Write the RISC-V assembly code to implement the following C code as an atomic “set max” operation using the lr.d/sc.d instructions. Here, the argument shvar contains the address of a shared variable which should be replaced by x if x is greater than the value it points to: void setmax(int* shvar, int x) { // Begin critical section if (x > *shvar) *shvar = x; // End critical section } }
Write the RISC-V assembly code to implement the following C code as an atomic “set max” operation using the lr.d/sc.d instructions. Here, the argument shvar contains the address of a shared variable which should be replaced by x if x is greater than the value it points to: void setmax(int* shvar, int x) { // Begin critical section if (x > *shvar) *shvar = x; // End critical section } }
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Write the RISC-V assembly code to implement the following C code as an atomic “set max” operation using the lr.d/sc.d instructions. Here, the argument shvar contains the address of a shared variable which should be replaced by x if x is greater than the value it points to:
void setmax(int* shvar, int x) {
// Begin critical section
if (x > *shvar)
*shvar = x;
// End critical section
}
}
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