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acpigen: Add ShiftLeft function helper 

Provide a helper function for the ACPI shift left operator that
uses the same operator for the source and result.

ShiftLeft (OP, count, OP)

Signed-off-by: Duncan Laurie <dlaurie@google.com>
Change-Id: I66ee89bd1c4be583d0e892b02535bfa9514d488a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46256
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Duncan Laurie 2020-10-06 21:01:51 +00:00 committed by Duncan Laurie
parent 8e391d3452
commit 36858208e6
2 changed files with 9 additions and 0 deletions
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8
src/acpi/acpigen.c
View File

@ -1381,6 +1381,14 @@ void acpigen_write_else(void)
acpigen_write_len_f();
}
void acpigen_write_shiftleft_op_int(uint8_t src_result, uint64_t count)
{
acpigen_emit_byte(SHIFT_LEFT_OP);
acpigen_emit_byte(src_result);
acpigen_write_integer(count);
acpigen_emit_byte(ZERO_OP);
}
void acpigen_write_to_buffer(uint8_t src, uint8_t dst)
{
acpigen_emit_byte(TO_BUFFER_OP);

1
src/include/acpi/acpigen.h
View File

@ -378,6 +378,7 @@ void acpigen_write_if_lequal_op_op(uint8_t op, uint8_t val);
void acpigen_write_if_lequal_op_int(uint8_t op, uint64_t val);
void acpigen_write_if_lequal_namestr_int(const char *namestr, uint64_t val);
void acpigen_write_else(void);
void acpigen_write_shiftleft_op_int(uint8_t src_result, uint64_t count);
void acpigen_write_to_buffer(uint8_t src, uint8_t dst);
void acpigen_write_to_integer(uint8_t src, uint8_t dst);
void acpigen_write_to_integer_from_namestring(const char *source, uint8_t dst_op);