target/riscv/pmp: Convert qemu_log_mask(LOG_TRACE) to trace events

Use the always-compiled trace events, remove the now unused
RISCV_DEBUG_PMP definition.

Note pmpaddr_csr_read() could previously do out-of-bound accesses
passing addr_index >= MAX_RISCV_PMPS.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

target/riscv/pmp.c

@@ -27,14 +27,7 @@
 #include "qemu/log.h"
 #include "qapi/error.h"
 #include "cpu.h"
-
+#include "trace.h"
-#define RISCV_DEBUG_PMP 0
-#define PMP_DEBUG(fmt, ...)                                                    \
-    do {                                                                       \
-        if (RISCV_DEBUG_PMP) {                                                 \
-            qemu_log_mask(LOG_TRACE, "%s: " fmt "\n", __func__, ##__VA_ARGS__);\
-        }                                                                      \
-    } while (0)
 
 static void pmp_write_cfg(CPURISCVState *env, uint32_t addr_index,
     uint8_t val);
@@ -302,8 +295,7 @@ void pmpcfg_csr_write(CPURISCVState *env, uint32_t reg_index,
     int i;
     uint8_t cfg_val;
 
-    PMP_DEBUG("hart " TARGET_FMT_ld ": reg%d, val: 0x" TARGET_FMT_lx,
+    trace_pmpcfg_csr_write(env->mhartid, reg_index, val);
-        env->mhartid, reg_index, val);
 
     if ((reg_index & 1) && (sizeof(target_ulong) == 8)) {
         qemu_log_mask(LOG_GUEST_ERROR,
@@ -332,9 +324,7 @@ target_ulong pmpcfg_csr_read(CPURISCVState *env, uint32_t reg_index)
         val = pmp_read_cfg(env, (reg_index * sizeof(target_ulong)) + i);
         cfg_val |= (val << (i * 8));
     }
-
+    trace_pmpcfg_csr_read(env->mhartid, reg_index, cfg_val);
-    PMP_DEBUG("hart " TARGET_FMT_ld ": reg%d, val: 0x" TARGET_FMT_lx,
-        env->mhartid, reg_index, cfg_val);
 
     return cfg_val;
 }
@@ -346,9 +336,7 @@ target_ulong pmpcfg_csr_read(CPURISCVState *env, uint32_t reg_index)
 void pmpaddr_csr_write(CPURISCVState *env, uint32_t addr_index,
     target_ulong val)
 {
-    PMP_DEBUG("hart " TARGET_FMT_ld ": addr%d, val: 0x" TARGET_FMT_lx,
+    trace_pmpaddr_csr_write(env->mhartid, addr_index, val);
-        env->mhartid, addr_index, val);
-
     if (addr_index < MAX_RISCV_PMPS) {
         if (!pmp_is_locked(env, addr_index)) {
             env->pmp_state.pmp[addr_index].addr_reg = val;
@@ -369,14 +357,15 @@ void pmpaddr_csr_write(CPURISCVState *env, uint32_t addr_index,
  */
 target_ulong pmpaddr_csr_read(CPURISCVState *env, uint32_t addr_index)
 {
-    PMP_DEBUG("hart " TARGET_FMT_ld ": addr%d, val: 0x" TARGET_FMT_lx,
+    target_ulong val = 0;
-        env->mhartid, addr_index,
+
-        env->pmp_state.pmp[addr_index].addr_reg);
     if (addr_index < MAX_RISCV_PMPS) {
-        return env->pmp_state.pmp[addr_index].addr_reg;
+        val = env->pmp_state.pmp[addr_index].addr_reg;
+        trace_pmpaddr_csr_read(env->mhartid, addr_index, val);
     } else {
         qemu_log_mask(LOG_GUEST_ERROR,
                       "ignoring pmpaddr read - out of bounds\n");
-        return 0;
     }
+
+    return val;
 }

target/riscv/trace-events

@@ -1,2 +1,8 @@
 # target/riscv/cpu_helper.c
 riscv_trap(uint64_t hartid, bool async, uint64_t cause, uint64_t epc, uint64_t tval, const char *desc) "hart:%"PRId64", async:%d, cause:%"PRId64", epc:0x%"PRIx64", tval:0x%"PRIx64", desc=%s"
+
+# pmp.c
+pmpcfg_csr_read(uint64_t mhartid, uint32_t reg_index, uint64_t val) "hart %" PRIu64 ": read reg%" PRIu32", val: 0x%" PRIx64
+pmpcfg_csr_write(uint64_t mhartid, uint32_t reg_index, uint64_t val) "hart %" PRIu64 ": write reg%" PRIu32", val: 0x%" PRIx64
+pmpaddr_csr_read(uint64_t mhartid, uint32_t addr_index, uint64_t val) "hart %" PRIu64 ": read addr%" PRIu32", val: 0x%" PRIx64
+pmpaddr_csr_write(uint64_t mhartid, uint32_t addr_index, uint64_t val) "hart %" PRIu64 ": write addr%" PRIu32", val: 0x%" PRIx64