diff options
Diffstat (limited to 'gdb/ax-gdb.h')
| -rw-r--r-- | gdb/ax-gdb.h | 57 |
1 files changed, 26 insertions, 31 deletions
diff --git a/gdb/ax-gdb.h b/gdb/ax-gdb.h index 4658428..3192d4d 100644 --- a/gdb/ax-gdb.h +++ b/gdb/ax-gdb.h @@ -19,7 +19,7 @@ #ifndef AX_GDB_H #define AX_GDB_H -#include "ax.h" /* For agent_expr_up. */ +#include "ax.h" /* For agent_expr_up. */ struct expression; @@ -48,52 +48,49 @@ struct expression; this is all static analysis of the expression, i.e. analysis which doesn't depend on the contents of memory and registers. */ - /* Different kinds of agent expression static values. */ enum axs_lvalue_kind - { - /* We generated code to compute the subexpression's value. +{ + /* We generated code to compute the subexpression's value. Constants and arithmetic operators yield this. */ - axs_rvalue, + axs_rvalue, - /* We generated code to yield the subexpression's value's address on + /* We generated code to yield the subexpression's value's address on the top of the stack. If the caller needs an rvalue, it should call require_rvalue to produce the rvalue from this address. */ - axs_lvalue_memory, + axs_lvalue_memory, - /* We didn't generate any code, and the stack is undisturbed, + /* We didn't generate any code, and the stack is undisturbed, because the subexpression's value lives in a register; u.reg is the register number. If the caller needs an rvalue, it should call require_rvalue to produce the rvalue from this register number. */ - axs_lvalue_register - }; + axs_lvalue_register +}; /* Structure describing what we got from a subexpression. Think of this as parallel to value.h's enum lval_type, except that we're describing a value which will exist when the expression is evaluated in the future, not a value we have in our hand. */ struct axs_value - { - enum axs_lvalue_kind kind; /* see above */ +{ + enum axs_lvalue_kind kind; /* see above */ - /* The type of the subexpression. Even if lvalue == axs_lvalue_memory, + /* The type of the subexpression. Even if lvalue == axs_lvalue_memory, this is the type of the value itself; the value on the stack is a "pointer to" an object of this type. */ - struct type *type; + struct type *type; - /* If nonzero, this is a variable which does not actually exist in + /* If nonzero, this is a variable which does not actually exist in the program. */ - char optimized_out; + char optimized_out; - union - { - /* if kind == axs_lvalue_register, this is the register number */ - int reg; - } - u; - }; - + union + { + /* if kind == axs_lvalue_register, this is the register number */ + int reg; + } u; +}; /* Translating GDB expressions into agent expressions. */ @@ -102,14 +99,12 @@ struct axs_value record the value of all memory touched by the expression, and leave no values on the stack. The caller can then use the ax_reqs function to discover which registers the expression uses. */ -extern agent_expr_up gen_trace_for_expr (CORE_ADDR, struct expression *, - int); +extern agent_expr_up gen_trace_for_expr (CORE_ADDR, struct expression *, int); extern agent_expr_up gen_trace_for_var (CORE_ADDR, struct gdbarch *, struct symbol *, int); -extern agent_expr_up gen_trace_for_return_address (CORE_ADDR, - struct gdbarch *, +extern agent_expr_up gen_trace_for_return_address (CORE_ADDR, struct gdbarch *, int); extern agent_expr_up gen_eval_for_expr (CORE_ADDR, struct expression *); @@ -119,8 +114,8 @@ extern void gen_expr (struct expression *exp, union exp_element **pc, extern void require_rvalue (struct agent_expr *ax, struct axs_value *value); -extern agent_expr_up gen_printf (CORE_ADDR, struct gdbarch *, - CORE_ADDR, LONGEST, const char *, int, - int, struct expression **); +extern agent_expr_up gen_printf (CORE_ADDR, struct gdbarch *, CORE_ADDR, + LONGEST, const char *, int, int, + struct expression **); #endif /* AX_GDB_H */ |