riscv/qemu - qemu - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Nathan Froyd	22555301ad	gdb-xml: fix hacks in powerpc register numbering The powerpc xml files contained a hack--an empty, non-existent register--for getting the register numbers to line up for newer (XML-aware) and older (non-XML-aware) GDB. While this hack worked in some cases, it didn't work in all cases, notably when the user used `finish' or `continue': GDB would attempt to read the non-existent register and QEMU would complain. This patch fixes things up properly. Instead of inserting a fake register, we explicitly declare the floating-point and SPE registers to start at 71. This action accomplishes the same thing as the nasty hack, except that now GDB never tries to fetch the non-existant register 70. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>	17 years ago
aurel32	d2c753454e	Work around QEMU GDB stub suboptimality The current XML files claim, on floating point-supporting Power chips, that $f0 is register 70. This would be fine, except that register 70 for non-XML-aware GDB is FPSCR. More importantly, 70 is less than NUM_CORE_REGS (71) for Power, so a request for register 70 goes to the "core" register reading routines, rather than the floating-point register read routine we registered with gdb_register_coprocessor. Therefore, when we are talking to an XML-aware GDB, we claim that register has zero width, which causes the rest of QEMU's GDB stub to send an error back to GDB, which causes GDB to be unable to read the floating-point registers. (The problem is also present for SPE registers and occurs in a slightly different way for Altivec registers.) The best way to fix this is to have the "core register" XML files for PPC32 and PPC64 claim that there is a 4-byte register 70, which causes $f0 to be register 71, and everything works just fine from that point forward. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6770 c046a42c-6fe2-441c-8c8c-71466251a162	18 years ago
pbrook	e53bd70384	The different VFP variants will never occur at the same time, and giving them different names confuses GDB, so use org.gnu.gdb.arm.vfp for all of them. Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6682 c046a42c-6fe2-441c-8c8c-71466251a162	18 years ago
aurel32	c8b3532d8a	target-ppc: Add XML files for PowerPC registers These files are nearly identical to the XML files provided with GDB. The only difference is that power-{fpu,spe}.xml do not assign register numbers; the internal QEMU machinery takes care of that. Define gdb_xml_files for ppc targets in configure as well. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6420 c046a42c-6fe2-441c-8c8c-71466251a162	18 years ago
pbrook	56aebc8916	Add GDB XML register description support. Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5459 c046a42c-6fe2-441c-8c8c-71466251a162	18 years ago