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target/sparc: Use memcpy() and remove memcpy32()

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Rather than manually copying each register, use
the libc memcpy(), which is well optimized nowadays.

Suggested-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20241205205418.67613-1-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2024-12-05 21:54:18 +01:00 • committed by Richard Henderson
parent a9af119f3d
commit 7ac87b14a9
1 changed files with 8 additions and 18 deletions
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26
target/sparc/win_helper.c
View file

@ -24,29 +24,19 @@
#include "exec/helper-proto.h"
#include "trace.h"
static inline void memcpy32(target_ulong *dst, const target_ulong *src)
{
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
dst[3] = src[3];
dst[4] = src[4];
dst[5] = src[5];
dst[6] = src[6];
dst[7] = src[7];
}
void cpu_set_cwp(CPUSPARCState *env, int new_cwp)
{
/* put the modified wrap registers at their proper location */
if (env->cwp == env->nwindows - 1) {
memcpy32(env->regbase, env->regbase + env->nwindows * 16);
memcpy(env->regbase, env->regbase + env->nwindows * 16,
sizeof(env->gregs));
}
env->cwp = new_cwp;
/* put the wrap registers at their temporary location */
if (new_cwp == env->nwindows - 1) {
memcpy32(env->regbase + env->nwindows * 16, env->regbase);
memcpy(env->regbase + env->nwindows * 16, env->regbase,
sizeof(env->gregs));
}
env->regwptr = env->regbase + (new_cwp * 16);
}
@ -361,8 +351,8 @@ void cpu_gl_switch_gregs(CPUSPARCState *env, uint32_t new_gl)
dst = get_gl_gregset(env, env->gl);
if (src != dst) {
memcpy32(dst, env->gregs);
memcpy32(env->gregs, src);
memcpy(dst, env->gregs, sizeof(env->gregs));
memcpy(env->gregs, src, sizeof(env->gregs));
}
}
@ -393,8 +383,8 @@ void cpu_change_pstate(CPUSPARCState *env, uint32_t new_pstate)
/* Switch global register bank */
src = get_gregset(env, new_pstate_regs);
dst = get_gregset(env, pstate_regs);
memcpy32(dst, env->gregs);
memcpy32(env->gregs, src);
memcpy(dst, env->gregs, sizeof(env->gregs));
memcpy(env->gregs, src, sizeof(env->gregs));
} else {
trace_win_helper_no_switch_pstate(new_pstate_regs);
}