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lessen stack usage

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This commit is contained in:
iceman1001
2026-09-01 06:38:29 +02:00
parent 2b7a436ada
commit 03f9601cc2
1 changed files with 8 additions and 5 deletions
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armsrc/Standalone/hf_cardhopper.c
+8 -5
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@@ -67,10 +67,10 @@ static const uint8_t magicERR [4] = "\xff" "ERR";
static const uint8_t magicACK [1] = "\xfe";
// Forward declarations
static void become_reader(void);
static void __attribute__((noinline)) become_reader(void);
static void select_card(void);
static void become_card(void);
static void __attribute__((noinline)) become_card(void);
static void prepare_emulation(uint8_t *, uint16_t *, uint8_t *, packet_t *);
static void cook_ats(packet_t *, uint8_t, uint8_t);
static bool try_use_canned_response(const uint8_t *, int, tag_response_info_t *);
@@ -143,7 +143,7 @@ void RunMod(void) {
}
static void become_reader(void) {
static void __attribute__((noinline)) become_reader(void) {
iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
select_card(); // also sends UID, ATS
@@ -227,12 +227,15 @@ static void select_card(void) {
}
static void become_card(void) {
static void __attribute__((noinline)) become_card(void) {
iso14443a_setup(FPGA_HF_ISO14443A_TAGSIM_LISTEN);
uint8_t tagType;
uint16_t flags = 0;
uint8_t data[PM3_CMD_DATA_SIZE] = { 0 };
// only the UID is ever read out of this by SimulateIso14443aInit(), at most
// 10 bytes for a triple-cascade UID. It used to be PM3_CMD_DATA_SIZE, which
// put 624 bytes on the stack for nothing.
uint8_t data[10] = {0x00};
packet_t ats = { 0 };
prepare_emulation(&tagType, &flags, data, &ats);