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dmi_scan() allocate bytes depending on abits value (#307) 

* dmi_scan() allocate bytes depending on abits value

Fixes #303.

Change-Id: Iac45959cf342180c60cd0b5462f864ad81beddd2

* Incorporate review feedback.

Change-Id: I1cc7d20fed6f2d891bec0e858fca53ece450720c
This commit is contained in:
Tim Newsome 2018-10-18 13:26:03 -07:00 committed by GitHub
parent b986d29bc9
commit 60c37e1679
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1 changed files with 7 additions and 3 deletions
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10
src/target/riscv/riscv-013.c
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@ -458,14 +458,18 @@ static dmi_status_t dmi_scan(struct target *target, uint32_t *address_in,
bool exec) bool exec)
{ {
riscv013_info_t *info = get_info(target); riscv013_info_t *info = get_info(target);
uint8_t in[8] = {0}; unsigned num_bits = info->abits + DTM_DMI_OP_LENGTH + DTM_DMI_DATA_LENGTH;
uint8_t out[8]; size_t num_bytes = (num_bits + 7) / 8;
uint8_t in[num_bytes];
uint8_t out[num_bytes];
struct scan_field field = { struct scan_field field = {
.num_bits = info->abits + DTM_DMI_OP_LENGTH + DTM_DMI_DATA_LENGTH, .num_bits = num_bits,
.out_value = out, .out_value = out,
.in_value = in .in_value = in
}; };
memset(in, 0, num_bytes);
assert(info->abits != 0); assert(info->abits != 0);
buf_set_u32(out, DTM_DMI_OP_OFFSET, DTM_DMI_OP_LENGTH, op); buf_set_u32(out, DTM_DMI_OP_OFFSET, DTM_DMI_OP_LENGTH, op);