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| author | Nikola Prica <nikola.prica@rt-rk.com> | 2018-01-31 19:23:00 +0100 |
|---|---|---|
| committer | Ulrich Weigand <ulrich.weigand@de.ibm.com> | 2018-01-31 19:24:05 +0100 |
| commit | 07e5f5cf883c64f7bd8a2afa4302c0479670b03f (patch) | |
| tree | 3b59a87618ed85c6e52bbfab2affa269ef144dc0 /gdb/rs6000-tdep.c | |
| parent | 450b6317357b67dfcd0ab951a83432d3fc2a65bc (diff) | |
| download | gdb-07e5f5cf883c64f7bd8a2afa4302c0479670b03f.zip gdb-07e5f5cf883c64f7bd8a2afa4302c0479670b03f.tar.gz gdb-07e5f5cf883c64f7bd8a2afa4302c0479670b03f.tar.bz2 | |
Fix for prologue processing on PowerPC
One of conditions in skip_prologue() was never visited if there was mflr
instruction that moves the link register to a register different than r0.
This condition expects non shifted value of `lr_reg`. Previously offset
of link register was never saved for registers different than r0.
gdb/ChangeLog:
2018-01-31 Nikola Prica <nikola.prica@rt-rk.com>
* rs6000-tdep.c (skip_prologue): Remove shifting for lr_reg and
assign shifted lr_reg to fdata->lr_register when lr_reg is set.
gdb/testsuite/ChangeLog:
2018-01-31 Nikola Prica <nikola.prica@rt-rk.com>
* gdb.arch/powerpc-prologue-frame.s: New file.
* gdb.arch/powerpc-prologue-frame.c: Likewise.
* gdb.arch/powerpc-prologue-frame.exp: Likewise.
Diffstat (limited to 'gdb/rs6000-tdep.c')
| -rw-r--r-- | gdb/rs6000-tdep.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c index 3ec3817..794605f 100644 --- a/gdb/rs6000-tdep.c +++ b/gdb/rs6000-tdep.c @@ -1654,7 +1654,7 @@ skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc, CORE_ADDR lim_pc, remember just the first one, but skip over additional ones. */ if (lr_reg == -1) - lr_reg = (op & 0x03e00000) >> 21; + lr_reg = (op & 0x03e00000); if (lr_reg == 0) r0_contains_arg = 0; continue; @@ -2180,7 +2180,7 @@ skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc, CORE_ADDR lim_pc, #endif /* 0 */ if (pc == lim_pc && lr_reg >= 0) - fdata->lr_register = lr_reg; + fdata->lr_register = lr_reg >> 21; fdata->offset = -fdata->offset; return last_prologue_pc; |