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sframe: gas: libsframe: define constants and remove magic numbers

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Define constants in sframe.h for the various limits associated with the
range of offsets that can be encoded in the start address of an SFrame
FRE. E.g., sframe_frame_row_entry_addr1 is used when start address
offset can be encoded as 1-byte unsigned value.

Update the code in gas to use these defined constants as it checks for
these limits, and remove the usage of magic numbers.

ChangeLog:

	* gas/sframe-opt.c (sframe_estimate_size_before_relax):
	(sframe_convert_frag): Do not use magic numbers.
	* libsframe/sframe.c (sframe_calc_fre_type): Likewise.

include/ChangeLog:

	* sframe.h (SFRAME_FRE_TYPE_ADDR1_LIMIT): New constant.
	(SFRAME_FRE_TYPE_ADDR2_LIMIT): Likewise.
	(SFRAME_FRE_TYPE_ADDR4_LIMIT): Likewise.
This commit is contained in:
Indu Bhagat
2022-12-09 10:23:07 -08:00
parent 70cfae61f4
commit 3f107464e3
3 changed files with 24 additions and 9 deletions
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15
include/sframe.h
View File

@ -273,6 +273,7 @@ typedef struct sframe_fre_info
fi
*/
/* Used when SFRAME_FRE_TYPE_ADDR1 is specified as FRE type. */
typedef struct sframe_frame_row_entry_addr1
{
/* Start address of the frame row entry. Encoded as an 1-byte unsigned
@ -281,6 +282,11 @@ typedef struct sframe_frame_row_entry_addr1
sframe_fre_info sfre_info;
} ATTRIBUTE_PACKED sframe_frame_row_entry_addr1;
/* Upper limit of start address in sframe_frame_row_entry_addr1
is 0x100 (not inclusive). */
#define SFRAME_FRE_TYPE_ADDR1_LIMIT ((SFRAME_FRE_TYPE_ADDR1 + 1) * 8)
/* Used when SFRAME_FRE_TYPE_ADDR2 is specified as FRE type. */
typedef struct sframe_frame_row_entry_addr2
{
/* Start address of the frame row entry. Encoded as an 2-byte unsigned
@ -289,6 +295,11 @@ typedef struct sframe_frame_row_entry_addr2
sframe_fre_info sfre_info;
} ATTRIBUTE_PACKED sframe_frame_row_entry_addr2;
/* Upper limit of start address in sframe_frame_row_entry_addr2
is 0x10000 (not inclusive). */
#define SFRAME_FRE_TYPE_ADDR2_LIMIT ((SFRAME_FRE_TYPE_ADDR2 * 2) * 8)
/* Used when SFRAME_FRE_TYPE_ADDR4 is specified as FRE type. */
typedef struct sframe_frame_row_entry_addr4
{
/* Start address of the frame row entry. Encoded as a 4-byte unsigned
@ -297,6 +308,10 @@ typedef struct sframe_frame_row_entry_addr4
sframe_fre_info sfre_info;
} ATTRIBUTE_PACKED sframe_frame_row_entry_addr4;
/* Upper limit of start address in sframe_frame_row_entry_addr2
is 0x100000000 (not inclusive). */
#define SFRAME_FRE_TYPE_ADDR4_LIMIT ((SFRAME_FRE_TYPE_ADDR4 * 2) * 8)
#ifdef __cplusplus
}
#endif