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authorSong Gao <gaosong@loongson.cn>2023-11-01 11:08:16 +0800
committerSong Gao <gaosong@loongson.cn>2023-11-03 14:13:46 +0800
commitf7077737531b40aa879d4644837aeda0f7fc6aa8 (patch)
treeca358440b49188982486bca10d70e5ee7707737f /linux-user
parent90ea967d149b2b3420f41ecbd0909be1f902bd2b (diff)
linux-user/loongarch64: Add LASX sigcontext save/restore
Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231101030816.2353416-7-gaosong@loongson.cn>
Diffstat (limited to 'linux-user')
-rw-r--r--linux-user/loongarch64/signal.c68
1 files changed, 62 insertions, 6 deletions
diff --git a/linux-user/loongarch64/signal.c b/linux-user/loongarch64/signal.c
index 9c9b446a91..39ea82c814 100644
--- a/linux-user/loongarch64/signal.c
+++ b/linux-user/loongarch64/signal.c
@@ -49,6 +49,14 @@ struct target_lsx_context {
abi_uint fcsr;
} QEMU_ALIGNED(LSX_CTX_ALIGN);
+#define LASX_CTX_MAGIC 0x41535801
+#define LASX_CTX_ALIGN 32
+struct target_lasx_context {
+ abi_ulong regs[4 * 32];
+ abi_ulong fcc;
+ abi_uint fcsr;
+} QEMU_ALIGNED(LASX_CTX_ALIGN);
+
#define CONTEXT_INFO_ALIGN 16
struct target_sctx_info {
abi_uint magic;
@@ -93,6 +101,7 @@ struct extctx_layout {
unsigned int flags;
struct ctx_layout fpu;
struct ctx_layout lsx;
+ struct ctx_layout lasx;
struct ctx_layout end;
};
@@ -125,10 +134,12 @@ static abi_ptr setup_extcontext(CPULoongArchState *env,
/* For qemu, there is no lazy fp context switch, so fp always present. */
extctx->flags = SC_USED_FP;
- if (FIELD_EX64(env->CSR_EUEN, CSR_EUEN, SXE)) {
+ if (FIELD_EX64(env->CSR_EUEN, CSR_EUEN, ASXE)) {
+ sp = extframe_alloc(extctx, &extctx->lasx,
+ sizeof(struct target_lasx_context), LASX_CTX_ALIGN, sp);
+ } else if (FIELD_EX64(env->CSR_EUEN, CSR_EUEN, SXE)) {
sp = extframe_alloc(extctx, &extctx->lsx,
sizeof(struct target_lsx_context), LSX_CTX_ALIGN, sp);
-
} else {
sp = extframe_alloc(extctx, &extctx->fpu,
sizeof(struct target_fpu_context), FPU_CTX_ALIGN, sp);
@@ -155,7 +166,24 @@ static void setup_sigframe(CPULoongArchState *env,
* Set extension context
*/
- if (FIELD_EX64(env->CSR_EUEN, CSR_EUEN, SXE)) {
+ if (FIELD_EX64(env->CSR_EUEN, CSR_EUEN, ASXE)) {
+ struct target_lasx_context *lasx_ctx;
+ info = extctx->lasx.haddr;
+
+ __put_user(LASX_CTX_MAGIC, &info->magic);
+ __put_user(extctx->lasx.size, &info->size);
+
+ lasx_ctx = (struct target_lasx_context *)(info + 1);
+
+ for (i = 0; i < 32; ++i) {
+ __put_user(env->fpr[i].vreg.UD(0), &lasx_ctx->regs[4 * i]);
+ __put_user(env->fpr[i].vreg.UD(1), &lasx_ctx->regs[4 * i + 1]);
+ __put_user(env->fpr[i].vreg.UD(2), &lasx_ctx->regs[4 * i + 2]);
+ __put_user(env->fpr[i].vreg.UD(3), &lasx_ctx->regs[4 * i + 3]);
+ }
+ __put_user(read_fcc(env), &lasx_ctx->fcc);
+ __put_user(env->fcsr0, &lasx_ctx->fcsr);
+ } else if (FIELD_EX64(env->CSR_EUEN, CSR_EUEN, SXE)) {
struct target_lsx_context *lsx_ctx;
info = extctx->lsx.haddr;
@@ -230,6 +258,15 @@ static bool parse_extcontext(struct extctx_layout *extctx, abi_ptr frame)
extctx->lsx.size = size;
extctx->size += size;
break;
+ case LASX_CTX_MAGIC:
+ if (size < (sizeof(struct target_sctx_info) +
+ sizeof(struct target_lasx_context))) {
+ return false;
+ }
+ extctx->lasx.gaddr = frame;
+ extctx->lasx.size = size;
+ extctx->size += size;
+ break;
default:
return false;
}
@@ -250,7 +287,21 @@ static void restore_sigframe(CPULoongArchState *env,
__get_user(env->gpr[i], &sc->sc_regs[i]);
}
- if (extctx->lsx.haddr) {
+ if (extctx->lasx.haddr) {
+ struct target_lasx_context *lasx_ctx =
+ extctx->lasx.haddr + sizeof(struct target_sctx_info);
+
+ for (i = 0; i < 32; ++i) {
+ __get_user(env->fpr[i].vreg.UD(0), &lasx_ctx->regs[4 * i]);
+ __get_user(env->fpr[i].vreg.UD(1), &lasx_ctx->regs[4 * i + 1]);
+ __get_user(env->fpr[i].vreg.UD(2), &lasx_ctx->regs[4 * i + 2]);
+ __get_user(env->fpr[i].vreg.UD(3), &lasx_ctx->regs[4 * i + 3]);
+ }
+ __get_user(fcc, &lasx_ctx->fcc);
+ write_fcc(env, fcc);
+ __get_user(env->fcsr0, &lasx_ctx->fcsr);
+ restore_fp_status(env);
+ } else if (extctx->lsx.haddr) {
struct target_lsx_context *lsx_ctx =
extctx->lsx.haddr + sizeof(struct target_sctx_info);
@@ -314,7 +365,10 @@ void setup_rt_frame(int sig, struct target_sigaction *ka,
return;
}
- if (FIELD_EX64(env->CSR_EUEN, CSR_EUEN, SXE)) {
+ if (FIELD_EX64(env->CSR_EUEN, CSR_EUEN, ASXE)) {
+ extctx.lasx.haddr = (void *)frame + (extctx.lasx.gaddr - frame_addr);
+ extctx.end.haddr = (void *)frame + (extctx.end.gaddr - frame_addr);
+ } else if (FIELD_EX64(env->CSR_EUEN, CSR_EUEN, SXE)) {
extctx.lsx.haddr = (void *)frame + (extctx.lsx.gaddr - frame_addr);
extctx.end.haddr = (void *)frame + (extctx.end.gaddr - frame_addr);
} else {
@@ -364,7 +418,9 @@ long do_rt_sigreturn(CPULoongArchState *env)
goto badframe;
}
- if (extctx.lsx.gaddr) {
+ if (extctx.lasx.gaddr) {
+ extctx.lasx.haddr = (void *)frame + (extctx.lasx.gaddr - frame_addr);
+ } else if (extctx.lsx.gaddr) {
extctx.lsx.haddr = (void *)frame + (extctx.lsx.gaddr - frame_addr);
} else if (extctx.fpu.gaddr) {
extctx.fpu.haddr = (void *)frame + (extctx.fpu.gaddr - frame_addr);