Fix bug in nios2 prologue analysis.
The nios2 prologue analyzer was mistakenly using an unsigned int field to represent a 32-bit signed value. This caused problems with an incorrect conversion being applied to negative values when they were automatically promoted for addition to a 64-bit CORE_ADDR value. This patch fixes test failures in gdb.base/large-frame.exp and gdb.dwarf2/dw2-ref-missing-frame.exp. Normally the nios2 backend prefers to use the dwarf2 unwinder so the prologue analyzer is only invoked if there is no dwarf2 information. 2019-08-23 Sandra Loosemore <sandra@codesourcery.com> gdb/ * nios2-tdep.c (struct reg_value): Improve comments. Make the offset field signed.
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2019-08-23 Sandra Loosemore <sandra@codesourcery.com>
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* nios2-tdep.c (struct reg_value): Improve comments. Make
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the offset field signed.
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2019-08-22 Christian Biesinger <cbiesinger@google.com>
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* python/lib/gdb/__init__.py (_execute_file): New function.
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@ -58,13 +58,15 @@ static int nios2_debug = 0;
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analysis; see the reg_value and reg_saved tables in
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struct nios2_unwind_cache, respectively. */
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/* struct reg_value is used to record that a register has the same value
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as reg at the given offset from the start of a function. */
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/* struct reg_value is used to record that a register has reg's initial
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value at the start of a function plus the given constant offset.
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If reg == 0, then the value is just the offset.
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If reg < 0, then the value is unknown. */
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struct reg_value
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{
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int reg;
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unsigned int offset;
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int offset;
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};
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/* struct reg_saved is used to record that a register value has been saved at
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