diff options
Diffstat (limited to 'gdb/mips-tdep.c')
| -rw-r--r-- | gdb/mips-tdep.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c index 81f2d7d..e6df5f5 100644 --- a/gdb/mips-tdep.c +++ b/gdb/mips-tdep.c @@ -454,7 +454,16 @@ mips_register_name (struct gdbarch *gdbarch, int regno) enum mips_abi abi = mips_abi (gdbarch); /* Map [gdbarch_num_regs .. 2*gdbarch_num_regs) onto the raw registers, - but then don't make the raw register names visible. */ + but then don't make the raw register names visible. This (upper) + range of user visible register numbers are the pseudo-registers. + + This approach was adopted accommodate the following scenario: + It is possible to debug a 64-bit device using a 32-bit + programming model. In such instances, the raw registers are + configured to be 64-bits wide, while the pseudo registers are + configured to be 32-bits wide. The registers that the user + sees - the pseudo registers - match the users expectations + given the programming model being used. */ int rawnum = regno % gdbarch_num_regs (gdbarch); if (regno < gdbarch_num_regs (gdbarch)) return ""; |