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Diffstat (limited to 'gdb/doc/gdb.texinfo')
| -rw-r--r-- | gdb/doc/gdb.texinfo | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index c99f5a4..a8c854e 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -13849,8 +13849,8 @@ specified by the extension to support decimal floating-point arithmetic. There are two encodings in use, depending on the architecture: BID (Binary Integer Decimal) for x86 and x86-64, and DPD (Densely Packed Decimal) for -PowerPC. @value{GDBN} will use the appropriate encoding for the configured -target. +PowerPC and S/390. @value{GDBN} will use the appropriate encoding for the +configured target. Because of a limitation in @file{libdecnumber}, the library used by @value{GDBN} to manipulate decimal floating point numbers, it is not possible to convert @@ -42470,6 +42470,7 @@ registers using the capitalization used in the description. * M68K Features:: * Nios II Features:: * PowerPC Features:: +* S/390 and System z Features:: * TIC6x Features:: @end menu @@ -42659,6 +42660,39 @@ contain registers @samp{ev0h} through @samp{ev31h}, @samp{acc}, and these to present registers @samp{ev0} through @samp{ev31} to the user. +@node S/390 and System z Features +@subsection S/390 and System z Features +@cindex target descriptions, S/390 features +@cindex target descriptions, System z features + +The @samp{org.gnu.gdb.s390.core} feature is required for S/390 and +System z targets. It should contain the PSW and the 16 general +registers. In particular, System z targets should provide the 64-bit +registers @samp{pswm}, @samp{pswa}, and @samp{r0} through @samp{r15}. +S/390 targets should provide the 32-bit versions of these registers. +A System z target that runs in 31-bit addressing mode should provide +32-bit versions of @samp{pswm} and @samp{pswa}, as well as the general +register's upper halves @samp{r0h} through @samp{r15h}, and their +lower halves @samp{r0l} through @samp{r15l}. + +The @samp{org.gnu.gdb.s390.fpr} feature is required. It should +contain the 64-bit registers @samp{f0} through @samp{f15}, and +@samp{fpc}. + +The @samp{org.gnu.gdb.s390.acr} feature is required. It should +contain the 32-bit registers @samp{acr0} through @samp{acr15}. + +The @samp{org.gnu.gdb.s390.linux} feature is optional. It should +contain the register @samp{orig_r2}, which is 64-bit wide on System z +targets and 32-bit otherwise. In addition, the feature may contain +the @samp{last_break} register, whose width depends on the addressing +mode, as well as the @samp{system_call} register, which is always +32-bit wide. + +The @samp{org.gnu.gdb.s390.tdb} feature is optional. It should +contain the 64-bit registers @samp{tdb0}, @samp{tac}, @samp{tct}, +@samp{atia}, and @samp{tr0} through @samp{tr15}. + @node TIC6x Features @subsection TMS320C6x Features @cindex target descriptions, TIC6x features |