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binutils-gdb
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* mild gx prototype tweak 

start-sanitize-gxsim
1998-11-21  Frank Ch. Eigler  <fche@elastic.org>
	* sim-gx.c (sim_gx_block_translate): Generate computed
	goto for __GNUC__ instead of plain switch() for gx block
	entry.  Lose "-g" compile option for gx block.
end-sanitize-gxsim
This commit is contained in:
Frank Ch. Eigler 1998-11-21 19:05:09 +00:00
parent 821b702f92
commit 42647d5b8c
2 changed files with 48 additions and 4 deletions
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8
sim/common/ChangeLog
View File

@ -1,3 +1,11 @@
start-sanitize-gxsim
1998-11-21 Frank Ch. Eigler <fche@elastic.org>
* sim-gx.c (sim_gx_block_translate): Generate computed
goto for __GNUC__ instead of plain switch() for gx block
entry. Lose "-g" compile option for gx block.
end-sanitize-gxsim
1998-11-18 Doug Evans <devans@casey.cygnus.com> 1998-11-18 Doug Evans <devans@casey.cygnus.com>
* Make-common.in (cgen-utils.o): Depend on cgen-engine.h. * Make-common.in (cgen-utils.o): Depend on cgen-engine.h.

44
sim/common/sim-gx.c
View File

@ -7,7 +7,6 @@
#include "sim-gx.h" #include "sim-gx.h"
#include "config.h" #include "config.h"
/* #include "cconfig.h" */
/* shared object functions */ /* shared object functions */
#ifdef HAVE_DLFCN_H #ifdef HAVE_DLFCN_H
@ -576,6 +575,29 @@ sim_gx_block_translate(sim_gx_block* gx, int optimized)
if(! optimized) if(! optimized)
fprintf(block->source_file, " unsigned int insn_count = 0;\n"); fprintf(block->source_file, " unsigned int insn_count = 0;\n");
/* emit threaded goto vector for __GNUC__ */
fprintf(block->source_file, "#ifdef __GNUC__\n");
fprintf(block->source_file, " static void* jump_table[] =\n");
fprintf(block->source_file, " {\n");
gx_cia = gx->origin;
while(GX_PC_INCLUDES(gx,gx_cia))
{
sim_cia next_gx_cia;
if((! optimized) ||
(GX_PC_FLAGS(gx, gx_cia) & GX_PCF_JUMPTARGET))
{
fprintf(block->source_file, " && gx_label_%ld,\n",
((gx_cia - gx->origin) / gx->divisor));
}
else
{
fprintf(block->source_file, " && gx_label_default,\n");
}
gx_cia = gx_cia + gx->divisor;
}
fprintf(block->source_file, " };\n");
fprintf(block->source_file, "#endif /*__GNUC__*/\n");
/* pre-block gunk: register load */ /* pre-block gunk: register load */
tgx_emit_load_block(gx, optimized); tgx_emit_load_block(gx, optimized);
@ -605,13 +627,22 @@ sim_gx_block_translate(sim_gx_block* gx, int optimized)
/* emit PC switch, use compressed case numbers */ /* emit PC switch, use compressed case numbers */
fprintf(block->source_file, "\n"); fprintf(block->source_file, "\n");
fprintf(block->source_file, "#ifdef __GNUC__\n");
fprintf(block->source_file, " goto * jump_table[((pc - 0x%08x) / %u)];\n",
(unsigned)gx->origin, gx->divisor);
fprintf(block->source_file, "#else /* ! __GNUC__*/\n");
fprintf(block->source_file, " switch((pc - 0x%08x) / %u)\n", fprintf(block->source_file, " switch((pc - 0x%08x) / %u)\n",
(unsigned)gx->origin, gx->divisor); (unsigned)gx->origin, gx->divisor);
fprintf(block->source_file, "#endif /*__GNUC__*/\n");
fprintf(block->source_file, " {\n"); fprintf(block->source_file, " {\n");
/* handle bad-PC event */ /* handle bad-PC event */
fprintf(block->source_file, " /* handle unknown jump target */\n"); fprintf(block->source_file, " /* handle unknown jump target */\n");
fprintf(block->source_file, "#ifdef __GNUC__\n");
fprintf(block->source_file, " gx_label_default:\n");
fprintf(block->source_file, "#else /* ! __GNUC__*/\n");
fprintf(block->source_file, " default:\n"); fprintf(block->source_file, " default:\n");
fprintf(block->source_file, "#endif /*__GNUC__*/\n");
fprintf(block->source_file, " rc = %d;\n", GX_F_NONPC); fprintf(block->source_file, " rc = %d;\n", GX_F_NONPC);
fprintf(block->source_file, " npc = pc;\n"); fprintf(block->source_file, " npc = pc;\n");
fprintf(block->source_file, " goto save;\n"); fprintf(block->source_file, " goto save;\n");
@ -653,8 +684,13 @@ sim_gx_block_translate(sim_gx_block* gx, int optimized)
if((! optimized) || if((! optimized) ||
(GX_PC_FLAGS(gx, gx_cia) & GX_PCF_JUMPTARGET)) (GX_PC_FLAGS(gx, gx_cia) & GX_PCF_JUMPTARGET))
{ {
fprintf(block->source_file, "#ifdef __GNUC__\n");
fprintf(block->source_file, " gx_label_%ld:\n",
((gx_cia - gx->origin) / gx->divisor));
fprintf(block->source_file, "#else /* ! __GNUC__*/\n");
fprintf(block->source_file, " case %ld:\n", fprintf(block->source_file, " case %ld:\n",
((gx_cia - gx->origin) / gx->divisor)); ((gx_cia - gx->origin) / gx->divisor));
fprintf(block->source_file, "#endif /*__GNUC__*/\n");
} }
/* translate breakpoint check & exit */ /* translate breakpoint check & exit */
@ -732,8 +768,8 @@ sim_gx_block_translate(sim_gx_block* gx, int optimized)
/* compile source & produce shared object */ /* compile source & produce shared object */
sprintf(compile_command, sprintf(compile_command,
"gxtool --silent --mode=compile gcc -c -g %s %s", "gxtool --silent --mode=compile gcc -c %s %s",
(optimized ? "-O3" : "-O"), block->source_name); (optimized ? "-O9 -fomit-frame-pointer" : "-O"), block->source_name);
rc = system(compile_command); rc = system(compile_command);
if(rc != 0) if(rc != 0)
@ -745,7 +781,7 @@ sim_gx_block_translate(sim_gx_block* gx, int optimized)
/* link source */ /* link source */
sprintf(compile_command, sprintf(compile_command,
"gxtool --silent --mode=link gcc -export-dynamic -rpath %s -g -o lib%s.la %s.lo", "gxtool --silent --mode=link gcc -export-dynamic -rpath %s -o lib%s.la %s.lo",
dir_name, base_name, base_name); dir_name, base_name, base_name);
rc = system(compile_command); rc = system(compile_command);