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Convert the RX target to make use of target descriptions.
gdb/ChangeLog 2019-08-25 Yoshinori Sato <ysato@users.sourceforge.jp> * gdb/rx-tdep.c (rx_register_names): New. (rx_register_name): Delete. (rx_psw_type): Delete. (rx_fpsw_type): Delete. (rx_register_type): Delete. (rx_gdbarch_init): Convert target-descriptions. (_initialize_rx_tdep): Add initialize_tdesc_rx. * gdb/features/Makefile: Add rx.xml. * gdb/features/rx.xml: New. * gdb/features/rx.c: Generated. * gdb/NEWS: Mention target description support. gdb/doc/ChangeLog: 2019-08-25 Yoshinori Sato <ysato@users.sourceforge.jp> * gdb.texinfo (Standard Target Features): Add RX Features sub-section.
This commit is contained in:
Yoshinori Sato
160
gdb/rx-tdep.c
160
gdb/rx-tdep.c
@ -33,11 +33,15 @@
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#include "value.h"
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#include "gdbcore.h"
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#include "dwarf2-frame.h"
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#include "remote.h"
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#include "target-descriptions.h"
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#include "elf/rx.h"
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#include "elf-bfd.h"
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#include <algorithm>
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#include "features/rx.c"
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/* Certain important register numbers. */
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enum
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{
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@ -114,117 +118,13 @@ struct rx_prologue
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int reg_offset[RX_NUM_REGS];
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};
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/* Implement the "register_name" gdbarch method. */
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static const char *
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rx_register_name (struct gdbarch *gdbarch, int regnr)
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{
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static const char *const reg_names[] = {
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"r0",
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"r1",
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"r2",
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"r3",
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"r4",
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"r5",
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"r6",
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"r7",
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"r8",
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"r9",
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"r10",
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"r11",
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"r12",
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"r13",
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"r14",
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"r15",
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"usp",
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"isp",
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"psw",
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"pc",
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"intb",
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"bpsw",
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"bpc",
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"fintv",
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"fpsw",
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"acc"
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};
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return reg_names[regnr];
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}
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/* Construct the flags type for PSW and BPSW. */
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static struct type *
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rx_psw_type (struct gdbarch *gdbarch)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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if (tdep->rx_psw_type == NULL)
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{
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tdep->rx_psw_type = arch_flags_type (gdbarch, "rx_psw_type", 32);
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append_flags_type_flag (tdep->rx_psw_type, 0, "C");
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append_flags_type_flag (tdep->rx_psw_type, 1, "Z");
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append_flags_type_flag (tdep->rx_psw_type, 2, "S");
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append_flags_type_flag (tdep->rx_psw_type, 3, "O");
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append_flags_type_flag (tdep->rx_psw_type, 16, "I");
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append_flags_type_flag (tdep->rx_psw_type, 17, "U");
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append_flags_type_flag (tdep->rx_psw_type, 20, "PM");
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append_flags_type_flag (tdep->rx_psw_type, 24, "IPL0");
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append_flags_type_flag (tdep->rx_psw_type, 25, "IPL1");
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append_flags_type_flag (tdep->rx_psw_type, 26, "IPL2");
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append_flags_type_flag (tdep->rx_psw_type, 27, "IPL3");
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}
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return tdep->rx_psw_type;
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}
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/* Construct flags type for FPSW. */
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static struct type *
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rx_fpsw_type (struct gdbarch *gdbarch)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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if (tdep->rx_fpsw_type == NULL)
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{
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tdep->rx_fpsw_type = arch_flags_type (gdbarch, "rx_fpsw_type", 32);
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append_flags_type_flag (tdep->rx_fpsw_type, 0, "RM0");
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append_flags_type_flag (tdep->rx_fpsw_type, 1, "RM1");
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append_flags_type_flag (tdep->rx_fpsw_type, 2, "CV");
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append_flags_type_flag (tdep->rx_fpsw_type, 3, "CO");
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append_flags_type_flag (tdep->rx_fpsw_type, 4, "CZ");
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append_flags_type_flag (tdep->rx_fpsw_type, 5, "CU");
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append_flags_type_flag (tdep->rx_fpsw_type, 6, "CX");
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append_flags_type_flag (tdep->rx_fpsw_type, 7, "CE");
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append_flags_type_flag (tdep->rx_fpsw_type, 8, "DN");
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append_flags_type_flag (tdep->rx_fpsw_type, 10, "EV");
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append_flags_type_flag (tdep->rx_fpsw_type, 11, "EO");
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append_flags_type_flag (tdep->rx_fpsw_type, 12, "EZ");
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append_flags_type_flag (tdep->rx_fpsw_type, 13, "EU");
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append_flags_type_flag (tdep->rx_fpsw_type, 14, "EX");
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append_flags_type_flag (tdep->rx_fpsw_type, 26, "FV");
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append_flags_type_flag (tdep->rx_fpsw_type, 27, "FO");
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append_flags_type_flag (tdep->rx_fpsw_type, 28, "FZ");
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append_flags_type_flag (tdep->rx_fpsw_type, 29, "FU");
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append_flags_type_flag (tdep->rx_fpsw_type, 30, "FX");
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append_flags_type_flag (tdep->rx_fpsw_type, 31, "FS");
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}
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return tdep->rx_fpsw_type;
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}
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/* Implement the "register_type" gdbarch method. */
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static struct type *
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rx_register_type (struct gdbarch *gdbarch, int reg_nr)
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{
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if (reg_nr == RX_PC_REGNUM)
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return builtin_type (gdbarch)->builtin_func_ptr;
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else if (reg_nr == RX_PSW_REGNUM || reg_nr == RX_BPSW_REGNUM)
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return rx_psw_type (gdbarch);
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else if (reg_nr == RX_FPSW_REGNUM)
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return rx_fpsw_type (gdbarch);
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else if (reg_nr == RX_ACC_REGNUM)
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return builtin_type (gdbarch)->builtin_unsigned_long_long;
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else
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return builtin_type (gdbarch)->builtin_unsigned_long;
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}
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/* RX register names */
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static const char *const rx_register_names[] = {
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"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
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"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
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"usp", "isp", "psw", "pc", "intb", "bpsw","bpc","fintv",
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"fpsw", "acc",
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};
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/* Function for finding saved registers in a 'struct pv_area'; this
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@ -1044,6 +944,8 @@ rx_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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struct gdbarch *gdbarch;
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struct gdbarch_tdep *tdep;
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int elf_flags;
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struct tdesc_arch_data *tdesc_data = NULL;
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const struct target_desc *tdesc = info.target_desc;
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/* Extract the elf_flags if available. */
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if (info.abfd != NULL
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@ -1065,16 +967,42 @@ rx_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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return arches->gdbarch;
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}
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/* None found, create a new architecture from the information
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provided. */
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if (tdesc == NULL)
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tdesc = tdesc_rx;
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/* Check any target description for validity. */
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if (tdesc_has_registers (tdesc))
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{
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const struct tdesc_feature *feature;
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bool valid_p = true;
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feature = tdesc_find_feature (tdesc, "org.gnu.gdb.rx.core");
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if (feature != NULL)
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{
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tdesc_data = tdesc_data_alloc ();
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for (int i = 0; i < RX_NUM_REGS; i++)
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valid_p &= tdesc_numbered_register (feature, tdesc_data, i,
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rx_register_names[i]);
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}
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if (!valid_p)
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{
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tdesc_data_cleanup (tdesc_data);
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return NULL;
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}
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}
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gdb_assert(tdesc_data != NULL);
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tdep = XCNEW (struct gdbarch_tdep);
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gdbarch = gdbarch_alloc (&info, tdep);
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tdep->elf_flags = elf_flags;
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set_gdbarch_num_regs (gdbarch, RX_NUM_REGS);
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tdesc_use_registers (gdbarch, tdesc, tdesc_data);
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set_gdbarch_num_pseudo_regs (gdbarch, 0);
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set_gdbarch_register_name (gdbarch, rx_register_name);
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set_gdbarch_register_type (gdbarch, rx_register_type);
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set_gdbarch_pc_regnum (gdbarch, RX_PC_REGNUM);
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set_gdbarch_sp_regnum (gdbarch, RX_SP_REGNUM);
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set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
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@ -1092,6 +1020,7 @@ rx_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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set_gdbarch_ptr_bit (gdbarch, 32);
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set_gdbarch_float_bit (gdbarch, 32);
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set_gdbarch_float_format (gdbarch, floatformats_ieee_single);
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if (elf_flags & E_FLAG_RX_64BIT_DOUBLES)
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{
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set_gdbarch_double_bit (gdbarch, 64);
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@ -1132,4 +1061,5 @@ void
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_initialize_rx_tdep (void)
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{
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register_gdbarch_init (bfd_arch_rx, rx_gdbarch_init);
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initialize_tdesc_rx ();
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}
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