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fd67aa1129
Adds two new external authors to etc/update-copyright.py to cover bfd/ax_tls.m4, and adds gprofng to dirs handled automatically, then updates copyright messages as follows: 1) Update cgen/utils.scm emitted copyrights. 2) Run "etc/update-copyright.py --this-year" with an extra external author I haven't committed, 'Kalray SA.', to cover gas testsuite files (which should have their copyright message removed). 3) Build with --enable-maintainer-mode --enable-cgen-maint=yes. 4) Check out */po/*.pot which we don't update frequently.
283 lines
9.3 KiB
C
283 lines
9.3 KiB
C
/* Public API to SFrame.
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Copyright (C) 2022-2024 Free Software Foundation, Inc.
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This file is part of libsframe.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef _SFRAME_API_H
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#define _SFRAME_API_H
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#include <sframe.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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typedef struct sframe_decoder_ctx sframe_decoder_ctx;
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typedef struct sframe_encoder_ctx sframe_encoder_ctx;
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#define MAX_NUM_STACK_OFFSETS 3
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#define MAX_OFFSET_BYTES \
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((SFRAME_FRE_OFFSET_4B * 2 * MAX_NUM_STACK_OFFSETS))
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/* User interfacing SFrame Row Entry.
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An abstraction provided by libsframe so the consumer is decoupled from
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the binary format representation of the same.
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The members are best ordered such that they are aligned at their natural
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boundaries. This helps avoid usage of undesirable misaligned memory
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accesses. See PR libsframe/29856. */
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typedef struct sframe_frame_row_entry
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{
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uint32_t fre_start_addr;
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unsigned char fre_offsets[MAX_OFFSET_BYTES];
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unsigned char fre_info;
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} sframe_frame_row_entry;
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#define SFRAME_ERR ((int) -1)
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/* This macro holds information about all the available SFrame
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errors. It is used to form both an enum holding all the error
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constants, and also the error strings themselves. To use, define
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_SFRAME_FIRST and _SFRAME_ITEM to expand as you like, then
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mention the macro name. See the enum after this for an example. */
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#define _SFRAME_ERRORS \
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_SFRAME_FIRST (SFRAME_ERR_VERSION_INVAL, "SFrame version not supported.") \
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_SFRAME_ITEM (SFRAME_ERR_NOMEM, "Out of Memory.") \
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_SFRAME_ITEM (SFRAME_ERR_INVAL, "Corrupt SFrame.") \
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_SFRAME_ITEM (SFRAME_ERR_BUF_INVAL, "Buffer does not contain SFrame data.") \
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_SFRAME_ITEM (SFRAME_ERR_DCTX_INVAL, "Corrupt SFrame decoder.") \
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_SFRAME_ITEM (SFRAME_ERR_ECTX_INVAL, "Corrupt SFrame encoder.") \
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_SFRAME_ITEM (SFRAME_ERR_FDE_INVAL, "Corrput FDE.") \
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_SFRAME_ITEM (SFRAME_ERR_FRE_INVAL, "Corrupt FRE.") \
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_SFRAME_ITEM (SFRAME_ERR_FDE_NOTFOUND,"FDE not found.") \
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_SFRAME_ITEM (SFRAME_ERR_FDE_NOTSORTED, "FDEs not sorted.") \
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_SFRAME_ITEM (SFRAME_ERR_FRE_NOTFOUND,"FRE not found.") \
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_SFRAME_ITEM (SFRAME_ERR_FREOFFSET_NOPRESENT,"FRE offset not present.")
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#define SFRAME_ERR_BASE 2000 /* Base value for libsframe errnos. */
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enum
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{
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#define _SFRAME_FIRST(NAME, STR) NAME = SFRAME_ERR_BASE
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#define _SFRAME_ITEM(NAME, STR) , NAME
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_SFRAME_ERRORS
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#undef _SFRAME_ITEM
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#undef _SFRAME_FIRST
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};
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/* Count of SFrame errors. */
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#define SFRAME_ERR_NERR (SFRAME_ERR_FREOFFSET_NOPRESENT - SFRAME_ERR_BASE + 1)
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/* Get the error message string. */
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extern const char *
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sframe_errmsg (int error);
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/* Create an FDE function info bye given an FRE_TYPE and an FDE_TYPE. */
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extern unsigned char
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sframe_fde_create_func_info (uint32_t fre_type, uint32_t fde_type);
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/* Gather the FRE type given the function size. */
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extern uint32_t
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sframe_calc_fre_type (size_t func_size);
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/* The SFrame Decoder. */
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/* Decode the specified SFrame buffer CF_BUF of size CF_SIZE and return the
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new SFrame decoder context. Sets ERRP for the caller if any error. */
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extern sframe_decoder_ctx *
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sframe_decode (const char *cf_buf, size_t cf_size, int *errp);
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/* Free the decoder context. */
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extern void
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sframe_decoder_free (sframe_decoder_ctx **dctx);
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/* Get the size of the SFrame header from the decoder context DCTX. */
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extern unsigned int
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sframe_decoder_get_hdr_size (sframe_decoder_ctx *dctx);
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/* Get the SFrame's abi/arch info. */
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extern uint8_t
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sframe_decoder_get_abi_arch (sframe_decoder_ctx *dctx);
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/* Get the format version from the SFrame decoder context DCTX. */
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extern uint8_t
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sframe_decoder_get_version (sframe_decoder_ctx *dctx);
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/* Return the number of function descriptor entries in the SFrame decoder
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DCTX. */
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extern uint32_t
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sframe_decoder_get_num_fidx (sframe_decoder_ctx *dctx);
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/* Get the fixed FP offset from the decoder context DCTX. */
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extern int8_t
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sframe_decoder_get_fixed_fp_offset (sframe_decoder_ctx *dctx);
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/* Get the fixed RA offset from the decoder context DCTX. */
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extern int8_t
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sframe_decoder_get_fixed_ra_offset (sframe_decoder_ctx *dctx);
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/* Find the function descriptor entry which contains the specified address.
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Note: This function is deprecated and will be removed from future release
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X+2 of the library. */
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extern void *
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sframe_get_funcdesc_with_addr (sframe_decoder_ctx *dctx, int32_t addr,
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int *errp);
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/* Find the SFrame Frame Row Entry which contains the PC. Returns
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SFRAME_ERR if failure. */
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extern int
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sframe_find_fre (sframe_decoder_ctx *ctx, int32_t pc,
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sframe_frame_row_entry *frep);
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/* Get the FRE_IDX'th FRE of the function at FUNC_IDX'th function
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index entry in the SFrame decoder CTX. Returns error code as
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applicable. */
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extern int
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sframe_decoder_get_fre (sframe_decoder_ctx *ctx,
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unsigned int func_idx,
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unsigned int fre_idx,
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sframe_frame_row_entry *fre);
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/* Get the data (NUM_FRES, FUNC_START_ADDRESS) from the function
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descriptor entry at index I'th in the decoder CTX. If failed,
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return error code. */
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extern int
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sframe_decoder_get_funcdesc (sframe_decoder_ctx *ctx,
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unsigned int i,
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uint32_t *num_fres,
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uint32_t *func_size,
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int32_t *func_start_address,
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unsigned char *func_info);
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/* Get the data (NUM_FRES, FUNC_SIZE, FUNC_START_ADDRESS, FUNC_INFO,
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REP_BLOCK_SIZE) from the function descriptor entry at index I'th
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in the decoder CTX. If failed, return error code.
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This API is only available from SFRAME_VERSION_2. */
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extern int
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sframe_decoder_get_funcdesc_v2 (sframe_decoder_ctx *ctx,
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unsigned int i,
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uint32_t *num_fres,
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uint32_t *func_size,
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int32_t *func_start_address,
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unsigned char *func_info,
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uint8_t *rep_block_size);
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/* SFrame textual dump. */
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extern void
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dump_sframe (sframe_decoder_ctx *decoder, uint64_t addr);
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/* Get the base reg id from the FRE info. Sets errp if fails. */
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extern uint8_t
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sframe_fre_get_base_reg_id (sframe_frame_row_entry *fre, int *errp);
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/* Get the CFA offset from the FRE. If the offset is invalid, sets errp. */
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extern int32_t
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sframe_fre_get_cfa_offset (sframe_decoder_ctx *dtcx,
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sframe_frame_row_entry *fre, int *errp);
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/* Get the FP offset from the FRE. If the offset is invalid, sets errp. */
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extern int32_t
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sframe_fre_get_fp_offset (sframe_decoder_ctx *dctx,
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sframe_frame_row_entry *fre, int *errp);
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/* Get the RA offset from the FRE. If the offset is invalid, sets errp. */
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extern int32_t
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sframe_fre_get_ra_offset (sframe_decoder_ctx *dctx,
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sframe_frame_row_entry *fre, int *errp);
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/* Get whether the RA is mangled. */
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extern bool
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sframe_fre_get_ra_mangled_p (sframe_decoder_ctx *dctx,
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sframe_frame_row_entry *fre, int *errp);
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/* The SFrame Encoder. */
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/* Create an encoder context with the given SFrame format version VER, FLAGS
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and ABI information. Sets errp if failure. */
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extern sframe_encoder_ctx *
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sframe_encode (uint8_t ver, uint8_t flags, uint8_t abi_arch,
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int8_t fixed_fp_offset, int8_t fixed_ra_offset, int *errp);
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/* Free the encoder context. */
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extern void
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sframe_encoder_free (sframe_encoder_ctx **encoder);
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/* Get the size of the SFrame header from the encoder ctx ENCODER. */
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extern unsigned int
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sframe_encoder_get_hdr_size (sframe_encoder_ctx *encoder);
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/* Get the abi/arch info from the SFrame encoder context CTX. */
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extern uint8_t
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sframe_encoder_get_abi_arch (sframe_encoder_ctx *encoder);
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/* Get the format version from the SFrame encoder context ENCODER. */
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extern uint8_t
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sframe_encoder_get_version (sframe_encoder_ctx *encoder);
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/* Return the number of function descriptor entries in the SFrame encoder
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ENCODER. */
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extern uint32_t
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sframe_encoder_get_num_fidx (sframe_encoder_ctx *encoder);
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/* Add an FRE to function at FUNC_IDX'th function descriptor index entry in
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the encoder context. */
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extern int
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sframe_encoder_add_fre (sframe_encoder_ctx *encoder,
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unsigned int func_idx,
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sframe_frame_row_entry *frep);
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/* Add a new function descriptor entry with START_ADDR, FUNC_SIZE and NUM_FRES
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to the encoder. */
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extern int
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sframe_encoder_add_funcdesc (sframe_encoder_ctx *encoder,
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int32_t start_addr,
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uint32_t func_size,
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unsigned char func_info,
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uint32_t num_fres);
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/* Add a new function descriptor entry with START_ADDR, FUNC_SIZE, FUNC_INFO
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and REP_BLOCK_SIZE to the encoder. */
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extern int
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sframe_encoder_add_funcdesc_v2 (sframe_encoder_ctx *encoder,
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int32_t start_addr,
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uint32_t func_size,
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unsigned char func_info,
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uint8_t rep_block_size,
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uint32_t num_fres);
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/* Serialize the contents of the encoder and return the buffer. ENCODED_SIZE
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is updated to the size of the buffer. Sets ERRP if failure. */
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extern char *
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sframe_encoder_write (sframe_encoder_ctx *encoder,
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size_t *encoded_size, int *errp);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SFRAME_API_H */
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