riscv: replace macro DIM() with ARRAY_SIZE()

OpenOCD already defines the macro ARRAY_SIZE, while riscv code
uses a local macro DIM.

Prefer using the macro ARRAY_SIZE() instead of DIM().
Not all the riscv code has been upstreamed, yes; this patch only
covers the code already upstreamed.

Change-Id: I89a58a6d91916d85c53ba5e4091b558271f8d618
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/6258
Reviewed-by: Xiang W <wxjstz@126.com>
Tested-by: jenkins
Reviewed-by: Tim Newsome <tim@sifive.com>

3 files changed, 9 insertions, 15 deletions

diff --git a/src/target/riscv/riscv-011.c b/src/target/riscv/riscv-011.c
index 9b5f749..7a5e990 100644
--- a/src/target/riscv/riscv-011.c
+++ b/src/target/riscv/riscv-011.c
@@ -70,8 +70,6 @@
 #define get_field(reg, mask) (((reg) & (mask)) / ((mask) & ~((mask) << 1)))
 #define set_field(reg, mask, val) (((reg) & ~(mask)) | (((val) * ((mask) & ~((mask) << 1))) & (mask)))
 
-#define DIM(x)		(sizeof(x)/sizeof(*x))
-
 /* Constants for legacy SiFive hardware breakpoints. */
 #define CSR_BPCONTROL_X			(1<<0)
 #define CSR_BPCONTROL_W			(1<<1)
@@ -1634,7 +1632,7 @@ static riscv_error_t handle_halt_routine(struct target *target)
 
 	/* Read S0 from dscratch */
 	unsigned int csr[] = {CSR_DSCRATCH0, CSR_DPC, CSR_DCSR};
-	for (unsigned int i = 0; i < DIM(csr); i++) {
+	for (unsigned int i = 0; i < ARRAY_SIZE(csr); i++) {
 		scans_add_write32(scans, 0, csrr(S0, csr[i]), true);
 		scans_add_read(scans, SLOT0, false);
 	}
diff --git a/src/target/riscv/riscv-013.c b/src/target/riscv/riscv-013.c
index 32a7f02..b70c259 100644
--- a/src/target/riscv/riscv-013.c
+++ b/src/target/riscv/riscv-013.c
@@ -86,8 +86,6 @@ static int	riscv013_test_compliance(struct target *target);
 #define get_field(reg, mask) (((reg) & (mask)) / ((mask) & ~((mask) << 1)))
 #define set_field(reg, mask, val) (((reg) & ~(mask)) | (((val) * ((mask) & ~((mask) << 1))) & (mask)))
 
-#define DIM(x)		(sizeof(x)/sizeof(*x))
-
 #define CSR_DCSR_CAUSE_SWBP		1
 #define CSR_DCSR_CAUSE_TRIGGER	2
 #define CSR_DCSR_CAUSE_DEBUGINT	3
@@ -358,7 +356,7 @@ static void decode_dmi(char *text, unsigned address, unsigned data)
 	};
 
 	text[0] = 0;
-	for (unsigned i = 0; i < DIM(description); i++) {
+	for (unsigned i = 0; i < ARRAY_SIZE(description); i++) {
 		if (description[i].address == address) {
 			uint64_t mask = description[i].mask;
 			unsigned value = get_field(data, mask);
diff --git a/src/target/riscv/riscv.c b/src/target/riscv/riscv.c
index 7b7b728..fa07fe8 100644
--- a/src/target/riscv/riscv.c
+++ b/src/target/riscv/riscv.c
@@ -23,8 +23,6 @@
 #define get_field(reg, mask) (((reg) & (mask)) / ((mask) & ~((mask) << 1)))
 #define set_field(reg, mask, val) (((reg) & ~(mask)) | (((val) * ((mask) & ~((mask) << 1))) & (mask)))
 
-#define DIM(x)		(sizeof(x)/sizeof(*x))
-
 /* Constants for legacy SiFive hardware breakpoints. */
 #define CSR_BPCONTROL_X			(1<<0)
 #define CSR_BPCONTROL_W			(1<<1)
@@ -184,10 +182,10 @@ struct scan_field _bscan_tunnel_nested_tap_select_dmi[] = {
 		}
 };
 struct scan_field *bscan_tunnel_nested_tap_select_dmi = _bscan_tunnel_nested_tap_select_dmi;
-uint32_t bscan_tunnel_nested_tap_select_dmi_num_fields = DIM(_bscan_tunnel_nested_tap_select_dmi);
+uint32_t bscan_tunnel_nested_tap_select_dmi_num_fields = ARRAY_SIZE(_bscan_tunnel_nested_tap_select_dmi);
 
 struct scan_field *bscan_tunnel_data_register_select_dmi = _bscan_tunnel_data_register_select_dmi;
-uint32_t bscan_tunnel_data_register_select_dmi_num_fields = DIM(_bscan_tunnel_data_register_select_dmi);
+uint32_t bscan_tunnel_data_register_select_dmi_num_fields = ARRAY_SIZE(_bscan_tunnel_data_register_select_dmi);
 
 struct trigger {
 	uint64_t address;
@@ -348,8 +346,8 @@ uint32_t dtmcontrol_scan_via_bscan(struct target *target, uint32_t out)
 		tunneled_dr[0].in_value = NULL;
 	}
 	jtag_add_ir_scan(target->tap, &select_user4, TAP_IDLE);
-	jtag_add_dr_scan(target->tap, DIM(tunneled_ir), tunneled_ir, TAP_IDLE);
-	jtag_add_dr_scan(target->tap, DIM(tunneled_dr), tunneled_dr, TAP_IDLE);
+	jtag_add_dr_scan(target->tap, ARRAY_SIZE(tunneled_ir), tunneled_ir, TAP_IDLE);
+	jtag_add_dr_scan(target->tap, ARRAY_SIZE(tunneled_dr), tunneled_dr, TAP_IDLE);
 	select_dmi_via_bscan(target);
 
 	int retval = jtag_execute_queue();
@@ -1788,7 +1786,7 @@ static int riscv_run_algorithm(struct target *target, int num_mem_params,
 				GDB_REGNO_PC,
 				GDB_REGNO_MSTATUS, GDB_REGNO_MEPC, GDB_REGNO_MCAUSE,
 			};
-			for (unsigned i = 0; i < DIM(regnums); i++) {
+			for (unsigned i = 0; i < ARRAY_SIZE(regnums); i++) {
 				enum gdb_regno regno = regnums[i];
 				riscv_reg_t reg_value;
 				if (riscv_get_register(target, &reg_value, regno) != ERROR_OK)
@@ -3768,7 +3766,7 @@ int riscv_init_registers(struct target *target)
 #undef DECLARE_CSR
 	};
 	/* encoding.h does not contain the registers in sorted order. */
-	qsort(csr_info, DIM(csr_info), sizeof(*csr_info), cmp_csr_info);
+	qsort(csr_info, ARRAY_SIZE(csr_info), sizeof(*csr_info), cmp_csr_info);
 	unsigned csr_info_index = 0;
 
 	unsigned custom_range_index = 0;
@@ -4028,7 +4026,7 @@ int riscv_init_registers(struct target *target)
 			unsigned csr_number = number - GDB_REGNO_CSR0;
 
 			while (csr_info[csr_info_index].number < csr_number &&
-					csr_info_index < DIM(csr_info) - 1) {
+					csr_info_index < ARRAY_SIZE(csr_info) - 1) {
 				csr_info_index++;
 			}
 			if (csr_info[csr_info_index].number == csr_number) {