* gdbarch.sh (breakpoint_from_pc): Add gdbarch parameter.
* gdbarch.{c,h}: Regenerate.
* xtensa-tdep.c (xtensa_breakpoint_from_pc): Add gdbarch parameter.
Replace current_gdbarch by gdbarch.
* sh-tdep.c (sh_breakpoint_from_pc): Likewise.
* sh64-tdep.c (sh64_breakpoint_from_pc): Likewise.
* score-tdep.c (score_breakpoint_from_pc): Likewise.
* mips-tdep.c (mips_breakpoint_from_pc): Likewise.
* m32r-tdep.c (m32r_breakpoint_from_pc): Likewise.
* iq2000-tdep.c (iq2000_breakpoint_from_pc): Likewise.
* arm-tdep.c (arm_breakpoint_from_pc): Likewise.
* xstormy16-tdep.c (xstormy16_breakpoint_from_pc): Add gdbarch
parameter.
* vax-tdep.c (vax_breakpoint_from_pc): Likewise.
* v850-tdep.c (v850_breakpoint_from_pc): Likewise.
* spu-tdep.c (spu_breakpoint_from_pc): Likewise.
* sparc-tdep.c (sparc_breakpoint_from_pc): Likewise.
* s390-tdep.c (s390_breakpoint_from_pc): Likewise.
* mn10300-tdep.c (mn10300_breakpoint_from_pc): Likewise.
* mt-tdep.c (mt_breakpoint_from_pc): Likewise.
* mep-tdep.c (mep_breakpoint_from_pc): Likewise.
* m88k-tdep.c (m88k_breakpoint_from_pc): Likewise.
* m68hc11-tdep.c (m68hc11_breakpoint_from_pc): Likewise.
* m32c-tdep.c (m32c_breakpoint_from_pc): Likewise.
* ia64-tdep.c (ia64_breakpoint_from_pc): Likewise.
* i386-tdep.c (i386_breakpoint_from_pc): Likewise.
* hppa-tdep.c (hppa_breakpoint_from_pc): Likewise.
* h8300-tdep.c (h8300_breakpoint_from_pc): Likewise.
* frv-tdep.c (frv_breakpoint_from_pc): Likewise.
* cris-tdep.c (cris_breakpoint_from_pc): Likewise.
* avr-tdep.c (avr_breakpoint_from_pc): Likewise.
* alpha-tdep.c (alpha_breakpoint_from_pc): Likewise.
* m68k-tdep.c (m68k_local_breakpoint_from_pc): Likewise.
* rs6000-tdep.c (rs6000_breakpoint_from_pc): Add gdbarch parameter.
Replace current_gdbarch by gdbarch.
(rs6000_software_single_step): Use get_frame_arch to get at the
current architecture by frame_info. Add gdbarch to
rs6000_breakpoint_from_pc call.