diff options
Diffstat (limited to 'include/sframe-api.h')
| -rw-r--r-- | include/sframe-api.h | 44 |
1 files changed, 42 insertions, 2 deletions
diff --git a/include/sframe-api.h b/include/sframe-api.h index 77ba32b..ac4f19a 100644 --- a/include/sframe-api.h +++ b/include/sframe-api.h @@ -124,6 +124,22 @@ sframe_decoder_get_abi_arch (sframe_decoder_ctx *dctx); extern uint8_t sframe_decoder_get_version (sframe_decoder_ctx *dctx); +/* Get the section flags from the SFrame decoder context DCTX. */ +extern uint8_t +sframe_decoder_get_flags (sframe_decoder_ctx *dctx); + +/* Get the offset of the sfde_func_start_address field (from the start of the + on-disk layout of the SFrame section) of the FDE at FUNC_IDX in the decoder + context DCTX. + + If FUNC_IDX is more than the number of SFrame FDEs in the section, sets + error code in ERRP, but returns the (hypothetical) offset. This is useful + for the linker when arranging input FDEs into the output section to be + emitted. */ +uint32_t +sframe_decoder_get_offsetof_fde_start_addr (sframe_decoder_ctx *dctx, + uint32_t func_idx, int *errp); + /* Return the number of function descriptor entries in the SFrame decoder DCTX. */ extern uint32_t @@ -198,12 +214,20 @@ extern int32_t sframe_fre_get_cfa_offset (sframe_decoder_ctx *dtcx, sframe_frame_row_entry *fre, int *errp); -/* Get the FP offset from the FRE. If the offset is invalid, sets errp. */ +/* Get the FP offset from the FRE. If the offset is invalid, sets errp. + + For s390x the offset may be an encoded register number, indicated by + LSB set to one, which is only valid in the topmost frame. */ extern int32_t sframe_fre_get_fp_offset (sframe_decoder_ctx *dctx, sframe_frame_row_entry *fre, int *errp); -/* Get the RA offset from the FRE. If the offset is invalid, sets errp. */ +/* Get the RA offset from the FRE. If the offset is invalid, sets errp. + + For s390x an RA offset value of SFRAME_FRE_RA_OFFSET_INVALID indicates + that the RA is not saved, which is only valid in the topmost frame. + For s390x the offset may be an encoded register number, indicated by + LSB set to one, which is only valid in the topmost frame. */ extern int32_t sframe_fre_get_ra_offset (sframe_decoder_ctx *dctx, sframe_frame_row_entry *fre, int *errp); @@ -238,6 +262,22 @@ sframe_encoder_get_abi_arch (sframe_encoder_ctx *encoder); extern uint8_t sframe_encoder_get_version (sframe_encoder_ctx *encoder); +/* Get the section flags from the SFrame encoder context ENCODER. */ +extern uint8_t +sframe_encoder_get_flags (sframe_encoder_ctx *encoder); + +/* Get the offset of the sfde_func_start_address field (from the start of the + on-disk layout of the SFrame section) of the FDE at FUNC_IDX in the encoder + context ENCODER. + + If FUNC_IDX is more than the number of SFrame FDEs in the section, sets + error code in ERRP, but returns the (hypothetical) offset. This is useful + for the linker when arranging input FDEs into the output section to be + emitted. */ +uint32_t +sframe_encoder_get_offsetof_fde_start_addr (sframe_encoder_ctx *encoder, + uint32_t func_idx, int *errp); + /* Return the number of function descriptor entries in the SFrame encoder ENCODER. */ extern uint32_t |