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authorTankut Baris Aktemur <tankut.baris.aktemur@intel.com>2020-04-02 15:11:23 +0200
committerTankut Baris Aktemur <tankut.baris.aktemur@intel.com>2020-04-02 15:11:23 +0200
commitef0478f6112ede4da9b70e07aa3124f0d2faf108 (patch)
treeb918c66646b890f6cf60acd5ac497410147d9a77 /gdbserver/linux-xtensa-low.cc
parentd16f3f6c70dfc71bc239cac4f49be34c94c366ad (diff)
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gdbserver/linux-low: start turning linux target ops into methods
This is the beginning of a series of patches that convert the linux low targets into classes derived from linux_process_target. At the end of the series we obtain a class hierarchy that looks like this: process_stratum_target ^ | |-- linux_process_target ^ | |-- x86_target (defined in linux-x86-low) |-- aarch64_target (defined in linux-aarch64-low) |-- ppc_target (defined in linux-ppc-low) |-- ... In several cases, linux_process_target simply forwards a target op request to a corresponding linux_target_ops function. For these cases, the definition in linux_process_target will be removed and the definition will be left to the deriving linux low target class; using inheritance provides a nice and natural, object-oriented simplification in these cases. The series converts linux_target_ops into protected methods of linux_process_target one by one. Throughout the series, based on the needs, static functions defined in linux-low.cc are converted to private methods of linux_process_target as well. This is done either as separate patches or as integrated into a patch that convert a particular linux_target_op into a method. The series ends with the patch titled "gdbserver/linux-low: delete 'linux_target_ops' and 'the_low_target'". Built and regression-tested on x86_64-linux. The following linux low targets have been built (but not tested) via cross-compilation: aarch64, arm, m68k, mips, ppc, riscv, s390, sh, sparc. The other targets (bfin, cris, crisv32, ia64, m32r, nios2, tic6x, tile, xtensa) were neither built nor tested. gdbserver/ChangeLog: 2020-04-02 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com> * linux-low.h (the_linux_target): New extern declaration. * linux-low.cc (initialize_low): Use 'the_linux_target' to set 'the_target'. (the_linux_target): Remove. * linux-x86-low.cc (class x86_target): New class. (the_x86_target): New static object. (the_linux_target): Define as pointer to the_x86_target. * linux-aarch64-low.cc (class aarch64_target): New class. (the_aarch64_target): New static object. (the_linux_target): Define as pointer to the_aarch64_target. * linux-arm-low.cc (class arm_target): New class. (the_arm_target): New static object. (the_linux_target): Define as pointer to the_arm_target. * linux-bfin-low.cc (class bfin_target): New class. (the_bfin_target): New static object. (the_linux_target): Define as pointer to the_bfin_target. * linux-cris-low.cc (class cris_target): New class. (the_cris_target): New static object. (the_linux_target): Define as pointer to the_cris_target. * linux-crisv32-low.cc (class crisv32_target): New class. (the_crisv32_target): New static object. (the_linux_target): Define as pointer to the_crisv32_target. * linux-ia64-low.cc (class ia64_target): New class. (the_ia64_target): New static object. (the_linux_target): Define as pointer to the_ia64_target. * linux-m32r-low.cc (class m32r_target): New class. (the_m32r_target): New static object. (the_linux_target): Define as pointer to the_m32r_target. * linux-m68k-low.cc (class m68k_target): New class. (the_m68k_target): New static object. (the_linux_target): Define as pointer to the_m68k_target. * linux-mips-low.cc (class mips_target): New class. (the_mips_target): New static object. (the_linux_target): Define as pointer to the_mips_target. * linux-nios2-low.cc (class nios2_target): New class. (the_nios2_target): New static object. (the_linux_target): Define as pointer to the_nios2_target. * linux-ppc-low.cc (class ppc_target): New class. (the_ppc_target): New static object. (the_linux_target): Define as pointer to the_ppc_target. * linux-riscv-low.cc (class riscv_target): New class. (the_riscv_target): New static object. (the_linux_target): Define as pointer to the_riscv_target. * linux-s390-low.cc (class s390_target): New class. (the_s390_target): New static object. (the_linux_target): Define as pointer to the_s390_target. * linux-sh-low.cc (class sh_target): New class. (the_sh_target): New static object. (the_linux_target): Define as pointer to the_sh_target. * linux-sparc-low.cc (class sparc_target): New class. (the_sparc_target): New static object. (the_linux_target): Define as pointer to the_sparc_target. * linux-tic6x-low.cc (class tic6x_target): New class. (the_tic6x_target): New static object. (the_linux_target): Define as pointer to the_tic6x_target. * linux-tile-low.cc (class tile_target): New class. (the_tile_target): New static object. (the_linux_target): Define as pointer to the_tile_target. * linux-xtensa-low.cc (class xtensa_target): New class. (the_xtensa_target): New static object. (the_linux_target): Define as pointer to the_xtensa_target.
Diffstat (limited to 'gdbserver/linux-xtensa-low.cc')
-rw-r--r--gdbserver/linux-xtensa-low.cc15
1 files changed, 15 insertions, 0 deletions
diff --git a/gdbserver/linux-xtensa-low.cc b/gdbserver/linux-xtensa-low.cc
index 510c9bd..3214682 100644
--- a/gdbserver/linux-xtensa-low.cc
+++ b/gdbserver/linux-xtensa-low.cc
@@ -20,6 +20,18 @@
#include "server.h"
#include "linux-low.h"
+/* Linux target op definitions for the Xtensa architecture. */
+
+class xtensa_target : public linux_process_target
+{
+public:
+
+};
+
+/* The singleton target ops object. */
+
+static xtensa_target the_xtensa_target;
+
/* Defined in auto-generated file reg-xtensa.c. */
void init_registers_xtensa (void);
extern const struct target_desc *tdesc_xtensa;
@@ -304,6 +316,9 @@ struct linux_target_ops the_low_target = {
xtensa_supports_hardware_single_step,
};
+/* The linux target ops object. */
+
+linux_process_target *the_linux_target = &the_xtensa_target;
void
initialize_low_arch (void)