x */ + case 0x02: /* C67x */ + tic6x_regmap = tic6x_regmap_c62x; + tic6x_breakpoint = 0x0000a122; /* BNOP .S2 0,5 */ + init_registers_tic6x_c62x_linux (); + break; + case 0x03: /* C67x+ */ + tic6x_regmap = tic6x_regmap_c64x; + tic6x_breakpoint = 0x0000a122; /* BNOP .S2 0,5 */ + init_registers_tic6x_c64x_linux (); + break; + case 0x0c: /* C64x */ + tic6x_regmap = tic6x_regmap_c64x; + tic6x_breakpoint = 0x0000a122; /* BNOP .S2 0,5 */ + init_registers_tic6x_c64x_linux (); + break; + case 0x10: /* C64x+ */ + case 0x14: /* C674x */ + case 0x15: /* C66x */ + tic6x_regmap = tic6x_regmap_c64xp; + tic6x_breakpoint = 0x56454314; /* illegal opcode */ + init_registers_tic6x_c64xp_linux (); + break; + default: + error ("Unknown CPU ID 0x%02x", cpuid); + } + the_low_target.regmap = tic6x_regmap; +} + +static int +tic6x_cannot_fetch_register (int regno) +{ + return (tic6x_regmap[regno] == -1); +} + +static int +tic6x_cannot_store_register (int regno) +{ + return (tic6x_regmap[regno] == -1); +} + +static CORE_ADDR +tic6x_get_pc (struct regcache *regcache) +{ + union tic6x_register pc; + + collect_register_by_name (regcache, "PC", pc.buf); + return pc.reg32; +} + +static void +tic6x_set_pc (struct regcache *regcache, CORE_ADDR pc) +{ + union tic6x_register newpc; + + newpc.reg32 = pc; + supply_register_by_name (regcache, "PC", newpc.buf); +} + +#define tic6x_breakpoint_len 4 + +static int +tic6x_breakpoint_at (CORE_ADDR where) +{ + unsigned int insn; + + (*the_target->read_memory) (where, (unsigned char *) &insn, 4); + if (insn == tic6x_breakpoint) + return 1; + + /* If necessary, recognize more trap instructions here. GDB only uses the + one. */ + return 0; +} + +/* Fetch the thread-local storage pointer for libthread_db. */ + +ps_err_e +ps_get_thread_area (const struct ps_prochandle *ph, + lwpid_t lwpid, int idx, void **base) +{ + if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0) + return PS_ERR; + + /* IDX is the bias from the thread pointer to the beginning of the + thread descriptor. It has to be subtracted due to implementation + quirks in libthread_db. */ + *base = (void *) ((char *) *base - idx); + + return PS_OK; +} + +static void +tic6x_collect_register (struct regcache *regcache, int regno, + union tic6x_register *reg) +{ + union tic6x_register tmp_reg; + + collect_register (regcache, regno, &tmp_reg.reg32); + reg->reg32 = tmp_reg.reg32; +} + +static void +tic6x_supply_register (struct regcache *regcache, int regno, + const union tic6x_register *reg) +{ + int offset = 0; + + supply_register (regcache, regno, reg->buf + offset); +} + +static void +tic6x_fill_gregset (struct regcache *regcache, void *buf) +{ + union tic6x_register *regset = buf; + int i; + + for (i = 0; i < TIC6X_NUM_REGS; i++) + if (tic6x_regmap[i] != -1) + tic6x_collect_register (regcache, i, regset + tic6x_regmap[i]); +} + +static void +tic6x_store_gregset (struct regcache *regcache, const void *buf) +{ + const union tic6x_register *regset = buf; + int i; + + for (i = 0; i < TIC6X_NUM_REGS; i++) + if (tic6x_regmap[i] != -1) + tic6x_supply_register (regcache, i, regset + tic6x_regmap[i]); +} + +struct regset_info target_regsets[] = { + { PTRACE_GETREGS, PTRACE_SETREGS, 0, TIC6X_NUM_REGS * 4, GENERAL_REGS, + tic6x_fill_gregset, tic6x_store_gregset }, + { 0, 0, 0, -1, -1, NULL, NULL } +}; + +struct linux_target_ops the_low_target = { + tic6x_arch_setup, + TIC6X_NUM_REGS, + 0, + tic6x_cannot_fetch_register, + tic6x_cannot_store_register, + tic6x_get_pc, + tic6x_set_pc, + (const unsigned char *) &tic6x_breakpoint, + tic6x_breakpoint_len, + NULL, + 0, + tic6x_breakpoint_at, +}; -- 2.34.1