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[Qemu-devel] [PATCH] target-ppc: add support for reading/writing spefscr
From: |
Nathan Froyd |
Subject: |
[Qemu-devel] [PATCH] target-ppc: add support for reading/writing spefscr |
Date: |
Sat, 13 Dec 2008 20:14:03 -0800 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
As well as reading/writing the CPU's idea of what spefscr is, this patch
also adds support for reading/writing it in user mode.
Signed-off-by: Nathan Froyd <address@hidden>
---
target-ppc/translate.c | 4 ++++
target-ppc/translate_init.c | 21 +++++++++++++++------
2 files changed, 19 insertions(+), 6 deletions(-)
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index e2d6f42..82f1b9c 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -69,6 +69,7 @@ static TCGv cpu_lr;
static TCGv cpu_xer;
static TCGv cpu_reserve;
static TCGv_i32 cpu_fpscr;
+static TCGv_i32 cpu_spefscr;
static TCGv_i32 cpu_access_type;
#include "gen-icount.h"
@@ -152,6 +153,9 @@ void ppc_translate_init(void)
cpu_fpscr = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUState, fpscr), "fpscr");
+ cpu_spefscr = tcg_global_mem_new_i32(TCG_AREG0,
+ offsetof(CPUState, spe_fscr),
"spefscr");
+
cpu_access_type = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUState, access_type),
"access_type");
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index 0ce81ed..60838aa 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -434,6 +434,17 @@ static void spr_write_pir (void *opaque, int sprn, int
gprn)
}
#endif
+/* SPE specific registers */
+static void spr_read_spefscr (void *opaque, int gprn, int sprn)
+{
+ tcg_gen_mov_tl(cpu_gpr[gprn], cpu_spefscr);
+}
+
+static void spr_write_spefscr (void *opaque, int sprn, int gprn)
+{
+ tcg_gen_mov_tl(cpu_spefscr, cpu_gpr[gprn]);
+}
+
#if !defined(CONFIG_USER_ONLY)
/* Callback used to write the exception vector base */
static void spr_write_excp_prefix (void *opaque, int sprn, int gprn)
@@ -3995,10 +4006,9 @@ static void init_proc_e200 (CPUPPCState *env)
/* Time base */
gen_tbl(env);
gen_spr_BookE(env, 0x000000070000FFFFULL);
- /* XXX : not implemented */
spr_register(env, SPR_BOOKE_SPEFSCR, "SPEFSCR",
- SPR_NOACCESS, SPR_NOACCESS,
- &spr_read_generic, &spr_write_generic,
+ &spr_read_spefscr, &spr_write_spefscr,
+ &spr_read_spefscr, &spr_write_spefscr,
0x00000000);
/* Memory management */
gen_spr_BookE_FSL(env, 0x0000005D);
@@ -4165,10 +4175,9 @@ static void init_proc_e500 (CPUPPCState *env)
SPR_NOACCESS, SPR_NOACCESS,
&spr_read_generic, &spr_write_pir,
0x00000000);
- /* XXX : not implemented */
spr_register(env, SPR_BOOKE_SPEFSCR, "SPEFSCR",
- SPR_NOACCESS, SPR_NOACCESS,
- &spr_read_generic, &spr_write_generic,
+ &spr_read_spefscr, &spr_write_spefscr,
+ &spr_read_spefscr, &spr_write_spefscr,
0x00000000);
/* Memory management */
#if !defined(CONFIG_USER_ONLY)
--
1.6.0.5
- [Qemu-devel] [PATCH] target-ppc: add support for reading/writing spefscr,
Nathan Froyd <=