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export dwarf2_reg_to_regnum_or_error

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This exports a utility function, dwarf2_reg_to_regnum_or_error, that
was previously private to dwarf2loc.c.

gdb/ChangeLog
2014-12-12  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* dwarf2loc.h (dwarf2_reg_to_regnum_or_error): Declare.
	* dwarf2loc.c (dwarf2_reg_to_regnum_or_error): Rename from
	translate_register.  Now public.
	(dwarf2_compile_expr_to_ax): Update.
This commit is contained in:
Jan Kratochvil
2014-05-14 14:30:37 -06:00
parent af945b7535
commit d064d1bef5
3 changed files with 22 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
gdb/ChangeLog
View File

@ -1,3 +1,10 @@
2014-12-12 Jan Kratochvil <jan.kratochvil@redhat.com>
* dwarf2loc.h (dwarf2_reg_to_regnum_or_error): Declare.
* dwarf2loc.c (dwarf2_reg_to_regnum_or_error): Rename from
translate_register. Now public.
(dwarf2_compile_expr_to_ax): Update.
2014-12-12 Tom Tromey <tromey@redhat.com> 2014-12-12 Tom Tromey <tromey@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com> Jan Kratochvil <jan.kratochvil@redhat.com>

18
gdb/dwarf2loc.c
View File

@ -2707,14 +2707,10 @@ unimplemented (unsigned int op)
op); op);
} }
/* A helper function to convert a DWARF register to an arch register. /* See dwarf2loc.h. */
ARCH is the architecture.
DWARF_REG is the register.
This will throw an exception if the DWARF register cannot be
translated to an architecture register. */
static int int
translate_register (struct gdbarch *arch, int dwarf_reg) dwarf2_reg_to_regnum_or_error (struct gdbarch *arch, int dwarf_reg)
{ {
int reg = gdbarch_dwarf2_reg_to_regnum (arch, dwarf_reg); int reg = gdbarch_dwarf2_reg_to_regnum (arch, dwarf_reg);
if (reg == -1) if (reg == -1)
@ -2965,14 +2961,14 @@ dwarf2_compile_expr_to_ax (struct agent_expr *expr, struct axs_value *loc,
case DW_OP_reg30: case DW_OP_reg30:
case DW_OP_reg31: case DW_OP_reg31:
dwarf_expr_require_composition (op_ptr, op_end, "DW_OP_regx"); dwarf_expr_require_composition (op_ptr, op_end, "DW_OP_regx");
loc->u.reg = translate_register (arch, op - DW_OP_reg0); loc->u.reg = dwarf2_reg_to_regnum_or_error (arch, op - DW_OP_reg0);
loc->kind = axs_lvalue_register; loc->kind = axs_lvalue_register;
break; break;
case DW_OP_regx: case DW_OP_regx:
op_ptr = safe_read_uleb128 (op_ptr, op_end, &reg); op_ptr = safe_read_uleb128 (op_ptr, op_end, &reg);
dwarf_expr_require_composition (op_ptr, op_end, "DW_OP_regx"); dwarf_expr_require_composition (op_ptr, op_end, "DW_OP_regx");
loc->u.reg = translate_register (arch, reg); loc->u.reg = dwarf2_reg_to_regnum_or_error (arch, reg);
loc->kind = axs_lvalue_register; loc->kind = axs_lvalue_register;
break; break;
@ -3035,7 +3031,7 @@ dwarf2_compile_expr_to_ax (struct agent_expr *expr, struct axs_value *loc,
case DW_OP_breg30: case DW_OP_breg30:
case DW_OP_breg31: case DW_OP_breg31:
op_ptr = safe_read_sleb128 (op_ptr, op_end, &offset); op_ptr = safe_read_sleb128 (op_ptr, op_end, &offset);
i = translate_register (arch, op - DW_OP_breg0); i = dwarf2_reg_to_regnum_or_error (arch, op - DW_OP_breg0);
ax_reg (expr, i); ax_reg (expr, i);
if (offset != 0) if (offset != 0)
{ {
@ -3047,7 +3043,7 @@ dwarf2_compile_expr_to_ax (struct agent_expr *expr, struct axs_value *loc,
{ {
op_ptr = safe_read_uleb128 (op_ptr, op_end, &reg); op_ptr = safe_read_uleb128 (op_ptr, op_end, &reg);
op_ptr = safe_read_sleb128 (op_ptr, op_end, &offset); op_ptr = safe_read_sleb128 (op_ptr, op_end, &offset);
i = translate_register (arch, reg); i = dwarf2_reg_to_regnum_or_error (arch, reg);
ax_reg (expr, i); ax_reg (expr, i);
if (offset != 0) if (offset != 0)
{ {

8
gdb/dwarf2loc.h
View File

@ -222,4 +222,12 @@ extern struct call_site_chain *call_site_find_chain (struct gdbarch *gdbarch,
CORE_ADDR caller_pc, CORE_ADDR caller_pc,
CORE_ADDR callee_pc); CORE_ADDR callee_pc);
/* A helper function to convert a DWARF register to an arch register.
ARCH is the architecture.
DWARF_REG is the register.
This will throw an exception if the DWARF register cannot be
translated to an architecture register. */
extern int dwarf2_reg_to_regnum_or_error (struct gdbarch *arch, int dwarf_reg);
#endif /* dwarf2loc.h */ #endif /* dwarf2loc.h */