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author | Tom Tromey <tromey@adacore.com> | 2020-09-17 14:11:38 -0600 |
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committer | Tom Tromey <tromey@adacore.com> | 2020-09-17 14:28:06 -0600 |
commit | c1e1314d00fda5625f1a87b915fd83a61c253993 (patch) | |
tree | 62affcd614124eec0c51db5223b0ea7f797a17d1 /gdb/target-descriptions.h | |
parent | 0363df3db7d3f5edd3a349ab7720eca83f460545 (diff) | |
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Change management of tdesc_arch_data
While working on something else, I noticed that tdesc_data_cleanup
took a void* parameter. Looking more into this, I found that
tdesc_use_registers expected a transfer of ownership.
I think it's better to express this sort of thing via the type system,
when possible. This patch changes tdesc_data_alloc to return a unique
pointer, changes tdesc_use_registers to accept an rvalue reference,
and then adapts all the users.
Note that a deleter structure is introduced to avoid having to move
tdesc_arch_data to the header file.
2020-09-17 Tom Tromey <tromey@adacore.com>
* tic6x-tdep.c (tic6x_gdbarch_init): Update.
* target-descriptions.h (struct tdesc_arch_data_deleter): New.
(tdesc_arch_data_up): New typedef.
(tdesc_use_registers, tdesc_data_alloc): Update.
(tdesc_data_cleanup): Don't declare.
* target-descriptions.c (tdesc_data_alloc): Return a
tdesc_arch_data_up.
(tdesc_arch_data_deleter::operator()): Rename from
tdesc_data_cleanup. Change argument type.
(tdesc_use_registers): Change early_data to an rvalue reference.
(tdesc_use_registers): Don't use delete.
* sparc-tdep.c (sparc32_gdbarch_init): Update.
* s390-tdep.c (s390_gdbarch_init): Update.
* rx-tdep.c (rx_gdbarch_init): Update.
* rs6000-tdep.c (rs6000_gdbarch_init): Update.
* riscv-tdep.c (riscv_gdbarch_init): Update.
* or1k-tdep.c (or1k_gdbarch_init): Update.
* nios2-tdep.c (nios2_gdbarch_init): Update.
* nds32-tdep.c (nds32_gdbarch_init): Update.
* mips-tdep.c (mips_gdbarch_init): Update.
* microblaze-tdep.c (microblaze_gdbarch_init): Update.
* m68k-tdep.c (m68k_gdbarch_init): Update.
* i386-tdep.c (i386_gdbarch_init): Update.
* arm-tdep.c (arm_gdbarch_init): Update.
* arc-tdep.c (arc_tdesc_init): Update.
(arc_gdbarch_init): Update.
* aarch64-tdep.c (aarch64_gdbarch_init): Update.
Diffstat (limited to 'gdb/target-descriptions.h')
-rw-r--r-- | gdb/target-descriptions.h | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/gdb/target-descriptions.h b/gdb/target-descriptions.h index 66a2c21..171ef76 100644 --- a/gdb/target-descriptions.h +++ b/gdb/target-descriptions.h @@ -104,6 +104,18 @@ typedef int (*tdesc_unknown_register_ftype) (struct gdbarch *gdbarch, tdesc_feature *feature, const char *reg_name, int possible_regnum); +/* A deleter adapter for a target arch data. */ + +struct tdesc_arch_data_deleter +{ + void operator() (struct tdesc_arch_data *data) const; +}; + +/* A unique pointer specialization that holds a target_desc. */ + +typedef std::unique_ptr<tdesc_arch_data, tdesc_arch_data_deleter> + tdesc_arch_data_up; + /* Update GDBARCH to use the TARGET_DESC for registers. TARGET_DESC may be GDBARCH's target description or (if GDBARCH does not have one which describes registers) another target description @@ -119,19 +131,13 @@ typedef int (*tdesc_unknown_register_ftype) void tdesc_use_registers (struct gdbarch *gdbarch, const struct target_desc *target_desc, - struct tdesc_arch_data *early_data, + tdesc_arch_data_up &&early_data, tdesc_unknown_register_ftype unk_reg_cb = NULL); /* Allocate initial data for validation of a target description during gdbarch initialization. */ -struct tdesc_arch_data *tdesc_data_alloc (void); - -/* Clean up data allocated by tdesc_data_alloc. This should only - be called to discard the data; tdesc_use_registers takes ownership - of its EARLY_DATA argument. */ - -void tdesc_data_cleanup (void *data_untyped); +tdesc_arch_data_up tdesc_data_alloc (); /* Search FEATURE for a register named NAME. Record REGNO and the register in DATA; when tdesc_use_registers is called, REGNO will be |