sh: unwinder: Set the flags for DW_CFA_val_offset ops as DWARF_VAL_OFFSET
The handling of DW_CFA_val_offset ops was incorrectly using the DWARF_REG_OFFSET flag but the register's value cannot be calculated using the DWARF_REG_OFFSET method. Create a new flag to indicate that a different method must be used to calculate the register's value even though there is no implementation for DWARF_VAL_OFFSET yet; it's mainly just a place holder. Signed-off-by: Matt Fleming <matt@console-pimps.org>
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@ -296,6 +296,7 @@ struct dwarf_reg {
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unsigned long addr;
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unsigned long flags;
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#define DWARF_REG_OFFSET (1 << 0)
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#define DWARF_VAL_OFFSET (1 << 1)
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};
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/*
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@ -11,6 +11,7 @@
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*
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* TODO:
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* - DWARF64 doesn't work.
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* - Registers with DWARF_VAL_OFFSET rules aren't handled properly.
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*/
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/* #define DEBUG */
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@ -499,7 +500,7 @@ static int dwarf_cfa_execute_insns(unsigned char *insn_start,
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count = dwarf_read_leb128(current_insn, &offset);
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offset *= cie->data_alignment_factor;
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regp = dwarf_frame_alloc_reg(frame, reg);
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regp->flags |= DWARF_REG_OFFSET;
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regp->flags |= DWARF_VAL_OFFSET;
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regp->addr = offset;
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break;
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case DW_CFA_GNU_args_size:
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