Change data ordering in emulated memory from target order (big endian)
to host order. Improves performance and simplifies most memory
operations. Requires some byte twisting during stores on little
endian hosts (intel). Also removed support for little-endian binaries.
Binaries produced by most erc32 tool-chains do not include
system initialization. sis will detect this and initialize
necessary registers for memory and timer control.
This removes the last uses of PARAMS from sim.
2014-01-06 Tom Tromey <tromey@redhat.com>
* README-HACKING: Don't use PARAMS.
* arm/wrapper.c: Don't use PARAMS.
* bfin/sim-main.h: Don't use PARAMS.
* common/callback.c: Don't use PARAMS.
* common/cgen-trace.c: Don't use PARAMS.
* common/run-sim.h: Don't use PARAMS.
* common/run.c: Don't use PARAMS.
* common/sim-base.h: Don't use PARAMS.
* common/sim-load.c: Don't use PARAMS.
* common/sim-options.h: Don't use PARAMS.
* common/sim-trace.c: Don't use PARAMS.
* common/sim-trace.h: Don't use PARAMS.
* common/sim-utils.h: Don't use PARAMS.
* cr16/cr16_sim.h: Don't use PARAMS.
* cr16/gencode.c: Don't use PARAMS.
* cr16/interp.c: Don't use PARAMS.
* cr16/simops.c: Don't use PARAMS.
* d10v/d10v_sim.h: Don't use PARAMS.
* d10v/gencode.c: Don't use PARAMS.
* d10v/interp.c: Don't use PARAMS.
* d10v/simops.c: Don't use PARAMS.
* erc32/erc32.c: Don't use PARAMS.
* erc32/exec.c: Don't use PARAMS.
* erc32/float.c: Don't use PARAMS.
* erc32/func.c: Don't use PARAMS.
* erc32/sis.c: Don't use PARAMS.
* erc32/sis.h: Don't use PARAMS.
* mips/interp.c: Don't use PARAMS.
* mips/sim-main.h: Don't use PARAMS.
* sh/interp.c: Don't use PARAMS.
* v850/sim-main.h: Don't use PARAMS.
* v850/v850_sim.h: Don't use PARAMS.
* erc32.c (sis_memory_write): Change prototype to const unsigned char *.
* func.c (exec_cmd, event, advance_time, wait_for_irq): Use uint64
for counts.
* interf.c (run_sim): Change icount to uint64_t. Use strtol directly.
(sim_resume): Specify maximum run time as uint64.
* sis.c (run_sim): Change icount to uint64_t.
* sis.h: Define uint64 as uint64_t. Change various fields and
prototypes to uint64 to support longer simulations.
* sim/erc32/float.c (set_fsr): Do not use deprecated multi-line
strings.
(clear_accex): Ditto.
* sim/erc32/interf.c: Remove the redeclaration of fprintf.
* sim/erc32/sis.c: Ditto.
* sim/erc32/exec.c: Add missing semicolon.
* sim/erc32/func.c: Remove definitions of generic_print_address,
generic_symbol_at_address, buffer_read_memory and perror_memory, as
they are already defined in opcodes/dis-buf.c.
byte-swapping unnecessary. Add -sparclite-board option for
emulating RAM found on typical SPARClite boards. Print
error message for unrecognized option.
* erc32.c: Change RAM address and size from constants to variables,
to allow emulation of SPARClite board RAM.
(fetch_bytes, store_bytes): New helper functions for revamped
mememory_read and memory_write.
(memory_read, memory_write): Rewrite to store bytes in target
byte order instead of storing words in host byte order; this
greatly simplifies support of little-endian programs.
(get_mem_ptr): Remove unnecessary byte parameter.
(sis_memory_write, sis_memory_read): Store words in target
byte order instead of host byte order.
(byte_swap_words): Remove, no longer needed.
* sis.h ((byte_swap_words): Remove declaration, no longer needed.
(memory_read): Add new sz parameter.
* sis.c (run_sim): Use revamped memory_read, which makes
byte-swapping unnecessary.
* exec.c (dispatch_instruction): Use revamped memory_read, which
makes byte-swapping and double-word fetching unnecessary.
* func.c (sparclite_board): Declare new variable.
(get_regi): Handle little-endian data.
(bfd_load): Recognize little-endian SPARClite as having
little-endian data.
