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25 .\" $Id: dwarf_add_expr_gen.3 2072 2011-10-27 03:26:49Z jkoshy $
29 .Dt DWARF_ADD_EXPR_GEN 3
31 .Nm dwarf_add_expr_gen
32 .Nd add an operator to a location expression descriptor
38 .Fo dwarf_add_expr_gen
39 .Fa "Dwarf_P_Expr expr"
40 .Fa "Dwarf_Small opcode"
41 .Fa "Dwarf_Unsigned val1"
42 .Fa "Dwarf_Unsigned val2"
43 .Fa "Dwarf_Error *err"
47 .Fn dwarf_add_expr_gen
48 adds a location expression operator to the location expression
49 descriptor referenced by argument
54 should reference a location expression descriptor allocated using
56 .Xr dwarf_new_expr 3 .
60 specifies the operation code of the location expression operator.
61 Valid values for this argument are those denoted by the
68 operation, application code should instead use
69 .Xr dwarf_add_expr_addr_b 3 .
73 specifies the first operand of the location expression operator.
77 specifies the second operand of the location expression operator.
81 is not NULL, it will be used to store error information in case
85 .Fn dwarf_add_expr_gen
86 returns the size in bytes of the location expression byte stream
88 In case of an error, function
89 .Fn dwarf_add_expr_gen
96 .Fn dwarf_add_expr_gen
98 .Bl -tag -width ".Bq Er DW_DLE_LOC_EXPR_BAD"
99 .It Bq Er DW_DLE_ARGUMENT
103 .It Bq Er DW_DLE_LOC_EXPR_BAD
104 The operation code specified in argument
107 .It Bq Er DW_DLE_MEMORY
108 An out of memory condition was encountered during the execution of
113 .Xr dwarf_add_AT_location_expr 3 ,
114 .Xr dwarf_add_expr_addr 3 ,
115 .Xr dwarf_add_expr_addr_b 3 ,
116 .Xr dwarf_expr_current_offset 3 ,
117 .Xr dwarf_expr_into_block 3 ,