mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 10:19:47 -04:00
Matthew Stanley
6f7fcdc89b
The "v4" suffix was a holdover from iterative project restarts. There is now one psxrecomp; all identifiers, include guards, cmake variables, function names, log strings, schema tags, and tool paths drop the v4 suffix. Changes: - PSXRECOMP_V4_ROOT → PSXRECOMP_ROOT (cmake) - PSXRECOMP_V4_RUNTIME_SOURCES/_INCLUDE_DIRS/_BIOS_GENERATED → no V4 - psxrecomp_v4_add_runtime_target → psxrecomp_add_runtime_target - PSXRECOMP_V4_*_H include guards → PSXRECOMP_*_H - "psxrecomp-v4" log/window strings → "psxrecomp" - Schema version strings in recompiler JSON output - Tool script hardcoded absolute paths updated Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
71 lines
2.6 KiB
C
71 lines
2.6 KiB
C
/*
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* card_data_writes.h — always-on capture of where the BIOS stores
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* incoming SIO data bytes during memory-card READ_DATA.
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*
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* The chain handler reads each byte from 0x1F801040 (SIO_RX_DATA) and
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* stores it into a destination buffer in RAM. We capture (cycle, addr,
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* value, mc_state, mc_data_idx, store_pc, func_addr) for every byte
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* that lands in RAM during a card data phase.
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*
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* Mechanism:
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* - sio_read(0x1F801040) sets a "pending" flag when mc_state is in
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* READ_DATA..READ_END and active_device==DEV_MEMCARD.
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* - The next byte/halfword/word RAM write whose new_val matches the
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* armed RX value is captured into the ring; the flag is cleared.
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* - Non-matching writes between read and store don't disarm us.
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*
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* Ring is non-evicting up to CARD_DATA_WRITES_CAP, then keeps a
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* rolling tail (so we never lose the LATEST writes). For first-32-
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* read audit, this gives ~32*128=4096 byte writes — enough to see
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* the full destination buffer for several consecutive reads.
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*/
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#ifndef PSXRECOMP_CARD_DATA_WRITES_H
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#define PSXRECOMP_CARD_DATA_WRITES_H
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define CARD_DATA_WRITES_CAP 4096
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typedef struct {
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uint64_t seq; /* monotonic across all entries */
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uint64_t psx_cycle_count;
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uint32_t addr; /* dest physical RAM address */
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uint32_t store_pc; /* g_debug_last_store_pc when stored */
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uint32_t func_addr; /* g_debug_current_func_addr */
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uint32_t value; /* value written (zero-extended) */
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uint16_t mc_state_at_read; /* mc_state at the SIO read */
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uint8_t mc_data_idx_at_read; /* mc_data_idx at the SIO read (0..127) */
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uint8_t width; /* 1, 2, or 4 */
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uint8_t slot; /* mc_slot at read */
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uint8_t pad0;
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uint8_t pad1;
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uint8_t pad2;
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} CardDataWriteEntry;
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/* Called from sio_read(0x1F801040) inside the MC_READ_DATA..READ_END
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* window. Records the byte we just delivered to BIOS so the next
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* matching RAM write can be tagged. */
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void card_data_writes_arm(uint8_t value, uint16_t mc_state,
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uint8_t mc_data_idx, uint8_t slot);
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/* Called from psx_write_byte/half/word. If armed and value matches
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* the armed RX byte, record + disarm. Returns 1 if captured, 0
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* otherwise. */
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int card_data_writes_check(uint32_t phys, uint32_t value, uint8_t width);
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uint32_t card_data_writes_get(const CardDataWriteEntry **buf_out,
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uint64_t *total_seq_out,
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uint32_t *head_out);
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void card_data_writes_reset(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* PSXRECOMP_CARD_DATA_WRITES_H */
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